SpringBoot + mybatis + mysql应用过程中问题记录-问题5( Cause: java.lang.ClassNotFoundException: Cannot find ...)

问题

Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.

2018-10-11 09:36:40.933 ERROR 5728 --- [           main] o.s.boot.SpringApplication               : Application run failed

org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'userController': Unsatisfied dependency expressed through field 'userMapper'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'pisp_pub_userMapper' defined in file [D:\workspace\springbootMyBatisMoreMySql\target\classes\com\lele\demo\mapper\nbsmt2Mapper\pisp_pub_userMapper.class]: Cannot resolve reference to bean 'test1SqlSessionTemplate' while setting bean property 'sqlSessionTemplate'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'test1SqlSessionTemplate' defined in class path resource [com/lele/demo/mybatisDataSoure/config/DataSource1Config.class]: Unsatisfied dependency expressed through method 'testSqlSessionTemplate' parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'test1SqlSessionFactory' defined in class path resource [com/lele/demo/mybatisDataSoure/config/DataSource1Config.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.apache.ibatis.session.SqlSessionFactory]: Factory method 'testSqlSessionFactory' threw exception; nested exception is org.springframework.core.NestedIOException: Failed to parse mapping resource: 'file [D:\workspace\springbootMyBatisMoreMySql\target\classes\mapper\mapper1\pisp_pub_userMapper.xml]'; nested exception is org.apache.ibatis.builder.BuilderException: Error parsing Mapper XML. The XML location is 'file [D:\workspace\springbootMyBatisMoreMySql\target\classes\mapper\mapper1\pisp_pub_userMapper.xml]'. Cause: org.apache.ibatis.builder.BuilderException: Error resolving class. Cause: org.apache.ibatis.type.TypeException: Could not resolve type alias 'lele.demo.entity1.pisp_pub_user'.  Cause: java.lang.ClassNotFoundException: Cannot find class: lele.demo.entity1.pisp_pub_user

     at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:586) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]

     at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:90) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]

     at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:372) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]

     at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1341) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]

     at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:572) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]

     at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:495) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]

     at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:317) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]

     at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]

     at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:315) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]

     at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]

     at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:759) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]

     at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:869) ~[spring-context-5.0.9.RELEASE.jar:5.0.9.RELEASE]

     at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:550) ~[spring-context-5.0.9.RELEASE.jar:5.0.9.RELEASE]

     at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:140) ~[spring-boot-2.0.5.RELEASE.jar:2.0.5.RELEASE]

     at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:780) [spring-boot-2.0.5.RELEASE.jar:2.0.5.RELEASE]

     at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:412) [spring-boot-2.0.5.RELEASE.jar:2.0.5.RELEASE]

     at org.springframework.boot.SpringApplication.run(SpringApplication.java:333) [spring-boot-2.0.5.RELEASE.jar:2.0.5.RELEASE]

     at org.springframework.boot.SpringApplication.run(SpringApplication.java:1277) [spring-boot-2.0.5.RELEASE.jar:2.0.5.RELEASE]

     at org.springframework.boot.SpringApplication.run(SpringApplication.java:1265) [spring-boot-2.0.5.RELEASE.jar:2.0.5.RELEASE]

     at com.lele.demo.SpringbootMyBatisMoreMySqlApplication.main(SpringbootMyBatisMoreMySqlApplication.java:16) [classes/:na]

Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'pisp_pub_userMapper' defined in file [D:\workspace\springbootMyBatisMoreMySql\target\classes\com\lele\demo\mapper\nbsmt2Mapper\pisp_pub_userMapper.class]: Cannot resolve reference to bean 'test1SqlSessionTemplate' while setting bean property 'sqlSessionTemplate'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'test1SqlSessionTemplate' defined in class path resource [com/lele/demo/mybatisDataSoure/config/DataSource1Config.class]: Unsatisfied dependency expressed through method 'testSqlSessionTemplate' parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'test1SqlSessionFactory' defined in class path resource [com/lele/demo/mybatisDataSoure/config/DataSource1Config.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.apache.ibatis.session.SqlSessionFactory]: Factory method 'testSqlSessionFactory' threw exception; nested exception is org.springframework.core.NestedIOException: Failed to parse mapping resource: 'file [D:\workspace\springbootMyBatisMoreMySql\target\classes\mapper\mapper1\pisp_pub_userMapper.xml]'; nested exception is org.apache.ibatis.builder.BuilderException: Error parsing Mapper XML. The XML location is 'file [D:\workspace\springbootMyBatisMoreMySql\target\classes\mapper\mapper1\pisp_pub_userMapper.xml]'. Cause: org.apache.ibatis.builder.BuilderException: Error resolving class. Cause: org.apache.ibatis.type.TypeException: Could not resolve type alias 'lele.demo.entity1.pisp_pub_user'.  Cause: java.lang.ClassNotFoundException: Cannot find class: lele.demo.entity1.pisp_pub_user

     

 原因：

pisp_pub_userMapper.xml文件中parameterType参数类型写错了，

如：

写成了