Java编程调用微信接口实现图文信息推送功能

本文实例讲述了Java编程调用微信接口实现图文信息等推送功能。分享给大家供大家参考，具体如下：

Java调用微信接口工具类，包含素材上传、获取素材列表、上传图文消息内的图片获取URL、图文信息推送。

微信图文信息推送因注意html代码字符串中将双引号（"）替换成单引号（'），不然信息页面中包含图片将无法显示且图片后面的内容也不会显示

官方文档：http://mp.weixin.qq.com/wiki/home/

StringBuilder sb=new StringBuilder();
sb.append("{\"articles\":[");
boolean t=false;
for(MicroWechatInfo info:list){
   if(t)sb.append(",");
   Pattern p = Pattern.compile("src\\s*=\\s*'(.*?)'",Pattern.CASE_INSENSITIVE);
   String content = info.getMicrowechatcontent().replace("\"", "'");
  Matcher m = p.matcher(content);
  while (m.find()) {
    String[] str = m.group().split("'");
    if(str.length>1){
       try {
         if(!str[1].contains("//mmbiz.")){
           content = content.replace(str[1], uploadImg(UrlToFile(str[1]),getAccessToken(wx.getAppid(), wx.getAppkey())).getString("url"));
         }
       } catch (Exception e) {
       }
    }
  }
   sb.append("{\"thumb_media_id\":\""+uploadMedia(new File(info.getMicrowechatcover()), getAccessToken(wx.getAppid(), wx.getAppkey()), "image").get("media_id")+"\"," +
       "\"author\":\""+info.getMicrowechatauthor()+"\"," +
       "\"title\":\""+info.getMicrowechattitle()+"\"," +
       "\"content_source_url\":\""+info.getOriginallink()+"\"," +
       "\"digest\":\""+info.getMicrowechatabstract()+"\"," +
       "\"show_cover_pic\":\""+info.getShowcover()+"\"," +
       "\"content\":\""+content+"\"}");
   t=true;
}
sb.append("]}");

