HttpsURLConnection实现SSL的GET/POST请求

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;    
    }   
  
      
      
  
}