Http+Servlet 文件上传下载

//客户端界面package com.sky.client.face;

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import javax.swing.JButton;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JOptionPane;
import javax.swing.JPanel;

import com.sky.client.remotecall.Http;
import com.sky.http.bean.CallParam;
import com.sky.http.bean.CallResult;

//客服端
public class MyFrame extends JFrame {

 /**
  * @param args
  */
 public static String host = "localhost";// ip地址

 public static int port = 8080;// 端口

 public static String page = null;// 请求的Servlet页面

 public JButton send;

 public JButton down;

 public JPanel panel;

 public MyFrame() {
  panel = new JPanel();
  panel.setLayout(null);
  this.add(panel);

  send = new JButton("上传");
  send.setBounds(20, 30, 60, 40);
  ButtonEvent butEvent = new ButtonEvent();
  send.addActionListener(butEvent);
  panel.add(send);

  down = new JButton("下载");
  down.setBounds(100, 30, 60, 40);
  ButtonDown butDown = new ButtonDown();
  down.addActionListener(butDown);
  panel.add(down);
 }

 /*
  * 文件上传
  */
 public class ButtonEvent implements ActionListener {
  public void actionPerformed(ActionEvent e4) {
   CallParam param = new CallParam();
   param.setPage("/httpServce/fileUpload");// 111.png
   JFileChooser fileChooser = new JFileChooser();
   int i = fileChooser.showSaveDialog(MyFrame.this);// 1表示取消上传，0确定上传
   if (i == JFileChooser.APPROVE_OPTION) {
    File file = fileChooser.getSelectedFile();
    // 本地保存路径，文件名会自动从服务器端继承而来。
    FileInputStream input = null;
    try {
     int bytesize=0;
     byte[] tempbytes = new byte[(int) file.length()];
     System.out.println("byte数组的大小："+tempbytes.length);
     int byteread = 0;//byteread为一次读入的字节数
     // 读入多个字节到字节数组中，byteread为一次读入的字节数
     input = new FileInputStream(file);
     System.out.println("文件的长度："+file.length());
     int line=1;
     while ((byteread = input.read(tempbytes)) != -1) {
      System.out.println(line+"次读入的字节数："+byteread);
      line++;      
      bytesize+=byteread;
     }
     System.out.println("文件总字节数："+bytesize);
     System.out.println("文件名："+file.getName());
     param.setByt(tempbytes);
     param.setFileName(file.getName());
     CallResult result = remoteCall(param);
     result.isSuccess();
     System.out.println(result.isSuccess()+ "==============返回结果============");
     JOptionPane.showMessageDialog(MyFrame.this,"上传文件成功");
    } catch (FileNotFoundException e) {
     e.printStackTrace();
    } catch (IOException e) {
     e.printStackTrace();
    } catch (Exception e) {
     e.printStackTrace();
    }
    
   }
  }
 }

 

 /*
  * 文件下载
  */
 public class ButtonDown implements ActionListener {
  public void actionPerformed(ActionEvent e4) {
   System.out.println("------------点击下载------------");
   CallParam param = new CallParam();
   param.setPage("/httpServce/fileDown");// 要请求的Servlet
   param.setFileName("E://2011-09-02//遗留问题.txt");//要下载的文件目录
   CallResult result = null;
   try {
    result = remoteCall(param);
   } catch (Exception e) {
    e.printStackTrace();
   }
   byte[] tempbytes=result.getByt();
   JFileChooser fileChooser = new JFileChooser();
   fileChooser.setFileSelectionMode(JFileChooser.DIRECTORIES_ONLY);
   int i = fileChooser.showSaveDialog(MyFrame.this);// 1表示取消上传，0确定上传
   if (i == JFileChooser.APPROVE_OPTION) {
    File file = fileChooser.getSelectedFile();
    // 本地保存路径，文件名会自动从服务器端继承而来。
    String savePath = file.getAbsolutePath();
    System.out.println(savePath+"文件路====================");
    savePath +=File.separator+"遗留问题.txt";
    FileOutputStream output = null;
    try {
     output = new FileOutputStream(new File(savePath));
     output.write(tempbytes);
     output.flush();
     output.close();
     JOptionPane.showMessageDialog(null, "文件下载成功");
    } catch (FileNotFoundException e) {
     e.printStackTrace();
    } catch (IOException e) {
     e.printStackTrace();
    }
   }
   System.out.println(result.isSuccess()+ "==============返回结果============");
  }
 }
 /**
  *
  * @param param
  * @return
  * @throws Exception
  * 请求的方法
  */
 public CallResult remoteCall(CallParam param) throws Exception {

