springboot 發起對外http post請求

直接貼已完成代碼

public PayResponse payHttpRequest( MultiValueMap<String, String> params, String signature){
    RestTemplate restTemplate = new RestTemplate();
    HttpHeaders httpHeaders = new HttpHeaders();
    HttpMethod method = HttpMethod.POST;
    httpHeaders.setContentType(MediaType.APPLICATION_FORM_URLENCODED);
    params.add("appKey",appKey);
    params.add("secret",signature);
    HttpEntity<MultiValueMap<String, String>> requestEntity = new HttpEntity<MultiValueMap<String, String>>(params, httpHeaders);
    //執行HTTP請求
    try{
        ResponseEntity<PayResponse> response = restTemplate.postForEntity(orderCreateUrl, requestEntity, PayResponse.class);
        return response.getBody();
    }catch (Exception e){
        return null;
    }
}
1.HttpEntity最好使用MultiValueMap進行發起，不然容易出錯
2.restTemplate.postForEntity(orderCreateUrl, requestEntity, PayResponse.class) 中的元類，會在得到response響應后根據對應的類進行數據解析，不要用Object直接去解析，后續會很難處理