一个错误会浪费好多青春绳命

鉴于此，为了不让大家也走弯路，分享解决方案。

【错误代码提示】

StandardWrapper.Throwable
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'userHandler': Injection of resource dependencies failed;

【完整错误代码】

StandardWrapper.Throwable

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'userHandler': Injection of resource dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'userServiceImpl': Injection of resource dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'userMapper' defined in file [D:\tomcat\webapps\ktyh\WEB-INF\classes\com\hyh\mapper\UserMapper.class]: Invocation of init method failed; nested exception is java.lang.IllegalArgumentException: org.apache.ibatis.builder.BuilderException: Error parsing Mapper XML. Cause: java.lang.NullPointerException

    at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.postProcessPropertyValues(CommonAnnotationBeanPostProcessor.java:306)

    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1106)

    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:517)

    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456)

    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:294)

    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:225)

    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:291)

    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193)

    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:585)

    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:913)

    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:464)

    at org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:631)

    at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:588)

    at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:645)

    at org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:508)

    at org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:449)

    at org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:133)

    at javax.servlet.GenericServlet.init(GenericServlet.java:158)

    at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1282)

    at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1195)

    at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:1085)

    at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:5318)

    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5610)

    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:147)

    at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:899)

    at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:875)

    at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:652)

    at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1259)

    at org.apache.catalina.startup.HostConfig$DeployDirectory.run(HostConfig.java:1998)

    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)

    at java.util.concurrent.FutureTask.run(FutureTask.java:262)

    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)

    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)

    at java.lang.Thread.run(Thread.java:745)

Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'userServiceImpl': Injection of resource dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'userMapper' defined in file [D:\tomcat\webapps\ktyh\WEB-INF\classes\com\hyh\mapper\UserMapper.class]: Invocation of init method failed; nested exception is java.lang.IllegalArgumentException: org.apache.ibatis.builder.BuilderException: Error parsing Mapper XML. Cause: java.lang.NullPointerException

    at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.postProcessPropertyValues(CommonAnnotationBeanPostProcessor.java:306)

    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1106)

    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:517)

    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456)

    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:294)

    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:225)

    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:291)

    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197)

    at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.autowireResource(CommonAnnotationBeanPostProcessor.java:442)

    at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.getResource(CommonAnnotationBeanPostProcessor.java:416)

    at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor$ResourceElement.getResourceToInject(CommonAnnotationBeanPostProcessor.java:549)

    at org.springframework.beans.factory.annotation.InjectionMetadata$InjectedElement.inject(InjectionMetadata.java:150)

    at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:87)

    at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.postProcessPropertyValues(CommonAnnotationBeanPostProcessor.java:303)

    ... 33 more

Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'userMapper' defined in file [D:\tomcat\webapps\ktyh\WEB-INF\classes\com\hyh\mapper\UserMapper.class]: Invocation of init method failed; nested exception is java.lang.IllegalArgumentException: org.apache.ibatis.builder.BuilderException: Error parsing Mapper XML. Cause: java.lang.NullPointerException

    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1455)

    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:519)

    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456)

    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:294)

    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:225)

    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:291)

    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197)

    at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.autowireResource(CommonAnnotationBeanPostProcessor.java:442)

    at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.getResource(CommonAnnotationBeanPostProcessor.java:416)

    at org.springframework.context.annotation.CommonAnnotationBeanPostPro

cessor$ResourceElement.getResourceToInject(CommonAnnotationBeanPostProcessor.java:549)

    at org.springframework.beans.factory.annotation.InjectionMetadata$InjectedElement.inject(InjectionMetadata.java:150)

    at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:87)

    at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.postProcessPropertyValues(CommonAnnotationBeanPostProcessor.java:303)

    ... 46 more

Caused by: java.lang.IllegalArgumentException: org.apache.ibatis.builder.BuilderException: Error parsing Mapper XML. Cause: java.lang.NullPointerException

    at org.mybatis.spring.mapper.MapperFactoryBean.checkDaoConfig(MapperFactoryBean.java:100)

    at org.springframework.dao.support.DaoSupport.afterPropertiesSet(DaoSupport.java:44)

    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1514)

    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1452)

    ... 58 more

Caused by: org.apache.ibatis.builder.BuilderException: Error parsing Mapper XML. Cause: java.lang.NullPointerException

    at org.apache.ibatis.builder.xml.XMLMapperBuilder.configurationElement(XMLMapperBuilder.java:120)

    at org.apache.ibatis.builder.xml.XMLMapperBuilder.parse(XMLMapperBuilder.java:92)

    at org.apache.ibatis.builder.annotation.MapperAnnotationBuilder.loadXmlResource(MapperAnnotationBuilder.java:166)

    at org.apache.ibatis.builder.annotation.MapperAnnotationBuilder.parse(MapperAnnotationBuilder.java:118)

    at org.apache.ibatis.binding.MapperRegistry.addMapper(MapperRegistry.java:71)

    at org.apache.ibatis.session.Configuration.addMapper(Configuration.java:651)

    at org.mybatis.spring.mapper.MapperFactoryBean.checkDaoConfig(MapperFactoryBean.java:97)

