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
1 <?xml version="1.0" encoding="UTF-8"?> 2 <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"> 3 <display-name>springmvc7</display-name> 4 <welcome-file-list> 5 <welcome-file>index.jsp</welcome-file> 6 </welcome-file-list> 7 <servlet> 8 <servlet-name>mvc-dispatcher</servlet-name> 9 <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> 10 <!-- DispatcherServlet对应的上下文配置,默认/WEB-INF/$servlet-name$-servlet.xml 11 下面配置spring-mvc的核心配置文件 12 --> 13 <init-param> 14 <param-name>contextConfigLocation</param-name> 15 <param-value>/WEB-INF/configs/spring/mvc-dispatcher-servlet.xml</param-value> 16 </init-param> 17 <load-on-startup>1</load-on-startup> 18 </servlet> 19 <servlet-mapping> 20 <servlet-name>mvc-dispatcher</servlet-name> 21 <!-- mvc-dispatcher 拦截所有的请求 --> 22 <url-pattern>/</url-pattern> 23 </servlet-mapping> 24 25 26 </web-app>
3.mvc-dispatcher-servlet.xml
1 <?xml version="1.0" encoding="UTF-8"?> 2 <beans xmlns="http://www.springframework.org/schema/beans" 3 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 4 xmlns:p="http://www.springframework.org/schema/p" 5 xmlns:context="http://www.springframework.org/schema/context" 6 xmlns:mvc="http://www.springframework.org/schema/mvc" 7 xmlns:tx="http://www.springframework.org/schema/tx" 8 xmlns:aop="http://www.springframework.org/schema/aop" 9 xsi:schemaLocation=" 10 http://www.springframework.org/schema/beans 11 http://www.springframework.org/schema/beans/spring-beans.xsd 12 http://www.springframework.org/schema/context 13 http://www.springframework.org/schema/context/spring-context.xsd 14 http://www.springframework.org/schema/mvc 15 http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd 16 http://www.springframework.org/schema/tx 17 http://www.springframework.org/schema/tx/spring-tx.xsd 18 http://www.springframework.org/schema/aop 19 http://www.springframework.org/schema/aop/spring-aop.xsd"> 20 21 <!-- 激活 22 @Required 23 @Autowired,jsr250's 24 @PostConstruct, 25 @PreDestroy and @ Resource等标注 26 --> 27 <context:annotation-config /> 28 <!-- 29 DispatcherServlet上下文,只搜索@Controller标注的类,不搜索其他标注的类 30 --> 31 <context:component-scan base-package="com.gys.mvcdemo"> 32 <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/> 33 </context:component-scan> 34 35 <!-- 36 37 HandlerMapping无需配置,Spring MVC可以默认启动 38 --> 39 <!-- 40 扩充了注解驱动,可以将请求参数绑定到控制器参数 41 启用基于annotation的handlerMapping. 42 --> 43 <mvc:annotation-driven /> 44 45 <!-- 46 静态资源处理,css,js,imgs 47 --> 48 <mvc:resources location="/resources/" mapping="/resources/**"/> 49 50 51 <!-- 视图解析器 --> 52 <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> 53 <property name="viewClass" value="org.springframework.web.servlet.view.JstlView" /> 54 <property name="prefix" value="/WEB-INF/jsps/" /> 55 <property name="suffix" value=".jsp" /> 56 </bean> 57 58 59 </beans>
Course.java
1 package com.gys.mvcdemo.model; 2 3 public class Course { 4 //课程IDd 5 private Integer courseId; 6 //课程名称 7 private String title; 8 //图片路径 9 private String imgPath; 10 //学习人数 11 private Integer learningNum; 12 //课程时长 13 private Long duration; 14 //课程难度 15 private Integer level; 16 //课程描述 17 private String levelDesc; 18 //课程介绍 19 private String descr; 20 public Integer getCourseId() { 21 return courseId; 22 } 23 public void setCourseId(Integer courseId) { 24 this.courseId = courseId; 25 } 26 public String getTitle() { 27 return title; 28 } 29 public void setTitle(String title) { 30 this.title = title; 31 } 32 public String getImgPath() { 33 return imgPath; 34 } 35 public void setImgPath(String imgPath) { 36 this.imgPath = imgPath; 37 } 38 public Integer getLearningNum() { 39 return learningNum; 40 } 41 public void setLearningNum(Integer learningNum) { 42 this.learningNum = learningNum; 43 } 44 public Long getDuration() { 45 return duration; 46 } 47 public void setDuration(Long duration) { 48 this.duration = duration; 49 } 50 public Integer getLevel() { 51 return level; 52 } 53 public void setLevel(Integer level) { 54 this.level = level; 55 } 56 public String getLevelDesc() { 57 return levelDesc; 58 } 59 public void setLevelDesc(String levelDesc) { 60 this.levelDesc = levelDesc; 61 } 62 public String getDescr() { 63 return descr; 64 } 65 public void setDescr(String descr) { 66 this.descr = descr; 67 } 68 69 70 71 72 }
