使用的是commons-fileupload-1.3和commons-io-2.4import 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;public class FileUpload extends HttpServlet {
public void destroy() {
super.destroy(); // Just puts "destroy" string in log
// Put your code here
}
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("e:\\temp"));
System.out.println("e:\\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();
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)));
System.out.println("d" );
out.print(name + " " + size + "<br>");
} catch (Exception e) {
e.printStackTrace();
out.println(e);
}
} else {
throw new IOException("fail to upload");
}
}
}
} catch (IOException e) {
e.printStackTrace();
out.println(e);
} catch (FileUploadException e) {
e.printStackTrace();
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 }
public void init() throws ServletException {
// Put your code here
}
}
错误提示:
java.io.IOException: fail to upload
at com.dxh.shopping.servlet.FileUpload.doPost(FileUpload.java:80)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:859)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
at java.lang.Thread.run(Thread.java:619)
import java.io.PrintWriter;import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;import org.apache.commons.fileupload.*;
import java.util.*;
import java.util.regex.*;
import java.io.*;
import org.apache.commons.fileupload.servlet.*;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;public class FileUpload extends HttpServlet {
public void destroy() {
super.destroy(); // Just puts "destroy" string in log
// Put your code here
}
public void doPost(HttpServletRequest req, HttpServletResponse res)
throws ServletException, IOException {
res.setContentType("text/html; charset=GB2312");
PrintWriter out = res.getWriter();
System.out.println(req.getContentLength());
System.out.println(req.getContentType());
DiskFileItemFactory factory = new DiskFileItemFactory();
// maximum size that will be stored in memory
factory.setSizeThreshold(4096);
// the location for saving data that is larger than getSizeThreshold()
factory.setRepository(new File("e:\\temp"));
System.out.println("e:\\temp");
ServletFileUpload upload = new ServletFileUpload(factory);
// maximum size before a FileUploadException will be thrown
upload.setSizeMax(1000000);
try {
List fileItems = upload.parseRequest(req);
// assume we know there are two files. The first file is a small
// text file, the second is unknown and is written to a file on
// the server
Iterator iter = fileItems.iterator(); // 正则匹配,过滤路径取文件名
String regExp = ".+\\\\(.+)$"; // 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();
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)));
System.out.println("d" );
out.print(name + " " + size + "<br>");
} catch (Exception e) {
e.printStackTrace();
out.println(e);
}
} else {
throw new IOException("fail to upload");
}
}
}
} catch (IOException e) {
e.printStackTrace();
out.println(e);
} catch (FileUploadException e) {
e.printStackTrace();
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 }
public void init() throws ServletException {
// Put your code here
}
}
错误提示:
java.io.IOException: fail to upload
at com.dxh.shopping.servlet.FileUpload.doPost(FileUpload.java:80)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:859)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
at java.lang.Thread.run(Thread.java:619)
package org.zhangming.load;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.io.*;
import org.apache.commons.fileupload.servlet.*;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;public class FileUpLoad2 extends HttpServlet {
public void destroy() {
super.destroy(); // Just puts "destroy" string in log
// Put your code here
}
@SuppressWarnings("unchecked")
public void doPost(HttpServletRequest req, HttpServletResponse res)
throws ServletException, IOException
{
res.setContentType("text/html; charset=GB2312");
PrintWriter out = res.getWriter();
DiskFileItemFactory factory = new DiskFileItemFactory();
factory.setSizeThreshold(4096*1024); // maximum size that will be stored in memory
factory.setRepository(new File("e:/temp")); // the location for saving data that is larger than getSizeThreshold()
ServletFileUpload upload = new ServletFileUpload(factory);
upload.setSizeMax(1000000); // maximum size before a FileUploadException will be thrown
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();
String filename = name.substring(name.lastIndexOf("\\") + 1);
long size = item.getSize();
if ((name == null || name.equals("")) && size == 0)
continue;
System.out.println("-----------");
// Matcher m = p.matcher(name);
// boolean result = m.find();
for (int temp = 0; temp < errorType.length; temp++)
{
if (filename.endsWith(errorType[temp]))
{
throw new IOException(name + ": wrong type");
}
else
{
// 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:\\",filename)); }
}
}
}
}
catch (Exception e)
{
e.printStackTrace();
out.println(e);
}
}
public void init() throws ServletException {
// Put your code here
}
}
间第62行String filename = name.substring(name.lastIndexOf("\\") + 1);对于你用boolean result = m.find();
if (result) {在匹配过程时,是一个文件一个文件进行的,这样你进行匹配时只能是一个文件所匹配的结果(而他只有一个),这样result就会是false。从而成生了上述现象。
建议楼主以后贴代码时,整理一下!!!