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[Java教程][实例]JAVA调用微信接口发送图文消息,不用跳到详情页


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 {
//获取微信返回的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=***************") //设置服务号的appid .append("&secret=*********************************"); //设置服务号的密匙 URL url; try {
       //模拟get请求 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; } } //获取该服务号下的用户组 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 (IOException e) { e.printStackTrace(); return array; } } //根据用户组的openId获取用户详细数据 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-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("getUserOpenids:"+jsonObject.toString()); return jsonObject; } catch (MalformedURLException e) { e.printStackTrace(); return null; } catch (IOException e) { e.printStackTrace(); return null; } } //主方法,只有服务号才能使用客服图文消息,实现点击图文链接,直接跳转到指定URL @Test public void testsendTextByOpenids(){ //String urlstr ="https://api.weixin.qq.com/cgi-bin/message/mass/send?access_token=ACCESS_TOKEN"; //群发图文消息 String urlstr ="https://api.weixin.qq.com/cgi-bin/message/custom/send?access_token=ACCESS_TOKEN"; //发送客服图文消息 urlstr =urlstr.replace("ACCESS_TOKEN", getAccess_token()); String reqjson =createGroupText(getOpenids()); try { URL httpclient =new URL(urlstr); HttpURLConnection conn =(HttpURLConnection) httpclient.openConnection(); conn.setConnectTimeout(5000); conn.setReadTimeout(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"));//传入参数 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(); } } //创建发送的数据 private String createGroupText(JSONArray array){ JSONObject gjson =new JSONObject(); //JSONObject json = getUserOpenids(array.get(3).toString()); //array参数是用户组所有的用户,该方法打印array其中一个用户的详细信息 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"); //标题 list.put("description","description"); //描述 list.put("url","http://"); //点击图文链接跳转的地址 list.put("picurl","http://"); //图文链接的图片 articles.add(list); news.put("articles", articles); JSONObject text =new JSONObject(); gjson.put("text", text); gjson.put("news", news); return gjson.toString(); }}