Spring boot将配置属性注入到bean 专题
https://blog.csdn.net/wangmx1993328/article/details/81002901
Error starting ApplicationContext. To display the auto-configuration report re-run your application with 'debug' enabled.
2019-01-29 00:14:04.856 ERROR 10988 --- [ main] o.s.boot.SpringApplication : Application startup failed org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'authorSettings': Could not bind properties to AuthorSettings (prefix=info.author, ignoreInvalidFields=false, ignoreUnknownFields=true, ignoreNestedProperties=false); nested exception is javax.validation.ValidationException: HV000029: Constraint factory returned null when trying to create instance of org.hibernate.validator.internal.constraintvalidators.bv.MaxValidatorForNumber.
at org.springframework.boot.context.properties.ConfigurationPropertiesBindingPostProcessor.postProcessBeforeInitialization(ConfigurationPropertiesBindingPostProcessor.java:336) ~[spring-boot-1.5.18.RELEASE.jar:1.5.18.RELEASE]
at org.springframework.boot.context.properties.ConfigurationPropertiesBindingPostProcessor.postProcessBeforeInitialization(ConfigurationPropertiesBindingPostProcessor.java:292) ~[spring-boot-1.5.18.RELEASE.jar:1.5.18.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsBeforeInitialization(AbstractAutowireCapableBeanFactory.java:407) ~[spring-beans-4.3.21.RELEASE.jar:4.3.21.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1623) ~[spring-beans-4.3.21.RELEASE.jar:4.3.21.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:553) ~[spring-beans-4.3.21.RELEASE.jar:4.3.21.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:481) ~[spring-beans-4.3.21.RELEASE.jar:4.3.21.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:312) ~[spring-beans-4.3.21.RELEASE.jar:4.3.21.RELEASE]
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) ~[spring-beans-4.3.21.RELEASE.jar:4.3.21.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:308) ~[spring-beans-4.3.21.RELEASE.jar:4.3.21.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197) ~[spring-beans-4.3.21.RELEASE.jar:4.3.21.RELEASE]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:761) ~[spring-beans-4.3.21.RELEASE.jar:4.3.21.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:867) ~[spring-context-4.3.21.RELEASE.jar:4.3.21.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:543) ~[spring-context-4.3.21.RELEASE.jar:4.3.21.RELEASE]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:693) ~[spring-boot-1.5.18.RELEASE.jar:1.5.18.RELEASE]
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:360) ~[spring-boot-1.5.18.RELEASE.jar:1.5.18.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:303) ~[spring-boot-1.5.18.RELEASE.jar:1.5.18.RELEASE]
at org.springframework.boot.test.context.SpringBootContextLoader.loadContext(SpringBootContextLoader.java:121) [spring-boot-test-1.5.18.RELEASE.jar:1.5.18.RELEASE]
at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContextInternal(DefaultCacheAwareContextLoaderDelegate.java:98) [spring-test-4.3.21.RELEASE.jar:4.3.21.RELEASE]
at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContext(DefaultCacheAwareContextLoaderDelegate.java:116) [spring-test-4.3.21.RELEASE.jar:4.3.21.RELEASE]
at org.springframework.test.context.support.DefaultTestContext.getApplicationContext(DefaultTestContext.java:83) [spring-test-4.3.21.RELEASE.jar:4.3.21.RELEASE]
at org.springframework.test.context.web.ServletTestExecutionListener.setUpRequestContextIfNecessary(ServletTestExecutionListener.java:189) [spring-test-4.3.21.RELEASE.jar:4.3.21.RELEASE]
at org.springframework.test.context.web.ServletTestExecutionListener.prepareTestInstance(ServletTestExecutionListener.java:131) [spring-test-4.3.21.RELEASE.jar:4.3.21.RELEASE]
at org.springframework.test.context.TestContextManager.prepareTestInstance(TestContextManager.java:230) [spring-test-4.3.21.RELEASE.jar:4.3.21.RELEASE]
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.createTest(SpringJUnit4ClassRunner.java:228) [spring-test-4.3.21.RELEASE.jar:4.3.21.RELEASE]
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner$1.runReflectiveCall(SpringJUnit4ClassRunner.java:287) [spring-test-4.3.21.RELEASE.jar:4.3.21.RELEASE]
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12) [junit-4.12.jar:4.12]
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.methodBlock(SpringJUnit4ClassRunner.java:289) [spring-test-4.3.21.RELEASE.jar:4.3.21.RELEASE]
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:247) [spring-test-4.3.21.RELEASE.jar:4.3.21.RELEASE]
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:94) [spring-test-4.3.21.RELEASE.jar:4.3.21.RELEASE]
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290) [junit-4.12.jar:4.12]
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71) [junit-4.12.jar:4.12]
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288) [junit-4.12.jar:4.12]
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58) [junit-4.12.jar:4.12]
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268) [junit-4.12.jar:4.12]
at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61) [spring-test-4.3.21.RELEASE.jar:4.3.21.RELEASE]
at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70) [spring-test-4.3.21.RELEASE.jar:4.3.21.RELEASE]
at org.junit.runners.ParentRunner.run(ParentRunner.java:363) [junit-4.12.jar:4.12]
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:191) [spring-test-4.3.21.RELEASE.jar:4.3.21.RELEASE]
at org.junit.runner.JUnitCore.run(JUnitCore.java:137) [junit-4.12.jar:4.12]
at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68) [junit-rt.jar:na]
at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47) [junit-rt.jar:na]
at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242) [junit-rt.jar:na]
at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70) [junit-rt.jar:na]
Caused by: javax.validation.ValidationException: HV000029: Constraint factory returned null when trying to create instance of org.hibernate.validator.internal.constraintvalidators.bv.MaxValidatorForNumber.
