HttpClient的Post請求和Get請求

雖然現在SOA、微服務盛行，但在咱們平常開發中少不了要用到HttpClient對第三方接口進行調用，這就要求咱們對最基本的使用有所瞭解，記錄一下，以避免忘記。

Get請求

@Test
public void doGet(){
    CloseableHttpClient client = HttpClients.createDefault();
    HttpGet get = new HttpGet("http://www.baidu.com");
    CloseableHttpResponse response = client.excute(get);
    int code = response.getStatusLine().getStatusCode();
    System.Out.Print(code);
    HttpEntity entity = response.getEntity();
    String content = EntityUtils.toString(eneity,"UTF-8");
    System.Out.Print(content);
    response.close();
    client.close();
}
複製代碼

帶參數的Get請求

@Test
public void doGetAndParam(){
    //建立一個HttpClient對象
    CloseableHttpClient client = HttpClients.createDefault();
    //建立一個Uri對象
    URIBuilder builder = new URIBuilder("http://www.baidu.com");
    builder.addParameter("query","花千骨");
    HttpGet get = new HttpGet(builder.build());
    //執行請求
    CloseableHttpResponse response = client.excute(get);
    //狀態碼
    int code = response.getStatusLine().getStatusCode();
    HttpEntity entity = response.getEntity();
    String content = EntityUtils.toString(entity,"utf-8");
    System.out.print(content);
    response.close();
    client.close();
}
複製代碼

Post請求

@Test
public void doPost(){
    //建立一個HttpClient對象
    CloseableHttpClient client = HttpClients.createDefault();
    HttpPost post = new HttpPost("http://localhost:8082/httpclient/post.action");
    CloseableResponse response = client.excute(post);
    int code = response.getStatusLine().getStatusCode();
    System.out.print(code);
    HttpEntity entity = resonse.getEntity();
    String content = EntityUtils.toString(entity,"utf-8");
    System.out.print(content);
    resonse.close();
    client.close();
}
複製代碼

帶參數的Pose請求

@Test
public void doPostAndParam(){
    //建立一個HttpClient對象
    CloseableHttpClient client = HttpClients.createDefault();
    //建立一個Post對象
    HttpPost post = new HttpPost("http://localhost:8082/httpclient/post.actionhttp://localhost:8082/httpclient/post.action");
    //建立一個entity模擬一個表單
    List<NameValuePair> list = new ArrayList<>();
    list.add(new BasicNameAndValuePair("name","UU"));
    list.add(new BasicNameAndValuePair("password","123"));
    //包裝成一個entity對象
    StringEntity entity = new UrlEncodeFormEntity(list,"utf-8");
    //設置請求內容
    post.setEntity(entity);
    //執行請求內容
    CloseableResponse response = client.excute(post);
    int code = response.getStatusLine().getStatusCode();
    HttpEntity contentEntity = response.getEntity();
    String content = EntityUtils.toString(contentEntity);
    System.out.print(code);
    System.out.print(content);
    response.close();
    client.close();
}
複製代碼