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java微信接口之四—上传素材

一、微信上传素材接口简介

  1、请求:该请求是使用post提交地址为: 

  https://api.weixin.qq.com/cgi-bin/media/uploadnews?access_token=ACCESS_TOKEN

  其中ACCESS_TOKEN是我们动态获取的

  发送的数据:

  {"articles":[

  {

"thumb_media_id":"qI6_Ze_6PtV7svjolgs-rN6stStuHIjs9_DidOHaj0Q-mwvBelOXCFZiq2OsIU-p",
"author":"xxx",
"title":"Happy Day",
"content_source_url":"www.qq.com",
"content":"content",
"digest":"digest",
"show_cover_pic":"1"
},
{
"thumb_media_id":"qI6_Ze_6PtV7svjolgs-rN6stStuHIjs9_DidOHaj0Q-mwvBelOXCFZiq2OsIU-p",
"author":"xxx",
"title":"Happy Day",
"content_source_url":"www.qq.com",
"content":"content",
"digest":"digest",
"show_cover_pic":"0"
}

     ]
  }

articles,图文消息,一个图文消息支持1到10条图文
thumb_media_id,图文消息缩略图的media_id,可以在基础支持-上传多媒体文件接口(java微信接口之三—上传多媒体文件)中获得
author,图文消息的作者
title,图文消息的标题
content_source_url,在图文消息页面点击“阅读原文”后的页面
content,图文消息页面的内容,支持HTML标签
digest,图文消息的描述
show_cover_pic,是否显示封面,1为显示,0为不显示

  2、响应:该响应也是以json方式返回的

  正确的时候返回的数据:

{
"type":"news",
"media_id":"CsEf3ldqkAYJAU6EJeIkStVDSvffUJ54vqbThMgplD-VJXXof6ctX5fI6-aYyUiQ",
"created_at":1391857799
}

   type为媒体文件类型,分别有图片(image)、语音(voice)、视频(video)和缩略图(thumb),次数为news,即图文消息,

  media_id就是上传素材后素材的id,

  created_at表示创建的时间。

  错误的时候返回的数据:{"errcode":40004,"errmsg":"invalid media type"}

  errcode,为错误代码,errmsg为错误信息

  具体api可查看:http://mp.weixin.qq.com/wiki/index.php?title=%E9%AB%98%E7%BA%A7%E7%BE%A4%E5%8F%91%E6%8E%A5%E5%8F%A3

二、关于java代码的调用

  该接口的调用与java微信接口之三—上传多媒体文件一样,需要使用到commons-httpclient。其中数据是构造成json数据后,放在post方法请求体里面发送给服务器端。

