Salesforce 发送微信

global class WeChatUtil {
// 获取access_token的接口地址（GET）
//private String access_token_url = 'https://qyapi.weixin.qq.com/cgi-bin/gettoken?corpid=CorpID&corpsecret=SECRET';

 /* private static String sTextMsg(String touser,String agentid,String content){
   String replyMSG = '<xml>' +
                        '<ToUser><![CDATA[{0}]]></ToUser>' +      
                        '<AgentId><![CDATA[{1}]]></AgentId>' +
                        '<Content><![CDATA[{2}]]></Content>' +
                        '<MsgType>text</MsgType>' +
                        '<Safe>0</Safe>' +
                      '</xml>';
       String[] arguments = new String[]{touser,agentid,content};
       return String.format(replyMSG, arguments );
}*/

private static String sTextMsg(String touser,String agentid,String msgType,String content){
String jsonInput = '{\n' +
    ' "touser" :"'+touser+'",\n' +
    ' "agentid" :'+agentid+',\n' +
    ' "msgtype" : "'+msgType+'",\n' +
    ' "text" : { "content":"'+content+'"} ,\n' +
    ' "safe" : "0",\n' +
    '}';
return jsonInput;
}

 private static String getToken() {
     String corpid=Label.WaChatCorpID;//wx85e258caf2f54c67
     String corpsecret=Label.WeChatCorpSecret;//36QvfbRYFgGuPNVTl62IjrOvQVvmDGymqKbZjfD_6H070EqjpeBRzfC2Ai_nTg8E
    String access_token_url = 'https://qyapi.weixin.qq.com/cgi-bin/gettoken?corpid='+corpid+'&corpsecret='+corpsecret+'';
    String token = '';
    Integer expires_in=0;
  //发送http请求，需要在远程站点设置用设置访问的网址url，否则请求会失败           
        HttpRequest req = new HttpRequest();
        req.setEndpoint(access_token_url );
        req.setMethod('POST'); 
        req.setTimeout(12000);
        Http http = new Http();
        HttpResponse res = http.send(req);
        System.debug(res.getStatus()+'==============sms result========' +'|'+res.getStatusCode());
        System.debug('==============sms result2========' +'|'+res.getBody());

        // Parse JSON response to get all the totalPrice field values.
        JSONParser parser = JSON.createParser(res.getBody());

        while (parser.nextToken() != null) {
            if ((parser.getCurrentToken() == JSONToken.FIELD_NAME) && 
                (parser.getText() == 'access_token')) {
                  // Get the value.
                parser.nextToken();
                token= parser.getText();
           System.debug('==============sms getToken========' +'|'+token);
            }else  if ((parser.getCurrentToken() == JSONToken.FIELD_NAME) && 
                (parser.getText() == 'expires_in')) {
               // Get the value.
                parser.nextToken();
                expires_in= parser.getIntegerValue();
              System.debug('==============sms getToken========' +'|'+expires_in);
            }

        }

      return token;
}


  private static String httpRequest(String toUser,String agentId,String msgType,String content) {
  String access_token_url = 'https://qyapi.weixin.qq.com/cgi-bin/message/send?access_token=ACCESS_TOKEN';
    Integer errcode ;
    String errmsg = '';
     access_token_url=access_token_url.replace('ACCESS_TOKEN', getToken());
  //发送http请求，需要在远程站点设置用设置访问的网址url，否则请求会失败           
        HttpRequest req = new HttpRequest();
        req.setEndpoint(access_token_url);
       // req.setHeader('X-PrettyPrint','true');
        req.setMethod('POST'); 
     //   req.setHeader('Content-Type','application/json'); 
        req.setTimeout(12000);
        req.setBody(sTextMsg(toUser,agentId,msgType,content));
        Http http = new Http();
        HttpResponse res = http.send(req);
        System.debug(res.getStatus()+'==============sms result========' +'|'+res.getStatusCode());
        System.debug(access_token_url+'==============sms result2========' +'|'+res.getBody());
       //  System.debug('==============sms sTextMsg========' +'|'+sTextMsg('"ai.gh"','6','"helloWorld!"'));

        // Parse JSON response to get all the  field values.
   /*     JSONParser parser = JSON.createParser(res.getBody());

        while (parser.nextToken() != null) {
            if ((parser.getCurrentToken() == JSONToken.FIELD_NAME) && 
                (parser.getText() == 'errcode')) {
                  // Get the value.
                 parser.nextToken();
                errcode= parser.getIntegerValue();
           System.debug('==============sms errcode========' +'|'+errcode);
            }else  if ((parser.getCurrentToken() == JSONToken.FIELD_NAME) && 
                (parser.getText() == 'errmsg')) {
               // Get the value.
                parser.nextToken();
                errmsg= parser.getText();
              System.debug('==============sms errmsg========' +'|'+errmsg);
            }

        }*/

      return res.getBody();
    }

    /*
    *发送微信  
    */
    webservice static String sendWeChat(String toUser,String agentId,String msgType,String content) {

        return httpRequest(toUser,agentId,msgType,content);
    }

}