File Upload : File « File « Android

1. Android
2. File
3. File

File Upload

    
//package com.softright.net;

import java.io.BufferedReader;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.List;

import android.util.Log;

import java.util.ArrayList;
import java.util.List;
 abstract class MutilPartBody {
  
  public abstract void put(DataOutputStream os) throws Exception ;

  protected int length;

  protected byte[] bytes;
  
  public byte[] getBytes() {
    return bytes;
  }

  public int getLength() {
    return length;
  }
}

/**
 * 
 * @author aroot
 * 
 */
class MutilPartEntity {

  private static final String BOUNDARY = "---------7d4a6d158c9";

  private String boundary = BOUNDARY;

  private List<MutilPartBody> bodyList;

  public MutilPartEntity() {
    this.boundary = BOUNDARY;
  }

  public MutilPartEntity(List<MutilPartBody> bodyList) {
    this.boundary = BOUNDARY;
    this.bodyList = bodyList;
  }

  public MutilPartEntity(String boundary, List<MutilPartBody> bodyList) {
    this.boundary = boundary;
    this.bodyList = bodyList;
  }

  public void addBody(MutilPartBody body) {
    if (bodyList == null) {
      bodyList = new ArrayList<MutilPartBody>();
    }
    bodyList.add(body);
  }

  public List<MutilPartBody> getBodyList() {
    return bodyList;
  }

  public void setBodyList(List<MutilPartBody> bodyList) {
    this.bodyList = bodyList;
  }

  public String getBoundary() {
    return boundary;
  }

  public void setBoundary(String boundary) {
    this.boundary = boundary;
  }
}

class FileUpload {

  private static final String BOUNDARY = "---------7d4a6d158c9";

  private static final String END = "--" + FileUpload.getBoundary()
      + "--\r\n";

  protected static final String getBoundary() {
    return BOUNDARY;
  }

  public String doUpload(String targetURL, MutilPartEntity entity)
      throws Exception {
    if (targetURL == null || targetURL.length() <= 0
        || !targetURL.startsWith("http")) {
      throw new Exception(
          "#doUpload(String targetURL, List<MutilPartBody> bodyList)# targetURL invalid, "
              + targetURL);
    }
    List<MutilPartBody> bodyList = entity.getBodyList();
    if (bodyList == null || bodyList.size() <= 0) {
      throw new Exception(
          "#doUpload(String targetURL, List<MutilPartBody> bodyList)# bodyList is empty");
    }
    HttpURLConnection conn = null;
    URL url = null;
    StringBuilder returnSb = new StringBuilder();
    try {
      url = new URL(targetURL);
    } catch (MalformedURLException e) {
    }
    try {
      conn = (HttpURLConnection) url.openConnection();
      conn.setRequestMethod("POST");
    } catch (IOException e) {
    }
    conn.setDoInput(true);
    conn.setDoOutput(true);
    conn.setUseCaches(false);
    conn.setReadTimeout(50000);
    conn.setConnectTimeout(50000);
    conn.setRequestProperty("connection", "Keep-Alive");
    conn.setRequestProperty("Content-Type",
        "multipart/form-data; boundary=" + BOUNDARY);
    try {
      DataOutputStream dataOutputStream = new DataOutputStream(
          conn.getOutputStream());
      for (int i = 0; i < bodyList.size(); i++) {
        dataOutputStream.writeBytes("--" + FileUpload.getBoundary());
        dataOutputStream.writeBytes("\r\n");
        MutilPartBody body = bodyList.get(i);
        body.put(dataOutputStream);
        if (i != bodyList.size()) {
          dataOutputStream.writeBytes("\r\n");
        }
      }
      dataOutputStream.writeBytes(END);
      dataOutputStream.flush();
      InputStream inputStream = conn.getInputStream();
      BufferedReader in = new BufferedReader(new InputStreamReader(
          inputStream));
      String inputLine;
      while ((inputLine = in.readLine()) != null) {
        returnSb.append(inputLine);
      }
      dataOutputStream.close();
      in.close();
    } catch (IOException e) {
    }
    conn.disconnect();
    return returnSb.toString();
  }

}

   
    
    
    
  

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