Spring MVC的@PathVariable注解和@MatrixVariable注解的使用

你的名字 2021-07-25 02:43 463阅读 0赞

**一 视图**

<%@ page language="java" contentType="text/html; charset=UTF-8"
        pageEncoding="UTF-8"%>
    <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"  "http://www.w3.org/TR/html4/loose.dtd">
    <html>
    <head>
    <meta http-equiv="Content-Type" content="text/html;  charset=UTF-8">
    <title>处理请求URL注解测试</title>
    </head>
    <body>
    <h2>处理请求URL注解测试</h2>
    <a href="pathVariableTest/1">测试@PathVariable注解</a>
    
    <a href="matrixVariableTest/1;name=jack;age=23">测试@MatrixVariable注解</a>
    
    <a  href="productTest/computer;brand=apple,acer;low=2000;height=10000">商品条件查询（品牌，价格区间）</a>
    
    <a href="http://localhost:8080/CrossOriginTest/welcome">测试@CrossOrigin注解</a>
    
    </body>
    </html>

**二 控制器**

package org.fkit.controller;
    
    import java.util.List;
    import org.springframework.stereotype.Controller;
    import org.springframework.web.bind.annotation.GetMapping;
    import org.springframework.web.bind.annotation.MatrixVariable;
    import org.springframework.web.bind.annotation.PathVariable;
    
    @Controller
    public class VariableController{
    
        // 测试@PathVariable注解
        // 该方法映射的请求为/VariableTest/pathVariableTest/1
        @GetMapping(value="/pathVariableTest/{userId}")
         public void pathVariableTest(
                 @PathVariable Integer userId) {
            System.out.println("通过@PathVariable获得数据： userId=" + userId);
         }
        
        // 测试@MatrixVariable注解
        // 该方法映射的请求为/VariableTest/matrixVariableTest/1;name=jack;age=23
        @GetMapping(value="/matrixVariableTest/{userId}")
        public void matrixVariableTest(
                @PathVariable Integer userId,
                @MatrixVariable(value="name",pathVar="userId") String name,
                @MatrixVariable(value="age",pathVar="userId") Integer age){
            System.out.println("通过@PathVariable获得数据： userId=" + userId);
            System.out.println("通过@MatrixVariable获得数据： name="  + name + " age="+ age);
        }
        
        // 测试@MatrixVariable注解的复杂例子
        // 该方法映射的请求为//VariableTest/productTest/computer;brand=apple,acer;low=2000;height=10000
        @GetMapping(value="/productTest/{goods}")
        public void productTest(
                @PathVariable String goods,
                @MatrixVariable(value="brand",pathVar="goods") List<String> brand,
                @MatrixVariable(value="low",pathVar="goods") Integer low,
                @MatrixVariable(value="height",pathVar="goods") Integer height){
            System.out.println("通过@PathVariable获得数据： goods=" + goods);
            System.out.println("通过@MatrixVariable获得数据：brand="  + brand);
            System.out.println("通过@MatrixVariable获得数据： low="  + low + " height="+ height);
        }
    
    }

**三 配置文件**

<?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:mvc="http://www.springframework.org/schema/mvc"
         xmlns:context="http://www.springframework.org/schema/context"
        xsi:schemaLocation="
            http://www.springframework.org/schema/beans
             http://www.springframework.org/schema/beans/spring-beans.xsd
            http://www.springframework.org/schema/mvc
            http://www.springframework.org/schema/mvc/spring-mvc.xsd     
            http://www.springframework.org/schema/context
             http://www.springframework.org/schema/context/spring-context.xsd">
            
        
        <context:component-scan base-package="org.fkit.controller"/>
         
        <mvc:annotation-driven enable-matrix-variables="true"/>
         
        <mvc:default-servlet-handler/>
        
        
         <bean id="viewResolver"
               class="org.springframework.web.servlet.view.InternalResourceViewResolver"
              p:prefix="/WEB-INF/content/" p:suffix=".jsp"/>
        
    </beans>

**四 运行**

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5ncWl1bWluZw_size_16_color_FFFFFF_t_70][]

分别点击各个链接

通过@PathVariable获得数据： userId=1
    通过@PathVariable获得数据： userId=1
    通过@MatrixVariable获得数据： name=jack age=23
    通过@PathVariable获得数据： goods=computer
    通过@MatrixVariable获得数据：brand=[apple, acer]
    通过@MatrixVariable获得数据： low=2000 height=10000

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5ncWl1bWluZw_size_16_color_FFFFFF_t_70]: /images/20210724/e1166ff1a37f4c55b68c09b4b27fff06.png