org.springframework.web.HttpRequestMethodNotSupportedException: Request method

jap代码： 

      <a href="/manager/message/{2}.html"><span>全部会员</span></a> <a href="/manager/message/{1}.html"><span>全部研发会员</span></a> <a href="/manager/message/{0}.html"><span>全部企业会员</span></a> 


controller代码： 
     @RequestMapping(value = "/manager/message/{type}", method = RequestMethod.POST) 
    public String selectUserName(Model m, @PathVariable("type") String type) { 
        m.addAttribute("name", messageService.getUserName(type)); 
        return "manager/message/add"; 
    } 



service代码： 
           public String getUserName(String type); 

实现service代码 
     @Transactional(readOnly = true) 
public String getUserName(String type) { 
    Query query ; 
    if("2".equals(type)){ 
    query = userDao.createQuery("from UsersEntity c where c.userType = 0"); 
    }else{ 
    query = userDao.createQuery("from UsersEntity c where c.userType = 0 and c.type = ?",type); 
    } 
    List<UsersEntity> ls = query.list(); 
List userNames = Lists.newArrayList(); 
for (int i = 0; i < ls.size(); i++) { 
UsersEntity entity = ls.get(i); 
UserVO vo = new UserVO(); 
DozerBeanMapperSingletonWrapper.getInstance().map(entity, vo); 
userNames.add(vo.getUserName()); 
} 
String userName = userNames.toString(); 
String name = userName.substring(1, userName.length()-1); 
return name; 
} 



