uploadfile.java

java版源代码,里面包含很多源代码,大家可以看看.

package com.trulytech.mantis.util;

import com.jspsmart.upload.*;
import javax.servlet.http.*;
import javax.servlet.*;
import java.io.*;
import com.trulytech.mantis.system.*;
import java.util.ArrayList;

/**
 * <p>Title: UploadFile</p>
 * <p>Description: 文件上传</p>
 * <p>Copyright: Copyright (c) 2002</p>
 * <p>Company: </p>
 * @author WangXian
 * @version 1.2
 */

public class UploadFile {

  public static long id = 0;
  /**
   * 上传文件
   * @param request 请求
   * @param mySmartUpload Upload对象
   * @return int 文件上传个数
   * @throws Exception
   */
  public static int Upload(HttpServletRequest request,
                           SmartUpload mySmartUpload) throws
      Exception {

//写日志


    int uploadCount = 0;
    logWriter.Info("开始上传文件 ");

    uploadCount = mySmartUpload.save(request.getSession().getServletContext().
                                     getRealPath("/") +
                                     System.getProperty("file.separator") +
                                     com.trulytech.mantis.system.Properties.
                                     UploadPath);
    return uploadCount;

  }

  /**
   * 上传文件(生成唯一文件名)
   * @param request 请求
   * @param mySmartUpload Upload对象
   * @return int 文件上传个数
   * @throws Exception
   */
  public static ArrayList UploadEx(HttpServletRequest request,
                                   SmartUpload mySmartUpload) throws Exception {

//写日志
    logWriter.Info("开始上传文件 ");

    ArrayList Vec = new ArrayList();
    String suffix = new String();
    String trace = new String();

    Request req = mySmartUpload.getRequest();

    //循环取得所有上载的文件
    for (int i = 0; i < mySmartUpload.getFiles().getCount(); i++) {
      changeID();
      //取得上载的文件
      com.jspsmart.upload.File myFile = mySmartUpload.getFiles().getFile(i);
      if (!myFile.isMissing()) {
        //取得上载的文件的文件名
        String myFileName = myFile.getFileName();
        //取得不带后缀的文件名
        if (myFileName.lastIndexOf('.') <= 0)
          suffix = myFileName;
        else
          suffix = myFileName.substring(0, myFileName.lastIndexOf('.'));
        //取得后缀名
        String ext = mySmartUpload.getFiles().getFile(0).getFileExt();
        //取得文件的大小
        int fileSize = myFile.getSize();
        //保存路径
        if (ext.equalsIgnoreCase("")) {
          trace = request.getSession().getServletContext().
              getRealPath("/") + System.getProperty("file.separator") +
              com.trulytech.mantis.system.Properties.UploadPath +
              System.getProperty("file.separator") + suffix +
              String.valueOf(System.currentTimeMillis()) + String.valueOf(id);
          myFile.saveAs(trace, com.jspsmart.upload.File.SAVEAS_AUTO);
          Vec.add(suffix +
                  String.valueOf(System.currentTimeMillis() + String.valueOf(id)));
        }
        else {
          trace = request.getSession().getServletContext().
              getRealPath("/") + System.getProperty("file.separator") +
              com.trulytech.mantis.system.Properties.UploadPath +
              System.getProperty("file.separator") + suffix +
              String.valueOf(System.currentTimeMillis()) + String.valueOf(id) +
              "." + ext;
          myFile.saveAs(trace, com.jspsmart.upload.File.SAVEAS_AUTO);
          Vec.add(suffix + String.valueOf(System.currentTimeMillis()) +
                  String.valueOf(id) + "." +
                  ext);

        }
      }
    }
    return Vec;
  }

  /**
   * 上传单个文件
   * @return String 如果为"",则上传失败
   * @param request HttpServletRequest
   * @param Path String 存储相对路径
   * @param FileName String 文件名
   * @param mySmartUpload SmartUpload
   * @throws Exception
   */
  public static String UploadSingle(HttpServletRequest request, String Path,
                                    String FileName,
                                    SmartUpload mySmartUpload) throws Exception {

//写日志
    logWriter.Info("开始上传文件 ");

    String trace = new String();

    Request req = mySmartUpload.getRequest();

    //循环取得所有上载的文件

    //取得上载的文件
    com.jspsmart.upload.File myFile = mySmartUpload.getFiles().getFile(0);
    if (!myFile.isMissing()) {
      //取得上载的文件的文件名
      String myFileName = myFile.getFileName();
      //取得不带后缀的文件名

      //取得后缀名
      String ext = mySmartUpload.getFiles().getFile(0).getFileExt();
      //取得文件的大小
      int fileSize = myFile.getSize();
      //保存路径
      if (ext.equalsIgnoreCase("")) {
        trace = request.getSession().getServletContext().
            getRealPath("/") + System.getProperty("file.separator") +
            Path +
            System.getProperty("file.separator") + FileName;
        myFile.saveAs(trace, com.jspsmart.upload.File.SAVEAS_AUTO);
        return FileName;
      }
      else {
        trace = request.getSession().getServletContext().
            getRealPath("/") + System.getProperty("file.separator") +
            Path +
            System.getProperty("file.separator") + FileName +
            "." + ext;
        myFile.saveAs(trace, com.jspsmart.upload.File.SAVEAS_AUTO);
        return FileName + "." + ext;

      }

    }
    else
      return "";

  }

  /**
   * 增加ID
   */
  private static synchronized void changeID() {
    id++;
    if (id > 99999999)
      id = 0;
  }

  /**
   * 下载指定文件
   * @param SrcFile String 源文件
   * @param config ServletConfig
   * @param request HttpServletRequest
   * @param response HttpServletResponse
   * @throws Exception
   */
  public static void DownLoad(String SrcFile, ServletConfig config,
                              HttpServletRequest request,
                              HttpServletResponse response) throws Exception {
    try {
      logWriter.Info("开始下载文件 " + SrcFile);
      com.jspsmart.upload.SmartUpload mySmartUpload = new com.jspsmart.upload.
          SmartUpload();
      mySmartUpload.initialize(config, request, response);

      mySmartUpload.downloadFile(SrcFile);
    }
    catch (Exception e) {
      if (e instanceof java.io.FileNotFoundException)
        throw e;
    }
  }

  /**
   * 用另外的文件名下载文件
   * @param SrcFile String
   * @param ContentType String
   * @param autoOpen  boolean 是否自动打开
   * @param DescFile String
   * @param config ServletConfig
   * @param request HttpServletRequest
   * @param response HttpServletResponse
   * @throws Exception
   */
  public static void DownLoad(String SrcFile, String ContentType,
                              String DescFile, boolean autoOpen,ServletConfig config,
                              HttpServletRequest request,
                              HttpServletResponse response) throws Exception {
    try {
      logWriter.Info("开始下载文件 " + SrcFile);
      com.jspsmart.upload.SmartUpload mySmartUpload = new com.jspsmart.upload.
          SmartUpload();
      mySmartUpload.initialize(config, request, response);
      //是否自动打开
      if (!autoOpen)
        mySmartUpload.setContentDisposition(null);
      mySmartUpload.downloadFile(SrcFile, ContentType,
                                 new String(DescFile.getBytes("GB2312"),
                                            "ISO8859_1"));
    }
    catch (Exception e) {

      if (e instanceof java.io.FileNotFoundException)
        throw e;

    }

  }

}