SpringBoot请求参数常用注解

@GetMapping("/car/{id}/owner/{username}")
public Map<String, Object> getCar(
        //路径变量
        @PathVariable("id") Integer id,
        @PathVariable("username") String username,
        @PathVariable Map<String, String> pv,
        //获取请求头
        @RequestHeader("User-Agent") String userAgent,
        @RequestHeader Map<String, String> headerMap,
        //获取请求参数
        @RequestParam("age") Integer age,
        @RequestParam("inters") List<String> inters,
        @RequestParam Map<String, String> paramMap,
        //获取cookie值
        @CookieValue("_ga") String _ga,
        @CookieValue("_ga") Cookie cookie) {
    HashMap<String, Object> map = new HashMap<>();
    map.put("id", id);
    map.put("username", username);
    map.put("pv", pv);
    map.put("userAgent", userAgent);
    map.put("headerMap", headerMap);
    map.put("age", age);
    map.put("inters", inters);
    map.put("paramMap", paramMap);
    map.put("_gz", _ga);
    map.put("cookie", cookie);
    return map;
}

@PostMapping("/save")
public Map postMethod(
        //获取请求体[POST]
        @RequestBody String content
) {
    System.out.println(content);
    HashMap<String, Object> map = new HashMap<>();
    map.put("content", content);
    return map;
}

@GetMapping("/goto")
public String goToPage(HttpServletRequest request) {
    request.setAttribute("msg", "成功了。。。");
    request.setAttribute("code", 200);
    return "forward:/success";
}
@ResponseBody
@GetMapping("/success")
public Map success(@RequestAttribute("msg") String msg,
                   @RequestAttribute("code") Integer code,
                   HttpServletRequest request
) {
    HashMap<String, Object> map = new HashMap<>();
    Object reqMethodMsg = request.getAttribute("msg");
    Object reqMethodCode = request.getAttribute("code");
    map.put("reqMethodMsg", reqMethodMsg);
    map.put("reqMethodCode", reqMethodCode);
    map.put("annotationMsg", msg);
    map.put("annotationCode", code);
    return map;
}

矩阵路径变量

@ResponseBody
@GetMapping("/cars/{bossId}/{empId}")
public Map carsSell(@MatrixVariable(value = "age",pathVar = "bossId") Integer bossAge,
                    @MatrixVariable(value = "age",pathVar = "empId") Integer empAge
                    ) {
    HashMap<String, Object> map = new HashMap<>();
    map.put("bossAge", bossAge);
    map.put("empAge", empAge);
    return map;
}

矩阵路径变量功能需手动开启

@Configuration(proxyBeanMethods = false)
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url分号后面的内容，矩阵变量功能就可以生效
//                urlPathHelper.setRemoveSemicolonContent(false);
//                configurer.setUrlPathHelper(urlPathHelper);
//            }
//        };
//    }

    @Override
    public void configurePathMatch(PathMatchConfigurer configurer) {
        UrlPathHelper urlPathHelper = new UrlPathHelper();
        //设置不移除url分号后面的内容，矩阵变量功能就可以生效
        urlPathHelper.setRemoveSemicolonContent(false);
        configurer.setUrlPathHelper(urlPathHelper);
    }
}