语法： 请求路径：/person/info;name=lisi;hobbies=basketball,football,tennis不同变量用分号相隔, 一个变量有多个值则使用逗号隔开
SpringBoot默认是禁用了矩阵变量的功能
手动开启原理: 对于路径的处理, UrlPathHelper的removeSemicolonContent设置为false，让其支持矩阵变量的。
矩阵变量必须有url路径变量才能被解析, 也就是/person/{path}里的path(这里我把它的值写成info, 即/person/info)
第一种方法，实现接口WebMvcConfigurer，覆盖方法configurePathMatch。
WebConfig
package com.limi.springboottest2.config;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.PathMatchConfigurer;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
import org.springframework.web.util.UrlPathHelper;
@Configuration
public class WebConfig implements WebMvcConfigurer {
public void configurePathMatch(PathMatchConfigurer configurer) {
UrlPathHelper urlPathHelper = new UrlPathHelper();
// 设置不移除分号 ；后面的内容。矩阵变量功能就可以生效
urlPathHelper.setRemoveSemicolonContent(false);
configurer.setUrlPathHelper(urlPathHelper);
}
}第二种，自定义WebMvcConfigurer类型组件并添加到容器中。
WebConfig
package com.limi.springboottest2.config;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.PathMatchConfigurer;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
import org.springframework.web.util.UrlPathHelper;
@Configuration
public class WebConfig implements WebMvcConfigurer {
@Bean
public WebMvcConfigurer webMvcConfigurer(){
return new WebMvcConfigurer() {
@Override
public void configurePathMatch(PathMatchConfigurer configurer) {
UrlPathHelper urlPathHelper = new UrlPathHelper();
// 设置不移除分号 ；后面的内容。矩阵变量功能就可以生效
urlPathHelper.setRemoveSemicolonContent(false);
configurer.setUrlPathHelper(urlPathHelper);
}
};
}
}index.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
<h1>欢迎你好呀!</h1>
<a href="/person/info;name=lsi;hobbies=basketball,football,tennis" rel="external nofollow" >1测试@MatrixVariable</a>
<br>
<a href="/person/1;age=50/2;age=30" rel="external nofollow" >2测试@MatrixVariable</a>
</body>
</html>HelloController
package com.limi.springboottest2.controller;
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;
import org.springframework.web.bind.annotation.ResponseBody;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
@Controller
public class HelloController {
// /person/info;name=lsi;hobbies=basketball,football,tennis
@ResponseBody
@GetMapping("/person/{path}")
public Map<String,Object> get(@PathVariable("path") String path,
@MatrixVariable("name") String name,
@MatrixVariable("hobbies") List<String> hobbies){
Map<String,Object> map = new HashMap<>();
map.put("path",path);
map.put("name",name);
map.put("hobbies",hobbies);
return map;
}
// 测试传入两组相同的类型的变量, 例如老板和员工的年龄
// /person/1;age=50/2;age=30
@ResponseBody
@GetMapping("/person/{bossId}/{empId}")
public Map boss(@MatrixVariable(value = "age",pathVar = "bossId") Integer bossAge,
@MatrixVariable(value = "age",pathVar = "empId") Integer empAge){
Map<String,Object> map = new HashMap<>();
map.put("bossAge",bossAge);
map.put("empAge",empAge);
return map;
}
}测试1
测试2
