Java micro-letter development upload Download multimedia file _php instance

Reply pictures, audio, video messages are needed media_id, this is the need to upload multimedia files to the micro-trust server.

Upload multimedia files to the micro-trust server, as well as download files from the micro-mail server, you can refer to: http://mp.weixin.qq.com/wiki/index.php?title= uploading and downloading multimedia files

The method of uploading and downloading multimedia files is still written in Weixinutil.java.

The code is as follows:

Import Java.io.BufferedOutputStream;
Import Java.io.BufferedReader;
Import Java.io.DataInputStream;
Import Java.io.DataOutputStream;
Import Java.io.File;
Import Java.io.FileInputStream;
Import Java.io.FileOutputStream;
Import java.io.IOException;
Import Java.io.InputStream;
Import Java.io.InputStreamReader;
Import Java.io.OutputStream;
Import java.net.HttpURLConnection;
Import java.net.MalformedURLException;
Import Java.net.URL;
Import java.security.KeyManagementException;
Import java.security.NoSuchAlgorithmException;
Import java.security.NoSuchProviderException;
Import Java.security.SecureRandom;
Import Java.util.Calendar;
Import Java.util.Date;
Import Java.util.HashMap;

Import Java.util.Map;
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.lang.StringUtils;

Import Org.apache.log4j.Logger; Import Com.company.project.model.menU.accesstoken;

Import Com.company.project.model.menu.Menu;
 public class Weixinutil {private static Logger log = Logger.getlogger (Weixinutil.class);
 Public final static String APPID = "wxb927d4280e6db674";
 Public final static String App_secret = "21441e9f3226eee81e14380a768b6d1e"; Gets the Access_token interface address (get) limit of 200 (times/day) public final static String Access_token_url = "https://api.weixin.qq.com/cgi-bin/
 Token?grant_type=client_credential&appid=appid&secret=appsecret "; Create menu Public final static String Create_menu_url = "https://api.weixin.qq.com/cgi-bin/menu/create?access_token=
 Access_token "; Storage: 1.token,2: Time to get token, 3. Expiration public final static map<string,object> Accesstokenmap = new hashmap<string,
 Object> (); /** * Initiates HTTPS request and obtains results * * @param requesturl Request address * @param Requestmethod request (GET, POST) * @param outputstr submitted data * @r Eturn Jsonobject (Jsonobject.get (key) to get the property value of the JSON object)/public static Jsonobject HandleRequest (String Requesturl, String requestmEthod,string outputstr) {jsonobject jsonobject = null;
  try {URL url = new URL (requesturl);
  Httpsurlconnection conn = (httpsurlconnection) url.openconnection ();
  Sslcontext CTX = sslcontext.getinstance ("SSL", "Sunjsse");
  Trustmanager[] TM = {new Myx509trustmanager ()};
  Ctx.init (NULL, TM, New SecureRandom ());
  Sslsocketfactory SF = Ctx.getsocketfactory ();
  Conn.setsslsocketfactory (SF);
  Conn.setdoinput (TRUE);
  Conn.setdooutput (TRUE);
  Conn.setrequestmethod (Requestmethod);
  
  Conn.setusecaches (FALSE);
  if ("Get". Equalsignorecase (Requestmethod)) {conn.connect ();
  } if (Stringutils.isnotempty (OUTPUTSTR)) {OutputStream out = Conn.getoutputstream ();
  Out.write (Outputstr.getbytes ("Utf-8"));
  Out.close ();
  } InputStream in = Conn.getinputstream ();
  BufferedReader br = new BufferedReader (new InputStreamReader (in, "Utf-8"));
  StringBuffer buffer = new StringBuffer ();
  
  String line = null; while (line = Br.readline ())!= null) {Buffer.append);
  } in.close ();
  
  Conn.disconnect ();
 Jsonobject = Jsonobject.fromobject (buffer.tostring ());
  catch (Malformedurlexception e) {e.printstacktrace (); Log.error ("URL error!)
 ");
 catch (IOException e) {e.printstacktrace ();
 catch (NoSuchAlgorithmException e) {e.printstacktrace ();
 catch (Nosuchproviderexception e) {e.printstacktrace ();
 catch (Keymanagementexception e) {e.printstacktrace ();
 return jsonobject; /** * Get Access_token * * @author QINCD * @date Nov 6, 2014 9:56:43 AM */public static Accesstoken Getaccesstok
 En (String appid,string appsecret) {Accesstoken at = new Accesstoken (); Each time a access_token is obtained, it is obtained from the Accesstokenmap, and if it is expired, it is retrieved from the micro-credit and has no expiration direct return//The validity of the token obtained from the micro-letter is valid for 2 hours if (!accesstokenmap.isempty
  ()) {Date Gettokentime = (date) accesstokenmap.get ("Gettokentime");
  Calendar C = calendar.getinstance ();
  C.settime (Gettokentime);
  
