[Instance] JAVA calls the WeChat interface to send text and text messages. You do not need to jump to the details page.

[Instance] JAVA calls the interface to send text and text messages. You do not need to jump to the details page.

Package com. test; import java. io. IOException; import java. io. inputStream; import java. io. outputStream; import java.net. httpURLConnection; import java.net. malformedURLException; import java.net. URL; import org. junit. test; import net. sf. json. JSONArray; import net. sf. json. JSONObject; public class WechatServlet {
// Get the returned access_token private String getAccess_token () {String access_token = null; StringBuffer action = new StringBuffer (); action. append ("https://api.weixin.qq.com/cgi-bin/token? Grant_type = client_credential "). append ("& appid = ****************") // set the appid of the service number. append ("& secret = *********************************" ); // set the key URL of the service number; try {
// Simulate get request url = new URL (action. toString (); HttpURLConnection http = (HttpURLConnection) url. openConnection (); http. setRequestMethod ("GET"); http. setRequestProperty ("Content-Type", "application/x-www-form-urlencoded"); http. setDoInput (true); InputStream is = http. getInputStream (); int size = is. available (); byte [] buf = new byte [size]; is. read (buf); String resp = new String (buf, "UTF-8"); JSONObject json = JSONObject. fromObject (resp); Object object = json. get ("access_token"); if (object! = Null) {access_token = String. valueOf (object);} System. out. println ("getAccess_token:" + access_token); return access_token;} catch (MalformedURLException e) {e. printStackTrace (); return access_token;} catch (IOException e) {e. printStackTrace (); return access_token;} // get the user group public JSONArray getOpenids () {JSONArray array = null; String urlstr = "https://api.weixin.qq.com/cgi-bin/user/get? Access_token = ACCESS_TOKEN & next_openid = NEXT_OPENID "; urlstr = urlstr. replace ("ACCESS_TOKEN", getAccess_token (); urlstr = urlstr. replace ("NEXT_OPENID", ""); URL url; try {url = new URL (urlstr); HttpURLConnection http = (HttpURLConnection) url. openConnection (); http. setRequestMethod ("GET"); http. setRequestProperty ("Content-Type", "application/x-www-form-urlencoded"); http. setDoInput (true); InputStream Is = http. getInputStream (); int size = is. available (); byte [] buf = new byte [size]; is. read (buf); String resp = new String (buf, "UTF-8"); JSONObject jsonObject = JSONObject. fromObject (resp); System. out. println ("getOpenids:" + jsonObject. toString (); array = jsonObject. getJSONObject ("data "). getJSONArray ("openid"); return array;} catch (MalformedURLException e) {e. printStackTrace (); return array;} catch (I OException e) {e. printStackTrace (); return array ;}// obtain user detailed data according to the user group's openId public JSONObject getUserOpenids (String openId) {String urlstr = "https://api.weixin.qq.com/cgi-bin/user/info? Access_token = ACCESS_TOKEN & openid = OPENID & lang = zh_CN "; urlstr = urlstr. replace ("ACCESS_TOKEN", getAccess_token (); urlstr = urlstr. replace ("OPENID", openId); urlstr = urlstr. replace ("NEXT_OPENID", ""); URL url; try {url = new URL (urlstr); HttpURLConnection http = (HttpURLConnection) url. openConnection (); http. setRequestMethod ("GET"); http. setRequestProperty ("Content-Type", "application/x-www-form-urlenc Oded "); http. setDoInput (true); InputStream is = http. getInputStream (); int size = is. available (); byte [] buf = new byte [size]; is. read (buf); String resp = new String (buf, "UTF-8"); JSONObject jsonObject = JSONObject. fromObject (resp); System. out. println ("getUserOpenids:" + jsonObject. toString (); return jsonObject;} catch (MalformedURLException e) {e. printStackTrace (); return null;} catch (IOException e) {E. printStackTrace (); return null ;}// main method. Only the service number can use the customer service text message. Click the text link to directly jump to the specified URL @ Test public void testsendTextByOpenids () {// String urlstr = "https://api.weixin.qq.com/cgi-bin/message/mass/send? Access_token = ACCESS_TOKEN "; // group text message String urlstr =" https://api.weixin.qq.com/cgi-bin/message/custom/send? Access_token = ACCESS_TOKEN "; // send the customer service graphic message urlstr = urlstr. replace ("ACCESS_TOKEN", token (); String reqjson = createGroupText (getOpenids (); try {URL httpclient = new URL (urlstr); HttpURLConnection conn = (HttpURLConnection) httpclient. openConnection (); conn. setConnectTimeout (5000); conn. setreadtimeouts (2000); conn. setRequestMethod ("POST"); conn. setRequestProperty ("Content-Type", "application/x-www-form-urlencoded"); conn. setDoOutput (true); conn. setDoInput (true); conn. connect (); OutputStream OS = conn. getOutputStream (); System. out. println ("ccccc:" + reqjson); OS. write (reqjson. getBytes ("UTF-8"); // input parameter OS. flush (); OS. close (); InputStream is = conn. getInputStream (); int size = is. available (); byte [] jsonBytes = new byte [size]; is. read (jsonBytes); String message = new String (jsonBytes, "UTF-8"); System. out. println ("testsendTextByOpenids:" + message);} catch (MalformedURLException e) {e. printStackTrace ();} catch (IOException e) {e. printStackTrace () ;}}// create the sent data private String createGroupText (JSONArray array) {JSONObject gjson = new JSONObject (); // JSONObject json = getUserOpenids (array. get (3 ). toString (); // The array parameter is used by all users of the user group. This method prints the detailed information of one of the users in array gjson. put ("touser", array. get (3); gjson. put ("msgtype", "news"); JSONObject news = new JSONObject (); JSONArray articles = new JSONArray (); JSONObject list = new JSONObject (); list. put ("title", "title"); // title list. put ("description", "description"); // description list. put ("url", "http: //"); // click the url list to jump. put ("picurl", "http: //"); // The image articles of the Graphic Link. add (list); news. put ("articles", articles); JSONObject text = new JSONObject (); gjson. put ("text", text); gjson. put ("news", news); return gjson. toString ();}}