at org.hibernate.validator.internal.engine.constraintvalidation.ConstraintValidatorManager.createAndInitializeValidator(ConstraintValidatorManager.java:181) ~[hibernate-validator-5.3.6.Final.jar:5.3.6.Final]
at org.hibernate.validator.internal.engine.constraintvalidation.ConstraintValidatorManager.getInitializedValidator(ConstraintValidatorManager.java:122) ~[hibernate-validator-5.3.6.Final.jar:5.3.6.Final]
at org.hibernate.validator.internal.engine.constraintvalidation.ConstraintTree.getConstraintValidatorNoUnwrapping(ConstraintTree.java:303) ~[hibernate-validator-5.3.6.Final.jar:5.3.6.Final]
at org.hibernate.validator.internal.engine.constraintvalidation.ConstraintTree.getConstraintValidatorInstanceForAutomaticUnwrapping(ConstraintTree.java:244) ~[hibernate-validator-5.3.6.Final.jar:5.3.6.Final]
at org.hibernate.validator.internal.engine.constraintvalidation.ConstraintTree.getInitializedConstraintValidator(ConstraintTree.java:163) ~[hibernate-validator-5.3.6.Final.jar:5.3.6.Final]
at org.hibernate.validator.internal.engine.constraintvalidation.ConstraintTree.validateConstraints(ConstraintTree.java:116) ~[hibernate-validator-5.3.6.Final.jar:5.3.6.Final]
at org.hibernate.validator.internal.engine.constraintvalidation.ConstraintTree.validateConstraints(ConstraintTree.java:87) ~[hibernate-validator-5.3.6.Final.jar:5.3.6.Final]
at org.hibernate.validator.internal.metadata.core.MetaConstraint.validateConstraint(MetaConstraint.java:73) ~[hibernate-validator-5.3.6.Final.jar:5.3.6.Final]
at org.hibernate.validator.internal.engine.ValidatorImpl.validateMetaConstraint(ValidatorImpl.java:621) ~[hibernate-validator-5.3.6.Final.jar:5.3.6.Final]
at org.hibernate.validator.internal.engine.ValidatorImpl.validateConstraint(ValidatorImpl.java:584) ~[hibernate-validator-5.3.6.Final.jar:5.3.6.Final]
at org.hibernate.validator.internal.engine.ValidatorImpl.validateConstraintsForSingleDefaultGroupElement(ValidatorImpl.java:528) ~[hibernate-validator-5.3.6.Final.jar:5.3.6.Final]
at org.hibernate.validator.internal.engine.ValidatorImpl.validateConstraintsForDefaultGroup(ValidatorImpl.java:496) ~[hibernate-validator-5.3.6.Final.jar:5.3.6.Final]
at org.hibernate.validator.internal.engine.ValidatorImpl.validateConstraintsForCurrentGroup(ValidatorImpl.java:461) ~[hibernate-validator-5.3.6.Final.jar:5.3.6.Final]
at org.hibernate.validator.internal.engine.ValidatorImpl.validateInContext(ValidatorImpl.java:411) ~[hibernate-validator-5.3.6.Final.jar:5.3.6.Final]
at org.hibernate.validator.internal.engine.ValidatorImpl.validate(ValidatorImpl.java:208) ~[hibernate-validator-5.3.6.Final.jar:5.3.6.Final]
at org.springframework.validation.beanvalidation.SpringValidatorAdapter.validate(SpringValidatorAdapter.java:103) ~[spring-context-4.3.21.RELEASE.jar:4.3.21.RELEASE]
at org.springframework.validation.DataBinder.validate(DataBinder.java:878) ~[spring-context-4.3.21.RELEASE.jar:4.3.21.RELEASE]
at org.springframework.boot.bind.PropertiesConfigurationFactory.doBindPropertiesToTarget(PropertiesConfigurationFactory.java:289) ~[spring-boot-1.5.18.RELEASE.jar:1.5.18.RELEASE]
at org.springframework.boot.bind.PropertiesConfigurationFactory.bindPropertiesToTarget(PropertiesConfigurationFactory.java:250) ~[spring-boot-1.5.18.RELEASE.jar:1.5.18.RELEASE]
at org.springframework.boot.context.properties.ConfigurationPropertiesBindingPostProcessor.postProcessBeforeInitialization(ConfigurationPropertiesBindingPostProcessor.java:331) ~[spring-boot-1.5.18.RELEASE.jar:1.5.18.RELEASE]
... 42 common frames omitted 2019-01-29 00:14:04.865 ERROR 10988 --- [ main] o.s.test.context.TestContextManager : Caught exception while allowing TestExecutionListener [org.springframework.test.context.web.ServletTestExecutionListener@37374a5e] to prepare test instance [com.tangcheng.learning.custom.AuthorSettingsTest@14b0b7f9] java.lang.IllegalStateException: Failed to load ApplicationContext
at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContext(DefaultCacheAwareContextLoaderDelegate.java:124) ~[spring-test-4.3.21.RELEASE.jar:4.3.21.RELEASE]
at org.springframework.test.context.support.DefaultTestContext.getApplicationContext(DefaultTestContext.java:83) ~[spring-test-4.3.21.RELEASE.jar:4.3.21.RELEASE]
at org.springframework.test.context.web.ServletTestExecutionListener.setUpRequestContextIfNecessary(ServletTestExecutionListener.java:189) ~[spring-test-4.3.21.RELEASE.jar:4.3.21.RELEASE]
at org.springframework.test.context.web.ServletTestExecutionListener.prepareTestInstance(ServletTestExecutionListener.java:131) ~[spring-test-4.3.21.RELEASE.jar:4.3.21.RELEASE]
at org.springframework.test.context.TestContextManager.prepareTestInstance(TestContextManager.java:230) ~[spring-test-4.3.21.RELEASE.jar:4.3.21.RELEASE]
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.createTest(SpringJUnit4ClassRunner.java:228) [spring-test-4.3.21.RELEASE.jar:4.3.21.RELEASE]