CourseService.java
1 package com.gys.mvcdemo.service; 2 3 import com.gys.mvcdemo.model.Course; 4 5 public interface CourseService { 6 Course getCoursebyId(Integer courseId); 7 }
CourseServiceImpl.java
1 package com.gys.mvcdemo.service.impl; 2 3 import org.springframework.stereotype.Service; 4 5 import com.gys.mvcdemo.model.Course; 6 import com.gys.mvcdemo.service.CourseService; 7 8 @Service("courseService") 9 public class CourseServiceImpl implements CourseService{ 10 11 @Override 12 public Course getCoursebyId(Integer courseId) { 13 Course course=new Course(); 14 course.setCourseId(courseId); 15 course.setTitle("深入浅出Java多线程"); 16 course.setImgPath("1.jpg"); 17 course.setLearningNum(123465); 18 course.setLevel(2); 19 course.setLevelDesc("中级"); 20 course.setDuration(7200L); 21 course.setDescr("多线程是日常开发中的常用知识..........."); 22 return course; 23 } 24 }
CourseController.java
1 package com.gys.mvcdemo.controller; 2 3 import java.util.Map; 4 5 import javax.servlet.http.HttpServletRequest; 6 import javax.servlet.http.HttpServletResponse; 7 8 import org.springframework.beans.factory.annotation.Autowired; 9 import org.springframework.stereotype.Controller; 10 import org.springframework.ui.Model; 11 import org.springframework.web.bind.annotation.PathVariable; 12 import org.springframework.web.bind.annotation.RequestMapping; 13 import org.springframework.web.bind.annotation.RequestMethod; 14 import org.springframework.web.bind.annotation.RequestParam; 15 16 import com.gys.mvcdemo.model.Course; 17 import com.gys.mvcdemo.service.CourseService; 18 19 @Controller 20 @RequestMapping("/courses") 21 public class CourseController { 22 23 private CourseService courseService; 24 25 @Autowired 26 public void setCourseService(CourseService courseService) { 27 this.courseService = courseService; 28 } 29 30 // /courses/vies?courseId=123 31 @RequestMapping(value="/view",method=RequestMethod.GET) 32 public String viewCourse(Model model,@RequestParam("courseId") Integer courseId){ 33 Course course=courseService.getCoursebyId(courseId); 34 model.addAttribute(course); 35 return "course_overview"; 36 } 37 // courses/view2/{courseId} 38 @RequestMapping(value="/view2/{courseId}",method=RequestMethod.GET) 39 public String viewCourse2(@PathVariable("courseId") Integer courseId,Map<String, Object> model){ 40 Course course=courseService.getCoursebyId(courseId); 41 model.put("course",course); 42 return "course_overview"; 43 } 44 45 // courses/view3?courseId=3 46 @RequestMapping("view3") 47 public String viewCourse3(HttpServletRequest request,HttpServletResponse response){ 48 Integer courseId=Integer.valueOf(request.getParameter("courseId")); 49 Course course=courseService.getCoursebyId(courseId); 50 request.setAttribute("course", course); 51 return "course_overview"; 52 } 53 54 55 56 }
course_overview.jsp
1 <%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> 2 <% 3 String path = request.getContextPath(); 4 String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/"; 5 %> 6 7 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> 8 <html> 9 <head> 10 <base href="<%=basePath%>"> 11 12 <title>My JSP 'course_overview.jsp' starting page</title> 13 <link rel="stylesheet" type="text/css" href="<%=request.getContextPath()%>/resources/css/main.css"> 14 </head> 15 16 <body> 17 <h2>id:${course.courseId }</h2> 18 <h2>title:${course.title }</h2> 19 <h2>imgPath:<img src="<%=path %>/resources/img/${course.imgPath }" /></h2> 20 <h2>learningNum:${course.learningNum }</h2> 21 <h2>duration:${course.duration }</h2> 22 <h2>level:${course.level }</h2> 23 <h2>levelDesc:${course.levelDesc }</h2> 24 <h2>descr:${course.descr }</h2> 25 </body> 26 </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