  Http h = new Http(host, port, param.getPage());
//  h.setCookie(ClientEnv.getInstance().getCookie());

  ByteArrayOutputStream bout = new ByteArrayOutputStream();// 创建一个新的 byte 数组输出流。
  ObjectOutputStream objOut = new ObjectOutputStream(bout);//
  objOut.writeObject(param);
  byte[] bytes = bout.toByteArray();
  param.getByt();
  h.sendRequest(bytes);

  ByteArrayInputStream bin = new ByteArrayInputStream(h.responseBytes);
  ObjectInputStream objIn = new ObjectInputStream(bin);
  Object objResult = objIn.readObject();
  CallResult result = (CallResult) objResult;  
  return result;
 }

 public static void main(String[] args) {
  MyFrame mybtn = new MyFrame();
  mybtn.setSize(200, 120);
  mybtn.setVisible(true);
  mybtn.setLocation(300, 220);
  mybtn.setTitle("socket文件的上传下载");
  mybtn.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

 }
}

 

 

 

//Http类

 

 

/**
 *
 */
package com.sky.client.remotecall;

import java.io.ByteArrayOutputStream;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.net.InetSocketAddress;
import java.net.Socket;
import java.util.HashMap;
import java.util.Vector;

/**
 * @author Ricky
 *
 */
public class Http {

 public Vector<String> vHeader = new Vector<String>();
 public String method = null;
 public String host = null;
 public int port = 80;
 public String page = null;
 public String httpStr = "HTTP/1.1";
 
 public PrintWriter pw = null;
 public InputStream in = null;
 public OutputStream out = null;
 
 public HashMap<String, String> responseMap = new HashMap<String, String>();
 public String responseText = null;
 public int responseCode = 0;
 public byte [] responseBytes = null;
 public boolean convertToText = true;
 
 public String hexString = "0123456789ABCDEF";
// public Cookie cookie = null;
 public int socketTimeout = 120000;
 
 public Http(String host,String page) {
  this(host,80,page,"POST");
 }
 
 public Http(String host,int port,String page) {
  this(host,port,page,"POST");
 }
 
 public Http(String host,int port,String page,String method) {
  this.host = host;
  this.page = page;
  this.port = port;
  this.method = method;
  initHeader();
 }
 /**
  * 设置头信息
  */
 public void initHeader() {
  try {
   addHeader("Accept: */*");//请求报头域用于指定客户端接受哪些类型的信息,此表示所有类型的信息。
   addHeader("Accept-Language: zh-cn");//接受语言类型
   if(method.equalsIgnoreCase("POST")) {
    addHeader("Content-Type: application/x-www-form-urlencoded;");//实体报头域用语指明发送给接收者的实体正文的媒体类型,此表示为复杂类型。
   }
   addHeader("UA-CPU: x86");//
   addHeader("User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; )");
   addHeader("Host: "+host);
  } catch (Exception e) {
   e.printStackTrace();
  }
 }
 
 public void addHeader(String keyValue) throws Exception {
  vHeader.add(keyValue);
 }
 
 public void addHeader(String key,String value) throws Exception {
  vHeader.add(key+": "+value);
 }
 
 public void println(String line) throws Exception {
  //System.out.println("[S]"+line);
  pw.println(line);
  pw.flush();
 }
 
 public void println() throws Exception {
  //System.out.println("[S]");
  pw.println();
  pw.flush();
 }
 
 public void write(byte [] bytes) throws Exception {
  
 }
 
 public void print(String line) throws Exception {
  //System.out.println("[S]"+line);
  pw.print(line);
  pw.flush();
 }
 
 public String readLine() throws Exception {
  byte [] buff = new byte[1024];
  int len = -1;
  for (int i = 0; i < buff.length; i++) {
   int n = in.read();
   if(i==buff.length-1) {
    len = i;
    break;
   }
   if(n=='\r') {
    len = i;
    in.read();
    break;
   }
   if(n=='\n') {
    len = i;
    break;
   }
   buff[i] = (byte)n;
  }
  if(len==-1) return null;
  String line = new String(buff,0,len);
  //System.out.println("[R]"+line);
  return line;
 }
 
 public static void main(String [] args) {
  try {
   Http http = new Http("", "");
   System.out.println(http.hexToInt("2097"));
  } catch (Exception e) {
   
