javascript
JSP上传组件
=============commons-fileupload ================
common-fileupload組件是apache的一個(gè)開源項(xiàng)目之一，可以從http://jakarta.apache.org/commons/fileupload/下載。該組件簡單易用，可實(shí)現(xiàn)一次上傳一個(gè)或多個(gè)文件，并可限制文件大小。
-下載后解壓zip包，將commons-fileupload-1.1.1.jar,和commons-io-1.2.jar復(fù)制到tomcat的webapps\你的webapp\WEB-INF\lib\下，如果目錄不存在請自建目錄。
新建一個(gè)servlet: FileUpload.java用于文件上傳：
package com.drp.util.servlet;
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;
public class FileUpload extends HttpServlet {
?private String uploadPath = ""; // 用于存放上傳文件的目錄
?
?private File tempPath = new File("D:\\Tomcat 5.5\\webapps\\drp1.2\\tempimages\\"); // 用于存放臨時(shí)文件的目錄
?public void doPost(HttpServletRequest req, HttpServletResponse res)
???throws ServletException, IOException {
??res.setContentType("text/html; charset=GB18030");
??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
??//允許設(shè)置內(nèi)存中存儲數(shù)據(jù)的門限，單位：字節(jié)
??factory.setSizeThreshold(4096);
??// the location for saving data that is larger than getSizeThreshold()
??//如果文件大小大于SizeThreshold，則保存到臨時(shí)目錄
??factory.setRepository(new File("D:\\Tomcat 5.5\\webapps\\drp1.2\\tempimages"));
??ServletFileUpload upload = new ServletFileUpload(factory);
??// maximum size before a FileUploadException will be thrown
??//最大上傳文件，單位：字節(jié)
??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();
???// 正則匹配，過濾路徑取文件名
???String regExp = ".+\\\\(.+)$";
???// 過濾掉的文件類型
???String[] errorType = { ".exe", ".com", ".cgi", ".asp" };
???Pattern p = Pattern.compile(regExp);
???String itemNo = "";//文件存放路徑
???while (iter.hasNext()) {
????FileItem item = (FileItem) iter.next();
????
????// 忽略其他不是文件域的所有表單信息
????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 {
???????// 保存上傳的文件到指定的目錄
???????// 在下文中上傳文件至數(shù)據(jù)庫時(shí)，將對這里改寫
???????? 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);
??}
?}
?public void init() throws ServletException {
??this.uploadPath = this.getServletConfig().getInitParameter("upload_path");//的到web.xml中的配置文件用于保存上傳文件，也可以在已開始定義的時(shí)候初始化，不過這樣可以通過改動配置文件來改動存放路徑，不用該代碼，增加了靈活性。
?}
}
web.xml中相應(yīng)的配置如下：
<servlet>
?
??????? <servlet-name>FileUpload</servlet-name>
??????? <servlet-class>com.drp.util.servlet.FileUpload</servlet-class>//注意路徑
?? <init-param>
?<param-name>upload_path</param-name>
?<param-value>D:\\Tomcat 5.5\\webapps\\drp1.2\\images\\item\\</param-value>//存放地址?? </init-param>
?</servlet>
? <servlet-mapping>
??? <servlet-name>FileUpload</servlet-name>
??? <url-pattern>/servlet/FileUpload</url-pattern>
?</servlet-mapping>
對應(yīng)的請求文件：
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
? <head>
??? <title>index.html</title>
??? <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
??? <meta http-equiv="description" content="this is my page">
??? <!--<link rel="stylesheet" type="text/css" href="./styles.css">-->
? </head>
? <body>
?? //注意action地址，還有enctype要寫成multipart/form-data，和method="POST"??? <form name="uploadform" method="POST" action="./servlet/FileUpload" ENCTYPE="multipart/form-data">
??????? <table border="1" width="450" cellpadding="4" cellspacing="2" bordercolor="#9BD7FF">
??????? <tr><td width="100%" colspan="2">
??????????????????????? 文件1：<input name="x" size="40" type="file">
??????? </td></tr>
??????? <tr><td width="100%" colspan="2">
??????????????????????? 文件2：<input name="y" size="40" type="file">
??????? </td></tr>
??????? <tr><td width="100%" colspan="2">
??????????????????????? 文件3：<input name="z" size="40" type="file">
??????? </td></tr>
??????? </table>
??????? <br/><br/>
??????? <table>
??????? <tr><td align="center"><input name="upload" type="submit" value="開始上傳"/></td></tr>
?????? </table>
</form>
? </body>
</html>
第二個(gè)組件SmartUpload
=================SmartUpload=================================================
SmartUpload.zip 下載地址： http://dev2dev.bea.com.cn/bbs/servlet/D2DServlet/download/121-20468-118409-1176/SmartUpload.zip
解壓后有6個(gè)主要文件：ServletUpload.java，SmartFile.java，SmartFiles.java，SmartRequest.java，SmartUpload.java，? SmartUploadException.java 將其放在你的javabeen目錄下，注意每個(gè)文件的包名和你的存放位置是否相否，
? 由于不能傳中文，根據(jù)網(wǎng)站上的介紹對其中的SmartUpload.java做修改添加toUtf8String(String s)方法：
? 改動后SmartUpload.java的全部代碼如下：紅色代表改動的部分：
package com.drp.upload;//寫你自己的包名
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.Vector;
import javax.servlet.ServletConfig;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import javax.servlet.jsp.JspWriter;
import javax.servlet.jsp.PageContext;
public class SmartUpload
