Before we do the message reply when we message reply simply do a classification, in front there how about reply [common message type messages], there will be about reply method multimedia message [MMS] contains the reply picture message / reply speech news / video message reply / reply music news, here in reply to the message as an example to explain the pictures!
Remember the message classification before the standard is that one is not need to upload multimedia resources to Tencent server while the other one is needed, so here the first step we need to do is upload resources to Tencent server, here we call [creative management Interface (later there will be a special section describes) upload pictures of the same this interface can provide us with the management of voice, video, music, news, here with pictures, for example (document address: HTTP: / /mp.weixin.qq.com/wiki/10/10ea5a44870f53d79449290dfd43d006.html ). In this document we can find a way to upload analog form upload, and then returned to us we need to respond to messages need to use the parameters: media_id!
(A) material interface to upload pictures
Interface_url.properties write to the configuration file in accordance with our agreement before the url interface requests:
1 # get token of url 2 tokenUrl = HTTPS: //api.weixin.qq.com/cgi-bin/token 3 # permanent multimedia file upload url 4 mediaUrl = HTTP: //file.api.weixin.qq.com/ cgi-bin / media / upload? access_token =
Then I wrote here a simulation tools HttpPostUploadUtil.java form to upload the following code:
1 package com.gede.wechat.util; 2 3 import java.io.BufferedReader; 4 import java.io.DataInputStream; 5 import java.io.DataOutputStream; 6 import java.io.File; 7 import java.io.FileInputStream; 8 import java.io.InputStreamReader; 9 import java.io.OutputStream; 10 import java.net.HttpURLConnection; 11 import java.net.URL; 12 import java.util.Iterator; 13 import java.util.Map; 14 15 import javax.activation.MimetypesFileTypeMap; 16 17 import com.gede.web.util.GlobalConstants; 18 19 /** 20 * @author gede 21 * @version date：2019年5月26日 下午8:47:28 22 * @description ： 23 */ 24 public class HttpPostUploadUtil { 25 26 public String urlStr; 27 28 public HttpPostUploadUtil() { 29 urlStr = "http://file.api.weixin.qq.com/cgi-bin/media/upload?access_token=" 30 + GlobalConstants.getInterfaceUrl("access_token") + "&type=image"; 31 } 32 33 /** 34 * 上传图片 35 * 36 * @param urlStr 37 * @param textMap 38 * @param fileMap 39 * @return 40 */ 41 @SuppressWarnings("rawtypes") 42 public String formUpload(Map<String, String> textMap, Map<String, String> fileMap) { 43 String res = ""; 44 HttpURLConnection conn = null; 45 String BOUNDARY = "---------------------------123821742118716"; // boundary就是request头和上传文件内容的分隔符 46 try { 47 URL url = new URL(urlStr); 48 conn = (HttpURLConnection) url.openConnection(); 49 conn.setConnectTimeout(5000); 50 conn.setReadTimeout(30000); 51 conn.setDoOutput(true); 52 conn.setDoInput(true); 53 conn.setUseCaches(false); 54 conn.setRequestMethod("POST"); 55 conn.setRequestProperty("Connection", "Keep-Alive"); 56 conn.setRequestProperty("User-Agent", "Mozilla/5.0 (Windows; U; Windows NT 6.1; zh-CN; rv:1.9.2.6)"); 57 conn.setRequestProperty("Content-Type", "multipart/form-data; boundary=" + BOUNDARY); 58 59 OutputStream out = new DataOutputStream(conn.getOutputStream()); 60 // text 61 if (textMap != null) { 62 StringBuffer strBuf = new StringBuffer(); 63 Iterator<?> iter = textMap.entrySet().iterator(); 64 while (iter.hasNext()) { 65 Map.Entry entry = (Map.Entry) iter.next(); 66 String inputName = (String) entry.getKey(); 67 String inputValue = (String) entry.getValue(); 68 if (inputValue == null) { 69 continue; 70 } 71 strBuf.append("\r\n").append("--").append(BOUNDARY).append("\r\n"); 72 strBuf.append("Content-Disposition: form-data; name=\"" + inputName + "\"\r\n\r\n"); 73 strBuf.append(inputValue); 74 } 75 out.write(strBuf.toString().getBytes()); 76 } 77 78 // file 79 if (fileMap != null) { 80 Iterator<?