  }
 }
 
 public int hexToInt(String str) throws Exception {
  if(str==null||str.trim().length()==0) return 0;
  char [] hexNumber = str.trim().toUpperCase().toCharArray();
  char [] hexChar = hexString.toCharArray();
  int n = 0;
  for (int i = 0; i < hexNumber.length; i++) {
   boolean valid = false;
   for (int j = 0; j < hexChar.length; j++) {
    if(hexNumber[i]==hexChar[j]) {
     n+=(j*Math.pow(16, hexNumber.length-i-1));
     valid = true;
    }
   }
   if(!valid) return 0;
  }
  return n;
 }
 /**
  *
  * @param line
  * @return
  * @throws Exception
  * 解析头文件
  */
 
 public boolean parseHeader(String line) throws Exception {
  if(line==null || line.trim().length()==0) return false;
  int index = line.indexOf(":");
  if(index==-1) return true;
  String key = line.substring(0,index).trim();
  String value = line.substring(index+1,line.length()).trim();
  responseMap.put(key, value);
  return true;
 }
 
 public int readAll(InputStream in,byte [] buff) throws Exception {
  int index = 0;
  int length = buff.length;
  while(true) {
   int len = in.read(buff,index,length-index);
   if(len==-1) return index;
   index+=len;
   if(index>=length-1) break;
  }
  return length;
 }
  /**
   *
   * @param content
   * @throws Exception
   * 发送String类型的数据
   */
 public void sendRequest(String content) throws Exception {
  
  Socket s = new Socket();
  try {
   s.setSoTimeout(120000);
   s.connect(new InetSocketAddress(host, 80),120000);
   in = s.getInputStream();
   out = s.getOutputStream();
   pw = new PrintWriter(out);
   responseBytes = null;
   if(content!=null) {
    addHeader("Content-Length", ""+content.getBytes().length);
   }
//   if(cookie!=null) {
//    String strCookie = cookie.getCookie();
//    if(strCookie!=null && strCookie.trim().length()>0) {
//     addHeader("Cookie",strCookie);
//    }
//   }
   println(method+" "+page+" "+httpStr);
   for (int i = 0; i < vHeader.size(); i++) {
    String str = vHeader.get(i);
    println(str);
   }
   println();
   if(content!=null) print(content);
   
   
   String line = null;
   
   line = readLine();
   int index1 = line.indexOf(" ");
   if(index1==-1) throw new Exception("未能解析状态码");
   int index2 = line.indexOf(" ", index1+1);
   String code = line.substring(index1+1,index2);
   //System.out.println("状态码：["+code+"]");
   
   responseCode = Integer.parseInt(code);
   
   while((line=readLine())!=null) {
    if(!parseHeader(line)) break;
   }
   
   String strCookie = responseMap.get("Set-Cookie");
//   if(strCookie!=null && cookie!=null) {
//    cookie.setCookie(strCookie);
//   }
   
   String strContentLength = responseMap.get("Content-Length");
   String strTransferEncoding = responseMap.get("Transfer-Encoding");
   if(strContentLength!=null) {
    int contentLength = Integer.parseInt(strContentLength);
    byte [] response = new byte[contentLength];
    
    readAll(in, response);
    responseBytes = response;
    
   } else if(strTransferEncoding!=null && strTransferEncoding.equalsIgnoreCase("chunked") ) {
    ByteArrayOutputStream bout = new ByteArrayOutputStream();
    
    while(true) {
     String strLen = readLine();
     int len = hexToInt(strLen);
     if(len==0) break;
     byte [] buff = new byte[len];
     readAll(in, buff);     
     bout.write(buff, 0, len);
     readLine();
    }
    
    responseBytes = bout.toByteArray();
    
    
   }
   
   if(responseBytes!=null && convertToText) {
    String strResponse = new String(responseBytes,"GBK");
    
    //System.out.println("================response begin===============");
    //System.out.println(strResponse);
    //System.out.println("================response end=================");
    responseText = strResponse;
   }
  } catch (Exception ex) {
   ex.printStackTrace();
   throw ex;
  } finally {
   try {in.close();} catch (Exception e) {}
   try {out.close();} catch (Exception e) {}
   try {s.close();} catch (Exception e) {}
  }
  