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner$1.runReflectiveCall(SpringJUnit4ClassRunner.java:287) [spring-test-4.3.21.RELEASE.jar:4.3.21.RELEASE]
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12) [junit-4.12.jar:4.12]
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.methodBlock(SpringJUnit4ClassRunner.java:289) [spring-test-4.3.21.RELEASE.jar:4.3.21.RELEASE]
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:247) [spring-test-4.3.21.RELEASE.jar:4.3.21.RELEASE]
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:94) [spring-test-4.3.21.RELEASE.jar:4.3.21.RELEASE]
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290) [junit-4.12.jar:4.12]
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71) [junit-4.12.jar:4.12]
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288) [junit-4.12.jar:4.12]
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58) [junit-4.12.jar:4.12]
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268) [junit-4.12.jar:4.12]
at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61) [spring-test-4.3.21.RELEASE.jar:4.3.21.RELEASE]
at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70) [spring-test-4.3.21.RELEASE.jar:4.3.21.RELEASE]
at org.junit.runners.ParentRunner.run(ParentRunner.java:363) [junit-4.12.jar:4.12]
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:191) [spring-test-4.3.21.RELEASE.jar:4.3.21.RELEASE]
at org.junit.runner.JUnitCore.run(JUnitCore.java:137) [junit-4.12.jar:4.12]
at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68) [junit-rt.jar:na]
at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47) [junit-rt.jar:na]
at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242) [junit-rt.jar:na]
at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70) [junit-rt.jar:na]
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'authorSettings': Could not bind properties to AuthorSettings (prefix=info.author, ignoreInvalidFields=false, ignoreUnknownFields=true, ignoreNestedProperties=false); nested exception is javax.validation.ValidationException: HV000029: Constraint factory returned null when trying to create instance of org.hibernate.validator.internal.constraintvalidators.bv.MaxValidatorForNumber.
at org.springframework.boot.context.properties.ConfigurationPropertiesBindingPostProcessor.postProcessBeforeInitialization(ConfigurationPropertiesBindingPostProcessor.java:336) ~[spring-boot-1.5.18.RELEASE.jar:1.5.18.RELEASE]
at org.springframework.boot.context.properties.ConfigurationPropertiesBindingPostProcessor.postProcessBeforeInitialization(ConfigurationPropertiesBindingPostProcessor.java:292) ~[spring-boot-1.5.18.RELEASE.jar:1.5.18.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsBeforeInitialization(AbstractAutowireCapableBeanFactory.java:407) ~[spring-beans-4.3.21.RELEASE.jar:4.3.21.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1623) ~[spring-beans-4.3.21.RELEASE.jar:4.3.21.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:553) ~[spring-beans-4.3.21.RELEASE.jar:4.3.21.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:481) ~[spring-beans-4.3.21.RELEASE.jar:4.3.21.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:312) ~[spring-beans-4.3.21.RELEASE.jar:4.3.21.RELEASE]
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) ~[spring-beans-4.3.21.RELEASE.jar:4.3.21.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:308) ~[spring-beans-4.3.21.RELEASE.jar:4.3.21.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197) ~[spring-beans-4.3.21.RELEASE.jar:4.3.21.RELEASE]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:761) ~[spring-beans-4.3.21.RELEASE.jar:4.3.21.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:867) ~[spring-context-4.3.21.RELEASE.jar:4.3.21.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:543) ~[spring-context-4.3.21.RELEASE.jar:4.3.21.RELEASE]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:693) ~[spring-boot-1.5.18.RELEASE.jar:1.5.18.RELEASE]
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:360) ~[spring-boot-1.5.18.RELEASE.jar:1.5.18.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:303) ~[spring-boot-1.5.18.RELEASE.jar:1.5.18.RELEASE]
at org.springframework.boot.test.context.SpringBootContextLoader.loadContext(SpringBootContextLoader.java:121) ~[spring-boot-test-1.5.18.RELEASE.jar:1.5.18.RELEASE]
at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContextInternal(DefaultCacheAwareContextLoaderDelegate.java:98) ~[spring-test-4.3.21.RELEASE.jar:4.3.21.RELEASE]
at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContext(DefaultCacheAwareContextLoaderDelegate.java:116) ~[spring-test-4.3.21.RELEASE.jar:4.3.21.RELEASE]
... 24 common frames omitted
Caused by: javax.validation.ValidationException: HV000029: Constraint factory returned null when trying to create instance of org.hibernate.validator.internal.constraintvalidators.bv.MaxValidatorForNumber.
