HTTP网络远程下载文件到本地

package com.julongtech.test;

import java.io.BufferedInputStream;
import java.io.FileOutputStream;
import java.net.HttpURLConnection;
import java.net.URL;

public class ZipTest {

  public static void main(String[] args) {
    // TODO Auto-generated method stub

    ZipTest zipTest = new ZipTest();

    try {
      //http://apache.fayea.com/commons/fileupload/binaries/commons-fileupload-1.3.1-bin.zip
      zipTest.downloadFile("http://apache.fayea.com/commons/fileupload/binaries/commons-fileupload-1.3.1-bin.zip","C:/commons-fileupload-1.3.1.zip");
    } catch (Exception e) {
      // TODO Auto-generated catch block
      e.printStackTrace();
    }  
  }
  /**
   * 文件下载的方法
   * @param urls 
   * @param fileName
   * @author julong
   * @date 2016年5月9日 下午10:30:46
   */
  public void downloadFile(String urls, String fileName){  
    //定义文件流
    FileOutputStream fileOutputStream = null;  
    //定义输出流
    BufferedInputStream bufferedInputStream = null;  
    //定义网络连接
    HttpURLConnection httpURLConnection = null;  
    URL url = null;  
    try {
      byte[] buf = new byte[1024];  
      int size = 0;  
      //创建一个URL对象  
      url = new URL(urls);  
      //打开网络连接
      httpURLConnection = (HttpURLConnection) url.openConnection();  
      //连接指定的资源  
      httpURLConnection.connect();  
      //获取网络输入流  
      bufferedInputStream = new BufferedInputStream(httpURLConnection.getInputStream());  
      //创建文件输出流  
      fileOutputStream = new FileOutputStream(fileName);  
      //读取文件流  
      while ((size = bufferedInputStream.read(buf)) != -1){
        fileOutputStream.write(buf, 0, size);  
      }
      fileOutputStream.close();  
      bufferedInputStream.close();  
      httpURLConnection.disconnect();  
    } catch (Exception e) {
      // TODO: handle exception
      e.printStackTrace();
    }finally{
      try {
        if(null !=fileOutputStream){
          fileOutputStream.close();
        }
        if(null != bufferedInputStream){
          bufferedInputStream.close();
        }
        if(null != httpURLConnection){
          httpURLConnection.disconnect();
        }
      } catch (Exception e2) {
      }
    }
  }  
}



import java.io.BufferedInputStream;
import java.io.FileOutputStream;
import java.net.HttpURLConnection;
import java.net.URL;

public class ZipTest {

  public static void main(String[] args) {
    // TODO Auto-generated method stub

    ZipTest zipTest = new ZipTest();

    try {
      //http://apache.fayea.com/commons/fileupload/binaries/commons-fileupload-1.3.1-bin.zip
      zipTest.downloadFile("http://apache.fayea.com/commons/fileupload/binaries/commons-fileupload-1.3.1-bin.zip","C:/commons-fileupload-1.3.1.zip");
    } catch (Exception e) {
      // TODO Auto-generated catch block
      e.printStackTrace();
    }  
  }
  /**
   * 文件下载的方法
   * @param urls 
   * @param fileName
   * @author julong
   * @date 2016年5月9日 下午10:30:46
   */
  public void downloadFile(String urls, String fileName){  
    //定义文件流
    FileOutputStream fileOutputStream = null;  
    //定义输出流
    BufferedInputStream bufferedInputStream = null;  
    //定义网络连接
    HttpURLConnection httpURLConnection = null;  
    URL url = null;  
    try {
      byte[] buf = new byte[1024];  
      int size = 0;  
      //创建一个URL对象  
      url = new URL(urls);  
      //打开网络连接
      httpURLConnection = (HttpURLConnection) url.openConnection();  
      //连接指定的资源  
      httpURLConnection.connect();  
      //获取网络输入流  
      bufferedInputStream = new BufferedInputStream(httpURLConnection.getInputStream());  
      //创建文件输出流  
      fileOutputStream = new FileOutputStream(fileName);  
      //读取文件流  
      while ((size = bufferedInputStream.read(buf)) != -1){
        fileOutputStream.write(buf, 0, size);  
      }
      fileOutputStream.close();  
      bufferedInputStream.close();  
      httpURLConnection.disconnect();  
    } catch (Exception e) {
      // TODO: handle exception
      e.printStackTrace();
    }finally{
      try {
        if(null !=fileOutputStream){
          fileOutputStream.close();
        }
        if(null != bufferedInputStream){
          bufferedInputStream.close();
        }
        if(null != httpURLConnection){
          httpURLConnection.disconnect();
        }
      } catch (Exception e2) {
      }
    }
  }  
}