 }
 
 /**
  *
  * @param content
  * @throws Exception
  * 发送byte类型的数据
  */
 public void sendRequest(byte [] content) throws Exception {
  
  Socket s = new Socket();
  try {
   s.setSoTimeout(socketTimeout);
   s.connect(new InetSocketAddress(host, port),socketTimeout);
   in = s.getInputStream();
   out = s.getOutputStream();
   pw = new PrintWriter(out);
   responseBytes = null;
   if(content!=null) {
    addHeader("Content-Length", ""+content.length);//添加传输内容
   }
//   if(cookie!=null) {
////    String cookieStr=null;
//    String strCookie = cookie.getCookie();
//    if(strCookie!=null && strCookie.trim().length()>0) {
//     addHeader("Cookie",strCookie);
//    }
//   }
   println(method+" "+page+" "+httpStr);
   for (int i = 0; i < vHeader.size(); i++) {
    String str = vHeader.get(i);
    println(str);
   }
   println();
   if(content!=null){
    out.write(content);
   }
      
   String line = null;
   
   line = readLine();
   int index1 = line.indexOf(" ");
   if(index1==-1) throw new Exception("未能解析状态码");
   int index2 = line.indexOf(" ", index1+1);
   String code = line.substring(index1+1,index2);
   if(!code.equals("200")) throw new Exception("错误的响应码：["+code+"]");
   
   responseCode = Integer.parseInt(code);
   
   while((line=readLine())!=null) {
    if(!parseHeader(line)) break;
   }
   
//   String strCookie = responseMap.get("Set-Cookie");
//   if(strCookie!=null && cookie!=null) {
//    cookie.setCookie(strCookie);
//   }
   
   String strContentLength = responseMap.get("Content-Length");
   String strTransferEncoding = responseMap.get("Transfer-Encoding");
   if(strContentLength!=null) {
    int contentLength = Integer.parseInt(strContentLength);
    byte [] response = new byte[contentLength];
    
    readAll(in, response);
    responseBytes = response;
    
   } else if(strTransferEncoding!=null && strTransferEncoding.equalsIgnoreCase("chunked") ) {
    ByteArrayOutputStream bout = new ByteArrayOutputStream();
    
    while(true) {
     String strLen = readLine();
     int len = hexToInt(strLen);
     if(len==0) break;
     byte [] buff = new byte[len];
     readAll(in, buff);     
     bout.write(buff, 0, len);
     readLine();
    }
    
    responseBytes = bout.toByteArray();
    
    
   }
   
   if(responseBytes!=null && convertToText) {
    String strResponse = new String(responseBytes,"GBK");
    
    //System.out.println("================response begin===============");
    //System.out.println(strResponse);
    //System.out.println("================response end=================");
    responseText = strResponse;
   }
  } catch (Exception ex) {
   throw ex;
  } finally {
   try {in.close();} catch (Exception e) {}
   try {out.close();} catch (Exception e) {}
   try {s.close();} catch (Exception e) {}
  }
  
 }

 public String getResponseText() {
  return responseText;
 }

 public void setResponseText(String responseText) {
  this.responseText = responseText;
 }

 public int getResponseCode() {
  return responseCode;
 }

 public void setResponseCode(int reponseCode) {
  this.responseCode = reponseCode;
 }

 public byte[] getResponseBytes() {
  return responseBytes;
 }

 public void setResponseBytes(byte[] reponseBytes) {
  this.responseBytes = reponseBytes;
 }

 public boolean isConvertToText() {
  return convertToText;
 }

 public void setConvertToText(boolean convertToText) {
  this.convertToText = convertToText;
 }

// public Cookie getCookie() {
//  return cookie;
// }
//
// public void setCookie(Cookie cookie) {
//  this.cookie = cookie;
// }

}

 

//发送数据类

/**
 *
 */
package com.sky.http.bean;

import java.io.File;
import java.io.FileInputStream;
import java.io.Serializable;
import java.util.ArrayList;

