[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();
}
}