httpclient框架中，不同数据格式的情况下执行client的方法

约定不等于承诺〃 2022-05-20 09:18 23阅读 0赞

#### 1.application/json ####

拼接出来的body本质是一串Sring，所以可以用StringEntity，使用方法如下：

//构造测试数据
    JSONObject param = new JSONObject();
    param.put("key","value");
    //定义HttpClient
    CloseableHttpClient client = HttpClients.createDefault(); 
    //创建post请求
    HttpPost post = new HttpPost(testUrl);  
    //生成装载param的entity
    StringEntity entity = new StringEntity(param.toString(), "utf-8");   
    post.setEntity(entity);
    //执行请求
    CloseableHttpResponse response = TestConfig.httpClient.execute(post);
    //返回string格式的结果
    String result  = EntityUtils.toString(response.getEntity(), "utf-8");
    //关闭链接
    post.releaseConnection();
    client.close();

#### 2.application/x-www-form-urlencoded ####

拼接出来的数据格式是 key1=value1&key2=value2的格式，所以使用List来装测试数据，对应httpclient中的方法应该用UrlEncodedFormEntity，使用方法如下：

//构造测试数据
    List<NameValuePair> param = new ArrayList<NameValuePair>();
    param.add(new BasicNameValuePair("key1","value1"));
    param.add(new BasicNameValuePair("key2","value2"));
    //定义HttpClient
    CloseableHttpClient client = HttpClients.createDefault(); 
    //创建post请求
    HttpPost post = new HttpPost(testUrl);
    //生成装载param的entity
    HttpEntity entity = new UrlEncodedFormEntity(param, "utf-8");
    post.setEntity(entity);
    //执行请求
    CloseableHttpResponse response = client.execute(post);
    //返回string格式的结果
    String result  = EntityUtils.toString(response.getEntity(), "utf-8");
    //关闭链接
    post.releaseConnection();
    client.close();