  C.add (Calendar.hour_of_day, 2);
  Gettokentime = C.gettime (); if (Gettokentime.after (new DatE ()) {Log.info ("token not expired in cache, get Access_token directly from cache");
  The token is not expired and returns a string token = (string) accesstokenmap.get ("token") directly from the cache;
  Integer expire = (integer) accesstokenmap.get ("expire");
  At.settoken (token);
  At.setexpiresin (expire);
  return at;
 
 } String Requesturl = Access_token_url.replace ("APPID", APPID). Replace ("Appsecret", Appsecret);
 Jsonobject object = HandleRequest (Requesturl, "get", null);
 String Access_token = object.getstring ("Access_token");
 
 int expires_in = Object.getint ("expires_in");
 Log.info ("\naccess_token:" + Access_token);
 
 Log.info ("\nexpires_in:" + expires_in);
 At.settoken (Access_token);
 
 At.setexpiresin (expires_in);
 After each fetch Access_token, deposit ACCESSTOKENMAP//Next fetch, if not expired directly from Accesstokenmap.
 Accesstokenmap.put ("Gettokentime", New Date ());
 Accesstokenmap.put ("token", Access_token);
 
 Accesstokenmap.put ("expire", expires_in);
 return at; /** * Create Menu * * @author QINCD * @date Nov 6, 2014 9:56:36 AM */public static Boolean CReatemenu (menu menu,string accesstoken) {String Requesturl = create_menu_url.replace ("Access_token", AccessToken);
 String menujsonstring = Jsonobject.fromobject (menu). toString ();
 Jsonobject jsonobject = HandleRequest (Requesturl, "POST", menujsonstring);
 String errorcode = jsonobject.getstring ("Errcode"); if (!) 0 ". Equals (ErrorCode)) {Log.error (String.Format) (menu creation failed!)
  Errorcode:%d,errormsg:%s ", Jsonobject.getint (" Errcode "), Jsonobject.getstring (" errmsg "));
 return false; Log.info (menu creation succeeded!)
 
 ");
 return true; //Upload multimedia files to the micro-server public static final String Upload_media_url = "Http://file.api.weixin.qq.com/cgi-bin/media/upload?a
 Ccess_token=access_token&type=type "; /** * Upload multimedia files to micro-mail server <br> * @see http://www.oschina.net/code/snippet_1029535_23824 * @see http://mp.weixin.qq.com/ wiki/index.php?title= Upload Download Multimedia file * * @author QINCD * @date Nov 6, 2014 4:11:22 PM/public static Jsonobject uploadmed IATOWX (String filepath,string type,string accesstoken) throws Ioexception{File File = new file (FilePath); if (!file.exists ()) {log.error ("file does not exist!")
  ");
 return null;
 String url = upload_media_url.replace ("Access_token", Accesstoken). Replace ("type", type);
 URL urlobj = new URL (URL);
 HttpURLConnection conn = (httpurlconnection) urlobj.openconnection ();
 Conn.setdoinput (TRUE);
 Conn.setdooutput (TRUE);
 
 Conn.setusecaches (FALSE);
    Conn.setrequestproperty ("Connection", "keep-alive");
 
    Conn.setrequestproperty ("Charset", "UTF-8");
    Sets the boundary String boundary = "----------" + system.currenttimemillis (); Conn.setrequestproperty ("Content-type", "multipart/form-data;
 
    boundary= "+ boundary);
    Request body information//The first part: StringBuilder SB = new StringBuilder (); Sb.append ("--");
    Must be more than two lines sb.append (boundary);
    Sb.append ("\ r \ n");
    Sb.append ("content-disposition:form-data;name=\" file\), filename=\ "" + file.getname () + "\ \ r \ n");
 
    Sb.append ("content-type:application/octet-stream\r\n\r\n"); BytE[] head = sb.tostring (). GetBytes ("Utf-8");
    Get output stream OutputStream out = new DataOutputStream (Conn.getoutputstream ());
 
    Out.write (head);
    File body part DataInputStream in = new DataInputStream (new FileInputStream (file));
    int bytes = 0;
    byte[] Bufferout = new byte[1024];
    while ((bytes = In.read (bufferout))!=-1) {out.write (bufferout, 0, bytes);
 
    } in.close ();
 
    The end part byte[] foot = ("\r\n--" + boundary + "--\r\n"). GetBytes ("Utf-8");//define the last data divider out.write (foot);
    Out.flush ();
 
