【文件属性】：
文件名称：微信企业号项目
文件大小：15.94MB
文件格式：ZIP
更新时间：2021-04-12 12:27:58
企业微信 微信企业号
希垦园区项目。。企业微信，微信企业号public class Util{
private static final String UPLOAD_URL = "https://api.weixin.qq.com/cgi-bin/media/upload?access_token=ACCESS_TOKEN&type=TYPE";
public static String uploadFile(String filePath, String accessToken, String type) throws Exception{
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);
//连接
HttpURLConnection conn = (HttpURLConnection) urlObj.openConnection();
conn.setRequestMethod("POST");
conn.setDoInput(true);
conn.setDoOutput(true);
conn.setUseCaches(false);
//请求头
conn.setRequestProperty("Connection", "Keep-Alive");
conn.setRequestProperty("Charset", "UTF-8");
//conn.setRequestProperty("Content-Type","multipart/form-data;");
//设置边界
String BOUNDARY = "----------" + System.currentTimeMillis();
conn.setRequestProperty("Content-Type","multipart/form-data;boundary="+BOUNDARY);
StringBuilder sb = new StringBuilder();
sb.append("--");
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");
//输出流
OutputStream out = new DataOutputStream(conn.getOutputStream());
out.write(head);
//文件正文部分
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
byte[] foot = ("\r\n--" + BOUNDARY + "--\r\n").getBytes("utf-8");
out.write(foot);
out.flush();
out.close();
//获取响应
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();
}
reader.close();