尝试在 JSP 中提交表单时出现 IllegalArgumentException [关闭]

Question

尝试在 JSP 中提交表单时出现 IllegalArgumentException。我正在尝试将此请求路由到 spring mvc 控制器。虽然信息很清楚，但我不明白需要更改什么。 这是异常跟踪-

Apr 25, 2017 9:29:29 AM org.apache.catalina.core.StandardWrapperValve invoke SEVERE: Servlet.service() for servlet [EWeb] in context with path [/EWeb] threw exception [Request processing failed; nested exception is java.lang.IllegalStateException: argument type mismatch HandlerMethod details: Controller [com.test.pm.crequest.web.NewRequestController] Method [protected void com.test.pm.crequest.web.NewRequestController.onSubmitAction(javax.servlet.http.HttpServletRequest,javax.servlet.http.HttpServletResponse,java.lang.Object,org.springframework.validation.BindException) throws java.lang.Exception] Resolved arguments: [0] [type=org.apache.catalina.connector.RequestFacade] [value=org.apache.catalina.connector.RequestFacade@102ab327] [1] [type=org.apache.catalina.connector.ResponseFacade] [value=org.apache.catalina.connector.ResponseFacade@4e25c43b] [2] [type=java.lang.Object] [value=java.lang.Object@9ebd244] [3] [type=org.springframework.validation.BeanPropertyBindingResult] [value=org.springframework.validation.BeanPropertyBindingResult: 0 errors] ] with root cause

Answer 1

我把onSubmitMethod中的参数改成：

protected String onSubmitAction(HttpServletRequest request,
        HttpServletResponse response, @ModelAttribute CRequestForm command, BindingResult errors)
        throws Exception {

问题已解决。