> iter = fileMap.entrySet().iterator(); 81 while (iter.hasNext()) { 82 Map.Entry entry = (Map.Entry) iter.next(); 83 String inputName = (String) entry.getKey(); 84 String inputValue = (String) entry.getValue(); 85 if (inputValue == null) { 86 continue; 87 } 88 File file = new File(inputValue); 89 String filename = file.getName(); 90 String contentType = new MimetypesFileTypeMap().getContentType(file); 91 if (filename.endsWith(".jpg")) { 92 contentType = "image/jpg"; 93 } 94 if (contentType == null || contentType.equals("")) { 95 contentType = "application/octet-stream"; 96 } 97 98 StringBuffer strBuf = new StringBuffer(); 99 strBuf.append("\r\n").append("--").append(BOUNDARY).append("\r\n"); 100 strBuf.append("Content-Disposition: form-data; name=\"" + inputName + "\"; filename=\"" + filename 101 + "\"\r\n"); 102 strBuf.append("Content-Type:" + contentType + "\r\n\r\n"); 103 104 out.write(strBuf.toString().getBytes()); 105 106 DataInputStream in = new DataInputStream(new FileInputStream(file)); 107 int bytes = 0; 108 byte[] bufferOut = new byte[1024]; 109 while ((bytes = in.read(bufferOut)) != -1) { 110 out.write(bufferOut, 0, bytes); 111 } 112 in.close(); 113 } 114 } 115 116 byte[] endData = ("\r\n--" + BOUNDARY + "--\r\n").getBytes(); 117 out.write(endData); 118 out.flush(); 119 out.close(); 120 121 // 读取返回数据 122 StringBuffer strBuf = new StringBuffer(); 123 BufferedReader reader = new BufferedReader(new InputStreamReader(conn.getInputStream())); 124 String line = null; 125 while ((line = reader.readLine()) != null) { 126 strBuf.append(line).append("\n"); 127 } 128 res = strBuf.toString(); 129 reader.close(); 130 reader = null; 131 } catch (Exception e) { 132 System.out.println("发送POST请求出错。" + urlStr); 133 e.printStackTrace(); 134 } finally { 135 if (conn != null) { 136 conn.disconnect(); 137 conn = null; 138 } 139 } 140 return res; 141 } 142 143 }
We will be written after the tools you need to join us in response code corresponding to the message reply, I will be here in order to test the response code added [attention] in the event!
(B) photo Reply
Here we need to modify our [distributor] event message service code, where we will add our reply in the event of interest [], the simple code as follows:
1 String openid = map.get("FromUserName"); // 用户openid 2 String mpid = map.get("ToUserName"); // 公众号原始ID 3 ImageMessage imgmsg = new ImageMessage(); 4 imgmsg.setToUserName(openid); 5 imgmsg.setFromUserName(mpid); 6 imgmsg.setCreateTime(new Date().getTime()); 7 imgmsg.setMsgType(MessageUtil.RESP_MESSAGE_TYPE_Image); 8 if (map.get("Event").equals(MessageUtil.EVENT_TYPE_SUBSCRIBE)) { // 关注事件 9 System.out.println("==============这是关注事件！"); 10 Image img = new Image(); 11 HttpPostUploadUtil util=new HttpPostUploadUtil(); 12 String filepath="H:\\1.jpg"; 13 Map<String, String> textMap = new HashMap<String, String>(); 14 textMap.put("name", "testname"); 15 Map<String, String> fileMap = new HashMap<String, String>(); 16 fileMap.put("userfile", filepath); 17 String mediaidrs = util.formUpload(textMap, fileMap); 18 System.out.println (mediaidrs); 19 String mediaid=JSONObject.fromObject(mediaidrs).getString("media_id"); 20 img.setMediaId(mediaid); 21 imgmsg.setImage(img); 22 return MessageUtil.imageMessageToXml(imgmsg); 23 }
Here the code has been basically completed the entire contents of picture messages reply, reply the same whether it is voice, video responses and other processes are the same, the next and then practice on a voice reply, the final effect is roughly as follows:
