套用的别人的模版,可是我这总抛io.exception,上传失败,
请各位帮帮忙,看一下这个程序。感激不尽!你们应该清楚。
import java.io.IOException;
import java.io.PrintWriter;import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;import org.apache.commons.fileupload.*;
import java.util.*;
import java.util.regex.*;
import java.io.*;
import org.apache.commons.fileupload.servlet.*;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;/*
* 创建日期 2005-4-10
*
* TODO 要更改此生成的文件的模板,请转至
* 窗口 - 首选项 - Java - 代码样式 - 代码模板
*//**
* @author gaolong1
*
* TODO 要更改此生成的类型注释的模板,请转至
* 窗口 - 首选项 - Java - 代码样式 - 代码模板
*/
public class FileUpload extends HttpServlet { /**
* Destruction of the servlet. <br>
*/
private String uploadPath = "D:\\addnetFile\\"; // 用于存放上传文件的目录
private File tempPath =new File("D:\\addnetFile\\tmp\\"); // 用于存放临时文件的目录
public void destroy() {
super.destroy(); // Just puts "destroy" string in log
// Put your code here
} /**
* The doPost method of the servlet. <br>
*
* This method is called when a form has its tag value method equals to post.
*
* @param request the request send by the client to the server
* @param response the response send by the server to the client
* @throws ServletException if an error occurred
* @throws IOException if an error occurred
*/
public void doPost(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException{
res.setContentType( "text/html; charset=GB2312");
PrintWriter out=res.getWriter();
System.out.println(req.getContentLength());
System.out.println(req.getContentType());
DiskFileItemFactory factory = new DiskFileItemFactory();
// maximum size that will be stored in memory
factory.setSizeThreshold(4096);
// the location for saving data that is larger than getSizeThreshold()
factory.setRepository(new File("d:\\File\\addnetFile\\temp")); ServletFileUpload upload = new ServletFileUpload(factory);
// maximum size before a FileUploadException will be thrown
upload.setSizeMax(1000000);
try{
List fileItems = upload.parseRequest(req);
// assume we know there are two files. The first file is a small
// text file, the second is unknown and is written to a file on
// the server
Iterator iter = fileItems.iterator();// 正则匹配,过滤路径取文件名
String regExp=".+\\\\(.+)$";// 过滤掉的文件类型
String[] errorType={".exe",".com",".cgi",".asp"};
Pattern p = Pattern.compile(regExp);
while (iter.hasNext()) {
FileItem item = (FileItem)iter.next();
//忽略其他不是文件域的所有表单信息
if (!item.isFormField()) {
String name = item.getName();
long size = item.getSize();
if((name==null||name.equals("")) && size==0)
continue;
Matcher m = p.matcher(name);
boolean result = m.find(); ---》 result 为FALSE,为什么?[/color]
if (result){
for (int temp=0;temp<errorType.length;temp++){
if (m.group(1).endsWith(errorType[temp])){
throw new IOException(name+": wrong type");
}
}
try{// 保存上传的文件到指定的目录// 在下文中上传文件至数据库时,将对这里改写
item.write(new File("d:\\" + m.group(1))); out.print(name+" "+size+"<br>");
}
catch(Exception e){
out.println(e);
} }
else
{
throw new IOException("fail to upload");
}
}
}
}
catch (IOException e){
out.println(e);
}
catch (FileUploadException e){
out.println(e);
}// 保存上传的文件到指定的目录// 在下文中上传文件至数据库时,将对这里改写 }
/**
* Initialization of the servlet. <br>
*
* @throws ServletException if an error occure
*/
public void init() throws ServletException {
// Put your code here
}}
请各位帮帮忙,看一下这个程序。感激不尽!你们应该清楚。
import java.io.IOException;
import java.io.PrintWriter;import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;import org.apache.commons.fileupload.*;
import java.util.*;
import java.util.regex.*;
import java.io.*;
import org.apache.commons.fileupload.servlet.*;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;/*
* 创建日期 2005-4-10
*
* TODO 要更改此生成的文件的模板,请转至
* 窗口 - 首选项 - Java - 代码样式 - 代码模板
*//**
* @author gaolong1
*
* TODO 要更改此生成的类型注释的模板,请转至
* 窗口 - 首选项 - Java - 代码样式 - 代码模板
*/
public class FileUpload extends HttpServlet { /**
* Destruction of the servlet. <br>
*/
private String uploadPath = "D:\\addnetFile\\"; // 用于存放上传文件的目录
private File tempPath =new File("D:\\addnetFile\\tmp\\"); // 用于存放临时文件的目录
public void destroy() {
super.destroy(); // Just puts "destroy" string in log
// Put your code here
} /**
* The doPost method of the servlet. <br>
*
* This method is called when a form has its tag value method equals to post.