抛出的异常： 
    org.springframework.web.HttpRequestMethodNotSupportedException: Request method 'GET' not supported 
at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter$ServletHandlerMethodResolver.resolveHandlerMethod(AnnotationMethodHandlerAdapter.java:623) [org.springframework.web.servlet-3.0.5.RELEASE.jar:3.0.5.RELEASE] 
at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:421) [org.springframework.web.servlet-3.0.5.RELEASE.jar:3.0.5.RELEASE] 
at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.handle(AnnotationMethodHandlerAdapter.java:414) [org.springframework.web.servlet-3.0.5.RELEASE.jar:3.0.5.RELEASE] 
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:790) [org.springframework.web.servlet-3.0.5.RELEASE.jar:3.0.5.RELEASE] 
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:719) [org.springframework.web.servlet-3.0.5.RELEASE.jar:3.0.5.RELEASE] 
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:644) [org.springframework.web.servlet-3.0.5.RELEASE.jar:3.0.5.RELEASE] 
at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:549) [org.springframework.web.servlet-3.0.5.RELEASE.jar:3.0.5.RELEASE] 
at javax.servlet.http.HttpServlet.service(HttpServlet.java:621) [servlet-api.jar:na] 
at javax.servlet.http.HttpServlet.service(HttpServlet.java:722) [servlet-api.jar:na] 
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:304) [catalina.jar:7.0.12] 
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) [catalina.jar:7.0.12] 
at net.bull.javamelody.MonitoringFilter.doFilter(MonitoringFilter.java:157) [javamelody-1.27.0.jar:na] 
at net.bull.javamelody.MonitoringFilter.doFilter(MonitoringFilter.java:131) [javamelody-1.27.0.jar:na] 
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) [catalina.jar:7.0.12] 
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) [catalina.jar:7.0.12] 
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88) [org.springframework.web-3.0.5.RELEASE.jar:3.0.5.RELEASE] 
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76) [org.springframework.web-3.0.5.RELEASE.jar:3.0.5.RELEASE] 
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) [catalina.jar:7.0.12] 
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) [catalina.jar:7.0.12] 
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:368) [spring-security-web-3.0.5.RELEASE.jar:3.0.5.RELEASE] 
at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:99) [spring-security-web-3.0.5.RELEASE.jar:3.0.5.RELEASE] 
at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:83) [spring-security-web-3.0.5.RELEASE.jar:3.0.5.RELEASE] 
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380) [spring-security-web-3.0.5.RELEASE.jar:3.0.5.RELEASE] 
at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:109) [spring-security-web-3.0.5.RELEASE.jar:3.0.5.RELEASE] 
at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:83) [spring-security-web-3.0.5.RELEASE.jar:3.0.5.RELEASE] 
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380) [spring-security-web-3.0.5.RELEASE.jar:3.0.5.RELEASE] 
at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:97) [spring-security-web-3.0.5.RELEASE.jar:3.0.5.RELEASE] 
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380) [spring-security-web-3.0.5.RELEASE.jar:3.0.5.RELEASE] 
at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:100) [spring-security-web-3.0.5.RELEASE.jar:3.0.5.RELEASE] 
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380) [spring-security-web-3.0.5.RELEASE.jar:3.0.5.RELEASE] 
at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:78) [spring-security-web-3.0.5.RELEASE.jar:3.0.5.RELEASE] 
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380) [spring-security-web-3.0.5.RELEASE.jar:3.0.5.RELEASE] 
at org.springframework.security.web.authentication.rememberme.RememberMeAuthenticationFilter.doFilter(RememberMeAuthenticationFilter.java:119) [spring-security-web-3.0.5.RELEASE.jar:3.0.5.RELEASE] 
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380) [spring-security-web-3.0.5.RELEASE.jar:3.0.5.RELEASE] 
at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:54) [spring-security-web-3.0.5.RELEASE.jar:3.0.5.RELEASE] 
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380) [spring-security-web-3.0.5.RELEASE.jar:3.0.5.RELEASE] 
at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:35) [spring-security-web-3.0.5.RELEASE.jar:3.0.5.RELEASE] 
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380) [spring-security-web-3.0.5.RELEASE.jar:3.0.5.RELEASE] 
at org.springframework.security.web.authentication.www.BasicAuthenticationFilter.doFilter(BasicAuthenticationFilter.java:177) [spring-security-web-3.0.5.RELEASE.jar:3.0.5.RELEASE] 
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380) [spring-security-web-3.0.5.RELEASE.jar:3.0.5.RELEASE] 
at org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:187) [spring-security-web-3.0.5.RELEASE.jar:3.0.5.RELEASE] 
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380) [spring-security-web-3.0.5.RELEASE.jar:3.0.5.RELEASE] 
at org.springframework.security.captcha.JcaptchaAuthenticationFilter.doFilter(JcaptchaAuthenticationFilter.java:98) [spring-security-captcha-3.0.2.jar:na] 
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380) [spring-security-web-3.0.5.RELEASE.jar:3.0.5.RELEASE] 
at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:105) [spring-security-web-3.0.5.RELEASE.jar:3.0.5.RELEASE] 
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380) [spring-security-web-3.0.5.RELEASE.jar:3.0.5.RELEASE] 
at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:79) [spring-security-web-3.0.5.RELEASE.jar:3.0.5.RELEASE] 
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380) [spring-security-web-3.0.5.RELEASE.jar:3.0.5.RELEASE] 
at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:169) [spring-security-web-3.0.5.RELEASE.jar:3.0.5.RELEASE] 
at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:237) [org.springframework.web-3.0.5.RELEASE.jar:3.0.5.RELEASE] 
at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:167) [org.springframework.web-3.0.5.RELEASE.jar:3.0.5.RELEASE] 
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) [catalina.jar:7.0.12] 
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) [catalina.jar:7.0.12] 
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:240) [catalina.jar:7.0.12] 
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:164) [catalina.jar:7.0.12] 
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:462) [catalina.jar:7.0.12] 
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:164) [catalina.jar:7.0.12] 
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100) [catalina.jar:7.0.12] 
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:562) [catalina.jar:7.0.12] 
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118) [catalina.jar:7.0.12] 
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:395) [catalina.jar:7.0.12] 
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:250) [tomcat-coyote.jar:7.0.12] 
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:188) [tomcat-coyote.jar:7.0.12] 
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:302) [tomcat-coyote.jar:7.0.12] 
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) [na:1.6.0_13] 
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) [na:1.6.0_13] 
at java.lang.Thread.run(Thread.java:619) [na:1.6.0_13] 

@RequestMapping(value = "/manager/message/{type}", method = RequestMethod.POST) 

这句代码的问题，你都指定了访问该controller的方法为Post了，然后页面上用<a>标签的方式是GET方式访问的，肯定报 
org.springframework.web.HttpRequestMethodNotSupportedException: Request method 'GET' not supported 
异常，说是你请求的这个controller不支持GET方式请求。 

具体怎么改你应该知道的。