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
import java.io.File;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map; 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.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.HttpStatus;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.util.EntityUtils; import com.google.gson.Gson;
import com.google.gson.JsonArray;
import com.google.gson.JsonObject;
import com.google.gson.JsonParser; public class Test
{
public static final String GET_TOKEN_URL = "https://api.weixin.qq.com/cgi-bin/token";// 获取access
public static final String UPLOAD_IMAGE_URL = "http://file.api.weixin.qq.com/cgi-bin/media/upload";// 上传多媒体文件
public static final String UPLOAD_FODDER_URL = "https://api.weixin.qq.com/cgi-bin/media/uploadnews";
public static final String APP_ID = "wxa549b28c24cf341e";
public static final String SECRET = "78d8a8cd7a4fa700142d06b96bf44a37"; /**
* 上传素材
*
* @param uploadurl
* apiurl
* @param access_token
* 访问token
* @param data
* 提交数据
* @return
*/
public static String uploadFodder(String uploadurl, String access_token,
String data)
{
org.apache.commons.httpclient.HttpClient client = new org.apache.commons.httpclient.HttpClient();
String posturl = String.format("%s?access_token=%s", uploadurl,
access_token);
PostMethod post = new PostMethod(posturl);
post
.setRequestHeader(
"User-Agent",
"Mozilla/5.0 (Macintosh; Intel Mac OS X 10.9; rv:30.0) Gecko/20100101 Firefox/30.0");
post.setRequestHeader("Host", "file.api.weixin.qq.com");
post.setRequestHeader("Connection", "Keep-Alive");
post.setRequestHeader("Cache-Control", "no-cache");
String result = null;
try
{
post.setRequestBody(data);
int status = client.executeMethod(post);
if (status == HttpStatus.SC_OK)
{
String responseContent = post.getResponseBodyAsString();
System.out.println(responseContent);
JsonParser jsonparer = new JsonParser();// 初始化解析json格式的对象
JsonObject json = jsonparer.parse(responseContent)
.getAsJsonObject();
if (json.get("errcode") == null)
{// 正确 { "type":"news", "media_id":"CsEf3ldqkAYJAU6EJeIkStVDSvffUJ54vqbThMgplD-VJXXof6ctX5fI6-aYyUiQ","created_at":1391857799}
result = json.get("media_id").getAsString();
}
}
}
catch (Exception e)
{
e.printStackTrace();
}
finally
{
return result;
}
} public static void main(String[] args) throws Exception
{
String accessToken = getToken(GET_TOKEN_URL, APP_ID, SECRET);// 获取token在微信接口之一中获取
if (accessToken != null)// token成功获取
{
System.out.println(accessToken);
File file = new File("f:" + File.separator + "2000.JPG"); // 获取本地文件
String id = uploadImage(UPLOAD_IMAGE_URL, accessToken, "image",
file);// java微信接口之三—上传多媒体文件 可获取
if (id != null)
{
//构造数据
Map map = new HashMap();
map.put("thumb_media_id", id);
map.put("author", "wxx");
map.put("title", "标题");
map.put("content", "测试fdsfdsfsdfssfdsfsdfsdfs");
map.put("digest", "digest");
map.put("show_cover_pic", "0"); Map map2 = new HashMap();
map2.put("thumb_media_id", id);
map2.put("author", "wxx");
map2.put("content_source_url", "www.google.com");
map2.put("title", "标题");
map2.put("content", "测试fdsfdsfsdfssfdsfsdfsdfs");
map2.put("digest", "digest"); Map map3 = new HashMap();
List<Map> list = new ArrayList<Map>();
list.add(map);
list.add(map2);
map3.put("articles", list); Gson gson = new Gson();
String result = gson.toJson(map3);//转换成json数据格式
String mediaId = uploadFodder(UPLOAD_FODDER_URL, accessToken,
result);
if (mediaId != null)
{
System.out.println(mediaId);
}
}
}
}
}
上传成功就会打印该素材id。