且随疾风前行通过本文主要向大家介绍了uploadify 实例,uploadify 文件类型,uploadify多文件上传,uploadify上传文件,uploadify上传大文件等相关知识,希望对您有所帮助,也希望大家支持linkedu.com www.linkedu.com
前言
java+javascript，没用上数据库，做了一个简简单单的jsp上传小功能，就是记录一下，对于这个小项目有什么建议，欢迎指出不足之处 (-_+)
PS:从我的包名看得出，我用过很多前辈们的代码，基本上都是东凑西拼，各个部分代码的出处就不一一列出了，能看就行！
运行环境：
Java EE + Tomcat 7.0
项目结构
( Dynamic Web Project )
src各部分代码
1. com.bijian.study.Upload.java
package com.bijian.study;
import java.io.File;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Iterator;
import java.util.List;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.commons.fileupload.FileItem;
import org.apache.commons.fileupload.FileUploadException;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;
import com.test.util.FileUtil;
@SuppressWarnings("serial")
public class Upload extends HttpServlet {
private final String SEP = File.separator;
private FileUtil fUtil = new FileUtil();
@SuppressWarnings("unchecked")
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
String savePath = this.getServletConfig().getServletContext()
.getRealPath("");
savePath = savePath + "/uploads/";
File f1 = new File(savePath);
System.out.println(savePath);
if (!f1.exists()) {
f1.mkdirs();
}
DiskFileItemFactory fac = new DiskFileItemFactory();
ServletFileUpload upload = new ServletFileUpload(fac);
upload.setHeaderEncoding("utf-8");
String package_path = request.getParameter("save_path");
String remark = request.getParameter("remark");
List fileList = null;
try {
fileList = upload.parseRequest(request);
} catch (FileUploadException ex) {
return;
}
Iterator<FileItem> it = fileList.iterator();
String name = "";
String extName = "";
String sysDate = "";
String fileFrom = "";
while (it.hasNext()) {
FileItem item = it.next();
if (!item.isFormField()) {
long size = item.getSize();
String type = item.getContentType();
name = item.getName();
if (name == null || name.trim().equals("")) {
continue;
}
if (name.lastIndexOf(".") >= 0) {
extName = name.substring(name.lastIndexOf("."));
}
File file = null;
do {
file = new File(savePath + name + extName);
} while (file.exists());
File saveFile = new File(savePath + name);
fileFrom = saveFile.getAbsolutePath();
Date now = new Date();
SimpleDateFormat dateFormat = new SimpleDateFormat(
"yyyy/MM/dd HH:mm:ss");
sysDate = dateFormat.format(now);
try {
item.write(saveFile);
} catch (Exception e) {
e.printStackTrace();
}
}
}
remark = ChangeDeocode(remark);
package_path = ChangeDeocode(package_path);
String keep_path = "C:" +SEP+ package_path+SEP+name;
String save_path = "C:" +SEP+ package_path;
if(!fUtil.isFileExist(save_path)){
fUtil.mkDir("C:" +SEP+ package_path);
}
fUtil.copyFile(fileFrom, keep_path);
if(fUtil.isFileExist(keep_path)){
fUtil.appendMethod(name + "|" + sysDate + "|" + remark+"|"+save_path);
}
response.getWriter().print(name + "\\" + sysDate + "\\" + remark);
}
public String ChangeDeocode(final String dataStr) {
String ToDeocode = "";
if (dataStr.contains("%")) {
char[] charArray = dataStr.toCharArray();
int ToChangeIndex = 0;
for (int i = 0; i < charArray.length; i++) {
if (i <= ToChangeIndex && i != 0) {
continue;
} else {
if (charArray[i] == '%' && charArray[i + 1] == 'u'
&& i + 5 < charArray.length) {
char[] tempArray = new char[] { charArray[i],
charArray[i + 1], charArray[i + 2],
charArray[i + 3], charArray[i + 4],
charArray[i + 5] };
ToDeocode += decodeUnicode(String.valueOf(tempArray));
ToChangeIndex = i + 5;
} else {
ToDeocode += charArray[i];
continue;
}
}
}
}
return ToDeocode;
}
public String decodeUnicode(final String dataStr) {
int start = 0;
int end = 0;
final StringBuffer buffer = new StringBuffer();
while (start > -1) {
end = dataStr.indexOf("\\u", start + 2);
String charStr = "";
if (end == -1) {
charStr = dataStr.substring(start + 2, dataStr.length());
} else {
charStr = dataStr.substring(start + 2, end);
}
char letter = (char) Integer.parseInt(charStr, 16); // 16进制parse整形字符串。
buffer.append(new Character(letter).toString());
start = end;
}
return buffer.toString();
}
}
</div>
2. com.test.tag.MyIteratorTag.java
package com.test.tag;
import java.io.File;
import java.io.IOException;
import java.util.List;
import javax.servlet.jsp.JspException;
import javax.servlet.jsp.JspWriter;
import javax.servlet.jsp.tagext.TagSupport;
public class MyIteratorTag extends TagSupport {
private final String SEP = File.separator;
private List<String[]> files = null;
private List<String[]> data = null;
private int columnSize = 0;
@Override
public int doStartTag() throws JspException {
// TODO Auto-generated method stub
JspWriter out = this.pageContext.getOut();
StringBuffer sf = new StringBuffer();
sf.append("<table style='width:1000;' border='1' cellspacing='0' cellpadding='10'>");
sf.append("<tr><td>");
sf.append("<table style='width:200;' border='0' cellspacing='0'>");
if (this.data == null || this.data.isEmpty()) {
sf.append(" <tr>");
sf.append(" <td>");
sf.append(" <B> No Valid Data List is NULL </B> ");
sf.append(" </td>");
sf.append(" </tr>");
} else {
for (int i = 0; i < data.size(); i++) {
String[] trs = data.get(i);
sf.append("<tr>");
for (int j = 0; j < trs.length; j++) {
switch (j) {
case 0:
sf.append("<td>");
sf.append("<a href='javascript:ReStartJSP("+i+")'>"+trs[j]+"</a>");
sf.append("<input type='hidden' value='"+trs[j]+"' id='hidden_"+i+"'/>");
sf.append("</td>");
break;
case 1:
sf.append("<td>");
sf.append("\t"+trs[j]);
sf.append("</td>");
break;
case 2:
sf.append("<td>");
sf.append("張");
sf.append("</td>");
break;
case 3:
sf.append("<td>");
sf.append("<input type='image' value='"+i+"' src='img"+SEP+"exchange_icon.png' onclick='showDIV(this)'/>");
sf.append("</td>");
break;
default:
sf.append("<td>");