在網上看到許多上傳文件的例子,可是都是jsp程序,每碰到需要文件上傳的地方就要復制這段上傳代碼并做相應修改,維護起來極不方便。為了增強代碼的可重用性,我將這段通用的上傳程序寫成了javaBean,請大家多提意見。
首先, 下載 commons-fileupload-1.0.zip 和 commons-beanutils-1.7.0.zip,
http://apache.freelamp.com/jakarta/commons/fileupload/binaries/commons-fileupload-1.0.zip
http://apache.freelamp.com/jakarta/commons/beanutils/binaries/commons-beanutils-1.7.0.zip
解壓縮得到 commons-fileupload-1.0-beta-1.jar 和commons-beanutils.jar, 并將兩個包放到 "YourWebApp/WEB-INF/lib"文件夾下。
UploadFile.java
package com.esurfer.common;
import javax.servlet.http.HttpServletRequest;
import java.util.*;
import java.text.SimpleDateFormat;
import java.io.*;
import org.apache.commons.fileupload.*;public class UploadFile {
PRivate String tmpdir;
private String updir;
private HttpServletRequest request;
public HttpServletRequest getRequest() {
return request;
}public void setRequest(HttpServletRequest request) {
this.request = request;
}
public String getTmpdir() {
return tmpdir;
}public void setTmpdir(String string) {
tmpdir = string;
}
public String getUpdir() {
return updir;
}public void setUpdir(String string) {
updir = string;
}
/**
* Create Directory with the name 'path'
* @param path
* @return
*/
private String MkDir(String path) {
String msg = null;
java.io.File dir;// Create new file object
dir = new java.io.File(path);
if (dir == null) {
msg = "Error:<BR>Can't create empty directory!";
return msg;
}
if (dir.isFile()) {
msg = "Error:<BR>File name <B>" + dir.getAbsolutePath() +
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