    ... 61 more

Caused by: java.lang.NullPointerException

    at org.apache.ibatis.builder.xml.XMLMapperBuilder.configurationElement(XMLMapperBuilder.java:109)

    ... 67 more

六月 01, 2016 10:18:32 上午 org.apache.catalina.core.StandardContext loadOnStartup

严重: Servlet [springmvc] in web application [/ktyh] threw load() exception

java.lang.NullPointerException

    at org.apache.ibatis.builder.xml.XMLMapperBuilder.configurationElement(XMLMapperBuilder.java:109)

    at org.apache.ibatis.builder.xml.XMLMapperBuilder.parse(XMLMapperBuilder.java:92)

    at org.apache.ibatis.builder.annotation.MapperAnnotationBuilder.loadXmlResource(MapperAnnotationBuilder.java:166)

    at org.apache.ibatis.builder.annotation.MapperAnnotationBuilder.parse(MapperAnnotationBuilder.java:118)

    at org.apache.ibatis.binding.MapperRegistry.addMapper(MapperRegistry.java:71)

    at org.apache.ibatis.session.Configuration.addMapper(Configuration.java:651)

    at org.mybatis.spring.mapper.MapperFactoryBean.checkDaoConfig(MapperFactoryBean.java:97)

    at org.springframework.dao.support.DaoSupport.afterPropertiesSet(DaoSupport.java:44)

    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1514)

    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1452)

    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:519)

    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456)

    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:294)

    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:225)

    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:291)

    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197)

    at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.autowireResource(CommonAnnotationBeanPostProcessor.java:442)

    at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.getResource(CommonAnnotationBeanPostProcessor.java:416)

    at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor$ResourceElement.getResourceToInject(CommonAnnotationBeanPostProcessor.java:549)

    at org.springframework.beans.factory.annotation.InjectionMetadata$InjectedElement.inject(InjectionMetadata.java:150)

    at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:87)

    at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.postProcessPropertyValues(CommonAnnotationBeanPostProcessor.java:303)

    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1106)

    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:517)

    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456)

    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:294)

    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:225)

    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:291)

    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197)

    at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.autowireResource(CommonAnnotationBeanPostProcessor.java:442)

    at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.getResource(CommonAnnotationBeanPostProcessor.java:416)

    at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor$ResourceElement.getResourceToInject(CommonAnnotationBeanPostProcessor.java:549)

    at org.springframework.beans.factory.annotation.InjectionMetadata$InjectedElement.inject(InjectionMetadata.java:150)

    at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:87)

    at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.postProcessPropertyValues(CommonAnnotationBeanPostProcessor.java:303)

    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1106)

    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:517)

    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456)

    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:294)

    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:225)

    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:291)

    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193)

    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:585)

    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:913)

    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:464)

    at org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:631)

    at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:588)

    at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:645)

    at org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:508)

    at org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:449)

    at org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:133)

    at javax.servlet.GenericServlet.init(GenericServlet.java:158)

    at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1282)

    at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1195)

    at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:1085)

    at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:5318)

    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5610)

    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:147)

    at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:899)

    at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:875)

    at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:652)

    at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1259)

    at org.apache.catalina.startup.HostConfig$DeployDirectory.run(HostConfig.java:1998)

    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)

    at java.util.concurrent.FutureTask.run(FutureTask.java:262)

    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)

    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)

    at java.lang.Thread.run(Thread.java:745)

【出现错误的背景】

在使用Spring+SpringMVC+Mybatis SSM集成框架时，服务器启动就会报错。

【错误根源】

XML配置错误。

【解决方案】

第一步、查找springmvc.xml 配置文件中 是否添加了扫描注解的范围。

<!-- 开启扫描注解 -->

    <context:component-scan base-package=""></context:component-scan>

（重要）base-package中要添加扫描注解范围。

<!-- 开启扫描注解 -->

    <context:component-scan base-package="com.hyh.action,com.hyh.service.impl"></context:component-scan>

如果上一步没问题的话，看下面

第二步、检查mapper包中的xml。

<mapper >

    <!-- 完成用户的账户信息验证 -->

    <select id="userLogin" parameterType="com.hyh.entity.User"

        resultType="com.hyh.entity.User">

        select * from userInfo where phone=#{phone} and accoundpwd=#{accountpwd}

    </select>

</mapper>

（重要）mapper 标签中，一定要写namespace。

如下：

<mapper namespace="com.hyh.mapper.UserMapper">

    <!-- 完成用户的账户信息验证 -->

    <select id="userLogin" parameterType="com.hyh.entity.User"

        resultType="com.hyh.entity.User">

        select * from userInfo where phone=#{phone} and accoundpwd=#{accountpwd}

    </select>

</mapper>

一般出现这些问题，无非是粗心、粗心、还是粗心。

另外一定要记住：有些关键字，能复制就复制，打字容易错。

（如果能解决，请点个赞！）

【解决方案】 org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'userHandler': Injection of resource dependencies failed;的更多相关文章

  1. org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'supplierAction': Injection of resource dependencies failed; nested exception is org.springframework.beans.factor

    这个错误是因为抽象Action类的时候,把ServletContext写成了serverContext,导致无法注入,正确写法是 import javax.annotation.Resource; i ...