    Out.close (); /** * Read server response, must read, otherwise commit unsuccessful/try {///define BufferedReader input stream to read URL response stringbuffer buffer = new STR
     Ingbuffer ();
     BufferedReader reader = new BufferedReader (New InputStreamReader (Conn.getinputstream ()));
     String line = null;
     while (line = Reader.readline ())!= null) {buffer.append (line);
     } reader.close ();
     
     Conn.disconnect (); Return JSONOBJECT.FROMOBJECT (buffer.tostring ()); catch (Exception e) {log.error ("send POST request exception!)
     "+ e);
     E.printstacktrace ();
 return null; public static final String Download_media_url = "http://file.api.weixin.qq.com/cgi-bin/media/get?access_token=
 ACCESS_TOKEN&AMP;MEDIA_ID=MEDIA_ID "; /** * Download multimedia files from micro-servers * * @author QINCD * @date Nov 6, 2014 4:32:12 PM/public static String downloadmediafromwx (Str ing accesstoken,string mediaid,string filesavepath) throws IOException {if (stringutils.isempty) | |
 
 Stringutils.isempty (mediaId)) return null;
 String Requesturl = Download_media_url.replace ("Access_token", Accesstoken). Replace ("media_id", mediaId);
 URL url = new URL (requesturl);
 HttpURLConnection conn = (httpurlconnection) url.openconnection ();
 Conn.setrequestmethod ("get");
 Conn.setdoinput (TRUE);
 Conn.setdooutput (TRUE);
 
 InputStream in = Conn.getinputstream ();
 File dir = new file (Filesavepath);
 if (!dir.exists ()) {dir.mkdirs (); } if (!filesavepath.endsWith ("/")) {Filesavepath + = "/";
 String contentdisposition = Conn.getheaderfield ("content-disposition"); String weixinserverfilename = contentdisposition.substring (contentdisposition.indexof ("filename") +10,
 Contentdisposition.length ()-1); 
 Filesavepath + = Weixinserverfilename;
 Bufferedoutputstream BOS = new Bufferedoutputstream (new FileOutputStream (Filesavepath));
 byte[] data = new byte[1024];
 
 int len =-1;
 while (len = in.read (data))!=-1) {bos.write (Data,0,len);
 } bos.close ();
 In.close ();
 
 Conn.disconnect ();
 return filesavepath;
 }
}

Test code:

public class Weixinutiltest {/** * * @author QINCD * @date Nov 6, 2014 9:57:54 AM */public static void main (Stri Ng[] args) {//1). Get access_token Accesstoken Accesstoken = Weixinutil.getaccesstoken (Weixinutil.appid, WeixinUtil.APP_
 SECRET);
 String FilePath = "c:\\users\\qince\\pictures\\ wallpaper 20141029091612.jpg";
 Jsonobject uploadjsonobj = Testuploadmedia (FilePath, "image", Accesstoken.gettoken ());
  if (uploadjsonobj = null) {System.out.println ("Upload picture failed");
 Return
 int errcode = 0;
 if (Uploadjsonobj.containskey ("Errcode")) {Errcode = Uploadjsonobj.getint ("Errcode");
  
  } if (Errcode = 0) {System.out.println ("picture upload succeeded");
  String mediaId = uploadjsonobj.getstring ("media_id");
  Long createat = Uploadjsonobj.getlong ("Created_at");
  System.out.println ("--details:");
  System.out.println ("media_id:" + mediaId);
 System.out.println ("Created_at:" + createat); else {System.out.println ("Picture upload failed!")
  
  ");
  String errmsg = uploadjsonobj.getstring ("errmsg"); SysteM.out.println ("--details:");
  System.out.println ("Errcode:" + errcode);
 System.out.println ("ErrMsg:" + errmsg);
 } String mediaId = "6w-uvsrq2hkdsdvqjjxshwtfdplfbgi1qnbnfy8wezyb9jac2xxxcauwt8p4syph";
 String filepath = Testdownloadmedia (Accesstoken.gettoken (), MediaId, "d:/test");
 SYSTEM.OUT.PRINTLN (filepath); /** * Upload multimedia files to micro-letter * * @author QINCD * @date Nov 6, 2014 4:15:14 PM/public static Jsonobject Testuploadmedia (S
 Tring filepath,string type,string accesstoken) {try {return weixinutil.uploadmediatowx (FilePath, type, accesstoken);
 catch (IOException e) {e.printstacktrace ();
 return null; /** * Download multimedia file from micro-letter * * @author QINCD * @date Nov 6, 2014 4:56:25 PM/public static String Testdownloadmedia (Str ing accesstoken,string mediaid,string filesavedir) {try {return weixinutil.downloadmediafromwx Accesstoken, MediaId,
 FILESAVEDIR);
 catch (IOException e) {e.printstacktrace ();
 return null;
 }
}

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