media_id 获取

来源：互联网发布：android源码的使用编辑：程序博客网时间：2024/06/04 18:53

进行图片声音视频等信息的回复时我们都会需要一个media_id

"素材管理"--->"新增临时素材"提供了获取media_id的接口

private static final String UPLOAD_URL="https://api.weixin.qq.com/cgi-bin/media/upload?access_token=ACCESS_TOKEN&type=TYPE";

public static String upload(String filePath,String accessToken,String type) throws IOException{
File file=new File(filePath);
if(!file.exists()||!file.isFile()){
throw new IOException("文件不存在");
}
String url=UPLOAD_URL.replace("ACCESS_TOKEN", accessToken).replace("TYPE", type);
URL urlobj=new URL(url);
HttpURLConnection conn=(HttpURLConnection) urlobj.openConnection();
conn.setRequestMethod("POST");
conn.setDoInput(true);
conn.setDoOutput(true);
conn.setUseCaches(false);

//设置头信息
conn.setRequestProperty("Connection", "Keep-Alive");
conn.setRequestProperty("Charset","UTF-8");

//设置边界
String BOUNFARY="----------"+System.currentTimeMillis();
conn.setRequestProperty("Content-Type", "multipart/form-data;boundary="+BOUNFARY);

StringBuilder sb=new StringBuilder();
sb.append("--");
sb.append(BOUNFARY);
sb.append("\r\n");
sb.append("Content-Disposition:from-data;name=\"file\";filename=\""+file.getName()+"\"\r\n");
sb.append("Content-Type:application/actet-stream\r\n\r\n");

byte[] head=sb.toString().getBytes("utf-8");
//获得输出流
OutputStream out=new DataOutputStream(conn.getOutputStream());
//输出表头
out.write(head);

//文件正文部分
//把文件以流的方式推入到url
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();
//结尾部分
byte[] foot=("\r\n--"+BOUNFARY+"--\r\n").getBytes("utf-8");
out.write(foot);
out.flush();
out.close();

StringBuffer buffer=new StringBuffer();
BufferedReader reader=null;
String result=null;
reader=new BufferedReader(new InputStreamReader(conn.getInputStream()));
String line=null;
while((line=reader.readLine())!=null){
buffer.append(line);
}
if(result==null){
result=buffer.toString();
}
if(result!=null){
reader.close();
}
JSONObject jsonObject=JSONObject.fromObject(result);
System.out.println(jsonObject);
String typeName="media_id";
if(!"image".equals(type)&&!"voice".equals(type)&&!"video".equals(type)){
typeName=type+"_media_id";
}
String mediaid=jsonObject.getString(typeName);
return mediaid;
}

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