java調用http/https POST方法 附帶GET方法

1.越過https證書驗證

import javax.net.ssl.X509TrustManager;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;
public class MyX509TrustManager implements X509TrustManager {
    @Override
    public void checkClientTrusted(X509Certificate[] x509Certificates, String s) throws CertificateException {
    }
    @Override
    public void checkServerTrusted(X509Certificate[] x509Certificates, String s) throws CertificateException {
    }
    @Override
    public X509Certificate[] getAcceptedIssuers() {
        return new X509Certificate[0];
    }
}

           

2.HttpRequest工具類

package com.sean.demo04;

import javax.net.ssl.HttpsURLConnection;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLSocketFactory;
import javax.net.ssl.TrustManager;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.URL;
import java.net.URLConnection;
import java.util.List;
import java.util.Map;

public class HttpRequest {

	public static void main(String[] args){
		Map<String,Object> param = new HashMap<String,Object>();
		param.put("name","Chatroom");
        String message = JSONUtils.toJSONString(param);
        String s = HttpRequest.sendPostRoom("url", "參數");
	}

    /**
     * 向指定 URL 發送POST方法的請求
     * 
     * @param url
     *            發送請求的 URL
     * @param param  json
     *            請求參數，請求參數應該是 name1=value1&name2=value2 的形式。
     * @return 所代表遠端資源的響應結果
     */
    public static String sendPostRoom(String url, String param) {
         PrintWriter out = null;
         BufferedReader in = null;
         String result = "";
         try {
             // 建立SSLContext對象，并使用我們指定的信任管理器初始化     
              TrustManager[] tm = { new MyX509TrustManager() };
              SSLContext sslContext = SSLContext.getInstance("SSL");
              sslContext.init(null, tm, new java.security.SecureRandom());
              // 從上述SSLContext對象中得到SSLSocketFactory對象     
              SSLSocketFactory ssf = sslContext.getSocketFactory();
              // 打開和URL之間的連接配接
              URL realUrl = new URL(url);
              HttpsURLConnection conn = (HttpsURLConnection) realUrl.openConnection();
              conn.setSSLSocketFactory(ssf);
              // 設定通用的請求屬性
              conn.setRequestProperty("accept", "*/*");
              conn.setRequestProperty("connection", "Keep-Alive");
              conn.setRequestProperty("content-Type", "application/json");
              conn.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
			  //自定義的頭部資訊
              conn.setRequestProperty("X-LC-Id",XLCId);
              conn.setRequestProperty("X-LC-Key",MASTER+",master");
              // 發送POST請求必須設定如下兩行
              conn.setDoOutput(true);
              conn.setDoInput(true);
              // 擷取URLConnection對象對應的輸出流
              out = new PrintWriter(conn.getOutputStream());
              // 發送請求參數
              out.print(param);
              // flush輸出流的緩沖
              out.flush();
              // 定義BufferedReader輸入流來讀取URL的響應
              in = new BufferedReader( new InputStreamReader(conn.getInputStream()));
              String line;
              while ((line = in.readLine()) != null) {
                 result += line;
              }
              System.out.println("-----result-----"+result);
         } catch (Exception e) {
            System.out.println("發送 POST 請求出現異常！"+e);
            return "0";
         } finally{
             //使用finally塊來關閉輸出流、輸入流
             try{
                 if(out!=null){
                    out.close();
                 }
                 if(in!=null){
                     in.close();
                 }
            }catch(IOException ex){
                 ex.printStackTrace();
            }
        }
        return result;
    }
    /**
     * 向指定 URL 發送POST方法的請求
     * 
     * @param url
     *            發送請求的 URL
     * @param param
     *            請求參數，請求參數應該是 name1=value1&name2=value2 的形式。
     * @return 所代表遠端資源的響應結果
     */
    public static String sendPost(String url, String param) {
         PrintWriter out = null;
         BufferedReader in = null;
         String result = "";
         try {
             // 建立SSLContext對象，并使用我們指定的信任管理器初始化     
              TrustManager[] tm = { new MyX509TrustManager() };
              SSLContext sslContext = SSLContext.getInstance("SSL");
              sslContext.init(null, tm, new java.security.SecureRandom());
              // 從上述SSLContext對象中得到SSLSocketFactory對象     
              SSLSocketFactory ssf = sslContext.getSocketFactory();
              // 打開和URL之間的連接配接
              URL realUrl = new URL(url);
              HttpsURLConnection conn = (HttpsURLConnection) realUrl.openConnection();
              conn.setSSLSocketFactory(ssf);
              // 設定通用的請求屬性
              conn.setRequestProperty("accept", "*/*");
              conn.setRequestProperty("connection", "Keep-Alive");
              conn.setRequestProperty("content-Type", "application/json");
              conn.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
              conn.setRequestProperty("X-LC-Id",XLCId);
              conn.setRequestProperty("X-LC-Key",XLCKey);
              // 發送POST請求必須設定如下兩行
              conn.setDoOutput(true);
              conn.setDoInput(true);
              // 擷取URLConnection對象對應的輸出流
              out = new PrintWriter(conn.getOutputStream());
              // 發送請求參數
              out.print(param);
              // flush輸出流的緩沖
              out.flush();
              // 定義BufferedReader輸入流來讀取URL的響應
              in = new BufferedReader( new InputStreamReader(conn.getInputStream()));
              String line;
              while ((line = in.readLine()) != null) {
                 result += line;
              }
              System.out.println("-----result-----"+result);
         } catch (Exception e) {
            System.out.println("發送 POST 請求出現異常！"+e);
            return "0";
         } finally{
             //使用finally塊來關閉輸出流、輸入流
             try{
                 if(out!=null){
                    out.close();
                 }
                 if(in!=null){
                     in.close();
                 }
            }catch(IOException ex){
                 ex.printStackTrace();
            }
        }
        return result;
    }

    public static String sendGet(String url, String param) {
        String result = "";
        BufferedReader in = null;
        try {
            String urlNameString = url + "?" + param;
            URL realUrl = new URL(urlNameString);
            // 打開和URL之間的連接配接
            URLConnection connection = realUrl.openConnection();
            // 設定通用的請求屬性
            connection.setRequestProperty("accept", "*/*");
            connection.setRequestProperty("connection", "Keep-Alive");
            connection.setRequestProperty("user-agent",
                    "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
            //設定頭部資訊
            connection.setRequestProperty("X-LC-Id",XLCId);
            connection.setRequestProperty("X-LC-Key",XLCKey);
            // 建立實際的連接配接
            connection.connect();
            // 擷取所有響應頭字段
            Map<String, List<String>> map = connection.getHeaderFields();
            // 周遊所有的響應頭字段
            for (String key : map.keySet()) {
                System.out.println(key + "--->" + map.get(key));
            }
            // 定義 BufferedReader輸入流來讀取URL的響應
            in = new BufferedReader(new InputStreamReader(
                    connection.getInputStream()));
            String line;
            while ((line = in.readLine()) != null) {
                result += line;
            }
        } catch (Exception e) {
            System.out.println("發送GET請求出現異常！" + e);
            result = "0";
            return result;
        }
        // 使用finally塊來關閉輸入流
        finally {
            try {
                if (in != null) {
                    in.close();
                }
            } catch (Exception e2) {
                e2.printStackTrace();
            }
        }
        return result;
    }

}