at org.hibernate.validator.internal.engine.constraintvalidation.ConstraintValidatorManager.createAndInitializeValidator(ConstraintValidatorManager.java:181) ~[hibernate-validator-5.3.6.Final.jar:5.3.6.Final]
at org.hibernate.validator.internal.engine.constraintvalidation.ConstraintValidatorManager.getInitializedValidator(ConstraintValidatorManager.java:122) ~[hibernate-validator-5.3.6.Final.jar:5.3.6.Final]
at org.hibernate.validator.internal.engine.constraintvalidation.ConstraintTree.getConstraintValidatorNoUnwrapping(ConstraintTree.java:303) ~[hibernate-validator-5.3.6.Final.jar:5.3.6.Final]
at org.hibernate.validator.internal.engine.constraintvalidation.ConstraintTree.getConstraintValidatorInstanceForAutomaticUnwrapping(ConstraintTree.java:244) ~[hibernate-validator-5.3.6.Final.jar:5.3.6.Final]
at org.hibernate.validator.internal.engine.constraintvalidation.ConstraintTree.getInitializedConstraintValidator(ConstraintTree.java:163) ~[hibernate-validator-5.3.6.Final.jar:5.3.6.Final]
at org.hibernate.validator.internal.engine.constraintvalidation.ConstraintTree.validateConstraints(ConstraintTree.java:116) ~[hibernate-validator-5.3.6.Final.jar:5.3.6.Final]
at org.hibernate.validator.internal.engine.constraintvalidation.ConstraintTree.validateConstraints(ConstraintTree.java:87) ~[hibernate-validator-5.3.6.Final.jar:5.3.6.Final]
at org.hibernate.validator.internal.metadata.core.MetaConstraint.validateConstraint(MetaConstraint.java:73) ~[hibernate-validator-5.3.6.Final.jar:5.3.6.Final]
at org.hibernate.validator.internal.engine.ValidatorImpl.validateMetaConstraint(ValidatorImpl.java:621) ~[hibernate-validator-5.3.6.Final.jar:5.3.6.Final]
at org.hibernate.validator.internal.engine.ValidatorImpl.validateConstraint(ValidatorImpl.java:584) ~[hibernate-validator-5.3.6.Final.jar:5.3.6.Final]
at org.hibernate.validator.internal.engine.ValidatorImpl.validateConstraintsForSingleDefaultGroupElement(ValidatorImpl.java:528) ~[hibernate-validator-5.3.6.Final.jar:5.3.6.Final]
at org.hibernate.validator.internal.engine.ValidatorImpl.validateConstraintsForDefaultGroup(ValidatorImpl.java:496) ~[hibernate-validator-5.3.6.Final.jar:5.3.6.Final]
at org.hibernate.validator.internal.engine.ValidatorImpl.validateConstraintsForCurrentGroup(ValidatorImpl.java:461) ~[hibernate-validator-5.3.6.Final.jar:5.3.6.Final]
at org.hibernate.validator.internal.engine.ValidatorImpl.validateInContext(ValidatorImpl.java:411) ~[hibernate-validator-5.3.6.Final.jar:5.3.6.Final]
at org.hibernate.validator.internal.engine.ValidatorImpl.validate(ValidatorImpl.java:208) ~[hibernate-validator-5.3.6.Final.jar:5.3.6.Final]
at org.springframework.validation.beanvalidation.SpringValidatorAdapter.validate(SpringValidatorAdapter.java:103) ~[spring-context-4.3.21.RELEASE.jar:4.3.21.RELEASE]
at org.springframework.validation.DataBinder.validate(DataBinder.java:878) ~[spring-context-4.3.21.RELEASE.jar:4.3.21.RELEASE]
at org.springframework.boot.bind.PropertiesConfigurationFactory.doBindPropertiesToTarget(PropertiesConfigurationFactory.java:289) ~[spring-boot-1.5.18.RELEASE.jar:1.5.18.RELEASE]
at org.springframework.boot.bind.PropertiesConfigurationFactory.bindPropertiesToTarget(PropertiesConfigurationFactory.java:250) ~[spring-boot-1.5.18.RELEASE.jar:1.5.18.RELEASE]
at org.springframework.boot.context.properties.ConfigurationPropertiesBindingPostProcessor.postProcessBeforeInitialization(ConfigurationPropertiesBindingPostProcessor.java:331) ~[spring-boot-1.5.18.RELEASE.jar:1.5.18.RELEASE]
... 42 common frames omitted java.lang.IllegalStateException: Failed to load ApplicationContext at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContext(DefaultCacheAwareContextLoaderDelegate.java:124)
at org.springframework.test.context.support.DefaultTestContext.getApplicationContext(DefaultTestContext.java:83)
at org.springframework.test.context.web.ServletTestExecutionListener.setUpRequestContextIfNecessary(ServletTestExecutionListener.java:189)
at org.springframework.test.context.web.ServletTestExecutionListener.prepareTestInstance(ServletTestExecutionListener.java:131)
at org.springframework.test.context.TestContextManager.prepareTestInstance(TestContextManager.java:230)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.createTest(SpringJUnit4ClassRunner.java:228)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner$1.runReflectiveCall(SpringJUnit4ClassRunner.java:287)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.methodBlock(SpringJUnit4ClassRunner.java:289)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:247)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:94)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:191)
at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47)
at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242)
at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'authorSettings': Could not bind properties to AuthorSettings (prefix=info.author, ignoreInvalidFields=false, ignoreUnknownFields=true, ignoreNestedProperties=false); nested exception is javax.validation.ValidationException: HV000029: Constraint factory returned null when trying to create instance of org.hibernate.validator.internal.constraintvalidators.bv.MaxValidatorForNumber.
at org.springframework.boot.context.properties.ConfigurationPropertiesBindingPostProcessor.postProcessBeforeInitialization(ConfigurationPropertiesBindingPostProcessor.java:336)
at org.springframework.boot.context.properties.ConfigurationPropertiesBindingPostProcessor.postProcessBeforeInitialization(ConfigurationPropertiesBindingPostProcessor.java:292)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsBeforeInitialization(AbstractAutowireCapableBeanFactory.java:407)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1623)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:553)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:481)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:312)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:308)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:761)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:867)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:543)
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:693)
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:360)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:303)
at org.springframework.boot.test.context.SpringBootContextLoader.loadContext(SpringBootContextLoader.java:121)
at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContextInternal(DefaultCacheAwareContextLoaderDelegate.java:98)
at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContext(DefaultCacheAwareContextLoaderDelegate.java:116)
... 24 more
Caused by: javax.validation.ValidationException: HV000029: Constraint factory returned null when trying to create instance of org.hibernate.validator.internal.constraintvalidators.bv.MaxValidatorForNumber.
