基于本体的高校毕业生就业综合服务系统

package DownLoadFile.JspFileDownLoad; import java.io.BufferedInputStream; import java.io.File; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; import java.util.zip.ZipEntry; import java.util.zip.ZipOutputStream; import javax.servlet.http.HttpServletResponse; /** * JSP FILE DOWNLOAD SUPPORT * * @author yufangwen * @version 1.0 */ public class JspFileDownload { /** request object */ private HttpServletResponse response = null; /** file type: -1 un-setting; 0 normal file; 1 zip file ;2 stream*/ private int fileType = -1; /** file name to be displayed */ private String disFileName = null; /** zip file path */ private String zipFilePath = null; /** file to be zipped */ private String[] zipFileNames = null; private boolean zipDelFlag = false; /** file to be downloaded */ private String downFileName = null; /** error code 0 */ private static final int PROCESS_OK = 0; /** error code 1 */ private static final int RESPONSE_IS_NULL = 1; /** error code 2 */ private static final int UNSET_DOWNLOADTYPE = 2; /** error code 3 */ private static final int UNSET_DIS_FILE_NAME = 3; /** error code 4 */ private static final int UNSET_DOWN_FILE_NAME = 4; /** error code 9 */ private static final int IO_EXCEPTION = 9; /** * set response object * @param response response Object */ public void setResponse(HttpServletResponse response){ this.response = response; } /** * set file type 0 normal file; 1 zip file ;2 stream * @param fileType */ public void setDownType(int fileType){ this.fileType = fileType; } /** * set display file name * @param fileName */ public void setDisFileName(String fileName){ this.disFileName = fileName; } /** * set zip file path * @param fileNames */ public void setZipFilePath( String path ){ this.zipFilePath = path; } /** * set zip flag * @param b */ public void setZipDelFlag(boolean b){ this.zipDelFlag = b; } /** * set zip file names * @param fileNames */ public void setZipFileNames(String[] fileNames){ this.zipFileNames = fileNames; } /** * set download file name * @param fileName */ public void setDownFileName(String fileName){ this.downFileName = fileName; } /** * set file content * @param fileContent */ public int setFileContent(String fileContent){ try{ byte[] buffs = fileContent.getBytes("UTF-8"); response.getOutputStream().write(buffs); }catch(IOException e){ return IO_EXCEPTION; } return PROCESS_OK; } /** * set file content * @param fileContent */ public int setFileContent(byte[] fileContent){ try{ response.getOutputStream().write(fileContent); }catch(IOException e){ return IO_EXCEPTION; } return PROCESS_OK; } /** * set file content end * */ public int setFileContentEnd(){ try{ response.getOutputStream().close(); }catch(IOException e){ return IO_EXCEPTION; } return PROCESS_OK; } /** * main process * @return */ public int process(){ int status = PROCESS_OK; status = preCheck(); if ( status != PROCESS_OK ) return status; String fileName = disFileName; response.setContentType("APPLICATION/OCTET-STREAM"); response.setHeader("Content-Disposition","attachment;filename=\"" + fileName + "\""); int BUFSIZE = 1024 * 8; int rtnPos = 0; byte[] buffs = new byte[ BUFSIZE ]; FileInputStream inStream = null; ZipOutputStream zos = null; InputStream is = null; String filepath = null; try{ if ( fileType == 0 || fileType == 1){ if ( fileType == 0 ){ filepath = downFileName; }else{ filepath = zipFilePath + fileName; String[] fileToZip = zipFileNames; zos=new ZipOutputStream(new FileOutputStream(filepath)); ZipEntry ze=null; byte[] buf=new byte[BUFSIZE]; int readLen=0; for (int i= 0;i<fileToZip.length;i++){ File f= new File(fileToZip[i]); ze=new ZipEntry(f.getName()); ze.setSize(f.length()); ze.setTime(f.lastModified()); zos.putNextEntry(ze); is=new BufferedInputStream(new FileInputStream(f)); while ((readLen=is.read(buf, 0, BUFSIZE))!=-1) { zos.write(buf, 0, readLen); } is.close(); } zos.close(); } inStream =new FileInputStream(filepath); while((rtnPos=inStream.read(buffs)) >0) response.getOutputStream().write(buffs,0,rtnPos); response.getOutputStream().close(); inStream.close(); } if ( zipDelFlag ){ File fToDel = new File(filepath); fToDel.delete(); } }catch(IOException e){ return IO_EXCEPTION; }finally{ try{ if ( inStream != null ){ inStream.close(); inStream = null; } if ( zos != null ){ zos.close(); zos = null; } if ( is != null ){ is.close(); is = null; } }catch (IOException e){ } } return status; } /** * 预处理 * @return */ private int preCheck(){ if ( response == null ) return RESPONSE_IS_NULL; if ( disFileName == null || disFileName.trim().length() == 0 ) return UNSET_DIS_FILE_NAME; if ( fileType == -1 ) return UNSET_DOWNLOADTYPE; else if ( fileType == 0 ){ if ( downFileName == null || downFileName.trim().length() == 0 ) return UNSET_DOWN_FILE_NAME; else{ if ( !isFile( downFileName ) ) return UNSET_DOWN_FILE_NAME; } }else if ( fileType == 1 ){ if ( zipFilePath == null || zipFilePath.length() == 0 ) return UNSET_DOWN_FILE_NAME; else{ if ( !isDirect(zipFilePath) ) return UNSET_DOWN_FILE_NAME; } if ( zipFileNames == null || zipFileNames.length == 0 ) return UNSET_DOWN_FILE_NAME; else{ for ( int i=0;i<zipFileNames.length;i++ ){ if ( zipFileNames[i] == null || zipFileNames[i].trim().length() == 0 ) return UNSET_DOWN_FILE_NAME; else{ if ( !isFi