upload File via URL - Android Network

Android examples for Network:URL

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Description

upload File via URL

Demo Code


//package com.java2s;

import java.io.DataOutputStream;

import java.io.FileInputStream;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.URL;

public class Main {
    static public String uploadFile(String uploadUrl, String name,
            String filename, String filePath, String raw_cookie) {
        String end = "\r\n";
        String twoHyphens = "--";
        String boundary = "*****";

        String newName = filename;
        String uploadFile = filePath;
        ;/*from w ww .jav a  2 s  . com*/
        String actionUrl = uploadUrl;
        try {
            URL url = new URL(actionUrl);
            HttpURLConnection con = (HttpURLConnection) url
                    .openConnection();
            /* ???Input??Output?????Cache */
            con.setDoInput(true);
            con.setDoOutput(true);
            con.setUseCaches(false);
            /* ??????method=POST */
            con.setRequestMethod("POST");
            /* setRequestProperty */
            con.setRequestProperty("Cookie", raw_cookie);
            con.setRequestProperty("Connection", "Keep-Alive");
            con.setRequestProperty("Charset", "UTF-8");
            con.setRequestProperty("Content-Type",
                    "multipart/form-data;boundary=" + boundary);
            /* ??DataOutputStream */
            DataOutputStream ds = new DataOutputStream(
                    con.getOutputStream());
            ds.writeBytes(twoHyphens + boundary + end);
            ds.writeBytes("Content-Disposition: form-data; " + "name=\""
                    + name + "\";filename=\"" + newName + "\"" + end);
            ds.writeBytes(end);

            FileInputStream fStream = new FileInputStream(uploadFile);

            int bufferSize = 1024;
            byte[] buffer = new byte[bufferSize];
            int length = -1;
            while ((length = fStream.read(buffer)) != -1) {
      
                ds.write(buffer, 0, length);
            }
            ds.writeBytes(end);
            ds.writeBytes(twoHyphens + boundary + twoHyphens + end);
            /* close streams */
            fStream.close();
            ds.flush();
            /* ????Response?? */
            InputStream is = con.getInputStream();
            int ch;
            StringBuffer b = new StringBuffer();
            while ((ch = is.read()) != -1) {
                b.append((char) ch);
            }
            ds.close();
            return b.toString().trim();
        } catch (Exception e) {
            return null;
        }
    }
}

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