  2. Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'fundService': Injection of resource dependencies failed;

    在进行SSM的Controller的编写, 从浏览器访问后端Controller的时候遇到了这个问题. 这个问题的描述: 创建Bean的对象失败 错误代码如下: @Service("fund ...

  3. Error creating bean with name 'testController': Injection of resource dependencies failed;

    启动ssm项目报错: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 't ...

  4. Java报错：Error creating bean with name 'testController': Injection of resource dependencies failed

    报错如下: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'testCo ...

  5. org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'catchFromPBomService': Cannot create inner bean '(inner bean)#302efb82' of type [com.thinkgem.jeesite.modules.fd

    org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'catchFromPBo ...

  6. ssh整合报错严重: Context initialization failed org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'xxx'

    错误描述:eclipse整合ssh的时候 报不能创建名字为xxx的对象 信息: Destroying singletons in org.springframework.beans.factory.s ...

  7. aused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sessionFactory' defined in class path resource [applicationContext.xml]: Invocation of init method fai

    org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'roleDaoImpl' ...

  8. 严重: StandardWrapper.Throwable org.springframework.beans.factory.BeanCreationException: Error creating bean with name

    HTTP Status 500 - Servlet.init() for servlet mybatis threw exception type Exception report message S ...

  9. org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.mybatis.spring.mapper.MapperScannerConfigurer#0'

    七月 05, 2018 10:26:54 上午 org.apache.tomcat.util.digester.SetPropertiesRule begin警告: [SetPropertiesRul ...

随机推荐

  1. ABP入门系列（2）——通过模板创建MAP版本项目

    一.从官网创建模板项目 进入官网下载模板项目 依次按下图选择: 输入验证码开始下载 下载提示: 二.启动项目 使用VS2015打开项目,还原Nuget包: 设置以Web结尾的项目,设置为启动项目: 打 ...

  2. 记一个mvn奇怪错误： Archive for required library: 'D:/mvn/repos/junit/junit/3.8.1/junit-3.8.1.jar' in project 'xxx' cannot be read or is not a valid ZIP file

    我的maven 项目有一个红色感叹号, 而且Problems 存在 errors : Description Resource Path Location Type Archive for requi ...

  3. jquery.cookie的使用

    今天想到了要为自己的影像日记增加赞的功能,并且需要用到cookie. 记得原生的js操作cookie也不是很麻烦的,但似乎jquery更简单,不过相比原生js,需要额外引入2个文件,似乎又不是很好,但 ...

  4. javascript动画系列第二篇——磁性吸附

    × 目录 [1]范围限定 [2]拖拽范围 [3]磁性吸附 前面的话 上一篇,我们介绍了元素拖拽的实现.但在实际应用中,常常需要为拖拽的元素限定范围.而通过限定范围,再增加一些辅助的措施,就可以实现磁性 ...

  5. 微软发布VSBT,无需安装Visual Studio即可实现项目编译

    安装了Visual Studio的那些使用微软平台的开发者通常能够非常容易地操作自己的项目:打开解决方案,修改内容,设置好所有必须的文件以及配置后编译项目.但是在构建服务器或者持续交付系统等没有安装V ...

  6. Java 程序优化 (读书笔记)

    --From : JAVA程序性能优化 (葛一鸣,清华大学出版社,2012/10第一版) 1. java性能调优概述 1.1 性能概述 程序性能: 执行速度,内存分配,启动时间, 负载承受能力. 性能 ...

  7. 海康网络摄像机YV12转换为BGR,由opencv Mat显示 （转）

    我使用的是海康DS-2CD852MF-E, 200万,网络摄像机,已经比较老了,不过SDK在海康官网下载的,开发流程都差不多. 海康摄像机回调解码后的视频数据格式为YV12,顺便说一下YV12的数据格 ...

  8. DDD领域驱动设计 - 设计文档模板

    设计文档模板: 系统背景和定位 业务需求描述 系统用例图 关键业务流程图 领域语言整理,主要是整理领域中的各种术语的定义,名词解释 领域划分(分析出子域.核心域.支撑域) 每个子域的领域模型设计(实体 ...

  9. Configure a bridged network interface for KVM using RHEL 5.4 or later?

    environment Red Hat Enterprise Linux 5.4 or later Red Hat Enterprise Linux 6.0 or later KVM virtual ...

  10. 我的MYSQL学习心得（十三） 权限管理

    我的MYSQL学习心得(十三) 权限管理 我的MYSQL学习心得(一) 简单语法 我的MYSQL学习心得(二) 数据类型宽度 我的MYSQL学习心得(三) 查看字段长度 我的MYSQL学习心得(四) ...