at org.hibernate.validator.internal.engine.constraintvalidation.ConstraintValidatorManager.createAndInitializeValidator(ConstraintValidatorManager.java:181)
at org.hibernate.validator.internal.engine.constraintvalidation.ConstraintValidatorManager.getInitializedValidator(ConstraintValidatorManager.java:122)
at org.hibernate.validator.internal.engine.constraintvalidation.ConstraintTree.getConstraintValidatorNoUnwrapping(ConstraintTree.java:303)
at org.hibernate.validator.internal.engine.constraintvalidation.ConstraintTree.getConstraintValidatorInstanceForAutomaticUnwrapping(ConstraintTree.java:244)
at org.hibernate.validator.internal.engine.constraintvalidation.ConstraintTree.getInitializedConstraintValidator(ConstraintTree.java:163)
at org.hibernate.validator.internal.engine.constraintvalidation.ConstraintTree.validateConstraints(ConstraintTree.java:116)
at org.hibernate.validator.internal.engine.constraintvalidation.ConstraintTree.validateConstraints(ConstraintTree.java:87)
at org.hibernate.validator.internal.metadata.core.MetaConstraint.validateConstraint(MetaConstraint.java:73)
at org.hibernate.validator.internal.engine.ValidatorImpl.validateMetaConstraint(ValidatorImpl.java:621)
at org.hibernate.validator.internal.engine.ValidatorImpl.validateConstraint(ValidatorImpl.java:584)
at org.hibernate.validator.internal.engine.ValidatorImpl.validateConstraintsForSingleDefaultGroupElement(ValidatorImpl.java:528)
at org.hibernate.validator.internal.engine.ValidatorImpl.validateConstraintsForDefaultGroup(ValidatorImpl.java:496)
at org.hibernate.validator.internal.engine.ValidatorImpl.validateConstraintsForCurrentGroup(ValidatorImpl.java:461)
at org.hibernate.validator.internal.engine.ValidatorImpl.validateInContext(ValidatorImpl.java:411)
at org.hibernate.validator.internal.engine.ValidatorImpl.validate(ValidatorImpl.java:208)
at org.springframework.validation.beanvalidation.SpringValidatorAdapter.validate(SpringValidatorAdapter.java:103)
at org.springframework.validation.DataBinder.validate(DataBinder.java:878)
at org.springframework.boot.bind.PropertiesConfigurationFactory.doBindPropertiesToTarget(PropertiesConfigurationFactory.java:289)
at org.springframework.boot.bind.PropertiesConfigurationFactory.bindPropertiesToTarget(PropertiesConfigurationFactory.java:250)
at org.springframework.boot.context.properties.ConfigurationPropertiesBindingPostProcessor.postProcessBeforeInitialization(ConfigurationPropertiesBindingPostProcessor.java:331)
... 42 more Process finished with exit code -1
@ConfigurationProperties和@value都是将外部属性注入到对象
@ConfigurationProperties很方便使用。 比用@value注解好吗? 在特定的方案中是的,这只是一个选择问题
@EnableConfigurationProperties //开启属性注入,有此注解就可以通过@autowired注入， 是配合@ConfigurationProperties使用的。
如果没有@EnableConfigurationProperties，则使用@ConfigurationProperties注解的class上面还需要添加@Component（@Component的包装注解，譬如
@Configuration、@Service也可以。但本质还是注解@Component）
@EnableAutoConfiguration在Spring boot中是启动自动配置的（Auto-configuration tries to be as intelligent as possible and will back-away as you define more of your own configuration.）
yml：
map结构：
myProps: #自定义的属性和值
simpleProp: simplePropValue
arrayProps: 1,2,3,4,5
listProp1: #List中的元素是Map
- name: abc
value: abcValue
- name: efg
value: efgValue
listProp2:
- config2Value1
- config2Vavlue2
mapProps:
key1: value1
key2: value2
@Component
@ConfigurationProperties(prefix="myProps") //接收application.yml中的myProps下面的属性
public class MyProps {
private String simpleProp;
private String[] arrayProps;
private List<Map<String, String>> listProp1 = new ArrayList<>(); //接收prop1里面的属性值,List中的元素是Map
private List<String> listProp2 = new ArrayList<>(); //接收prop2里面的属性值
private Map<String, String> mapProps = new HashMap<>(); //接收prop1里面的属性值 public String getSimpleProp() {
return simpleProp;
} //String类型的一定需要setter来接收属性值；maps, collections, 和 arrays 不需要
public void setSimpleProp(String simpleProp) {
this.simpleProp = simpleProp;
} public List<Map<String, String>> getListProp1() {
return listProp1;
}
public List<String> getListProp2() {
return listProp2;
} public String[] getArrayProps() {
return arrayProps;
} public void setArrayProps(String[] arrayProps) {
this.arrayProps = arrayProps;
} public Map<String, String> getMapProps() {
return mapProps;
} public void setMapProps(Map<String, String> mapProps) {
this.mapProps = mapProps;
}
}
http://blog.csdn.net/clementad/article/details/51970962
Take a look at the javadoc for ConfigurationProperties for more information on its various configuration options. For example, you can set a prefix to divide your configuration into a number of different namespaces:
@ConfigurationProperties(prefix="foo")
For the binding to work, you'd then have to use the same prefix on the properties declared in application.properties:
foo.users.alice=alpha
foo.users.bob=bravo
注入到Map类型的users字段中， alice和bob是map结构的key，等号后面的是value
一、@ConfigurationProperties注解的使用
看配置文件，我的是yaml格式的配置：
// file application.yml
my:
servers:
- dev.bar.com
- foo.bar.com
- jiaobuchong.com
下面我要将上面的配置属性注入到一个Java Bean类中，看码：
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.stereotype.Component;
import java.util.ArrayList;
import java.util.List;
@Component //不加这个注解的话, 使用@Autowired 就不能注入进去了
@ConfigurationProperties(prefix = "my") // 配置文件中的前缀
public class MyConfig {
private List<String> servers = new ArrayList<String>();
public List<String> getServers() { return this.servers;
}
}下面写一个Controller来测试一下：
@RequestMapping("/test")
@RestController
public class HelloController {
@Autowired
private MyConfig myConfig;
@RequestMapping("/config")
public Object getConfig() {
return myConfig.getServers();
}
}下面运行Application.java的main方法跑一下看看：
@SpringBootApplication
public class Application {
public static void main(String[] args) {
// 启动Spring Boot项目的唯一入口
SpringApplication app = new SpringApplication(Application.class);
app.setBannerMode(Banner.Mode.OFF);
app.run(args);
}在浏览器的地址栏里输入：
localhost:8080/test/config 得到：
[“dev.bar.com”,”foo.bar.com”,”jiaobuchong.com”]
@EnableAutoConfiguration
/**
* Enable auto-configuration of the Spring Application Context, attempting to guess and configure beans that you are likely to need. Auto-configuration classes are usually
* applied based on your classpath and what beans you have defined. For example, If you
* have {@code tomcat-embedded.jar} on your classpath you are likely to want a
* {@link TomcatEmbeddedServletContainerFactory} (unless you have defined your own
* {@link EmbeddedServletContainerFactory} bean).
