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

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https://blog.csdn.net/weixin_43453386/article/details/84136214

解決——》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、現象（錯誤資訊）
  • 3、原因
  • • 原代碼
    • • 1) DAO層
      • 2) XML層
  • 4、解決
  • • 第一種方案：DAO代碼不變，調整XML代碼
    • • 1) DAO層：不變
      • 2) XML層：調整
    • 第二種方案：DAO代碼調整，XML代碼不變
    • • 1) DAO層：調整
      • 2) XML層：不變
  • 5、參考

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，進行查詢

2、現象（錯誤資訊）

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方法中定義的參數 與 實體中定義的屬性不一緻 導緻的。

原代碼

1) DAO層

2) XML層

<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、解決

第一種方案：DAO代碼不變，調整XML代碼

1) DAO層：不變

2) XML層：調整

把

<if test="renderStatus==3">

中的 renderStatus 改為 _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>
           

第二種方案：DAO代碼調整，XML代碼不變

1) DAO層：調整

參數前面加上注解

@Param("renderStatus")

2) XML層：不變

<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>
           

5、參考