接手前人代码,出现意想不到的问题

问题遇到的现象和发生背景

我在公司时间不长去年九月入职,我之前岗位上的人11月份离职他把之前项目的代码给我了.其中有一个项目之前我就没接触过,然后本地登录出现问题.
这个项目是嵌套在别人项目里的,可以从别人的项目进入网页,但本地运行就不行.

问题相关代码，请勿粘贴截图

登录接口代码:
@RequestMapping("login")
@ResponseBody
public Status save(HttpServletRequest request,HttpSession sen,@Valid @RequestBody User user) {

     // 获取当前的Subject
        Status status = null;
        User user2 = null;

        Subject subject = SecurityUtils.getSubject();
        try {
            UsernamePasswordToken token = new UsernamePasswordToken(user.getUserName(), user.getPassword());
            if (subject.isAuthenticated()) {
                //token.setRememberMe(true);
                subject.logout();
            }
            subject.login(token);
        } catch (IncorrectCredentialsException ice) {

            status = new Status(Status.ERROR, ShiroStatusCodeEnum.USER_INCORRECT_CREDENTIALS_ERROR, ShiroStatusMsgEnum.USER_INCORRECT_CREDENTIALS_ERROR);
            System.out.println("IncorrectCredentialsException ice");
        } catch (UnknownAccountException uae) {

            System.out.println("UnknownAccountException ice");
            status = new Status(Status.ERROR, ShiroStatusCodeEnum.USER_INCORRECT_CREDENTIALS_ERROR, ShiroStatusMsgEnum.USER_INCORRECT_CREDENTIALS_ERROR);
        } catch (ExcessiveAttemptsException eae) {
            System.out.println("ExcessiveAttemptsException ice");

            status = new Status(Status.ERROR, ShiroStatusCodeEnum.UNKNOWN_ERROR, ExcessiveAttemptsException.class.getName());
        }

        if(status==null) {
             user2 = userService.getByUsername(user.getUserName());
            //user2 = (User) SecurityUtils.getSubject().getSession().getAttribute("user");
            status = new Status<User>(user2);
        }else{
            subject.logout();
        }


    return status;
}

运行结果及报错内容

运行结果不报错但是无法登录,将@RequestMapping该为@PostMapping就可以登录但是会报

09:36:48 [http-nio-8090-exec-4] ERROR com.dh.config.WebExceptionHandle - Exception 参数解析失败
org.springframework.web.HttpRequestMethodNotSupportedException: Request method 'GET' not supported
    at org.springframework.web.servlet.mvc.method.RequestMappingInfoHandlerMapping.handleNoMatch(RequestMappingInfoHandlerMapping.java:200)
    at org.springframework.web.servlet.handler.AbstractHandlerMethodMapping.lookupHandlerMethod(AbstractHandlerMethodMapping.java:422)
    at org.springframework.web.servlet.handler.AbstractHandlerMethodMapping.getHandlerInternal(AbstractHandlerMethodMapping.java:368)
    at org.springframework.web.servlet.handler.AbstractHandlerMethodMapping.getHandlerInternal(AbstractHandlerMethodMapping.java:65)
    at org.springframework.web.servlet.handler.AbstractHandlerMapping.getHandler(AbstractHandlerMapping.java:401)
    at org.springframework.web.servlet.DispatcherServlet.getHandler(DispatcherServlet.java:1231)
    at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1014)
    at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:942)
    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1005)
    at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:897)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:634)
    at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:882)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    at org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:61)
    at org.apache.shiro.web.servlet.AdviceFilter.executeChain(AdviceFilter.java:108)
    at org.apache.shiro.web.servlet.AdviceFilter.doFilterInternal(AdviceFilter.java:137)
    at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125)
    at org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:66)
    at org.apache.shiro.web.servlet.AbstractShiroFilter.executeChain(AbstractShiroFilter.java:449)
    at org.apache.shiro.web.servlet.AbstractShiroFilter$1.call(AbstractShiroFilter.java:365)
    at org.apache.shiro.subject.support.SubjectCallable.doCall(SubjectCallable.java:90)
    at org.apache.shiro.subject.support.SubjectCallable.call(SubjectCallable.java:83)
    at org.apache.shiro.subject.support.DelegatingSubject.execute(DelegatingSubject.java:383)
    at org.apache.shiro.web.servlet.AbstractShiroFilter.doFilterInternal(AbstractShiroFilter.java:362)
    at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:99)
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:92)
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:93)
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:200)
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:199)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:490)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
    at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408)
    at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
    at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:791)
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1417)
    at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
    at java.lang.Thread.run(Thread.java:748)

而且会一直发送get请求

我的解答思路和尝试过的方法

我之前问过一次说是参数不全但我下来测试过参数都是有的

我想要达到的结果

只求问题解决,能够本地登录

登录没有反应，有可能是url路径的问题，检查一下

怀疑问题还是出在注解上了，那换成post请求可以正常请求到后端是吧，我先确认下

这个错误是哪行爆出来的

你用postman测一下这个方法，post方式

难不成跨域了