{
??? protected byte m_binArray[];
??? protected HttpServletRequest m_request;
??? protected HttpServletResponse m_response;
??? protected ServletContext m_application;
??? private int m_totalBytes;
??? private int m_currentIndex;
??? private int m_startData;
??? private int m_endData;
??? private String m_boundary;
??? private long m_totalMaxFileSize;
??? private long m_maxFileSize;
??? private Vector m_deniedFilesList;
??? private Vector m_allowedFilesList;
??? private boolean m_denyPhysicalPath;
??? //private boolean m_forcePhysicalPath;
??? private String m_contentDisposition;
??? public static final int SAVE_AUTO = 0;
??? public static final int SAVE_VIRTUAL = 1;
??? public static final int SAVE_PHYSICAL = 2;
??? private SmartFiles m_files;
??? private SmartRequest m_formRequest;
??? public SmartUpload()
??? {
??????? m_totalBytes = 0;
??????? m_currentIndex = 0;
??????? m_startData = 0;
??????? m_endData = 0;
??????? m_boundary = ""; //new String();
??????? m_totalMaxFileSize = 0L;
??????? m_maxFileSize = 0L;
??????? m_deniedFilesList = new Vector();
??????? m_allowedFilesList = new Vector();
??????? m_denyPhysicalPath = false;
??????? //m_forcePhysicalPath = false;
??????? m_contentDisposition = ""; //new String();
??????? m_files = new SmartFiles();
??????? m_formRequest = new SmartRequest();
??? }
??? /**
???? * @deprecated Method init is deprecated
???? */
??? public final void init(ServletConfig servletconfig) throws ServletException
??? {
??????? m_application = servletconfig.getServletContext();
??? }
??? /**
???? * @deprecated Method service is deprecated
???? */
??? public void service(HttpServletRequest httpservletrequest,HttpServletResponse httpservletresponse) throws
ServletException,IOException
??? {
??????? m_request = httpservletrequest;
??????? m_response = httpservletresponse;
??? }
??? public final void initialize(ServletConfig servletconfig,HttpServletRequest
httpservletrequest,HttpServletResponse httpservletresponse) throws ServletException
??? {
??????? m_application = servletconfig.getServletContext();
??????? m_request = httpservletrequest;
??????? m_response = httpservletresponse;
??? }
??? public final void initialize(PageContext pagecontext) throws ServletException
??? {
??????? m_application = pagecontext.getServletContext();
??????? m_request = (HttpServletRequest)pagecontext.getRequest();
??????? m_response = (HttpServletResponse)pagecontext.getResponse();
??? }
??? /**
???? * @deprecated Method initialize is deprecated
???? */
??? public final void initialize(ServletContext servletcontext,HttpSession httpsession,HttpServletRequest
httpservletrequest,HttpServletResponse httpservletresponse,JspWriter jspwriter) throws ServletException
??? {
??????? m_application = servletcontext;
??????? m_request = httpservletrequest;
??????? m_response = httpservletresponse;
??? }
??? public void upload() throws ServletException,IOException,SmartUploadException
??? {
??????? int i = 0;
??????? //boolean flag = false;
??????? boolean flag1 = false;
??????? //boolean flag2 = false;
??????? long l = 0L;
??????? //String s = "";//new String();
??????? //String s2 = "";//new String();
??????? String s4 = ""; //new String();
??????? String s5 = ""; //new String();
??????? String s6 = ""; //new String();
??????? String s7 = ""; //new String();
??????? String s8 = ""; //new String();
??????? String s9 = ""; //new String();
??????? String s10 = ""; //new String();
??????? m_totalBytes = m_request.getContentLength();
??????? m_binArray = new byte[m_totalBytes];
??????? int j;
??????? for(;i < m_totalBytes;i += j)
??????? {
??????????? try
??????????? {
??????????????? m_request.getInputStream();
??????????????? j = m_request.getInputStream().read(m_binArray,i,m_totalBytes - i);
??????????? }
??????????? catch(Exception exception)
??????????? {
??????????????? throw new SmartUploadException("Unable to upload.");
??????????? }
??????? }
??????? for(;!flag1 && m_currentIndex < m_totalBytes;m_currentIndex++)
??????? {
??????????? if(m_binArray[m_currentIndex] == 13)
??????????? {
??????????????? flag1 = true;
??????????? }
??????????? else
??????????? {
??????????????? m_boundary = m_boundary + (char)m_binArray[m_currentIndex];
??????????? }
??????? }
??????? if(m_currentIndex == 1)
??????? {
??????????? return;
??????? }
??????? for(m_currentIndex++;m_currentIndex < m_totalBytes;m_currentIndex = m_currentIndex + 2)
??????? {
??????????? String s1 = getDataHeader();
