记一次错误，异常：org.springframework.web.servlet.mvc.method.RequestMappingInfoHandlerMapping.handleNoMatch(RequestMappingInfoHandlerMapping.java:201)

完整异常

org.springframework.web.servlet.mvc.method.RequestMappingInfoHandlerMapping.handleNoMatch(RequestMappingInfoHandlerMapping.java:201)
org.springframework.web.servlet.handler.AbstractHandlerMethodMapping.lookupHandlerMethod(AbstractHandlerMethodMapping.java:420)
org.springframework.web.servlet.handler.AbstractHandlerMethodMapping.getHandlerInternal(AbstractHandlerMethodMapping.java:366)
org.springframework.web.servlet.handler.AbstractHandlerMethodMapping.getHandlerInternal(AbstractHandlerMethodMapping.java:66)
org.springframework.web.servlet.handler.AbstractHandlerMapping.getHandler(AbstractHandlerMapping.java:404)
org.springframework.web.servlet.DispatcherServlet.getHandler(DispatcherServlet.java:1233)
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1016)
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:943)
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006)
org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:909)
javax.servlet.http.HttpServlet.service(HttpServlet.java:660)
org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883)
javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
org.apache.shiro.web.servlet.AbstractShiroFilter.executeChain(AbstractShiroFilter.java:449)
org.apache.shiro.web.servlet.AbstractShiroFilter$1.call(AbstractShiroFilter.java:365)
org.apache.shiro.subject.support.SubjectCallable.doCall(SubjectCallable.java:90)
org.apache.shiro.subject.support.SubjectCallable.call(SubjectCallable.java:83)
org.apache.shiro.subject.support.DelegatingSubject.execute(DelegatingSubject.java:383)
org.apache.shiro.web.servlet.AbstractShiroFilter.doFilterInternal(AbstractShiroFilter.java:362)
org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125)
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
com.github.xiaoymin.swaggerbootstrapui.filter.SecurityBasicAuthFilter.doFilter(SecurityBasicAuthFilter.java:84)
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
com.github.xiaoymin.swaggerbootstrapui.filter.ProductionSecurityFilter.doFilter(ProductionSecurityFilter.java:53)
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)

 

 

 

首先看异常信息，，，直接看第一行，，，大概说的是【请求映射信息处理器映射】中的【handle没有匹配】错误，，，

接着直接定位到错误类的错误方法，就是下面这个 👇👇👇，，，

protected HandlerMethod handleNoMatch(Set<RequestMappingInfo> infos, String lookupPath, HttpServletRequest request) throws ServletException {
        RequestMappingInfoHandlerMapping.PartialMatchHelper helper = new RequestMappingInfoHandlerMapping.PartialMatchHelper(infos, request);
        if (helper.isEmpty()) {
            return null;
        } else {
            Set mediaTypes;
            if (helper.hasMethodsMismatch()) {
                mediaTypes = helper.getAllowedMethods();
                if (HttpMethod.OPTIONS.matches(request.getMethod())) {
                    RequestMappingInfoHandlerMapping.HttpOptionsHandler handler = new RequestMappingInfoHandlerMapping.HttpOptionsHandler(mediaTypes);
                    return new HandlerMethod(handler, HTTP_OPTIONS_HANDLE_METHOD);
                } else {
                    throw new HttpRequestMethodNotSupportedException(request.getMethod(), mediaTypes);
                }
            } else if (helper.hasConsumesMismatch()) {
                mediaTypes = helper.getConsumableMediaTypes();
                MediaType contentType = null;
                if (StringUtils.hasLength(request.getContentType())) {
                    try {
                        contentType = MediaType.parseMediaType(request.getContentType());
                    } catch (InvalidMediaTypeException var8) {
                        throw new HttpMediaTypeNotSupportedException(var8.getMessage());
                    }
                }

                throw new HttpMediaTypeNotSupportedException(contentType, new ArrayList(mediaTypes));
            } else if (helper.hasProducesMismatch()) {
                mediaTypes = helper.getProducibleMediaTypes();
                throw new HttpMediaTypeNotAcceptableException(new ArrayList(mediaTypes));
            } else if (helper.hasParamsMismatch()) {
                List<String[]> conditions = helper.getParamConditions();
                throw new UnsatisfiedServletRequestParameterException(conditions, request.getParameterMap());
            } else {
                return null;
            }
        }
    }

 

接着跟着调试，会发现问题是第9行代码出现了问题，13行抛出的该异常，也就是

if (HttpMethod.OPTIONS.matches(request.getMethod())) {
    RequestMappingInfoHandlerMapping.HttpOptionsHandler handler = new RequestMappingInfoHandlerMapping.HttpOptionsHandler(mediaTypes);
    return new HandlerMethod(handler,HTTP_OPTIONS_HANDLE_METHOD);
} else {
    throw new HttpRequestMethodNotSupportedException(request.getMethod(), mediaTypes);
}

结论:

调试就会发现是 【OPTIONS】匹配不上【POST】方法，这样就让我不由得看了看自己方法的方法请求方式,,,

一看真是【GET】，改的和前端一样就好了...

所以前后端分离项目中,,,猴子们的沟通真的很重要啊,,,

像我就是不知道前端什么时候"偷偷"改成了post = =