springmvc的3中路径风格

1.导入相应的jar包,文件放置情况

2.web.xml

 <?xml version="1.0" encoding="UTF-8"?>

 <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0">

   <display-name>springmvc7</display-name>

   <welcome-file-list>

     <welcome-file>index.jsp</welcome-file>

   </welcome-file-list>

   <servlet>

       <servlet-name>mvc-dispatcher</servlet-name>

       <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>

       <!-- DispatcherServlet对应的上下文配置,默认/WEB-INF/$servlet-name$-servlet.xml

           下面配置spring-mvc的核心配置文件

        -->

        <init-param>

            <param-name>contextConfigLocation</param-name>

            <param-value>/WEB-INF/configs/spring/mvc-dispatcher-servlet.xml</param-value>

        </init-param>

       <load-on-startup>1</load-on-startup>

   </servlet>

   <servlet-mapping>

       <servlet-name>mvc-dispatcher</servlet-name>

       <!-- mvc-dispatcher 拦截所有的请求 -->

       <url-pattern>/</url-pattern>

   </servlet-mapping>

 </web-app>

3.mvc-dispatcher-servlet.xml

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

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

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

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

     xsi:schemaLocation="

         http://www.springframework.org/schema/beans

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

         http://www.springframework.org/schema/context

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

         http://www.springframework.org/schema/mvc

         http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd

         http://www.springframework.org/schema/tx

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

         http://www.springframework.org/schema/aop

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

 <!-- 激活

      @Required

      @Autowired,jsr250's

      @PostConstruct,

      @PreDestroy and @ Resource等标注

  -->

 <context:annotation-config />

 <!--

     DispatcherServlet上下文,只搜索@Controller标注的类,不搜索其他标注的类

  -->

 <context:component-scan base-package="com.gys.mvcdemo">

     <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/>

 </context:component-scan>

 <!-- 

     HandlerMapping无需配置,Spring MVC可以默认启动

  -->

  <!--

      扩充了注解驱动,可以将请求参数绑定到控制器参数

     启用基于annotation的handlerMapping.

   -->

 <mvc:annotation-driven />

 <!--

     静态资源处理,css,js,imgs

  -->

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

 <!-- 视图解析器 -->

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

     <property name="viewClass" value="org.springframework.web.servlet.view.JstlView" />

     <property name="prefix" value="/WEB-INF/jsps/" />

     <property name="suffix" value=".jsp" />

 </bean>

 </beans>

Course.java

 package com.gys.mvcdemo.model;

 public class Course {

     //课程IDd

     private Integer courseId;

     //课程名称

     private String title;

 //图片路径

     private String imgPath;

     //学习人数

     private Integer learningNum;

     //课程时长

     private Long duration;

     //课程难度

     private Integer level;

     //课程描述

     private String levelDesc;

     //课程介绍

     private String descr;

     public Integer getCourseId() {

         return courseId;

     }

     public void setCourseId(Integer courseId) {

         this.courseId = courseId;

     }

     public String getTitle() {

         return title;

     }

     public void setTitle(String title) {

         this.title = title;

     }

     public String getImgPath() {

         return imgPath;

     }

     public void setImgPath(String imgPath) {

         this.imgPath = imgPath;

     }

     public Integer getLearningNum() {

         return learningNum;

     }

     public void setLearningNum(Integer learningNum) {

         this.learningNum = learningNum;

     }

     public Long getDuration() {

         return duration;

     }

     public void setDuration(Long duration) {

         this.duration = duration;

     }

     public Integer getLevel() {

         return level;

     }

     public void setLevel(Integer level) {

         this.level = level;

     }

     public String getLevelDesc() {

         return levelDesc;

     }

     public void setLevelDesc(String levelDesc) {

         this.levelDesc = levelDesc;

     }

     public String getDescr() {

         return descr;

     }

     public void setDescr(String descr) {

         this.descr = descr;

     }

 }

CourseService.java

 package com.gys.mvcdemo.service;

 import com.gys.mvcdemo.model.Course;

 public interface CourseService {

     Course getCoursebyId(Integer courseId);

 }

CourseServiceImpl.java

 package com.gys.mvcdemo.service.impl;

 import org.springframework.stereotype.Service;

 import com.gys.mvcdemo.model.Course;

 import com.gys.mvcdemo.service.CourseService;

 @Service("courseService")

 public class CourseServiceImpl implements CourseService{

     @Override

     public Course getCoursebyId(Integer courseId) {

         Course course=new Course();

         course.setCourseId(courseId);

         course.setTitle("深入浅出Java多线程");

         course.setImgPath("1.jpg");

         course.setLearningNum(123465);

         course.setLevel(2);

         course.setLevelDesc("中级");

         course.setDuration(7200L);

         course.setDescr("多线程是日常开发中的常用知识...........");

         return course;

     }

 }

CourseController.java

 package com.gys.mvcdemo.controller;

 import java.util.Map;

 import javax.servlet.http.HttpServletRequest;

 import javax.servlet.http.HttpServletResponse;

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

 import org.springframework.stereotype.Controller;

 import org.springframework.ui.Model;

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

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

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

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

 import com.gys.mvcdemo.model.Course;

 import com.gys.mvcdemo.service.CourseService;

 @Controller

 @RequestMapping("/courses")

 public class CourseController {

     private CourseService courseService;

     @Autowired

     public void setCourseService(CourseService courseService) {

         this.courseService = courseService;

     }

     // /courses/vies?courseId=123

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

     public String viewCourse(Model model,@RequestParam("courseId") Integer courseId){

         Course course=courseService.getCoursebyId(courseId);

         model.addAttribute(course);

         return "course_overview";

     }

     // courses/view2/{courseId}

     @RequestMapping(value="/view2/{courseId}",method=RequestMethod.GET)

     public String viewCourse2(@PathVariable("courseId") Integer courseId,Map<String, Object> model){

         Course course=courseService.getCoursebyId(courseId);

         model.put("course",course);

         return "course_overview";

     }

     // courses/view3?courseId=3

     @RequestMapping("view3")

     public String viewCourse3(HttpServletRequest request,HttpServletResponse response){

         Integer courseId=Integer.valueOf(request.getParameter("courseId"));

         Course course=courseService.getCoursebyId(courseId);

         request.setAttribute("course", course);

         return "course_overview";

     }

 }

course_overview.jsp

 <%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>

 <%

 String path = request.getContextPath();

 String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";

 %>

 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

 <html>

   <head>

     <base href="<%=basePath%>">

     <title>My JSP 'course_overview.jsp' starting page</title>

     <link rel="stylesheet" type="text/css" href="<%=request.getContextPath()%>/resources/css/main.css">

   </head>

   <body>

     <h2>id:${course.courseId }</h2>

     <h2>title:${course.title }</h2>

     <h2>imgPath:<img src="<%=path %>/resources/img/${course.imgPath }" /></h2>

     <h2>learningNum:${course.learningNum }</h2>

     <h2>duration:${course.duration }</h2>

     <h2>level:${course.level }</h2>

     <h2>levelDesc:${course.levelDesc }</h2>

      <h2>descr:${course.descr }</h2>

   </body>

 </html>

用三种路径测试:

http://localhost:8080/springmvc7/courses/view?courseId=1

http://localhost:8080/springmvc7/courses/view2/2

http://localhost:8080/springmvc7/courses/view3?courseId=3

巴特西

springmvc的3中路径风格

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