* <p>
* Auto-configuration tries to be as intelligent as possible and will back-away as you
* define more of your own configuration. You can always manually {@link #exclude()} any
* configuration that you never want to apply (use {@link #excludeName()} if you don't
* have access to them). You can also exclude them via the
* {@code spring.autoconfigure.exclude} property. Auto-configuration is always applied
* after user-defined beans have been registered.
* <p>
* The package of the class that is annotated with {@code @EnableAutoConfiguration} has
* specific significance and is often used as a 'default'. For example, it will be used
* when scanning for {@code @Entity} classes. It is generally recommended that you place
* {@code @EnableAutoConfiguration} in a root package so that all sub-packages and classes
* can be searched.
* <p>
* Auto-configuration classes are regular Spring {@link Configuration} beans. They are
* located using the {@link SpringFactoriesLoader} mechanism (keyed against this class).
* Generally auto-configuration beans are {@link Conditional @Conditional} beans (most
* often using {@link ConditionalOnClass @ConditionalOnClass} and
* {@link ConditionalOnMissingBean @ConditionalOnMissingBean} annotations).
*
* @author Phillip Webb
* @author Stephane Nicoll
* @see ConditionalOnBean
* @see ConditionalOnMissingBean
* @see ConditionalOnClass
* @see AutoConfigureAfter
*/
@SuppressWarnings("deprecation")
@Target(ElementType.TYPE)
@Retention(RetentionPolicy.RUNTIME)
@Documented
@Inherited
@AutoConfigurationPackage
@Import(EnableAutoConfigurationImportSelector.class)
public @interface EnableAutoConfiguration {
二、@ConfigurationProperties和@EnableConfigurationProperties注解结合使用
在spring boot中使用yaml进行配置的一般步骤是，
1、yaml配置文件，这里假设：
my:
webserver:
#HTTP 监听端口
port: 80
#嵌入Web服务器的线程池配置
threadPool:
maxThreads: 100
minThreads: 8
idleTimeout: 600002、
//file MyWebServerConfigurationProperties.java
import org.springframework.boot.context.properties.ConfigurationProperties; @ConfigurationProperties(prefix = "my.webserver") //没有使用@Component或@Confinguration，因此此对象不会注册到Spring容器中，需要@EnableConfigurationProperties引用
public class MyWebServerConfigurationProperties {
private int port;
private ThreadPool threadPool; public int getPort() {
return port;
} public void setPort(int port) {
this.port = port;
} public ThreadPool getThreadPool() {
return threadPool;
} public void setThreadPool(ThreadPool threadPool) {
this.threadPool = threadPool;
} public static class ThreadPool {
private int maxThreads;
private int minThreads;
private int idleTimeout; public int getIdleTimeout() {
return idleTimeout;
} public void setIdleTimeout(int idleTimeout) {
this.idleTimeout = idleTimeout;
} public int getMaxThreads() {
return maxThreads;
} public void setMaxThreads(int maxThreads) {
this.maxThreads = maxThreads;
} public int getMinThreads() {
return minThreads;
} public void setMinThreads(int minThreads) {
this.minThreads = minThreads;
}
}
}
3、
// file: MyWebServerConfiguration.java
import org.springframework.context.annotation.Configuration;
import org.springframework.boot.context.properties.EnableConfigurationProperties; @Configuration
@EnableConfigurationProperties(MyWebServerConfigurationProperties.class)
public class MyWebServerConfiguration {
@Autowired
private MyWebServerConfigurationProperties properties;
/**
*下面就可以引用MyWebServerConfigurationProperties类 里的配置了
*/
public void setMyconfig() {
String port = properties.getPort();
// ...........
