JSP多个文件上传源代码程序

package mobile.server.file; import java.io.BufferedOutputStream; import java.io.File; import java.io.FileOutputStream; import java.io.IOException; import java.text.SimpleDateFormat; import java.util.ArrayList; import java.util.Date; import java.util.Hashtable; import javax.servlet.ServletInputStream; import javax.servlet.http.HttpServletRequest; //import org.apache.commons.el /* * vogoalAPI 1.0 * Auther SinNeR@blueidea.com * by vogoal.com * mail: vogoals@hotmail.com????????????R???h??R?????g */ /** * JSP上传文件类 * * @author zhangguihua * @version 1.0 */ public class JspFileUpload { /** request对象 */ private HttpServletRequest request = null; /** 上传文件的路径 */ private String uploadPath = null; /** 每次读取得字节的大小 */ private static int BUFSIZE = 1024 * 8; /** 存储参数的Hashtable */ private Hashtable paramHt = new Hashtable(); /** 存储上传的文件的文件名的ArrayList */ private ArrayList updFileArr = new ArrayList(); /** * 设定request对象。 * * @param request * HttpServletRequest request对象 */ public void setRequest(HttpServletRequest request) { this.request = request; } /** * 设定文件上传路径。 * * @param path * 用户指定的文件的上传路径。 */ public void setUploadPath(String path1) { this.uploadPath = path1; //System.out.println("0..."+path); } /** * 文件上传处理主程序。???????B * * @return int 操作结果 0 文件操作成功；1 request对象不存在。 2 没有设定文件保存路径或者文件保存路径不正确；3 * 没有设定正确的enctype；4 文件操作异常。 */ public int process() { int status = 0; // 文件上传前，对request对象，上传路径以及enctype进行check。 status = preCheck(); // 出错的时候返回错误代码。 if (status != 0) return status; try { // ??参数或者文件名?u?? String name = null; // 参数的value String value = null; // 读取的流是否为文件的标志位 boolean fileFlag = false; // 要存储的文件。 File tmpFile = null; // 上传的文件的名字 String fName = null; FileOutputStream baos = null; BufferedOutputStream bos = null; // ??存储参数的Hashtable paramHt = new Hashtable(); updFileArr = new ArrayList(); int rtnPos = 0; byte[] buffs = new byte[BUFSIZE * 8]; // ?取得ContentType String contentType = request.getContentType(); // System.out.println("0..."+contentType); int index = contentType.indexOf("boundary="); String boundary = "--" + contentType.substring(index + 9); String endBoundary = boundary + "--"; // ?从request对象中取得流。 ServletInputStream sis = request.getInputStream(); // 读取1行 while ((rtnPos = sis.readLine(buffs, 0, buffs.length)) != -1) { String strBuff = new String(buffs, 0, rtnPos); // System.out.println("2..."+strBuff); // 读取1行数据?n?? if (strBuff.startsWith(boundary)) { if (name != null && name.trim().length() > 0) { if (fileFlag) { bos.flush(); baos.close(); bos.close(); baos = null; bos = null; updFileArr.add(fName); } else { Object obj = paramHt.get(name); ArrayList al = new ArrayList(); if (obj != null) { al = (ArrayList) obj; } al.add(value); //System.out.println(value); paramHt.put(name, al); } } name = new String(); value = new String(); fileFlag = false; fName = new String(); rtnPos = sis.readLine(buffs, 0, buffs.length); if (rtnPos != -1) { strBuff = new String(buffs, 0, rtnPos); //System.out.println("1..."+strBuff); if (strBuff.toLowerCase().startsWith( "content-disposition: form-data; ")) { int nIndex = strBuff.toLowerCase().indexOf( "name=\""); int nLastIndex = strBuff.toLowerCase().indexOf( "\"", nIndex + 6); name = strBuff.substring(nIndex + 6, nLastIndex); } int fIndex = strBuff.toLowerCase().indexOf( "filename=\""); if (fIndex != -1) { // System.out.println("2...:"+fIndex); fileFlag = true; // System.out.println("3...:"+strBuff); int fLastIndex = strBuff.toLowerCase().indexOf( "\"", fIndex + 10); fName = strBuff.substring(fIndex + 10, fLastIndex); fName = getFileName(fName); // System.out.println("4...:"+fName); if (fName == null || fName.trim().length() == 0) { fileFlag = false; sis.readLine(buffs, 0, buffs.length); sis.readLine(buffs, 0, buffs.length); sis.readLine(buffs, 0, buffs.length); continue; }else{ fName = getFileNameByTime(fName); // System.out.println("5...:"+fName); sis.readLine(buffs, 0, buffs.length); // System.out.println("buffs1...:"+buffs); sis.readLine(buffs, 0, buffs.length); // System.out.println("buffs2...:"+buffs); } } } } else if (strBuff.startsWith(endBoundary)) { if (name != null && name.trim().length() > 0) { if (fileFlag) { bos.flush(); baos.close(); bos.close(); baos = null; bos = null; updFileArr.add(fName); } else { Object obj = paramHt.get(name); ArrayList al = new ArrayList(); if (obj != null) { al = (ArrayList) obj; } al.add(value); paramHt.put(name, al); } } } else { if (fileFlag) { if (baos == null && bos == null) { // System.out.println("6...:"+uploadPath + fName); tmpFile = new File(uploadPath + fName); baos = new FileOutputStream(tmpFile); bos = new BufferedOutputStream(baos); } bos.write(buffs, 0, rtnPos); baos.flush(); } else { // System.out.println("test :" + value + "--" + strBuff); value = value + strBuff; } } } } catch (IOException e) { status = 4; } return status; } private int preCheck() { int errCode = 0; if ( request == null ) return 1; if ( uploadPath == null || uploadPath.trim().length() == 0 ) return 2; else{ File tmpF = new File(uploadPath); if (!tmpF.exists()) return 2; } String contentType = request.getContentType(); if ( contentType.indexOf("multipart/form-data") == -1 ) return 3; return errCode; } public String getParameter(String name){ String value = ""; if ( name == null || name.trim().length() == 0 ) return value; value = (paramHt.get(name) == null)?"":(String)((ArrayList)paramHt.get(name)).get(0); return value; } public String[] getParameters(String name){ if ( name == null || name.trim().length() == 0 ) return null; if ( paramHt.get(name) == null ) return null; ArrayList al = (ArrayList)paramHt.get(name); String[] strArr = new String[al.size()]; for ( int i=0;i<al.size();i++ ) strArr[i] = (String)al.get(i); return strArr; } public int getUpdFileSize(){ return updFileArr.size(); } public String[] getUpdFileNames(){ String[] strArr = new String[updFileArr.size()]; for ( int i=0;i<updFileArr.size();i++ ) strArr[i] = (String)updFileArr.get(i); return strArr; } private String getFileName(String input){ int fIndex = input.lastIndexOf("\\"); if (fIndex == -1) { fIndex = input.lastIndexOf("/"); if (fIndex == -1) { return input; } } input = input.substring(fIndex + 1); return input; } private String getFileNameByTime(String input){ int index = input.indexOf("."); Date dt = new Date(); SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMddHHmmssSSS"); return input.substring(0,index) + sdf.format(dt) + input.substring(index); } }