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baomidou / mybatis-plus

An powerful enhanced toolkit of MyBatis for simplify development
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改变实体类成员变量的顺序,导致报错 #1074

Closed kco1989 closed 5 years ago

kco1989 commented 5 years ago

当前使用版本(必须填写清楚，否则不予处理)

mybatis-plus-boot-starter : 3.1.0

该问题是怎么引起的？*([最新版](https://search.maven.org/search?q=g:com.baomidou%20a:mybatis-)上已修复的会直接close掉)**

最近在学习mybatis-plus,发现一个奇怪的问题,使用的mybatis-plus官方例子 表定义: CREATE TABLE user ( id BIGINT(20) NOT NULL COMMENT '主键ID', user_name VARCHAR(30) NULL DEFAULT NULL COMMENT '姓名', age INT(11) NULL DEFAULT NULL COMMENT '年龄', email VARCHAR(50) NULL DEFAULT NULL COMMENT '邮箱', PRIMARY KEY (id) ); 类定义 @Data @Builder @TableName(value = "user") public class UserBean {

@TableId(type = IdType.NONE)
private Long id;
private Integer age;
private String email;
private String userName;

@Tolerate
public void User() {}

} 然后运行分页查询,程序直接报错,参考代码在 https://github.com/kco1989/test-mybatis-plus.git 的 mybatis-plus-bug分支上(仅仅是测试代码而已) 运行测试类com.kco.SampleTest#pageTest3

如果将UserBean 的age和email调换顺序,再重新运行com.kco.SampleTest#pageTest3,则结果可以正确返回,难倒在将sql的字段解析成java实体类时,还跟成员变量定义的位置有关系??

报错信息

org.springframework.dao.DataIntegrityViolationException: Error attempting to get column 'USER_NAME' from result set. Cause: org.h2.jdbc.JdbcSQLDataException: Data conversion error converting "Jone1" [22018-199] ; Data conversion error converting "Jone1" [22018-199]; nested exception is org.h2.jdbc.JdbcSQLDataException: Data conversion error converting "Jone1" [22018-199]