??????????? m_currentIndex = m_currentIndex + 2;
??????????? boolean flag3 = s1.indexOf("filename") > 0;
??????????? String s3 = getDataFieldValue(s1,"name");
??????????? if(flag3)
??????????? {
??????????????? s6 = getDataFieldValue(s1,"filename");
??????????????? s4 = getFileName(s6);
??????????????? s5 = getFileExt(s4);
??????????????? s7 = getContentType(s1);
??????????????? s8 = getContentDisp(s1);
??????????????? s9 = getTypeMIME(s7);
??????????????? s10 = getSubTypeMIME(s7);
??????????? }
??????????? getDataSection();
??????????? if(flag3 && s4.length() > 0)
??????????? {
??????????????? if(m_deniedFilesList.contains(s5))
??????????????? {
??????????????????? throw new SecurityException("The extension of the file is denied to be uploaded (1015).");
??????????????? }
??????????????? if(!m_allowedFilesList.isEmpty() && !m_allowedFilesList.contains(s5))
??????????????? {
??????????????????? throw new SecurityException("The extension of the file is not allowed to be uploaded
(1010).");
??????????????? }
??????????????? if(m_maxFileSize > 0L && (long)((m_endData - m_startData) + 1) > m_maxFileSize)
??????????????? {
??????????????????? throw new SecurityException("Size exceeded for this file : " + s4 + " (1105).");
??????????????? }
??????????????? l += (m_endData - m_startData) + 1;
??????????????? if(m_totalMaxFileSize > 0L && l > m_totalMaxFileSize)
??????????????? {
??????????????????? throw new SecurityException("Total File Size exceeded (1110).");
??????????????? }
??????????? }
??????????? if(flag3)
??????????? {
??????????????? SmartFile file = new SmartFile();
??????????????? file.setParent(this);
??????????????? file.setFieldName(s3);
??????????????? file.setFileName(s4);
??????????????? file.setFileExt(s5);
??????????????? file.setFilePathName(s6);
??????????????? file.setIsMissing(s6.length() == 0);
??????????????? file.setContentType(s7);
??????????????? file.setContentDisp(s8);
??????????????? file.setTypeMIME(s9);
??????????????? file.setSubTypeMIME(s10);
??????????????? if(s7.indexOf("application/x-macbinary") > 0)
??????????????? {
??????????????????? m_startData = m_startData + 128;
??????????????? }
??????????????? file.setSize((m_endData - m_startData) + 1);
??????????????? file.setStartData(m_startData);
??????????????? file.setEndData(m_endData);
??????????????? m_files.addFile(file);
??????????? }
??????????? else
??????????? {
??????????????? String s11 = new String(m_binArray,m_startData,(m_endData - m_startData) + 1);
??????????????? m_formRequest.putParameter(s3,s11);
??????????? }
??????????? if((char)m_binArray[m_currentIndex + 1] == '-')
??????????? {
??????????????? break;
??????????? }
??????? }
??? }
??? public int save(String s) throws ServletException,IOException,SmartUploadException
??? {
??????? return save(s,0);
??? }
??? public int save(String s,int i) throws ServletException,IOException,SmartUploadException
??? {
??????? int j = 0;
??????? if(s == null)
??????? {
??????????? s = m_application.getRealPath("/");
??????????? //System.out.println("s == null,m_application.getRealPath:" + s);
??????? }
??????? if(s.indexOf("/") != -1)
??????? {
??????????? if(s.charAt(s.length() - 1) != '/')
??????????? {
??????????????? s = s + "/";
??????????????? //System.out.println("m_application.getRealPath::" + s);
??????????? }
??????? }
??????? else
??????? {
??????????? if(s.charAt(s.length() - 1) != '\\')
??????????? {
??????????????? s = s + "\\";
??????????????? //System.out.println("m_application.getRealPath" + s);
??????????? }
??????? }
??????? //System.out.println("m_application.getRealPath:::" + s);
??????? FileNames = new String[m_files.getCount()];
??????? for(int k = 0;k < m_files.getCount();k++)
??????? {
??????????? if(!m_files.getFile(k).isMissing())
??????????? {
??????????????? //System.out.println("s + m_files.getFile(k).getFileName():" + s + m_files.getFile
(k).getFileName());
??????????????? m_files.getFile(k).saveAs(s + m_files.getFile(k).getFileName(),i);
??????????????? FileNames[j] = s + m_files.getFile(k).getFileName();
??????????????? j++;
??????????? }
??????? }
??????? return j;
??? }
??? //Add
??? private String[] FileNames;
??? public String[] getFileNames()
??? {
??????? //Method may expose internal representation by returning array
??????? //Returning an array value stored in one of the object's fields exposes the internal representation of
the object.? For classes shared by other untrusted classes, this could potentially be a security issue.?
