SpringBoot HTTP接口 GET请求

@RequestMapping(path = "/{city_id}/{user_id}", method = RequestMethod.GET)
public Object findUser(@PathVariable("city_id") String cityId,
                       @PathVariable("user_id") String userId) {
    params.clear();
    params.put("cityId", cityId);
    params.put("userId", userId);
    return params;
}

@GetMapping(value = "/v1/page_user1")
public Object pageUser(int from, int size) {
    params.clear();
    params.put("from", from);
    params.put("size", size);
    return params;
}

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

@GetMapping("/v1/save_user")
public Object saveUser(@RequestBody User user) {
    params.clear();
    params.put("user", user);
    return params;
}

@GetMapping("/v1/get_header")
public Object getHeader(@RequestHeader("access_token") String accessToken, String id) {
    params.clear();
    params.put("access_token", accessToken);
    params.put("id", id);
    return params;
}

@GetMapping("/v1/test_request")
public Object testRequest(HttpServletRequest request) {
    params.clear();
    String id = request.getParameter("id");
    params.put("id", id);
    return params;
}