Why SpringMVC Request method 'GET' not sup

问题:

I trying @RequestMapping(value = "/test", method = RequestMethod.POST) but is error

Code is

 @Controller
 public class HelloWordController {
 private Logger logger = LoggerFactory.getLogger(HelloWordController.class);

 @RequestMapping(value = "/test", method = RequestMethod.POST)
 public String welcome() {
  logger.info("Spring params is welcome");
  return "/WEB-INF/jsp/welcome";
 }

}

web.xml is

<servlet>
<description>This is Spring MVC DispatcherServlet</description>
<servlet-name>SpringMVC DispatchServlet</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
  <description>SpringContext</description>
  <param-name>contextConfigLocation</param-name>
  <param-value>classpath*:springmvc.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>

  <servlet-mapping>
<servlet-name>SpringMVC DispatchServlet</servlet-name>
<url-pattern>/</url-pattern>

and springmvc.xml is

index.jsp is

<form action="<%=request.getContextPath() %>/test" method="post">
<input type="submit" value="submit"> 
</form>

I input submit botton brower is error

HTTP Status 405 - Request method 'GET' not supported type Status report

message Request method 'GET' not supported

description The specified HTTP method is not allowed for the requested resource (Request method 'GET' not supported).

回答1:

Change

@RequestMapping(value = "/test", method = RequestMethod.POST)

To

@RequestMapping(value = "/test", method = RequestMethod.GET)

回答2:

method = POST will work if you 'post' a form to the url /test.

if you type a url in address bar of a browser and hit enter, it's always a GET request, so you had to specify POST request.

Google for HTTP GET and HTTP POST (there are several others like PUT DELETE). They all have their own meaning.

回答3:

I solved this error by including a get and post request in my controller: method={RequestMethod.POST, RequestMethod.GET}

回答4:

I also had the same issue. I changed it to the following and it worked.

Java :

@RequestMapping(value = "/test", method = RequestMethod.GET)

HTML code:

  <form action="<%=request.getContextPath() %>/test" method="GET">
    <input type="submit" value="submit"> 
    </form>

By default if you do not specify http method in a form it uses GET. To use POST method you need specifically state it.

Hope this helps.