}
}
The @EnableConfigurationProperties annotation is automatically applied to your project so that any beans annotated with @ConfigurationProperties will be configured from the Environment properties. This style of configuration works particularly well with the SpringApplication external YAML configuration.(引自spring boot官方手册)
三、@Bean配置第三方组件(Third-party configuration)
创建一个bean类：
// file ThreadPoolBean.java
public class ThreadPoolBean {
private int maxThreads;
private int minThreads;
private int idleTimeout; public int getMaxThreads() {
return maxThreads;
} public void setMaxThreads(int maxThreads) {
this.maxThreads = maxThreads;
} public int getMinThreads() {
return minThreads;
} public void setMinThreads(int minThreads) {
this.minThreads = minThreads;
} public int getIdleTimeout() {
return idleTimeout;
} public void setIdleTimeout(int idleTimeout) {
this.idleTimeout = idleTimeout;
}
}
引用前面第二部分写的配置类：MyWebServerConfiguration.java和MyWebServerConfigurationProperties.java以及yaml配置文件,现在修改MyWebServerConfiguration.java类：
import com.jiaobuchong.springboot.domain.ThreadPoolBean;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
@Configuration //这是一个配置类，与@Service、@Component的效果类似。spring会扫描到这个类，@Bean才会生效，将ThreadPoolBean这个返回值类注册到spring上下文环境中
@EnableConfigurationProperties(MyWebServerConfigurationProperties.class) //通过这个注解, 将MyWebServerConfigurationProperties这个类的配置到上下文环境中,本类中使用的@Autowired注解注入才能生效
public class MyWebServerConfiguration {
@SuppressWarnings("SpringJavaAutowiringInspection") //加这个注解让IDE 不报: Could not autowire
@Autowired
private MyWebServerConfigurationProperties properties;
@Bean //@Bean注解在方法上,返回值是一个类的实例,并声明这个返回值(返回一个对象)是spring上下文环境中的一个bean
public ThreadPoolBean getThreadBean() {
MyWebServerConfigurationProperties.ThreadPool threadPool = properties.getThreadPool();
ThreadPoolBean threadPoolBean = new ThreadPoolBean();
threadPoolBean.setIdleTimeout(threadPool.getIdleTimeout());
threadPoolBean.setMaxThreads(threadPool.getMaxThreads());
threadPoolBean.setMinThreads(threadPool.getMinThreads());
return threadPoolBean;
}
}被@Configuration注解标识的类，通常作为一个配置类，这就类似于一个xml文件，表示在该类中将配置Bean元数据，其作用类似于Spring里面application-context.xml的配置文件，而@Bean标签，则类似于该xml文件中，声明的一个bean实例。
写一个controller测试一下：
import com.jiaobuchong.springboot.domain.ThreadPoolBean;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController; @RequestMapping("/first")
@RestController
public class HelloController {
@Autowired
private ThreadPoolBean threadPoolBean;
@RequestMapping("/testbean")
public Object getThreadBean() {
return threadPoolBean;
}
}
运行Application.java的main方法，
在浏览器里输入：http://localhost:8080/first/testbean
得到的返回值是：
{“maxThreads”:100,”minThreads”:8,”idleTimeout”:60000}
http://blog.csdn.net/jiaobuchong/article/details/50442709
el最常用的几种使用场景：
- 从配置文件中读取属性
- 缺失值情况下，配置默认值
- el内部字符串使用String的方法
- 三目运算符
- 正则表达式
- 注入系统属性（system properties）
- 调用系统原有函数
- 直接注入文件进行操作
- 读取另一个bean的函数的返回值
1、从配置文件中读取属性
application.properties
name=\u8D75\u8BA1\u521A
1 @Value("${name}")//这里必须使用$，使用#是不行的
2 private String name;
3 @RequestMapping(value = "/name", method = RequestMethod.GET)
4 public String getName() {
5 return name;
6 }
注意：记住下边三句话
- ${}不支持表达式（三目表达式不算表达式）；#{}支持
- ${}读取属性文件的值
- ${}读取最后一个满足条件的值；#{}读取所有满足条件的值
2、缺失值情况下，配置默认值
1 @Value("${name2:'刚子'}")//这里必须使用$，使用#是不行的
2 private String name2;
3 @RequestMapping(value = "/name2", method = RequestMethod.GET)
4 public String getName2() {
5 return name2;
6 }
3、el内部字符串使用String的方法
1 name.list=\u8D75\u8BA1\u521A,\u738B\u5A1C
1 @Value("#{'${name.list}'.split(',')}")
2 private List<String> nameList;
3 @RequestMapping(value = "/nameList", method = RequestMethod.GET)
4 public List<String> getNameList() {
5 return nameList;
6 }
4、三目运算符
1 name.three=\u6768\u8FC7
1 @RequestMapping(value = "/nameThree", method = RequestMethod.GET)
2 public String getNameThree(@Value("${name.three!='杨过'?'黄蓉':'小龙女'}") String nameThree) {
3 return nameThree;
4 }
注意：@value可以直接作为入参
5、正则表达式
1 @Value("#{'100' matches '\\d+'}")//这里必须使用#，使用$是不行的
2 private boolean isDigital;
3 @RequestMapping(value = "/nameRegEx", method = RequestMethod.GET)
4 public boolean getNameRegEx() {
5 return isDigital;
6 }
6、注入系统属性
1 @Value("#{systemProperties['os.name']}")//这里必须使用#，使用$是不行的
2 private String osName;
3 @RequestMapping(value = "/osName", method = RequestMethod.GET)
4 public String getOsName() {
5 return osName;
6 }
7、调用系统原有函数
1 @Value("#{T(java.lang.Math).random() * 10}")//注意：这里只生成一次，之后你无论调用多少次getRandomValue()，都返回同一个值
2 private String randomValue;
3 @RequestMapping(value = "/randomValue", method = RequestMethod.GET)
4 public String getRandomValue() {
5 return randomValue;
6 }
8、直接注入文件进行操作
testfile/testEl.txt
1 乔峰--降龙十八掌
2 杨过--黯然销魂掌
1 @Value("classpath:testfile/testEl.txt")
2 private Resource txtResource;
3 @RequestMapping(value = "/resource", method = RequestMethod.GET)
4 public String getResource() {
5 try {
6 return IOUtils.toString(txtResource.getInputStream(), "UTF-8");
7 } catch (IOException e) {
8 ExceptionUtils.getStackTrace(e);
9 }
10 return StringUtils.EMPTY;
11 }
注意：这个很重要，操作文件使用Apache.commons.io.IOUtils来操作。
9、读取另一个bean的函数的返回值
1 @Component("eLComponent")
2 public class ELComponent {
3 public String getNameBean(){
4 return "乔峰";
5 }
6 }
1 @Value("#{eLComponent.getNameBean()}")//这里必须使用#，使用$是不行的
2 private String nameBean;
3 @RequestMapping(value = "/nameBean", method = RequestMethod.GET)
4 public String getNameBean() {
5 return nameBean;
6 }
注意：被调用bean最好指定一下beanName。
http://www.cnblogs.com/java-zhao/archive/2016/07/01/5633881.html
application.properties中的配置：
db.driverClassName=com.mysql.jdbc.Driver
db.url=jdbc:mysql://localhost:3306/mydb?characterEncoding=utf-8&useSSL=false
db.username=xxx
db.password=xxx
import java.beans.PropertyVetoException; import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.env.Environment;
import com.mchange.v2.c3p0.ComboPooledDataSource; @Configuration
public class DBconfig {
@Autowired
private Environment env; @Bean(name="dataSource")
public ComboPooledDataSource dataSource() throws PropertyVetoException {
ComboPooledDataSource dataSource = new ComboPooledDataSource();
dataSource.setDriverClass(env.getProperty("db.driverClassName"));
dataSource.setJdbcUrl(env.getProperty("db.url"));
dataSource.setUser(env.getProperty("db.username"));
dataSource.setPassword(env.getProperty("db.password"));
dataSource.setMaxPoolSize(20);
dataSource.setMinPoolSize(5);
dataSource.setInitialPoolSize(10);
dataSource.setMaxIdleTime(300);
dataSource.setAcquireIncrement(5);
dataSource.setIdleConnectionTestPeriod(60);
return dataSource;
}
}
Spring boot将配置属性注入到bean 专题的更多相关文章
- Spring boot将配置属性注入到bean类中
一.@ConfigurationProperties注解的使用 看配置文件,我的是yaml格式的配置: // file application.yml my: servers: - dev.bar.c ...
