springMVC 浏览器直接显示jsp源码。求解？解决思路

package com.controller;


import org.apache.log4j.Logger;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.validation.BindingResult;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.servlet.ModelAndView;
import com.pojo.User;
import com.service.IUserService;
import com.validator.UserValidator;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

@Controller
@RequestMapping(value = "/user")
public class UserController {
	@Autowired
	private IUserService userService;
	@Autowired
	private UserValidator userValidator;

	@RequestMapping(value = "/getUser/id/{userID}")
	public ModelAndView getUser(@PathVariable int userID) throws Exception {
		ModelAndView model=new ModelAndView("hello");
		model.addObject("hello_1", userService.getUserByID(userID));
		Logger logger = Logger.getLogger(UserController.class);
		logger.info("test");
		return model;
	}
	
	@RequestMapping(value="/listPageUser")
	public ModelAndView listPageUser(User user){
		ModelAndView model=new ModelAndView("hello_s");
		model.addObject("hello_s", userService.listPageUser(user));
		return model;
	}

	@RequestMapping(value = "/getStr")
	@ResponseBody
	public String getStr(HttpServletRequest request,
			HttpServletResponse response) throws Exception {
		return "hello!";
	}
	
	@RequestMapping(value = "/getJSP")
	public String getJSP(HttpServletRequest request,
			HttpServletResponse response) throws Exception {
		request.setAttribute("hello_1", userService.getUserByID(1));
		return "hello";
	}
	@RequestMapping(value="/delete/id/{id}")
	@ResponseBody
	public String deleteUser(@PathVariable int id){
		userService.deleteUserByID(id);
		return "Success!";
	}
	@RequestMapping(value="/saveUser")
	@ResponseBody
	public String saveUser(User user,BindingResult result){
		userValidator.validate(user,result);
		if(result.hasErrors()){
			return "fail!";
		}
		int userID=userService.saveUser(user);
		return "userID="+userID;
	}
	@RequestMapping(value="/throwException")
	public String throwException(){
		int bbb=Integer.valueOf(null);
		return "exception";
	}
}

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context"
	xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"
	xmlns:mvc="http://www.springframework.org/schema/mvc"
	xsi:schemaLocation="
            http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
            http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd
            http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd
            http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-2.5.xsd
            http://www.springframework.org/schema/mvc  
    http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd">
	<!-- 连接池配置 -->
	<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource">
		<property name="driverClassName" value="com.mysql.jdbc.Driver"></property>
		<property name="url"
			value="jdbc:mysql://localhost:3306/myBatis?useUnicode=true&amp;characterEncoding=UTF-8&amp;zeroDateTimeBehavior=convertToNull"></property>
		<property name="username" value="root"></property>
		<property name="password" value="root"></property>
		<property name="maxActive" value="100"></property>
		<property name="maxIdle" value="30"></property>
		<property name="maxWait" value="500"></property>
		<property name="defaultAutoCommit" value="true"></property>
	</bean>
	<!-- MyBatis的 sqlSessionFactory -->
	<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">