*
* @param request the request send by the client to the server
* @param response the response send by the server to the client
* @throws ServletException if an error occurred
* @throws IOException if an error occurred
*/
public void doPost(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException{
res.setContentType( "text/html; charset=GB2312");
PrintWriter out=res.getWriter();
System.out.println(req.getContentLength());
System.out.println(req.getContentType());
DiskFileItemFactory factory = new DiskFileItemFactory();
// maximum size that will be stored in memory
factory.setSizeThreshold(4096);
// the location for saving data that is larger than getSizeThreshold()
factory.setRepository(new File("d:\\File\\addnetFile\\temp")); ServletFileUpload upload = new ServletFileUpload(factory);
// maximum size before a FileUploadException will be thrown
upload.setSizeMax(1000000);
try{
List fileItems = upload.parseRequest(req);
// assume we know there are two files. The first file is a small
// text file, the second is unknown and is written to a file on
// the server
Iterator iter = fileItems.iterator();// 正则匹配,过滤路径取文件名
String regExp=".+\\\\(.+)$";// 过滤掉的文件类型
String[] errorType={".exe",".com",".cgi",".asp"};
Pattern p = Pattern.compile(regExp);
while (iter.hasNext()) {
FileItem item = (FileItem)iter.next();
//忽略其他不是文件域的所有表单信息
if (!item.isFormField()) {
String name = item.getName();
long size = item.getSize();
if((name==null||name.equals("")) && size==0)
continue;
Matcher m = p.matcher(name);
boolean result = m.find(); ---》 result 为FALSE,为什么?[/color]
if (result){
for (int temp=0;temp<errorType.length;temp++){
if (m.group(1).endsWith(errorType[temp])){
throw new IOException(name+": wrong type");
}
}
try{// 保存上传的文件到指定的目录// 在下文中上传文件至数据库时,将对这里改写
item.write(new File("d:\\" + m.group(1))); out.print(name+" "+size+"<br>");
}
catch(Exception e){
out.println(e);
} }
else
{
throw new IOException("fail to upload");
}
}
}
}
catch (IOException e){
out.println(e);
}
catch (FileUploadException e){
out.println(e);
}// 保存上传的文件到指定的目录// 在下文中上传文件至数据库时,将对这里改写 }
/**
* Initialization of the servlet. <br>
*
* @throws ServletException if an error occure
*/
public void init() throws ServletException {
// Put your code here
}}
直接抛上去了。结果就是java.io.ioexception: fail to upload
这里得到的name是带全路径的文件名么?你的正则只能匹配全路径的情况。而且只支持windows文件格式。
如果不是全路径的文件名,或者非windows文件格式的,当然只能返回false了。你可以改一下正则表达式,或者换另外的方法获得文件名。
就匹配了一个 \ 后面跟任何东西都可以
路径中没有 \ 或者 \ 后没有任何东西
就false了
String fileType = fileName.substring(
fileName.lastIndexOf('.') + 1).toLowerCase();//得到.后面的文件扩展名
String fileType = fileName.substring(
fileName.lastIndexOf('.') + 1).toLowerCase();