jsp表单提交数据老是报错：404,求正解

Question

jsp部分：<form action="onsend" method="post">
        
        MessageText:<textarea name="message">${time }</textarea>
        
        <input type="submit" value="提交" />
    </form>
    
 controller部分： @RequestMapping(value="/onsend",method=RequestMethod.POST)
    public ModelAndView producer(@RequestParam("message") String message) {
        System.out.println("------------send to jms");
        ModelAndView mv = new ModelAndView();
        producer.sendMessage(demoQueueDestination, message);
        mv.setViewName("welcome");
        return mv;
    }
    配置文件：web.xml
    <?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://java.sun.com/xml/ns/javaee"  
          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  
          xsi:schemaLocation="http://java.sun.com/xml/ns/javaee 
          http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
          version="3.0">

  <display-name>Archetype Created Web Application</display-name>
  
  <!-- 加载spring的配置文件，例如hibernate、jms等集成 -->
  <context-param>  
      <param-name>contextConfigLocation</param-name>  
      <param-value>
          classpath:spring-root.xml;
         classpath:activemq.xml;
     </param-value>  
  </context-param>
  
  <listener>
      <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>
  
  <servlet>
        <servlet-name>springMVC</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:spring-mvc-dispatch.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>springMVC</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>
       <!-- 处理编码格式 -->
    <filter>  
        <filter-name>characterEncodingFilter</filter-name>  
        <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>  
        <init-param>  
            <param-name>encoding</param-name>  
            <param-value>UTF-8</param-value>  
        </init-param>  
        <init-param>  
            <param-name>forceEncoding</param-name>  
            <param-value>true</param-value>  
        </init-param>  
    </filter>  
    <filter-mapping>  
        <filter-name>characterEncodingFilter</filter-name>  
        <url-pattern>/*</url-pattern>  
    </filter-mapping>
</web-app>

Answer 1

请问解决了吗？？？我现在也遇到这种问题??

Answer 2

求大佬帮忙啊

Answer 3

producer这个方法上面没有路径了吗？比如类上？