1. org.springframework.jdbc.UncategorizedSQLException: ConnectionCallback; uncategorized SQLException for SQL []; SQL state [null]; error code [0]; java.lang.InstantiationException: cn.at.bean.domain.ConstantInt; nested exception is java.sql.SQLException: java.lang.InstantiationException: cn.at.bean.domain.ConstantInt
  2. at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:83)
  3. at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:80)
  4. at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:80)
  5. at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:349)
  6. at cn.at.mo.framework.dao.AbstractStorage.execute(AbstractStorage.java:133)
  7. at cn.at.mo.framework.dao.AbstractStorage.execute(AbstractStorage.java:168)
  8. at cn.at.mo.framework.dao.AbstractStorage.executeQuery(AbstractStorage.java:93)
  9. at cn.at.mo.framework.dao.dao.impl.AbstractDao.findBySql(AbstractDao.java:367)
  10. at cn.at.dao.ConstantIntDao.getCommentId(ConstantIntDao.java:43)
  11. at cn.at.dao.TestConstantIntDao.testGetCommentId(TestConstantIntDao.java:41)
  12. at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  13. at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
  14. at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
  15. at java.lang.reflect.Method.invoke(Method.java:601)
  16. at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47)
  17. at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
  18. at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)
  19. at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
  20. at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
  21. at org.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks.evaluate(RunBeforeTestMethodCallbacks.java:74)
  22. at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)
  23. at org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:83)
  24. at org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:72)
  25. at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:231)
  26. at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:88)
  27. at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238)
  28. at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63)
  29. at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236)
  30. at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53)
  31. at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229)
  32. at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
  33. at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:71)
  34. at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
  35. at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:174)
  36. at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
  37. at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
  38. at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
  39. at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
  40. at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
  41. at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
  42. Caused by: java.sql.SQLException: java.lang.InstantiationException: cn.at.bean.domain.ConstantInt
  43. at cn.at.mo.framework.dao.CrudBuilder.from(CrudBuilder.java:471)
  44. at cn.at.mo.framework.dao.dao.impl.AbstractDao.from(AbstractDao.java:398)
  45. at cn.at.mo.framework.dao.dao.impl.AbstractDao$5.execute(AbstractDao.java:371)
  46. at cn.at.mo.framework.dao.AbstractStorage$5.execute(AbstractStorage.java:102)
  47. at cn.at.mo.framework.dao.AbstractStorage$8.execute(AbstractStorage.java:172)
  48. at cn.at.mo.framework.dao.AbstractStorage$7.doInConnection(AbstractStorage.java:136)
  49. at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:342)
  50. ... 36 more
  51. Caused by: java.lang.InstantiationException: cn.at.bean.domain.ConstantInt
  52. at java.lang.Class.newInstance0(Class.java:357)
  53. at java.lang.Class.newInstance(Class.java:325)
  54. at cn.at.mo.framework.dao.CrudBuilder.from(CrudBuilder.java:426)
  55. ... 42 more
 
每个bean对象 都应该有一个默认无参数的构造方法 负责查询的时候 通过反射的方式实例化的时候 就会抛出无法实例化的情况  

Caused by: java.lang.InstantiationException: cn.at.bean.domain.ConstantInt的更多相关文章

  1. java.lang.NoSuchMethodException: cn.pb.bean.Category.<init>()报错

    代码如下: package cn.pb.bean; import java.util.ArrayList;import java.util.List; /** * 分类的实体类 */public cl ...

  2. 整合spring boot时操作数据库时报错Caused by: java.lang.InstantiationException: tk.mybatis.mapper.provider.base.B

    原文:https://blog.csdn.net/u__f_o/article/details/82756701 一般出现这种情况,应该是没有扫描到对应的mapper包,即在启动类下配置MapperS ...

  3. Caused by: java.lang.UnsupportedClassVersionError: com/zy/example/domain/Student : Unsupported major.minor version 51.0

    JVM的版本比jdk的版本老,即JVM的版本低于jdk的版本.换个新版本的就可以解决问题.

  4. Error invoking SqlProvider method (com.github.abel533.mapper.MapperProvider.dynamicSQL). Cause: java.lang.InstantiationException: com.github.abel533.mapper.MapperProvider

    org.apache.ibatis.exceptions.PersistenceException: ### Error querying database.  Cause: org.apache.i ...

  5. Caused by: java.lang.ClassNotFoundException: Could not load requested class :XXX.XXX.XXX 异常处理

    在ssh整合中:出现的异常 Exception sending context initialized event to listener instance of class org.springfr ...

  6. Spring.之.报错:Caused by: java.lang.IllegalArgumentException: No Spring Session store is configured: set the 'spring.session.store-type' property

    Spring.之.报错 No Spring Session store is configured springboot在启动的时候报如下错误: Error starting ApplicationC ...

  7. Caused by: java.lang.NoSuchMethodError: javax.persistence.spi.PersistenceUnitInfo.getValidationMode

    进行 spring mvc jpa整合时.Junit方法测试时. 异常: org.springframework.beans.factory.BeanCreationException: Error ...

  8. 异常:Caused by: java.lang.NoClassDefFoundError: Could not initialize class net.sf.log4jdbc.Properties

    参考文章: 使用Log4jdbc-log4j2监听MyBatis中运行的SQL和Connection 使用 log4jdbc格式化输出SQL,maven配置如下: <dependency> ...

  9. Caused by: java.lang.NoClassDefFoundError: freemarker/cache/TemplateLoader

    1.错误描写叙述 usage: java org.apache.catalina.startup.Catalina [ -config {pathname} ] [ -nonaming ] { -he ...

随机推荐

  1. 1062.Talent and Virtue

    About 900 years ago, a Chinese philosopher Sima Guang wrote a history book in which he talked about ...

  2. react-native中的style

    在 React Native 中,你并不需要学习什么特殊的语法来定义样式.我们仍然是使用 JavaScript 来写样式. 所有的核心组件都接受名为style的属性.这些样式名基本上是遵循了 web ...

  3. 团体程序设计天梯赛(CCCC) L3014 周游世界 BFS证明

    团体程序设计天梯赛代码.体现代码技巧,比赛技巧.  https://github.com/congmingyige/cccc_code

  4. Java String与Stringbuffer

    String 与其它类型的转换,e.g. BigInteger Stringbuffer 诸多函数,replace…… String 不能修改,Stringbuffer 可以修改, 应避免以下的操作: ...

  5. spring整合redis连接

    两种连接方式:(写了一半,未测试) spring xml: <?xml version="1.0" encoding="UTF-8"?> <b ...

  6. 【译】3. Java反射——构造函数

    原文地址:http://tutorials.jenkov.com/java-reflection/constructors.html ================================= ...

  7. 计算机基础:计算机网络-chapter4 网络层

    网络层的使用:如 ping,tracert,原理是ICMP 一.什么叫网络,网络层做什么,通过什么实现,这章的内容, 什么叫网络,实现这些需要做什么 将全世界范围内数以百万计的网络都互连起来,并且能够 ...

  8. glob.glob 匹配文件

    glob.glob以列表形式返回匹配的文件路径 只有一个参数:文件的匹配规则 e.g. >>>res_home = '/vip_data_center/test_envs/train ...

  9. Error:Failed to resolve: :Base:

    这个问题是变通了一下,原来是: //implementation(name: "Base", ext: "aar") 修改成: implementation f ...

  10. mysql中使用存储过程方法中的注意事项

    public function getFxOrderList($openId,$condition='',$curentPage=1,$pagesize =10){ return $this-> ...