package cn.ksource.web.controller.wechat.menu.util;
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import java.io.BufferedReader;
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import java.io.InputStream;
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import java.io.InputStreamReader;
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import java.io.OutputStream;
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import java.net.ConnectException;
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import java.net.URL;
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import javax.net.ssl.HttpsURLConnection;
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import javax.net.ssl.SSLContext;
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import javax.net.ssl.SSLSocketFactory;
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import javax.net.ssl.TrustManager;
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import cn.ksource.web.controller.wechat.menu.domain.AccessToken;
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import cn.ksource.web.controller.wechat.menu.domain.Menu;
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import net.sf.json.JSONException;
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import net.sf.json.JSONObject;
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/**
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* 公众平台通用接口工具类
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*
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* @author jiangxiaolei
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* @date 2013-10-15
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*/
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public class WeixinUtil {
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// 获取access_token的接口地址（GET） 限200（次/天）
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public final static String access_token_url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=APPID&secret=APPSECRET";
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// 菜单创建（POST） 限100（次/天）
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public static String menu_create_url = "https://api.weixin.qq.com/cgi-bin/menu/create?access_token=ACCESS_TOKEN";
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//关注者列表地址
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public static String attention_people_url = "https://api.weixin.qq.com/cgi-bin/user/get?access_token=ACCESS_TOKEN&next_openid=NEXT_OPENID";
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/**
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* 发起https请求并获取结果
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*
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* @param requestUrl 请求地址
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* @param requestMethod 请求方式（GET、POST）
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* @param outputStr 提交的数据
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* @return JSONObject(通过JSONObject.get(key)的方式获取json对象的属性值)
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*/
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public static JSONObject httpRequest(String requestUrl, String requestMethod, String outputStr) {
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JSONObject jsonObject = null;
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StringBuffer buffer = new StringBuffer();
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try {
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// 创建SSLContext对象，并使用我们指定的信任管理器初始化
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TrustManager[] tm = { new MyX509TrustManager() };
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SSLContext sslContext = SSLContext.getInstance("SSL", "SunJSSE");
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sslContext.init(null, tm, new java.security.SecureRandom());
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// 从上述SSLContext对象中得到SSLSocketFactory对象
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SSLSocketFactory ssf = sslContext.getSocketFactory();
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URL url = new URL(requestUrl);
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HttpsURLConnection httpUrlConn = (HttpsURLConnection) url.openConnection();
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httpUrlConn.setSSLSocketFactory(ssf);
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httpUrlConn.setDoOutput(true);
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httpUrlConn.setDoInput(true);
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httpUrlConn.setUseCaches(false);
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// 设置请求方式（GET/POST）
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httpUrlConn.setRequestMethod(requestMethod);
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if ("GET".equalsIgnoreCase(requestMethod))
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httpUrlConn.connect();
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// 当有数据需要提交时
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if (null != outputStr) {
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OutputStream outputStream = httpUrlConn.getOutputStream();
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// 注意编码格式，防止中文乱码
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outputStream.write(outputStr.getBytes("UTF-8"));
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outputStream.close();
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}
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// 将返回的输入流转换成字符串
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InputStream inputStream = httpUrlConn.getInputStream();
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InputStreamReader inputStreamReader = new InputStreamReader(inputStream, "utf-8");
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BufferedReader bufferedReader = new BufferedReader(inputStreamReader);
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String str = null;
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while ((str = bufferedReader.readLine()) != null) {
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buffer.append(str);
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}
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bufferedReader.close();
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inputStreamReader.close();
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// 释放资源
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inputStream.close();
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inputStream = null;
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httpUrlConn.disconnect();
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jsonObject = JSONObject.fromObject(buffer.toString());
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} catch (ConnectException ce) {
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System.out.println("Weixin server connection timed out.");
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} catch (Exception e) {
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e.printStackTrace();
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}
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return jsonObject;
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}
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/**
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* 获取关注者信息
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*
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* @param token
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* @return
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*/
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public static int getAttentionPeople(String token) {
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int total = 0;
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String requestUrl = attention_people_url.replace("ACCESS_TOKEN", token).replace("NEXT_OPENID", "");
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JSONObject jsonObject = httpRequest(requestUrl, "GET", null);
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//只查询关注总数，没有查询列表信息，有待扩展
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if (null != jsonObject) {
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try {
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total = jsonObject.getInt("total");
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} catch (JSONException e) {
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// 获取关注者信息失败
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System.out.println("获取关注者失败errcode:{"+jsonObject.getInt("errcode")+"} errmsg:{"+jsonObject.getString("errmsg")+"}");
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}
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}
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return total;
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}
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/**
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* 获取access_token
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*
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* @param appid 凭证
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* @param appsecret 密钥
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* @return
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*/
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public static AccessToken getAccessToken(String appid, String appsecret) {
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AccessToken accessToken = null;
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String requestUrl = access_token_url.replace("APPID", appid).replace("APPSECRET", appsecret);
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JSONObject jsonObject = httpRequest(requestUrl, "GET", null);
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// 如果请求成功
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if (null != jsonObject) {
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try {
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accessToken = new AccessToken();
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accessToken.setToken(jsonObject.getString("access_token"));
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accessToken.setExpiresIn(jsonObject.getInt("expires_in"));
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} catch (JSONException e) {
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// 获取token失败
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accessToken = null;
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System.out.println("获取token失败errcode:{"+jsonObject.getInt("errcode")+"} errmsg:{"+jsonObject.getString("errmsg")+"}");
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}
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}
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return accessToken;
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}
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/**
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* 创建菜单
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*
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* @param menu 菜单实例
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* @param accessToken 有效的access_token
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* @return 0表示成功，其他值表示失败
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*/
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public static int createMenu(Menu menu, String accessToken) {
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int result = 0;
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// 拼装创建菜单的url
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String url = menu_create_url.replace("ACCESS_TOKEN", accessToken);
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// 将菜单对象转换成json字符串
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String jsonMenu = JSONObject.fromObject(menu).toString();
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// 调用接口创建菜单
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JSONObject jsonObject = httpRequest(url, "POST", jsonMenu);
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if (null != jsonObject) {
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if (0 != jsonObject.getInt("errcode")) {
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result = jsonObject.getInt("errcode");
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System.out.println("创建菜单失败errcode:{"+jsonObject.getInt("errcode")+"} errmsg:{"+jsonObject.getString("errmsg")+"}");
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}
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}
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return result;
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}
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}
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