- spring boot 全局配置属性一览
# =================================================================== # COMMON SPRING BOOT PROPERTIE ...
- Spring boot 将配置文件属性注入到一个bean中
现在要做的就是将如下配置文件中的内容注入到一个bean 名为Properties中. Redis.properties配置文件中的内容如下: Properties java bean中代码如下,注意注 ...
- 玩转Spring Boot 自定义配置、导入XML配置与外部化配置
玩转Spring Boot 自定义配置.导入XML配置与外部化配置 在这里我会全面介绍在Spring Boot里面如何自定义配置,更改Spring Boot默认的配置,以及介绍各配置的优先 ...
- Spring Boot -- 外部配置的属性使用
Spring Boot允许使用propertities文件.yaml文件或者命令行参数作为外部配置. 命令行参数配置 Spring Boot可以基于jar包运行,打成jar包的程序可以直接通过下面的命 ...
- Spring Boot通过ImportBeanDefinitionRegistrar动态注入Bean
在阅读Spring Boot源码时,看到Spring Boot中大量使用ImportBeanDefinitionRegistrar来实现Bean的动态注入.它是Spring中一个强大的扩展接口.本篇文 ...
- 玩转spring boot——properties配置
前言 在以往的java开发中,程序员最怕大量的配置,是因为配置一多就不好统一管理,经常出现找不到配置的情况.而项目中,从开发测试环境到生产环境,往往需要切换不同的配置,如测试数据库连接换成生产数据库连 ...
- Sping Boot入门到实战之入门篇（四）：Spring Boot自动化配置
该篇为Sping Boot入门到实战系列入门篇的第四篇.介绍Spring Boot自动化配置的基本原理与实现. Spring Boot之所以受开发者欢迎, 其中最重要的一个因素就是其自动化配置特性 ...
- Spring Boot常用配置
概述 本文主要写了下Spring Boot的一些常用配置. Spring Boot基本配置 入口类: Spring Boot通常有一个名为*Application的入口类,入口类里面有一个main方法 ...
随机推荐
- Xposed也要热更新
好久没写博客了.这次玩一点不一样的. 吐槽&起因 相信熟悉Xposed的小伙伴们都知道,每次写完Xposed都要重新启动啊.有木有!反射错了,写错了名字.改一个log,都要重新启动啊有木有!重 ...
- 【福利】微信小程序精选Demo合集
小编最近在开发小程序,也读到了不少优秀的小程序源码,项目中有些需求可以直接从源码里粘贴复制过来,虽然这样做不利于自己独立编写代码,但比较是给公司做项目啊,秉着效率第一的原则,简直没有什么比ctrl+c ...
- [Angular] Pipes as providers
In this example, we are going to see how to use Pipe as providers inject into component. We have the ...
- 【SAE 部署 JavaWeb 项目报 404 错误】
个人学习整理,如有不足之处,请不吝不吝赐教.转载请注明:@CSU-Max 今天写了一个小的 JavaWeb 项目传到 SAE 上.訪问的时候出错. 本地測试是正常的,并且曾经做微信平台开发的时候上传的 ...
- Xcode7 不能使用http网络请求问题解决
最近使用Xcode 7.0 写代码,发送网路请求提示: App Transport Security has blocked a cleartext HTTP (http://) resource ...
- Wpf的布局舍入属性（可以解决软件字体模糊的问题）
原文:Wpf的布局舍入属性(可以解决软件字体模糊的问题) 版权声明:本文为博主原创文章,未经博主允许不得转载. https://blog.csdn.net/HK_JY/article/details/ ...
- easyui样式及js导入顺序及刷新回车的问题
在使用easyui时,需要导入样式表及其js文件,在导入时.不光要遵守jquery包在easyui包的前面,还需要把样式表放在js的前边 <link type="text/css&qu ...
- NSstring封装
来自http://devtang.com/blog/2012/02/14/nsstring-java-like-wrapper/ NSStringWrapper.h #import <Found ...
- 【BZOJ 1014】 [JSOI2008]火星人prefix
[题目链接]:http://www.lydsy.com/JudgeOnline/problem.php?id=1014 [题意] 让你在线查询最长公共前缀. 支持单节点修改; 插入操作; [题解] / ...
- boost::any在降低模块之间耦合性的应用
作者:朱金灿 来源:http://blog.csdn.net/clever101 在开发大型系统中,遵循这样一个原则:模块之间低耦合,模块内高内聚.比如系统中模块有界面模块和算法模块两种,一般是界面模 ...