mybatis--java.lang.IllegalArgumentException: Mapped Statements collection does n

今天整合spring和mybatis的时候有个错误一直出现，搞了半天才搞定。错误如下：

 

java.lang.IllegalArgumentException: Mapped Statements collection does not contain value for

    at org.mybatis.spring.SqlSessionTemplate.wrapException(SqlSessionTemplate.java:371)
    at org.mybatis.spring.SqlSessionTemplate$7$1.doInSqlSession(SqlSessionTemplate.java:344)
    at org.mybatis.spring.SqlSessionTemplate.execute(SqlSessionTemplate.java:173)
    at org.mybatis.spring.SqlSessionTemplate.execute(SqlSessionTemplate.java:155)
    at org.mybatis.spring.SqlSessionTemplate$7.invoke(SqlSessionTemplate.java:339)
    at $Proxy11.getAllUser(Unknown Source)

 

最后终于找到问题，原来是命名空间没写对，如果使用mapper，则

<mapper namespace="com.sitech.mapper.StudentMapper">

namespace中一定要写上Mapper的名称，否则就会报错。

评论

2 楼 小小龙 2012-01-06  

严重: Servlet.service() for servlet spring threw exception
java.lang.IllegalArgumentException: Mapped Statements collection does not contain value for com.bbs.mapper.UsersInfoMapper.listAllUsersInfo
at org.apache.ibatis.session.Configuration$StrictMap.get(Configuration.java:593)
at org.apache.ibatis.session.Configuration.getMappedStatement(Configuration.java:393)
at org.apache.ibatis.binding.MapperMethod.setupCommandType(MapperMethod.java:160)
at org.apache.ibatis.binding.MapperMethod.<init>(MapperMethod.java:48)
at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:37)
at $Proxy12.listAllUsersInfo(Unknown Source)
at com.bbs.service.impl.UsersInfoServiceImpl.listAllUsersInfo(UsersInfoServiceImpl.java:43)
at com.bbs.controller.UsersInfoController.list(UsersInfoController.java:36)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:176)
at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:426)
at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.handle(AnnotationMethodHandlerAdapter.java:414)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:790)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:719)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:644)
at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:549)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
at org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:877)
at org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:594)
at org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1675)
at java.lang.Thread.run(Thread.java:662)
2012-1-6 10:21:40 org.apache.catalina.core.StandardWrapperValve invoke




加上 <mapper resource="mybatis/UsersInfo.xml"/>
就好了
谢谢！

1 楼 gdmao 2011-10-08  

谢谢分享！