Java Spring-已经有处理程序[com.application.myGoogleAppEngine.controller]。MapController@978068]映射

我有以下错误。我不明白为什么

[信息]javax.servlet.UnavailableException:org.springframework.beans.factory.BeanCreationException:创建名为“org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping”的bean时出错：bean初始化失败；嵌套异常为java.lang.IllegalStateException:无法将处理程序[mapController]映射到URL路径[/map.jsp]：已存在处理程序[com.application.myGoogleAppEngine.controller]。MapController@978068]映射

你有什么解决办法吗

web.xml

<?xml version="1.0" encoding="utf-8"?>
<web-app
    version="2.5"
    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_2_5.xsd">

    <servlet>
    <servlet-name>spring</servlet-name>
             <servlet-class>
                 org.springframework.web.servlet.DispatcherServlet
             </servlet-class>
            <load-on-startup>1</load-on-startup>
    </servlet>

    <servlet-mapping>
    <servlet-name>spring</servlet-name>
        <url-pattern>*.jsp</url-pattern>
    </servlet-mapping>

</web-app>

MapController.java：

package com.application.myGoogleAppEngine.controller;

import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.http.HttpServletResponse;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.servlet.ModelAndView;

@Controller
@RequestMapping("/map.jsp")
public class MapController {

    @RequestMapping(method=RequestMethod.GET)
public ModelAndView initForm(HttpServletResponse res){

           try{       
                 PrintWriter out = res.getWriter();
                 out.println("Hello, world!");
                 out.close();
           }
           catch(IOException ex){}  

            return null;
            //return new ModelAndView("address");
     }
 }

---

尝试以下更改

在XML中，添加注释驱动元素：

<context:component-scan base-package="com.application.myGoogleAppEngine.controller" />
<mvc:annotation-driven />

<bean
    class="org.springframework.web.servlet.view.InternalResourceViewResolver">
    <property name="viewClass"
        value="org.springframework.web.servlet.view.JstlView" />
    <property name="prefix" value="/pages/" />
    <property name="suffix" value=".jsp" />
</bean>

package com.application.myGoogleAppEngine.controller;

import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.http.HttpServletResponse;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.servlet.ModelAndView;

@Controller
@RequestMapping("/map.jsp")
public class MapController {

    @RequestMapping(method=RequestMethod.GET)
public ModelAndView initForm(HttpServletResponse res){

           try{       
                 PrintWriter out = res.getWriter();
                 out.println("Hello, world!");
                 out.close();
           }
           catch(IOException ex){}  

            return null;
            //return new ModelAndView("address");
     }
 }

<context:component-scan base-package="com.application.myGoogleAppEngine.controller" />
<mvc:annotation-driven />

<bean
    class="org.springframework.web.servlet.view.InternalResourceViewResolver">
    <property name="viewClass"
        value="org.springframework.web.servlet.view.JstlView" />
    <property name="prefix" value="/pages/" />
    <property name="suffix" value=".jsp" />
</bean>

<servlet>
    <servlet-name>spring</servlet-name>
    <servlet-class>
        org.springframework.web.servlet.DispatcherServlet
    </servlet-class>
    <load-on-startup>1</load-on-startup>
</servlet>

<servlet-mapping>
    <servlet-name>spring</servlet-name>
    <url-pattern>/</url-pattern>
</servlet-mapping>

@Controller
@RequestMapping("/map")
public class MapController {
    ...
}