- 矩阵变量的语法：映射+路径+矩阵变量，多个变量用分号隔开
- 开启矩阵变量方式1
@Configuration(proxyBeanMethods = false)
public class WebConfig implements WebMvcConfigurer {
@Override
public void configurePathMatch(PathMatchConfigurer configurer) {
UrlPathHelper urlPathHelper = new UrlPathHelper();
// 不移除；后面的内容。矩阵变量功能就可以生效
urlPathHelper.setRemoveSemicolonContent(false);
configurer.setUrlPathHelper(urlPathHelper);
}
}
- 方式2
@Configuration(proxyBeanMethods = false)
public class WebConfig {
@Bean
public WebMvcConfigurer webMvcConfigurer(){
return new WebMvcConfigurer() {
@Override
public void configurePathMatch(PathMatchConfigurer configurer) {
UrlPathHelper urlPathHelper = new UrlPathHelper();
// 不移除；后面的内容。矩阵变量功能就可以生效
urlPathHelper.setRemoveSemicolonContent(false);
configurer.setUrlPathHelper(urlPathHelper);
}
};
}
}
- 测试
<a href="/cars/sell;low=34;brand=byd,audi,yd">@MatrixVariable（矩阵变量）</a>
<a href="/cars/sell;low=34;brand=byd;brand=audi;brand=yd">@MatrixVariable（矩阵变量）</a>
//1、语法： 请求路径：/cars/sell;low=34;brand=byd,audi,yd
//2、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进行解析。
// removeSemicolonContent（移除分号内容）支持矩阵变量的
//3、矩阵变量必须有url路径变量才能被解析
@GetMapping("/cars/{path}")
public Map carsSell(@MatrixVariable("low") Integer low,
@MatrixVariable("brand") List<String> brand,
@PathVariable("path") String path){
Map<String,Object> map = new HashMap<>();
map.put("low",low);
map.put("brand",brand);
map.put("path",path);
return map;
}
<a href="/boss/1;age=20/2;age=10">@MatrixVariable（矩阵变量）/boss/{bossId}/{empId}</a>
// /boss/1;age=20/2;age=10
@GetMapping("/boss/{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;
}