解决——》MyBatisSystemException: nested exception is org.apache.ibatis.reflection.ReflectionException

怼烎@ 2024-02-19 13:25 38阅读 0赞

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[https://blog.csdn.net/weixin\_43453386/article/details/84136214][https_blog.csdn.net_weixin_43453386_article_details_84136214]

#### 解决——》MyBatisSystemException: nested exception is org.apache.ibatis.reflection.ReflectionException: There is no getter for property named 'renderStatus' in 'class java.lang.Integer' ####

*   *  1、操作
     *  2、现象（错误信息）
     *  3、原因
     *   *  原代码
         *   *  1) DAO层
             *  2) XML层
     *  4、解决
     *   *  第一种方案：DAO代码不变，调整XML代码
         *   *  1) DAO层：不变
             *  2) XML层：调整
         *  第二种方案：DAO代码调整，XML代码不变
         *   *  1) DAO层：调整
             *  2) XML层：不变
     *  5、参考

ion is org.apache.ibatis.reflection.ReflectionException: There is no getter for property named ‘renderStatus’ in ‘class java.lang.Integer’)

### 1、操作 ###

Spring Boot + mybatis，进行查询

### 2、现象（错误信息） ###

org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.reflection.ReflectionException: There is no getter for property named 'renderStatus' in 'class java.lang.Integer'
    
    	at org.mybatis.spring.MyBatisExceptionTranslator.translateExceptionIfPossible(MyBatisExceptionTranslator.java:77)
    	at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:446)
    	at com.sun.proxy.$Proxy114.selectOne(Unknown Source)
    	at org.mybatis.spring.SqlSessionTemplate.selectOne(SqlSessionTemplate.java:166)
    	at org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:82)
    	at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:59)
    	at com.sun.proxy.$Proxy152.countByRenderStatus(Unknown Source)
    	at com.ejudata.platform.service.imp.LayoutMaterialServiceImpl.createRender(LayoutMaterialServiceImpl.java:160)
    	at com.ejudata.platform.test.TestRenderTask.createRender(TestRenderTask.java:25)
    	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.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:252)
    	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)

### 3、原因 ###

在DAO方法中定义的参数 与 实体中定义的属性不一致 导致的。

#### 原代码 ####

##### 1) DAO层 #####

int countByRenderStatus(Integer renderStatus);

##### 2) XML层 #####

<select id="countByRenderStatus" resultType="java.lang.Integer">
    		select count(1) from layout_material
    		where 1=1
    		and render_status = #{renderStatus}
    		<if test="renderStatus==3">and (photo_url is null or photo_url ='')</if>
    		and order_type = 2
    	</select>

### 4、解决 ###

#### 第一种方案：DAO代码不变，调整XML代码 ####

##### 1) DAO层：不变 #####

int countByRenderStatus(Integer renderStatus);

##### 2) XML层：调整 #####

把`<if test="renderStatus==3">`中的 **renderStatus** 改为 **\_parameter**

<select id="countByRenderStatus" resultType="java.lang.Integer">
    		select count(1) from layout_material
    		where 1=1
    		and render_status = #{renderStatus}
    		<if test="_parameter==3">and (photo_url is null or photo_url ='')</if>
    		and order_type = 2
    	</select>

#### 第二种方案：DAO代码调整，XML代码不变 ####

##### 1) DAO层：调整 #####

参数前面加上注解`@Param("renderStatus")`

int countByRenderStatus(@Param("renderStatus") Integer renderStatus);

##### 2) XML层：不变 #####

### 5、参考 ###

[https_blog.csdn.net_weixin_43453386_article_details_84136214]: https://blog.csdn.net/weixin_43453386/article/details/84136214

解决——》MyBatisSystemException: nested exception is org.apache.ibatis.reflection.ReflectionException

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