HttpsURLConnection实现SSL的GET/POST请求

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 package org.nercita.weixin.util;

 import java.security.cert.CertificateException;
 import java.security.cert.X509Certificate;

 import javax.net.ssl.X509TrustManager;

 /**
  * 证书信任管理器（用于https请求）
  * 这个证书管理器的作用就是让它信任我们指定的证书，下面的代码意味着信任所有证书，不管是否权威机构颁发。
  * @author zhangwenchao
  *
  */
 public class MyX509TrustManager implements  X509TrustManager{

     @Override
     public void checkClientTrusted(X509Certificate[] chain, String authType)
             throws CertificateException {


     }

     @Override
     public void checkServerTrusted(X509Certificate[] chain, String authType)
             throws CertificateException {


     }

     @Override
     public X509Certificate[] getAcceptedIssuers() {

         return null;
     }



 }

 package org.nercita.weixin.util;

 import java.io.BufferedReader;
 import java.io.InputStream;
 import java.io.InputStreamReader;
 import java.io.OutputStream;
 import java.net.ConnectException;
 import java.net.URL;

 import javax.net.ssl.HttpsURLConnection;
 import javax.net.ssl.SSLContext;
 import javax.net.ssl.SSLSocketFactory;
 import javax.net.ssl.TrustManager;

 import net.sf.json.JSONException;
 import net.sf.json.JSONObject;

 import org.nercita.weixin.domain.AccessToken;
 import org.nercita.weixin.domain.Menu;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 /**
  * 公众平台通用接口工具类
  * 用户实现https请求
  * @author zhangwenchao
  *
  */
 public class HttpsRequestUtil {

     private static Logger logger = LoggerFactory.getLogger(HttpsRequestUtil.class);

     // 获取access_token接口的地址（GET） 限200（次/天）
     public final static String access_token_url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=APPID&secret=APPSECRET";

     // 菜单创建（POST） 限100（次/天）
     public static String menu_create_url = "https://api.weixin.qq.com/cgi-bin/menu/create?access_token=ACCESS_TOKEN";



     /**
      * 发起https请求并获取结果
      *
      * @param requestUrl 请求地址
      * @param requestMethod 请求方式（GET、POST）
      * @param outputStr 提交的数据
      * @return JSONObject(通过JSONObject.get(key)的方式获取json对象的属性值)
      */
     public static JSONObject httpRequest(String requestUrl, String requestMethod, String outputStr) {
         JSONObject jsonObject = null;
         StringBuffer buffer = new StringBuffer();
         try {

             // 创建SSLContext对象，并使用我们指定的信任管理器初始化
             TrustManager[] tm = { new MyX509TrustManager() };
             SSLContext sslContext = SSLContext.getInstance("SSL", "SunJSSE");
             sslContext.init(null, tm, new java.security.SecureRandom());

             // 从上述SSLContext对象中得到SSLSocketFactory对象
             SSLSocketFactory ssf = sslContext.getSocketFactory();

             //打开连接
             URL url = new URL(requestUrl);
             HttpsURLConnection httpUrlConn = (HttpsURLConnection) url.openConnection();
             httpUrlConn.setSSLSocketFactory(ssf);
             httpUrlConn.setDoOutput(true);
             httpUrlConn.setDoInput(true);
             httpUrlConn.setUseCaches(false);

             // 设置请求方式（GET/POST）
             httpUrlConn.setRequestMethod(requestMethod);

             if ("GET".equalsIgnoreCase(requestMethod)){
                 httpUrlConn.connect();
             }
             // 当有数据需要提交时
             if (null != outputStr) {
                 OutputStream outputStream = httpUrlConn.getOutputStream();
                 // 注意编码格式，防止中文乱码
                 outputStream.write(outputStr.getBytes("UTF-8"));
                 outputStream.close();
             }

             // 将返回的输入流转换成字符串
             InputStream inputStream = httpUrlConn.getInputStream();
             InputStreamReader inputStreamReader = new InputStreamReader(inputStream, "utf-8");
             BufferedReader bufferedReader = new BufferedReader(inputStreamReader);
             String str = null;
             while ((str = bufferedReader.readLine()) != null) {
                 buffer.append(str);
             }
             bufferedReader.close();
             inputStreamReader.close();
             // 释放资源
             inputStream.close();
             inputStream = null;
             httpUrlConn.disconnect();
             jsonObject = JSONObject.fromObject(buffer.toString());
         } catch (ConnectException ce) {
             logger.error("Weixin server connection timed out.");
         } catch (Exception e) {
             logger.error("https request error:{}", e);
         }
         return jsonObject;
     }



     /**
      * 获取access_token
      * 微信服务器会返回json格式的数据：{"access_token":"ACCESS_TOKEN","expires_in":7200}
      * @param appid 凭证
      * @param appsecret 密钥
      * @return
      */
     public static AccessToken getAccessToken(String appid, String appsecret) {
         AccessToken accessToken = null;
         String requestUrl = access_token_url.replace("APPID", appid).replace("APPSECRET", appsecret);
         JSONObject jsonObject = httpRequest(requestUrl, "GET", null);
         // 如果请求成功
         if (null != jsonObject) {
             try {
                 accessToken = new AccessToken();
                 accessToken.setAccessToken(jsonObject.getString("access_token"));
                 accessToken.setExpiresIn(jsonObject.getInt("expires_in"));
             } catch (JSONException e) {
                 accessToken = null;
                 // 获取token失败
                 logger.error("获取token失败 errcode:{} errmsg:{}", jsonObject.getInt("errcode"), jsonObject.getString("errmsg"));
             }
         }
         return accessToken;
     }



     /**
      * 创建菜单
      *
      * @param menu 菜单实例
      * @param accessToken 有效的access_token
      * @return 0表示成功，其他值表示失败
      */
     public static int createMenu(Menu menu, String accessToken) {
         int result = 0;

         // 拼装创建菜单的url
         String url = menu_create_url.replace("ACCESS_TOKEN", accessToken);
         // 将菜单对象转换成json字符串
         String jsonMenu = JSONObject.fromObject(menu).toString();
         // 调用接口创建菜单
         JSONObject jsonObject = httpRequest(url, "POST", jsonMenu);

         if (null != jsonObject) {
             if (0 != jsonObject.getInt("errcode")) {
                 result = jsonObject.getInt("errcode");
                 logger.error("创建菜单失败 errcode:{} errmsg:{}", jsonObject.getInt("errcode"), jsonObject.getString("errmsg"));
             }
         }

         return result;
     }




 }