微信工具类(常用接口)的整理

/**
     * 根据微信用户的AppId和AppSecret获取access token
     * @param wxAppId 微信用户的AppId
     * @param wxAppSecret 微信用户的AppSecret
     * @return 微信服务器的access token
     */
    public static String getAccessToken(String wxAppId, String wxAppSecret) {
        String retStr = "";
        
        try {
            String baseUrl = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid="
                    + wxAppId + "&secret=" + wxAppSecret;
            
            HttpClient httpclient = new DefaultHttpClient();
            HttpGet httpget = new HttpGet(baseUrl);
            HttpResponse response = httpclient.execute(httpget);
            String wxResultStr = EntityUtils.toString(response.getEntity());
            // 返回的数据类似【{"access_token":"ACCESS_TOKEN","expires_in":7200}】
            JSONObject objRoot = new JSONObject(wxResultStr);
            retStr = objRoot.getString("access_token");
        } catch (Exception e) {
            e.printStackTrace();
        }
        
        return retStr;
    }

/**
     * 从微信服务器取回菜单详细信息
     * @param accessToken 微信服务器访问所需accessToken
     * @return 菜单详细信息
     */
    public static String getMenuInfoFromQQ(String accessToken) {
        String retStr = "";
        
        try {
            String baseUrl = "https://api.weixin.qq.com/cgi-bin/menu/get?access_token=" + accessToken;
            
            HttpClient httpclient = new DefaultHttpClient();
            HttpGet httpget = new HttpGet(baseUrl);
            HttpResponse response = httpclient.execute(httpget);
            retStr = EntityUtils.toString(response.getEntity(), "UTF-8");
        } catch (Exception e) {
            e.printStackTrace();
        }
         return retStr;
    }

/**
     * 创建腾讯服务器的菜单信息
     * @param accessToken 微信服务器访问所需accessToken
     * @param menuInfoStr 菜单信息
     * @return true:创建成功<br/>
     *        false:创建失败
     */
    public static boolean createMenuInfo2QQ(String accessToken, String menuInfoStr) {
        boolean retBool = false;
        
        try {
            String baseUrl = "https://api.weixin.qq.com/cgi-bin/menu/create?access_token=" + accessToken;
            
            HttpClient httpclient = new DefaultHttpClient();
            HttpPost httppost = new HttpPost(baseUrl);
            httppost.setEntity(new StringEntity(menuInfoStr, HTTP.UTF_8));
            HttpResponse response = httpclient.execute(httppost);
            String wxResultStr = EntityUtils.toString(response.getEntity());
            // 返回的数据类似【{"errcode":0,"errmsg":"ok"}】
            JSONObject objRoot = new JSONObject(wxResultStr);
            if ("ok".equalsIgnoreCase(objRoot.getString("errmsg"))) {
                retBool = true;
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        
        return retBool;
    }

/**
     * 删除腾讯服务器的菜单信息
     * @param accessToken 微信服务器访问所需accessToken
     * @return true:删除成功<br/>
     *        false:删除失败
     */
    public static boolean delMenuInfoFromQQ(String accessToken) {
        boolean retBool = false;
        
        try {
            String baseUrl = "https://api.weixin.qq.com/cgi-bin/menu/delete?access_token=" + accessToken;
            
            HttpClient httpclient = new DefaultHttpClient();
            HttpGet httpget = new HttpGet(baseUrl);
            HttpResponse response = httpclient.execute(httpget);
            String wxResultStr = EntityUtils.toString(response.getEntity());
            // 返回的数据类似【{"errcode":0,"errmsg":"ok"}】
            JSONObject objRoot = new JSONObject(wxResultStr);
            if ("ok".equalsIgnoreCase(objRoot.getString("errmsg"))) {
                retBool = true;
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        
        return retBool;
    }