SpringMvc对Rest风格的支持及获取PathVariable变量

约定不等于承诺〃 2022-03-15 03:26 268阅读 0赞

[SpringMvc第二讲][SpringMvc]

工程目录：

![20190228172937102.png][]

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_2_5.xsd" id="WebApp_ID" version="2.5">
      <display-name>SpringMvc-01</display-name>
      <welcome-file-list>
        <welcome-file>index.jsp</welcome-file>
      </welcome-file-list>
      
      <servlet>
    		<servlet-name>springmvc</servlet-name>
    		<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    		<init-param>
    			<param-name>contextConfigLocation</param-name>
    			<param-value>classpath:spring-mvc.xml</param-value>
    		</init-param>
    	</servlet>
    	<servlet-mapping>
    		<servlet-name>springmvc</servlet-name>
    		<url-pattern>/</url-pattern>
    	</servlet-mapping>
    </web-app>

spring-mvc.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"
        xsi:schemaLocation="
            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.xsd">
    
    	
        <context:component-scan base-package="com.java1234"/>
    
        
    	<bean id="viewResolver"
    		class="org.springframework.web.servlet.view.InternalResourceViewResolver">
    		<property name="prefix" value="/WEB-INF/jsp/" />
    		<property name="suffix" value=".jsp"></property>
    	</bean>
    
    </beans>

Article.java

package com.java1234.model;
    
    public class Article {
    
    	
    	private int id;
    	private String title;
    	private String content;
    	public String getTitle() {
    		return title;
    	}
    	public void setTitle(String title) {
    		this.title = title;
    	}
    	public String getContent() {
    		return content;
    	}
    	public void setContent(String content) {
    		this.content = content;
    	}
    	public Article() {
    		super();
    		// TODO Auto-generated constructor stub
    	}
    	public Article(String title, String content) {
    		super();
    		this.title = title;
    		this.content = content;
    	}
    	
    	
    }

ArticleController.java

package com.java1234.controller;
    
    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.servlet.ModelAndView;
    
    import com.java1234.model.Article;
    
    @Controller
    @RequestMapping("/article")
    public class ArticleController {
    
    	@RequestMapping("/list")
    	public String list(Model model) {
    		return "article/list";
    	}
    	
    	@RequestMapping("/details/{id}")
    	public  ModelAndView details(@PathVariable("id") int id) {
    		ModelAndView mav=new ModelAndView();
    		if(id==1) {
    			mav.addObject("article",new Article("文章一","文章一的内容"));
    		}else if(id==2) {
    			mav.addObject("article",new Article("文章二","文章二的内容"));
    		}
    		
    		 mav.setViewName("article/details");
    		 return mav;
    		
    	}
    }

![20190228173703536.png][]

list.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
        pageEncoding="UTF-8"%>
    <!DOCTYPE html>
    <html>
    <head>
    <meta charset="UTF-8">
    <title>Insert title here</title>
    </head>
    <body>
    <table>
    <tr>
    <td>文章列表</td><td>内容</td>
    </tr>
    <tr>
    <td>1</td>
    <td><a href="${pageContext.request.contextPath}/article/details/1" target="_blank">文章一</a></td>
    </tr>
    
    <tr>
    <td>2</td>
    <td><a href="${pageContext.request.contextPath}/article/details/2" target="_blank">文章二</a></td>
    </tr>
    </table>
    </body>
    </html>

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lvbmdidXRpbmd4aWRl_size_16_color_FFFFFF_t_70][]

details.jsp

运行：

![20190228173818952.png][]

![20190228173828475.png][]

![20190228174035525.png][]

[SpringMvc]: https://mp.csdn.net/postedit/88027461
[20190228172937102.png]: /images/20220315/dfba80c2af2244189fa435e9698b0442.png
[20190228173703536.png]: /images/20220315/313bb727de9a43fd8f45301fbd95bcef.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lvbmdidXRpbmd4aWRl_size_16_color_FFFFFF_t_70]: /images/20220315/ff93fdbf8cdf4874b4dbcd8c178d6b03.png
[20190228173818952.png]: /images/20220315/0672f383c6914cf6a2517ae0761451bc.png
[20190228173828475.png]: /images/20220315/859b2cdbd3ee408ea04ef2809cd9b5ea.png
[20190228174035525.png]: /images/20220315/a3a061c4774c4c83903d2e4c4511c57f.png