/**
 * @author Ricky
 * 请求数据类
 */
public class CallParam implements Serializable {
 
 public String page = null; //请求的Servlet
 
 public byte[] byt=null;  //传输的byt数据

 public String fileName;  //文件名

 public CallParam() {
 }
 
 public byte[] getByt() {
  return byt;
 }

 public void setByt(byte[] byt) {
  this.byt = byt;
 }

 public String getFileName() {
  return fileName;
 }

 public void setFileName(String fileName) {
  this.fileName = fileName;
 }

 public String getPage() {
  return page;
 }

 public void setPage(String page) {
  this.page = page;
 }
}

//返回数据类

 

/**
 *
 */
package com.sky.http.bean;

import java.io.Serializable;

/**
 * @author Ricky
 *返回结果类
 */
public class CallResult implements Serializable {

// public String exceptionName = null;
// public String exceptionStack = null;
// public Object result = null;
 public boolean success = true; 
 public byte[] byt=null;
 
 
 /**
  *
  */
 public CallResult() {
 }

 
 public byte[] getByt() {
  return byt;
 }

 public void setByt(byte[] byt) {
  this.byt = byt;
 }

// public Object getResult() {
//  return result;
// }
//
// public void setResult(Object result) {
//  this.result = result;
// }
//
// public String getExceptionName() {
//  return exceptionName;
// }
//
// public void setExceptionName(String exceptionName) {
//  this.exceptionName = exceptionName;
// }
//
// public String getExceptionStack() {
//  return exceptionStack;
// }
//
// public void setExceptionStack(String exceptionStack) {
//  this.exceptionStack = exceptionStack;
// }

 public boolean isSuccess() {
  return success;
 }

 public void setSuccess(boolean success) {
  this.success = success;
 }

}

//文件上传类

package com.sky.http.servlets;

 

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.PrintWriter;
import java.lang.reflect.InvocationTargetException;
import java.text.SimpleDateFormat;
import java.util.Date;
import javax.servlet.ServletException;
import javax.servlet.ServletInputStream;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.sky.http.bean.CallParam;
import com.sky.http.bean.CallResult;
//import com.sky.http.remoteservice.RemoteContext;

public class FileUploadServlet extends HttpServlet {

 /**
  *
  */
 public FileUploadServlet() {
 }
 
 public int readAll(InputStream in,byte [] buff) throws Exception {
  int index = 0;
  int length = buff.length;
  while(true) {
   int len = in.read(buff,index,length-index);
   System.out.println("长度："+length);
   if(len==-1) return index;
   index+=len;
   System.out.println("index："+index);
   if(index>=length-1) break;
  }
  return length;
 }
 
 
 /**
  * 文件上传
  *
  */

 protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
  
//  request.setCharacterEncoding("utf-8");
//  response.setContentType("text/html;charset=utf-8");//不写不能输出中文;
//
  System.out.println("==============提交到Servlet了================");
//  String user=request.getParameter("user");
//  String age=request.getParameter("age");
//  PrintWriter write=response.getWriter();
//  write.println("用户："+user);
//  write.println("年龄："+age);
  
  CallResult callResult = new CallResult();
//  RemoteContext.getInstance().putContext(request, response);
  try {   
   String contentLength = request.getHeader("content-length");//得到内容的长度
   int nContentLen = Integer.parseInt(contentLength);
   byte [] buff = new byte[nContentLen];
   InputStream reqIn = request.getInputStream();
   System.out.println("我是中国人："+reqIn);
   readAll(reqIn, buff);
   System.out.println("返回值哦！！！");
   
   ObjectInputStream objIn = new ObjectInputStream(new ByteArrayInputStream(buff));
   System.out.println("返回值哦！！！");
   CallParam param = (CallParam)objIn.readObject(); 
   SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd");  
   String path=sdf.format(new Date());
   String filePath = "E:" + File.separator+path ;
   System.out.println("============================上传文件夹："+filePath);
   File file = new File(filePath);
   if (file.exists()) {
    file.delete();
   } else {
    file.mkdirs();
   }
   byte[] tempbytes=param.getByt();
   System.out.println(param.getPage()+"文件名："+param.getFileName());
   FileOutputStream outSTr = new FileOutputStream(new File(filePath+ File.separator +param.getFileName()));
   outSTr.write(tempbytes);
//   outSTr.flush();
//   outSTr.close();
   callResult.setSuccess(true);
   
  } catch (Exception e) {
   Throwable th = null;
   
   if(e!=null && e instanceof InvocationTargetException) {
    th = ((InvocationTargetException) e).getTargetException();
   } else {
    th = e;
   }
   
   th.printStackTrace();
  
