JAVA post和get方式請求遠程HTTP接口

java發送http協議 一般對方都會限定post或者get 這里就是可用的方法

 

首先是POST方式

傳入參數為json 可改為任何類型

public class HttpPost implements Runnable {
    
    private String url_str;
    
    public HttpPost () {
        
    }
    
    public HttpPost (String url, boolean isPost) {
        this.url_str = url;
    }
    
    @Override
    public void run() {
        JSONObject param_json = new JSONObject();
        
        URL url = null;
        PrintWriter send_out = null;
        BufferedReader send_in = null;
        String result = "";
        try {
            //----------------------------------------------------------//
            //http://blog.csdn.net/thl331860203/article/details/51783434//
            //JAVA POST請求遠程HTTP接口                                   //
            //----------------------------------------------------------//
            url = new URL(this.url_str);
            //打開和URL之間的連接 
            URLConnection connection = url.openConnection();
            //設置通用的請求屬性  
            connection.setRequestProperty("accept", "*/*");  
            connection.setRequestProperty("connection", "Keep-Alive");  
            connection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded"); 
            connection.setRequestProperty("user-agent","Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
            end_out = new PrintWriter(connection.getOutputStream());
　　　　　　　//發送請求參數 
            send_out.print(param_json);
            //flush輸出流的緩沖 
            send_out.flush();//定義BufferedReader輸入流來讀取URL的響應
            send_in = new BufferedReader(new InputStreamReader(connection.getInputStream()));
            String line;
            while((line = send_in.readLine()) != null){
                result += line;
            }
            getResultData(result);
        } catch (MalformedURLException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
    
    public void getResultData(String result) {
    }
}            

 

接下來是Get方式

public class HttpGet implements Runnable {
    
    private String url_str;public HttpGet() {
        
    }
    
    public HttpGet(String url, boolean isPost) {
        this.url_str = url;
    }
    
    @Override
    public void run() {
        JSONObject param_json = new JSONObject();
        
        URL url = null;
        PrintWriter send_out = null;
        BufferedReader send_in = null;
        String result = "";
        try {
            //----------------------------------------------------------//
            //http://blog.csdn.net/thl331860203/article/details/51783434//
            //JAVA POST請求遠程HTTP接口                                   //
            //----------------------------------------------------------//
            url = new URL(this.url_str);
            //打開和URL之間的連接 
            URLConnection connection = url.openConnection();
            //設置通用的請求屬性  
            connection.setRequestProperty("accept", "*/*");  
            connection.setRequestProperty("connection", "Keep-Alive");  
            connection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded"); 
            connection.setRequestProperty("user-agent","Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");//建立連接
            connection.connect();
            //定義BufferedReader輸入流來讀取URL的響應
            send_in = new BufferedReader(new InputStreamReader(connection.getInputStream()));
            String line;
            while((line = send_in.readLine()) != null){
                result += line;
            }
            getResultData(result);
        } catch (MalformedURLException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
    
    public void getResultData(String result) {

    }
}

 

關於實現

HttpGet test = new HttpGet("");
Thread thread = new Thread(test);
thread.start();

因為JAVA在某版本之后 為了防止協議沒有響應 所以不允許直接使用這個方法 一定要在子線程中使用

以上除了代碼以外都是自己的理解 如果不對 請指出 謝謝