package com.xxx.frame.base.util;
import java.io.BufferedReader;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.UnsupportedEncodingException;
import java.math.BigDecimal;
import java.net.ConnectException;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URISyntaxException;
import java.net.URL;
import java.security.KeyManagementException;
import java.security.NoSuchAlgorithmException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import javax.net.ssl.HttpsURLConnection;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLSocketFactory;
import javax.net.ssl.TrustManager;
import net.sf.json.JSONObject;
import org.apache.commons.httpclient.HttpClient;
import org.apache.commons.httpclient.HttpException;
import org.apache.commons.httpclient.HttpStatus;
import org.apache.commons.httpclient.methods.PostMethod;
import org.apache.commons.httpclient.methods.multipart.FilePart;
import org.apache.commons.httpclient.methods.multipart.MultipartRequestEntity;
import org.apache.commons.httpclient.methods.multipart.Part;
import org.apache.commons.httpclient.methods.multipart.PartSource;
import org.apache.commons.httpclient.methods.multipart.StringPart;
import org.apache.commons.httpclient.protocol.Protocol;
import com.google.gson.Gson;
import com.xxx.frame.account.entity.MicroWechatAccount;
import com.xxx.frame.account.entity.MicroWechatInfo;
/**
* 微信工具类
* @author hxt
*
*/
public class WeixinUtil {
 public static String appid = "xxxxxxxxxxxxxxxxxxxxxxx";
 public static String secret = "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx";
 // 素材上传(POST)
private static final String UPLOAD_MEDIA = "https://api.weixin.qq.com/cgi-bin/material/add_material";
private static final String UPLOAD_IMG = "https://api.weixin.qq.com/cgi-bin/media/uploadimg";
private static final String BATCHGET_MATERIAL = "https://api.weixin.qq.com/cgi-bin/material/batchget_material";
/**
  * 获得ACCESS_TOKEN
  * @param appid
  * @param secret
  * @return ACCESS_TOKEN
  */
 public static String getAccessToken(String appid, String secret) {
   String url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=" + appid + "&secret=" + secret;
   JSONObject jsonObject = httpRequest(url, "GET", null);
   try {
     if(jsonObject.getString("errcode")!=null){
       return "false";
     }
   }catch (Exception e) {
   }
   return jsonObject.getString("access_token");
 }
 public static JSONObject httpRequest(String requestUrl, String requestMethod, String outputStr) {
   JSONObject jsonObject = null;
   StringBuffer buffer = new StringBuffer();
   try {
     // 创建SSLContext对象，并使用我们指定的信任管理器初始化
     TrustManager[] tm = { new MyX509TrustManager() };
     SSLContext sslContext = SSLContext.getInstance("SSL", "SunJSSE");
     sslContext.init(null, tm, new java.security.SecureRandom());
     // 从上述SSLContext对象中得到SSLSocketFactory对象
     SSLSocketFactory ssf = sslContext.getSocketFactory();
     URL url = new URL(requestUrl);
     HttpsURLConnection httpUrlConn = (HttpsURLConnection) url.openConnection();
     httpUrlConn.setSSLSocketFactory(ssf);
     httpUrlConn.setDoOutput(true);
     httpUrlConn.setDoInput(true);
     httpUrlConn.setUseCaches(false);
     // 设置请求方式（GET/POST）
     httpUrlConn.setRequestMethod(requestMethod);
     if ("GET".equalsIgnoreCase(requestMethod))
       httpUrlConn.connect();
     // 当有数据需要提交时
     if (null != outputStr) {
       OutputStream outputStream = httpUrlConn.getOutputStream();
       // 注意编码格式，防止中文乱码
       outputStream.write(outputStr.getBytes("UTF-8"));
       outputStream.close();
     }
     // 将返回的输入流转换成字符串
     InputStream inputStream = httpUrlConn.getInputStream();
     InputStreamReader inputStreamReader = new InputStreamReader(inputStream, "utf-8");
     BufferedReader bufferedReader = new BufferedReader(inputStreamReader);
     String str = null;
     while ((str = bufferedReader.readLine()) != null) {
       buffer.append(str);
     }
     bufferedReader.close();
     inputStreamReader.close();
     // 释放资源
     inputStream.close();
     inputStream = null;
     httpUrlConn.disconnect();
     jsonObject = JSONObject.fromObject(buffer.toString());
   } catch (ConnectException ce) {
   } catch (Exception e) {
   }
   return jsonObject;
 }
 /**
  * 获得getUserOpenIDs
  * @param accessToken
  * @return JSONObject
  */
 public static JSONObject getUserOpenIDs(String accessToken) {
   String url = "https://api.weixin.qq.com/cgi-bin/user/get?access_token="+accessToken+"&next_openid=";
   return httpRequest(url, "GET", null);
 }
/**
 * 把二进制流转化为byte字节数组
 * @param instream
 * @return byte[]
 * @throws Exception
 */
public static byte[] readInputStream(InputStream instream) throws Exception {
 ByteArrayOutputStream outStream = new ByteArrayOutputStream();
 byte[] buffer = new byte[1204];
 int len = 0;
 while ((len = instream.read(buffer)) != -1){
  outStream.write(buffer,0,len);
 }
 instream.close();
 return outStream.toByteArray();
}
public static File UrlToFile(String src){
  if(src.contains("http://wx.jinan.gov.cn")){
    src = src.replace("http://wx.jinan.gov.cn", "C:");
    System.out.println(src);
    return new File(src);
  }
  //new一个文件对象用来保存图片，默认保存当前工程根目录
 File imageFile = new File("mmbiz.png");
  try {
    //new一个URL对象
  URL url = new URL(src);
  //打开链接
  HttpURLConnection conn = (HttpURLConnection)url.openConnection();
  //设置请求方式为"GET"
  conn.setRequestMethod("GET");
  //超时响应时间为5秒
  conn.setConnectTimeout(5 * 1000);
  //通过输入流获取图片数据
  InputStream inStream = conn.getInputStream();
  //得到图片的二进制数据，以二进制封装得到数据，具有通用性