   
  }
//  finally {
//   RemoteContext.getInstance().removeContext();
//  }
  
  try {
   ObjectOutputStream objOut = new ObjectOutputStream(response.getOutputStream());
   objOut.writeObject(callResult);
  } catch (Exception e) {
   e.printStackTrace();
   throw new ServletException(e.getMessage());
  }
  
 }

 protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
  this.doPost(request, response);
 }

 

}

 

 

 

//文件下载类

package com.sky.http.servlets;

 

import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.lang.reflect.InvocationTargetException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.sky.http.bean.CallParam;
import com.sky.http.bean.CallResult;
//import com.sky.http.remoteservice.RemoteContext;

public class FileDownloadServlet extends HttpServlet {

 public int readAll(InputStream in, byte[] buff) throws Exception {
  int index = 0;
  int length = buff.length;
  while (true) {
   int len = in.read(buff, index, length - index);
   if (len == -1)
    return index;
   index += len;
   if (index >= length - 1)
    break;
  }
  return length;
 }

 protected void doPost(HttpServletRequest request,HttpServletResponse response) throws ServletException, IOException {
  System.out.println("--------------------提交到Servlet了-------------------");
  CallResult callResult = new CallResult();
//  RemoteContext.getInstance().putContext(request, response);
  try {
   String contentLength = request.getHeader("content-length");
   int nContentLen = Integer.parseInt(contentLength);
   byte[] buff = new byte[nContentLen];
   InputStream reqIn = request.getInputStream();
   readAll(reqIn, buff);
   ObjectInputStream objIn = new ObjectInputStream(new ByteArrayInputStream(buff));
   CallParam p = (CallParam) objIn.readObject();
   
   String filePath =p.getFileName();
   System.out.println("下载文件路径================="+filePath);
   File file=new File(filePath);
   FileInputStream input = new FileInputStream(file);
   byte[] tempbytes = new byte[(int) file.length()];
   int byteread = 0;
   int bytesize=0;
   // 读入多个字节到字节数组中，byteread为一次读入的字节数
   while ((byteread = input.read(tempbytes)) != -1) {
//    bytesize+=byteread;
   }
//   int reads = 0;
//   byte[] bytes = new byte[1024];
//   while ((reads = input.read(bytes)) != -1) {
//   }
   callResult.setByt(tempbytes);
   input.close();
  } catch (Exception e) {
   Throwable th = null;

   if (e != null && e instanceof InvocationTargetException) {
    th = ((InvocationTargetException) e).getTargetException();
   } else {
    th = e;
   }

   th.printStackTrace();

  }
//  finally {
//   RemoteContext.getInstance().removeContext();
//  }

  try {
   ObjectOutputStream objOut = new ObjectOutputStream(response.getOutputStream());
   objOut.writeObject(callResult);
  } catch (Exception e) {
   e.printStackTrace();
   throw new ServletException(e.getMessage());
  }

 }

 protected void doGet(HttpServletRequest request,
   HttpServletResponse response) throws ServletException, IOException {
  this.doPost(request, response);
 }
}

 

 

//web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app id="WebApp_ID" version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
 <display-name>httpServce</display-name>
 <!-- 文件上传 -->
 <servlet>
  <servlet-name>fileUpload</servlet-name>
  <servlet-class>com.sky.http.servlets.FileUploadServlet</servlet-class>
 </servlet>

 <servlet-mapping>
  <servlet-name>fileUpload</servlet-name>
  <url-pattern>/fileUpload</url-pattern>
 </servlet-mapping>
<!-- 文件上传 -->
<!-- 文件下载 -->
 <servlet>
  <servlet-name>fileDown</servlet-name>
  <servlet-class>com.sky.http.servlets.FileDownloadServlet</servlet-class>
 </servlet>

 <servlet-mapping>
  <servlet-name>fileDown</servlet-name>
  <url-pattern>/fileDown</url-pattern>
 </servlet-mapping>
<!-- 文件下载 -->
 <welcome-file-list>
  <welcome-file>index.html</welcome-file>
  <welcome-file>index.htm</welcome-file>
  <welcome-file>index.jsp</welcome-file>
  <welcome-file>default.html</welcome-file>
  <welcome-file>default.htm</welcome-file>
  <welcome-file>default.jsp</welcome-file>
 </welcome-file-list>
</web-app>