SpringBoot HTTP接口 GET请求

1. 普通传参

1@RequestMapping(path = "/{city_id}/{user_id}", method = RequestMethod.GET)
2public Object findUser(@PathVariable("city_id") String cityId,
3                       @PathVariable("user_id") String userId) {
4    params.clear();
5    params.put("cityId", cityId);
6    params.put("userId", userId);
7    return params;
8}

2. GetMapping注解

1@GetMapping(value = "/v1/page_user1")
2public Object pageUser(int from, int size) {
3    params.clear();
4    params.put("from", from);
5    params.put("size", size);
6    return params;
7}

3. 默认值，参数是否必须

1@GetMapping(value = "/v1/page_user2")
2public Object pageUserV2(@RequestParam(defaultValue = "0", name = "page", required = true) int from, int size) {
3    params.clear();
4    params.put("from", from);
5    params.put("size", size);
6    return params;
7}

4. bean对象传参

1@GetMapping("/v1/save_user")
2public Object saveUser(@RequestBody User user) {
3    params.clear();
4    params.put("user", user);
5    return params;
6}

• 注意：

  • 需要指定 http content-type 为 application/json
  • 使用body传输数据（针对postman而言）

5. 获取http头信息

1@GetMapping("/v1/get_header")
2public Object getHeader(@RequestHeader("access_token") String accessToken, String id) {
3    params.clear();
4    params.put("access_token", accessToken);
5    params.put("id", id);
6    return params;
7}

6. HttpServletRequest

1@GetMapping("/v1/test_request")
2public Object testRequest(HttpServletRequest request) {
3    params.clear();
4    String id = request.getParameter("id");
5    params.put("id", id);
6    return params;
7}