📄 upload.jsp

📁 JSP+ORACLE网站开发实例（下）.rar
💻 JSP
字号:
<%@ page contentType="text/html; charset=GBK" %> 
<%@ page import="java.io.*"%> 
<%@ page import="java.util.*"%> 
<%@ page import="javax.servlet.*"%> 
<%@ page import="javax.servlet.http.*"%> 
<html><head><title>upFile</title></head> 
<body bgcolor="#ffffff"> 
<% 
//定义上载文件的最大字节 
int MAX_SIZE = 102400 * 102400; 
// 创建根路径的保存变量 
String rootPath; 
//声明文件读入类 
DataInputStream in = null; 
FileOutputStream fileOut = null; 
//取得客户端的网络地址 
String remoteAddr = request.getRemoteAddr(); 

//获得服务器的名字 
String serverName = request.getServerName(); 


//取得互联网程序的绝对地址 
String realPath = request.getRealPath(serverName); 

realPath = realPath.substring(0,realPath.lastIndexOf("\\")); 

//创建文件的保存目录
rootPath = realPath + "\\upfile\\"; 

//取得客户端上传的数据类型 
String contentType = request.getContentType(); 
try{ 
if(contentType.indexOf("multipart/form-data") >= 0){ 
//读入上传的数据 
in = new DataInputStream(request.getInputStream()); 
int formDataLength = request.getContentLength(); 
if(formDataLength > MAX_SIZE){ 
out.println("<P>上传的文件字节数不可以超过" + MAX_SIZE + "</p>"); 
return; 
} 
//保存上传文件的数据 
byte dataBytes[] = new byte[formDataLength]; 
int byteRead = 0; 
int totalBytesRead = 0; 
//上传的数据保存在byte数组 
while(totalBytesRead < formDataLength){ 
byteRead = in.read(dataBytes,totalBytesRead,formDataLength); 
totalBytesRead += byteRead; 
} 
//根据byte数组创建字符串 
String file = new String(dataBytes); 
//out.println(file); 
//取得上传的数据的文件名 
String saveFile = file.substring(file.indexOf("filename=\"") + 10); 
saveFile = saveFile.substring(0,saveFile.indexOf("\n")); 
saveFile = saveFile.substring(saveFile.lastIndexOf("\\") + 1,saveFile.indexOf("\"")); 
int lastIndex = contentType.lastIndexOf("="); 
//取得数据的分隔字符串 
String boundary = contentType.substring(lastIndex + 1,contentType.length()); 
//创建保存路径的文件名 
String fileName = rootPath + saveFile; 
//out.print(fileName); 
int pos; 
pos = file.indexOf("filename=\""); 
pos = file.indexOf("\n",pos) + 1; 
pos = file.indexOf("\n",pos) + 1; 
pos = file.indexOf("\n",pos) + 1; 
int boundaryLocation = file.indexOf(boundary,pos) - 4; 
//out.println(boundaryLocation); 
//取得文件数据的开始的位置 
int startPos = ((file.substring(0,pos)).getBytes()).length; 
//out.println(startPos); 
//取得文件数据的结束的位置 
int endPos = ((file.substring(0,boundaryLocation)).getBytes()).length; 
//out.println(endPos); 
//检查上载文件是否存在 
File checkFile = new File(fileName); 
if(checkFile.exists()){ 
out.println("<p>" + saveFile + "文件已经存在.</p>"); 
} 
//检查上载文件的目录是否存在 
File fileDir = new File(rootPath); 
if(!fileDir.exists()){ 
fileDir.mkdirs(); 
} 
//创建文件的写出类 
fileOut = new FileOutputStream(fileName); 
//保存文件的数据 
fileOut.write(dataBytes,startPos,(endPos - startPos)); 
fileOut.close(); 
//out.println("<P>upfiel/" + saveFile + "文件成功上载.</p>"); 
out.println("<SCRIPT>parent.myform.piccontent.value='"+saveFile+"'</SCRIPT>");
}else{ 
String content = request.getContentType(); 
out.println("<p>上传的数据类型不是是multipart/form-data</p>"); 
} 
}catch(Exception ex){ 
throw new ServletException(ex.getMessage()); 
} 
%> 
</body> 
</html>
⌨️ 快捷键说明

复制代码 Ctrl + C
搜索代码 Ctrl + F
全屏模式 F11
切换主题 Ctrl + Shift + D
显示快捷键 ?
增大字号 Ctrl + =
减小字号 Ctrl + -