三、代码实现

  1 import java.io.File;  2 import java.util.ArrayList;  3 import java.util.HashMap;  4 import java.util.List;  5 import java.util.Map;  6   7 import org.apache.commons.httpclient.methods.PostMethod;  8 import org.apache.commons.httpclient.methods.multipart.FilePart;  9 import org.apache.commons.httpclient.methods.multipart.MultipartRequestEntity; 10 import org.apache.commons.httpclient.methods.multipart.Part; 11 import org.apache.http.HttpEntity; 12 import org.apache.http.HttpResponse; 13 import org.apache.http.HttpStatus; 14 import org.apache.http.client.HttpClient; 15 import org.apache.http.client.methods.HttpGet; 16 import org.apache.http.impl.client.DefaultHttpClient; 17 import org.apache.http.util.EntityUtils; 18  19 import com.google.gson.Gson; 20 import com.google.gson.JsonArray; 21 import com.google.gson.JsonObject; 22 import com.google.gson.JsonParser; 23  24 public class Test 25 { 26     public static final String GET_TOKEN_URL = "https://api.weixin.qq.com/cgi-bin/token";// 获取access 27     public static final String UPLOAD_IMAGE_URL = "http://file.api.weixin.qq.com/cgi-bin/media/upload";// 上传多媒体文件 28     public static final String UPLOAD_FODDER_URL = "https://api.weixin.qq.com/cgi-bin/media/uploadnews"; 29     public static final String APP_ID = "wxa549b28c24cf341e"; 30     public static final String SECRET = "78d8a8cd7a4fa700142d06b96bf44a37"; 31  32     /** 33      * 上传素材 34      *  35      * @param uploadurl 36      *            apiurl 37      * @param access_token 38      *            访问token 39      * @param data 40      *            提交数据 41      * @return 42      */ 43     public static String uploadFodder(String uploadurl, String access_token, 44             String data) 45     { 46         org.apache.commons.httpclient.HttpClient client = new org.apache.commons.httpclient.HttpClient(); 47         String posturl = String.format("%s?access_token=%s", uploadurl, 48                 access_token); 49         PostMethod post = new PostMethod(posturl); 50         post 51                 .setRequestHeader( 52                         "User-Agent", 53                         "Mozilla/5.0 (Macintosh; Intel Mac OS X 10.9; rv:30.0) Gecko/20100101 Firefox/30.0"); 54         post.setRequestHeader("Host", "file.api.weixin.qq.com"); 55         post.setRequestHeader("Connection", "Keep-Alive"); 56         post.setRequestHeader("Cache-Control", "no-cache"); 57         String result = null; 58         try 59         { 60             post.setRequestBody(data); 61             int status = client.executeMethod(post); 62             if (status == HttpStatus.SC_OK) 63             { 64                 String responseContent = post.getResponseBodyAsString(); 65                 System.out.println(responseContent); 66                 JsonParser jsonparer = new JsonParser();// 初始化解析json格式的对象 67                 JsonObject json = jsonparer.parse(responseContent) 68                         .getAsJsonObject(); 69                 if (json.get("errcode") == null) 70                 {// 正确 { "type":"news", "media_id":"CsEf3ldqkAYJAU6EJeIkStVDSvffUJ54vqbThMgplD-VJXXof6ctX5fI6-aYyUiQ","created_at":1391857799} 71                     result = json.get("media_id").getAsString(); 72                 } 73             } 74         } 75         catch (Exception e) 76         { 77             e.printStackTrace(); 78         } 79         finally 80         { 81             return result; 82         } 83     } 84  85     public static void main(String[] args) throws Exception 86     { 87         String accessToken = getToken(GET_TOKEN_URL, APP_ID, SECRET);// 获取token在微信接口之一中获取 88         if (accessToken != null)// token成功获取 89         { 90             System.out.println(accessToken); 91             File file = new File("f:" + File.separator + "2000.JPG"); // 获取本地文件 92             String id = uploadImage(UPLOAD_IMAGE_URL, accessToken, "image", 93                     file);// java微信接口之三—上传多媒体文件 可获取 94             if (id != null) 95             {  96                 //构造数据 97                 Map map = new HashMap(); 98                 map.put("thumb_media_id", id); 99                 map.put("author", "wxx");100                 map.put("title", "标题");101                 map.put("content", "测试fdsfdsfsdfssfdsfsdfsdfs");102                 map.put("digest", "digest");103                 map.put("show_cover_pic", "0");104 105                 Map map2 = new HashMap();106                 map2.put("thumb_media_id", id);107                 map2.put("author", "wxx");108                 map2.put("content_source_url", "www.google.com");109                 map2.put("title", "标题");110                 map2.put("content", "测试fdsfdsfsdfssfdsfsdfsdfs");111                 map2.put("digest", "digest");112 113                 Map map3 = new HashMap();114                 List<Map> list = new ArrayList<Map>();115                 list.add(map);116                 list.add(map2);117                 map3.put("articles", list);118 119                 Gson gson = new Gson();120                 String result = gson.toJson(map3);//转换成json数据格式121                 String mediaId = uploadFodder(UPLOAD_FODDER_URL, accessToken,122                         result);123                 if (mediaId != null)124                 {125                     System.out.println(mediaId);126                 }127             }128         }129     }130 }

  上传成功就会打印该素材id。