原文鏈接:https://blog.csdn.net/justry_deng/article/details/81042379
POST無參:
/** * POST---無參測試 * * @date 2018年7月13日 下午4:18:50 */ @Test public void doPostTestOne() { // 獲得Http客戶端(可以理解為:你得先有一個瀏覽器;注意:實際上HttpClient與瀏覽器是不一樣的) CloseableHttpClient httpClient = HttpClientBuilder.create().build(); // 創建Post請求 HttpPost httpPost = new HttpPost("http://localhost:12345/doPostControllerOne"); // 響應模型 CloseableHttpResponse response = null; try { // 由客戶端執行(發送)Post請求 response = httpClient.execute(httpPost); // 從響應模型中獲取響應實體 HttpEntity responseEntity = response.getEntity(); System.out.println("響應狀態為:" + response.getStatusLine()); if (responseEntity != null) { System.out.println("響應內容長度為:" + responseEntity.getContentLength()); System.out.println("響應內容為:" + EntityUtils.toString(responseEntity)); } } catch (ClientProtocolException e) { e.printStackTrace(); } catch (ParseException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } finally { try { // 釋放資源 if (httpClient != null) { httpClient.close(); } if (response != null) { response.close(); } } catch (IOException e) { e.printStackTrace(); } } }
POST有參(普通參數):
注:POST傳遞普通參數時,方式與GET一樣即可,這里以直接在url后綴上參數的方式示例。
/** * POST---有參測試(普通參數) * * @date 2018年7月13日 下午4:18:50 */ @Test public void doPostTestFour() { // 獲得Http客戶端(可以理解為:你得先有一個瀏覽器;注意:實際上HttpClient與瀏覽器是不一樣的) CloseableHttpClient httpClient = HttpClientBuilder.create().build(); // 參數 StringBuffer params = new StringBuffer(); try { // 字符數據最好encoding以下;這樣一來,某些特殊字符才能傳過去(如:某人的名字就是“&”,不encoding的話,傳不過去) params.append("name=" + URLEncoder.encode("&", "utf-8")); params.append("&"); params.append("age=24"); } catch (UnsupportedEncodingException e1) { e1.printStackTrace(); } // 創建Post請求 HttpPost httpPost = new HttpPost("http://localhost:12345/doPostControllerFour" + "?" + params); // 設置ContentType(注:如果只是傳普通參數的話,ContentType不一定非要用application/json) httpPost.setHeader("Content-Type", "application/json;charset=utf8"); // 響應模型 CloseableHttpResponse response = null; try { // 由客戶端執行(發送)Post請求 response = httpClient.execute(httpPost); // 從響應模型中獲取響應實體 HttpEntity responseEntity = response.getEntity(); System.out.println("響應狀態為:" + response.getStatusLine()); if (responseEntity != null) { System.out.println("響應內容長度為:" + responseEntity.getContentLength()); System.out.println("響應內容為:" + EntityUtils.toString(responseEntity)); } } catch (ClientProtocolException e) { e.printStackTrace(); } catch (ParseException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } finally { try { // 釋放資源 if (httpClient != null) { httpClient.close(); } if (response != null) { response.close(); } } catch (IOException e) { e.printStackTrace(); } } }
POST有參(對象參數):
先給出User類:
/** * POST---有參測試(對象參數) * * @date 2018年7月13日 下午4:18:50 */ @Test public void doPostTestTwo() { // 獲得Http客戶端(可以理解為:你得先有一個瀏覽器;注意:實際上HttpClient與瀏覽器是不一樣的) CloseableHttpClient httpClient = HttpClientBuilder.create().build(); // 創建Post請求 HttpPost httpPost = new HttpPost("http://localhost:12345/doPostControllerTwo"); User user = new User(); user.setName("潘曉婷"); user.setAge(18); user.setGender("女"); user.setMotto("姿勢要優雅~"); // 我這里利用阿里的fastjson,將Object轉換為json字符串; // (需要導入com.alibaba.fastjson.JSON包) String jsonString = JSON.toJSONString(user); StringEntity entity = new StringEntity(jsonString, "UTF-8"); // post請求是將參數放在請求體里面傳過去的;這里將entity放入post請求體中 httpPost.setEntity(entity); httpPost.setHeader("Content-Type", "application/json;charset=utf8"); // 響應模型 CloseableHttpResponse response = null; try { // 由客戶端執行(發送)Post請求 response = httpClient.execute(httpPost); // 從響應模型中獲取響應實體 HttpEntity responseEntity = response.getEntity(); System.out.println("響應狀態為:" + response.getStatusLine()); if (responseEntity != null) { System.out.println("響應內容長度為:" + responseEntity.getContentLength()); System.out.println("響應內容為:" + EntityUtils.toString(responseEntity)); } } catch (ClientProtocolException e) { e.printStackTrace(); } catch (ParseException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } finally { try { // 釋放資源 if (httpClient != null) { httpClient.close(); } if (response != null) { response.close(); } } catch (IOException e) { e.printStackTrace(); } } }
POST有參(普通參數 + 對象參數):
注:POST傳遞普通參數時,方式與GET一樣即可,這里以通過URI獲得HttpPost的方式為例。
先給出User類:
/** * POST---有參測試(普通參數 + 對象參數) * * @date 2018年7月13日 下午4:18:50 */ @Test public void doPostTestThree() { // 獲得Http客戶端(可以理解為:你得先有一個瀏覽器;注意:實際上HttpClient與瀏覽器是不一樣的) CloseableHttpClient httpClient = HttpClientBuilder.create().build(); // 創建Post請求 // 參數 URI uri = null; try { // 將參數放入鍵值對類NameValuePair中,再放入集合中 List<NameValuePair> params = new ArrayList<>(); params.add(new BasicNameValuePair("flag", "4")); params.add(new BasicNameValuePair("meaning", "這是什么鬼?")); // 設置uri信息,並將參數集合放入uri; // 注:這里也支持一個鍵值對一個鍵值對地往里面放setParameter(String key, String value) uri = new URIBuilder().setScheme("http").setHost("localhost").setPort(12345) .setPath("/doPostControllerThree").setParameters(params).build(); } catch (URISyntaxException e1) { e1.printStackTrace(); } HttpPost httpPost = new HttpPost(uri); // HttpPost httpPost = new // HttpPost("http://localhost:12345/doPostControllerThree1"); // 創建user參數 User user = new User(); user.setName("潘曉婷"); user.setAge(18); user.setGender("女"); user.setMotto("姿勢要優雅~"); // 將user對象轉換為json字符串,並放入entity中 StringEntity entity = new StringEntity(JSON.toJSONString(user), "UTF-8"); // post請求是將參數放在請求體里面傳過去的;這里將entity放入post請求體中 httpPost.setEntity(entity); httpPost.setHeader("Content-Type", "application/json;charset=utf8"); // 響應模型 CloseableHttpResponse response = null; try { // 由客戶端執行(發送)Post請求 response = httpClient.execute(httpPost); // 從響應模型中獲取響應實體 HttpEntity responseEntity = response.getEntity(); System.out.println("響應狀態為:" + response.getStatusLine()); if (responseEntity != null) { System.out.println("響應內容長度為:" + responseEntity.getContentLength()); System.out.println("響應內容為:" + EntityUtils.toString(responseEntity)); } } catch (ClientProtocolException e) { e.printStackTrace(); } catch (ParseException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } finally { try { // 釋放資源 if (httpClient != null) { httpClient.close(); } if (response != null) { response.close(); } } catch (IOException e) { e.printStackTrace(); } } }