at org.springframework.jdbc.support.SQLErrorCodeSQLExceptionTranslator.doTranslate(SQLErrorCodeSQLExceptionTranslator.java:246)
at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:72)
at org.mybatis.spring.MyBatisExceptionTranslator.translateExceptionIfPossible(MyBatisExceptionTranslator.java:73)
at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:446)
at com.sun.proxy.$Proxy53.selectList(Unknown Source)
at org.mybatis.spring.SqlSessionTemplate.selectList(SqlSessionTemplate.java:230)
at com.baomidou.mybatisplus.core.override.MybatisMapperMethod.executeForIPage(MybatisMapperMethod.java:125)
at com.baomidou.mybatisplus.core.override.MybatisMapperMethod.execute(MybatisMapperMethod.java:94)
at com.baomidou.mybatisplus.core.override.MybatisMapperProxy.invoke(MybatisMapperProxy.java:61)
at com.sun.proxy.$Proxy61.selectPageVo(Unknown Source)
at com.kco.SampleTest.pageTest3(SampleTest.java:63)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.springframework.test.context.junit4.statements.RunBeforeTestExecutionCallbacks.evaluate(RunBeforeTestExecutionCallbacks.java:74)
at org.springframework.test.context.junit4.statements.RunAfterTestExecutionCallbacks.evaluate(RunAfterTestExecutionCallbacks.java:84)
at org.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks.evaluate(RunBeforeTestMethodCallbacks.java:75)
at org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:86)
at org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:84)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:251)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:97)
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$2.evaluate(ParentRunner.java:268)
at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:190)
at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
at com.intellij.rt.execution.junit.IdeaTestRunner$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.h2.jdbc.JdbcSQLDataException: Data conversion error converting "Jone1" [22018-199] at org.h2.message.DbException.getJdbcSQLException(DbException.java:455) at org.h2.message.DbException.getJdbcSQLException(DbException.java:427) at org.h2.message.DbException.get(DbException.java:194) at org.h2.value.Value.convertTo(Value.java:829) at org.h2.value.Value.convertTo(Value.java:703) at org.h2.value.Value.getInt(Value.java:589) at org.h2.jdbc.JdbcResultSet.getInt(JdbcResultSet.java:350) at com.zaxxer.hikari.pool.HikariProxyResultSet.getInt(HikariProxyResultSet.java) at org.apache.ibatis.type.IntegerTypeHandler.getNullableResult(IntegerTypeHandler.java:37) at org.apache.ibatis.type.IntegerTypeHandler.getNullableResult(IntegerTypeHandler.java:26) at org.apache.ibatis.type.BaseTypeHandler.getResult(BaseTypeHandler.java:81) at org.apache.ibatis.executor.resultset.DefaultResultSetHandler.createUsingConstructor(DefaultResultSetHandler.java:672) at org.apache.ibatis.executor.resultset.DefaultResultSetHandler.createByConstructorSignature(DefaultResultSetHandler.java:655) at org.apache.ibatis.executor.resultset.DefaultResultSetHandler.createResultObject(DefaultResultSetHandler.java:618) at org.apache.ibatis.executor.resultset.DefaultResultSetHandler.createResultObject(DefaultResultSetHandler.java:591) at org.apache.ibatis.executor.resultset.DefaultResultSetHandler.getRowValue(DefaultResultSetHandler.java:397) at org.apache.ibatis.executor.resultset.DefaultResultSetHandler.handleRowValuesForSimpleResultMap(DefaultResultSetHandler.java:354) at org.apache.ibatis.executor.resultset.DefaultResultSetHandler.handleRowValues(DefaultResultSetHandler.java:328) at org.apache.ibatis.executor.resultset.DefaultResultSetHandler.handleResultSet(DefaultResultSetHandler.java:301) at org.apache.ibatis.executor.resultset.DefaultResultSetHandler.handleResultSets(DefaultResultSetHandler.java:194) at org.apache.ibatis.executor.statement.PreparedStatementHandler.query(PreparedStatementHandler.java:65) at org.apache.ibatis.executor.statement.RoutingStatementHandler.query(RoutingStatementHandler.java:79) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.apache.ibatis.plugin.Plugin.invoke(Plugin.java:63) at com.sun.proxy.$Proxy72.query(Unknown Source) at org.apache.ibatis.executor.SimpleExecutor.doQuery(SimpleExecutor.java:63) at org.apache.ibatis.executor.BaseExecutor.queryFromDatabase(BaseExecutor.java:324) at org.apache.ibatis.executor.BaseExecutor.query(BaseExecutor.java:156) at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:109) at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:83) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:148) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:141) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:433) ... 37 more Caused by: java.lang.NumberFormatException: For input string: "Jone1" at java.lang.NumberFormatException.forInputString(NumberFormatException.java:65) at java.lang.Integer.parseInt(Integer.java:580) at java.lang.Integer.parseInt(Integer.java:615) at org.h2.value.Value.convertToInt(Value.java:936) at org.h2.value.Value.convertTo(Value.java:764) ... 73 more

miemieYaho commented 5 years ago

你有复现 demo 吗?

kco1989 commented 5 years ago

复现的demo在 https://github.com/kco1989/test-mybatis-plus.git 的 mybatis-plus-bug分支上 运行测试类com.kco.SampleTest#pageTest3

miemieYaho commented 5 years ago

加上 

@NoArgsConstructor
@AllArgsConstructor

这两个注解,你这是没有空构造函数导致的问题

fantasyado commented 4 years ago

加上

@NoArgsConstructor
@AllArgsConstructor

这两个注解,你这是没有空构造函数导致的问题

这个报错也太迷了吧。。。和Number format 有啥关系

surkaa commented 11 months ago

!!! 终于找到了结局方案!!! 谢谢 @miemieYaho