springmvc框架的問題，回傳的string字符段映射不到相應的jsp頁面

<?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:p="http://www.springframework.org/schema/p"

       xmlns:tx="http://www.springframework.org/schema/tx" xmlns:mvc="http://www.springframework.org/schema/mvc"

       xmlns:context="http://www.springframework.org/schema/context"

       xmlns:aop="http://www.springframework.org/schema/aop"

       xsi:schemaLocation="http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.1.xsd

      http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.1.xsd

      http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.1.xsd

      http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd

      http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd">



    <!--開啟注解驅動，以使得訪問路徑與方法的匹配可以通過注解配置-->

    <mvc:annotation-driven/>



    <context:component-scan base-package="com.redrain.medicine.controller"></context:component-scan>

    <!--配置資源視圖決議器-->

    <bean id="InternalResourceViewResolver"

          class="org.springframework.web.servlet.view.InternalResourceViewResolver">

        <property name="prefix" value="https://bbs.csdn.net/WEB-INF/jsp/"></property>

        <property name="suffix" value="https://bbs.csdn.net/topics/.jsp"></property>

    </bean>



    <!--多檔案上傳決議器配置-->

    <bean id="multipartResolver"

          class="org.springframework.web.multipart.commons.CommonsMultipartResolver">

        <!--最大上傳限制-->

        <property name="maxUploadSize" value="https://bbs.csdn.net/topics/10485760"/>

    </bean>



    <!--通過location，可以重新定義資源檔案的位置-->

    <mvc:resources location="/resources/" mapping="/resources/**"/>

    <mvc:resources location="/upload/" mapping="/upload/**"/>

    <mvc:resources location="/WEB-INF/" mapping="/WEB-INF/**"/>

    <!--定義該訪問路徑下跳轉的頁面-->

    <!-- <mvc:view-controller path="/" view-name="login"/>*************** -->



    <!--    &lt;!&ndash;定義攔截器&ndash;&gt;-->

    <!--    <mvc:interceptors>-->

    <!--        &lt;!&ndash; 對特定的請求進行攔截 &ndash;&gt;-->

    <!--        <mvc:interceptor>-->

    <!--            <mvc:mapping path="/goods/detail"/>-->

    <!--            <mvc:mapping path="/cart/*"/>-->

    <!--            <bean id="UserLoginInterceptor" class="com.phonemarket.interceptor.UserLoginInterceptor"></bean>-->

    <!--        </mvc:interceptor>-->

    <!--    </mvc:interceptors>-->

</beans>

package com.redrain.medicine.controller;



import com.redrain.medicine.entity.SysUser;

import com.redrain.medicine.service.SysUserService;

import com.redrain.medicine.util.ReturnData;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.stereotype.Controller;

import org.springframework.web.bind.annotation.RequestMapping;

import org.springframework.web.bind.annotation.ResponseBody;

import org.springframework.web.servlet.ModelAndView;



import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpSession;



/**

 * @Author 李【[email protected]】

 */

@Controller

public class LoginController {

	@Autowired

	private SysUserService sysUserService;

	/*

	 * @RequestMapping("/") public String rootUrl() { return "redirect:login"; }

	 */

	

	@RequestMapping("/index")

	public ModelAndView index(ModelAndView modelAndView, HttpServletRequest request) {

		HttpSession session = request.getSession();

		Object o = session.getAttribute("userInfo");

		if (o == null) {

			modelAndView.setViewName("regist");

		} else {

			String name = ((SysUser) o).getName();

			modelAndView.addObject("name", name);

			modelAndView.setViewName("index");

		}

		return modelAndView;

	}

	@RequestMapping( "/toRegister")

	public String toRegister() {

		System.out.println("*****************");

		

		return "register/regist1";

		

	}



	@RequestMapping("/login")

	public String login(HttpServletRequest request) {

		Object o = request.getSession().getAttribute("userInfo");

		if (o != null) {

			return "redirect:index";

		}

		return "login";

	}



	@RequestMapping("/logout")

	public String logout(HttpServletRequest request) {

		request.getSession().setAttribute("userInfo", null);

		return "forward:login";

	}



	@RequestMapping("/requestLogin")

	@ResponseBody

	public ReturnData requestLogin(HttpServletRequest request, SysUser loginSysUser) {

		return sysUserService.login(loginSysUser, request);

	}

}

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