  byte[] data = readInputStream(inStream);
  FileOutputStream outStream = new FileOutputStream(imageFile);
  //写入数据
  outStream.write(data);
  //关闭输出流
  outStream.close();
  return imageFile;
   } catch (Exception e) {
     return imageFile;
   }
}
/**
 * 微信服务器素材上传
 * @param file 表单名称media
 * @param token access_token
 * @param type type只支持四种类型素材(video/image/voice/thumb)
 */
public static JSONObject uploadMedia(File file, String token, String type) {
 if(file==null||token==null||type==null){
  return null;
 }
 if(!file.exists()){
  return null;
 }
 String url = UPLOAD_MEDIA;
 JSONObject jsonObject = null;
 PostMethod post = new PostMethod(url);
 post.setRequestHeader("Connection", "Keep-Alive");
 post.setRequestHeader("Cache-Control", "no-cache");
 FilePart media = null;
 HttpClient httpClient = new HttpClient();
 //信任任何类型的证书
 Protocol myhttps = new Protocol("https", new MySSLProtocolSocketFactory(), 443);
 Protocol.registerProtocol("https", myhttps);
 try {
  media = new FilePart("media", file);
  Part[] parts = new Part[] { new StringPart("access_token", token),
    new StringPart("type", type), media };
  MultipartRequestEntity entity = new MultipartRequestEntity(parts,
    post.getParams());
  post.setRequestEntity(entity);
  int status = httpClient.executeMethod(post);
  if (status == HttpStatus.SC_OK) {
   String text = post.getResponseBodyAsString();
   jsonObject = JSONObject.fromObject(text);
  } else {
  }
 } catch (FileNotFoundException execption) {
 } catch (HttpException execption) {
 } catch (IOException execption) {
 }
 return jsonObject;
}
/**
 * 微信服务器获取素材列表
 */
public static JSONObject batchgetMaterial(String appid, String secret,String type, int offset, int count) {
 try {
     return JSONObject.fromObject( new String(HttpsUtil.post(BATCHGET_MATERIAL+"?access_token="+ getAccessToken(appid, secret), "{\"type\":\""+type+"\",\"offset\":"+offset+",\"count\":"+count+"}", "UTF-8"), "UTF-8"));
   } catch (KeyManagementException e) {
     e.printStackTrace();
   } catch (UnsupportedEncodingException e) {
     e.printStackTrace();
   } catch (NoSuchAlgorithmException e) {
     e.printStackTrace();
   } catch (IOException e) {
     e.printStackTrace();
   }
   return null;
}
/**
 * 上传图文消息内的图片获取URL
 * @param file 表单名称media
 * @param token access_token
 */
public static JSONObject uploadImg(File file, String token) {
 if(file==null||token==null){
  return null;
 }
 if(!file.exists()){
  return null;
 }
 String url = UPLOAD_IMG;
 JSONObject jsonObject = null;
 PostMethod post = new PostMethod(url);
 post.setRequestHeader("Connection", "Keep-Alive");
 post.setRequestHeader("Cache-Control", "no-cache");
 HttpClient httpClient = new HttpClient();
 //信任任何类型的证书
 Protocol myhttps = new Protocol("https", new MySSLProtocolSocketFactory(), 443);
 Protocol.registerProtocol("https", myhttps);
 try {
  Part[] parts = new Part[] { new StringPart("access_token", token), new FilePart("media", file) };
  MultipartRequestEntity entity = new MultipartRequestEntity(parts,
    post.getParams());
  post.setRequestEntity(entity);
  int status = httpClient.executeMethod(post);
  if (status == HttpStatus.SC_OK) {
   String text = post.getResponseBodyAsString();
   jsonObject = JSONObject.fromObject(text);
  } else {
  }
 } catch (FileNotFoundException execption) {
 } catch (HttpException execption) {
 } catch (IOException execption) {
 }
 return jsonObject;
}
/**
 * 图文信息推送
 * @param list 图文信息列表
 * @param wx 微信账号信息
 */
 public String send(List<MicroWechatInfo> list,MicroWechatAccount wx){
   StringBuilder sb=new StringBuilder();
   sb.append("{\"articles\":[");
   boolean t=false;
   for(MicroWechatInfo info:list){
     if(t)sb.append(",");
     Pattern p = Pattern.compile("src\\s*=\\s*'(.*?)'",Pattern.CASE_INSENSITIVE);
     String content = info.getMicrowechatcontent().replace("\"", "'");
    Matcher m = p.matcher(content);
    while (m.find()) {
      String[] str = m.group().split("'");
      if(str.length>1){
         try {
           if(!str[1].contains("//mmbiz.")){
             content = content.replace(str[1], uploadImg(UrlToFile(str[1]),getAccessToken(wx.getAppid(), wx.getAppkey())).getString("url"));
           }
         } catch (Exception e) {
         }
      }
    }
     sb.append("{\"thumb_media_id\":\""+uploadMedia(new File(info.getMicrowechatcover()), getAccessToken(wx.getAppid(), wx.getAppkey()), "image").get("media_id")+"\"," +
         "\"author\":\""+info.getMicrowechatauthor()+"\"," +
         "\"title\":\""+info.getMicrowechattitle()+"\"," +
         "\"content_source_url\":\""+info.getOriginallink()+"\"," +
         "\"digest\":\""+info.getMicrowechatabstract()+"\"," +
         "\"show_cover_pic\":\""+info.getShowcover()+"\"," +
         "\"content\":\""+content+"\"}");
     t=true;
   }
   sb.append("]}");
   JSONObject tt = httpRequest("https://api.weixin.qq.com/cgi-bin/material/add_news?access_token="+getAccessToken(wx.getAppid(), wx.getAppkey()), "POST", sb.toString());
   JSONObject jo = getUserOpenIDs(getAccessToken(wx.getAppid(), wx.getAppkey()));
   String outputStr = "{\"touser\":"+jo.getJSONObject("data").getJSONArray("openid")+",\"msgtype\": \"mpnews\",\"mpnews\":{\"media_id\":\""+tt.getString("media_id")+"\"}}";
   httpRequest("https://api.weixin.qq.com/cgi-bin/message/mass/send?access_token="+getAccessToken(wx.getAppid(), wx.getAppkey()), "POST", outputStr);
   return tt.getString("media_id");
 }
}

希望本文所述对大家java程序设计有所帮助。

来源：http://blog.csdn.net/sun1982fg/article/details/56012111