mybatis和spring整合mapper代理方法之问题3

你的名字 2022-05-28 09:59 168阅读 0赞

四月 03, 2018 10:47:40 上午 org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions  
信息: Loading XML bean definitions from class path resource \[mybatisAndSpring/springConfig/beans.xml\]  
  
  
java.lang.ClassCastException: com.sun.proxy.$Proxy8 cannot be cast to mybatis.mybatisAndSpring.dao.PersonDao  
  
  
at mybatis.mybatisAndSpring.mapperTest.findPersonByIdTest(mapperTest.java:21)  
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:44)  
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)  
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41)  
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)  
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)  
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:76)  
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)  
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:193)  
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52)  
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191)  
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:42)  
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184)  
at org.junit.runners.ParentRunner.run(ParentRunner.java:236)  
at org.junit.runner.JUnitCore.run(JUnitCore.java:157)  
at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:69)  
at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:234)  
at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:74)  
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 com.intellij.rt.execution.application.AppMain.main(AppMain.java:144)

Process finished with exit code 255

beans.xml配置文件

![20180403145052289][]

mybatisMapper接口：

![20180403145613145][]

测试类：

![20180403145646608][]

问题原因：

使用整合后的mapper代理开发的方法时，beans.xml 配置的接口未mybatisMapper接口。测试类中getbean也是获取此bean的id，但类型接收时确使用PersonDao接口 接收，导致错误。应使用mybatisMapper接口接收。

![20180403150011565][]

[20180403145052289]: /images/20220528/c14115f8ddd24b1c81d7d38bd9713d5d.png
[20180403145613145]: /images/20220528/a4a03a87040544a39e05d93a63994cbb.png
[20180403145646608]: /images/20220528/daa9da95c004423ca0d552983a16bb01.png
[20180403150011565]: /images/20220528/492adb10459b488e9137a533629ba058.png