Returning a new copy of the array is better approach in many situations.
??????? String[] vFileNames = new String[FileNames.length];
??????? System.arraycopy(FileNames,0,vFileNames,0,FileNames.length);
??????? return vFileNames;
??? }
??? public int getSize()
??? {
??????? return m_totalBytes;
??? }
??? public byte getBinaryData(int i)
??? {
??????? byte byte0;
??????? try
??????? {
??????????? byte0 = m_binArray[i];
??????? }
??????? catch(Exception exception)
??????? {
??????????? throw new ArrayIndexOutOfBoundsException("Index out of range (1005).");
??????? }
??????? return byte0;
??? }
??? public SmartFiles getFiles()
??? {
??????? return m_files;
??? }
??? public SmartRequest getRequest()
??? {
??????? return m_formRequest;
??? }
??? public void downloadFile(String s) throws ServletException,IOException,SmartUploadException
??? {
??????? downloadFile(s,null,null);
??? }
?
??? public void downloadFile(String s,String s1) throws
ServletException,IOException,SmartUploadException,SmartUploadException
??? {
??????? downloadFile(s,s1,null);
??? }
??? public void downloadFile(String s,String s1,String s2) throws
ServletException,IOException,SmartUploadException
??? {
??????? downloadFile(s,s1,s2,65000);
??? }
?? public void downloadFile(String s, String s1, String s2, int i)
?throws ServletException, IOException, SmartUploadException
??? {
?if(s == null)
???? throw new IllegalArgumentException("File '" + s +
???? "' not found (1040).");
?if(s.equals(""))
???? throw new IllegalArgumentException("File '" + s +
???? "' not found (1040).");
?if(!isVirtual(s) && m_denyPhysicalPath)
???? throw new SecurityException("Physical path is denied (1035).");
?if(isVirtual(s))
???? s = m_application.getRealPath(s);
?java.io.File file = new java.io.File(s);
?FileInputStream fileinputstream = new FileInputStream(file);
?long l = file.length();
?boolean flag = false;
?int k = 0;
?byte abyte0[] = new byte[i];
?if(s1 == null)
???? m_response.setContentType("application/x-msdownload");
?else
?if(s1.length() == 0)
???? m_response.setContentType("application/x-msdownload");
?else
???? m_response.setContentType(s1);
?m_response.setContentLength((int)l);
?m_contentDisposition = m_contentDisposition != null ?
?m_contentDisposition : "attachment;";
?if(s2 == null)
???? m_response.setHeader("Content-Disposition",
???? m_contentDisposition + " filename=" +
???? toUtf8String(getFileName(s)));
?else
?if(s2.length() == 0)
???? m_response.setHeader("Content-Disposition",
???? m_contentDisposition);
?else
???? m_response.setHeader("Content-Disposition",?
???? m_contentDisposition + " filename=" + toUtf8String(s2));
?while((long)k < l)
?{
???? int j = fileinputstream.read(abyte0, 0, i);
???? k += j;
???? m_response.getOutputStream().write(abyte0, 0, j);
?}
?fileinputstream.close();
??? }
?public static String toUtf8String(String s) {
?StringBuffer sb = new StringBuffer();
?for (int i=0;i<s.length();i++) {
???? char c = s.charAt(i);
???? if (c >= 0 && c <= 255) {
??sb.append(c);
???? } else {
??byte[] b;
??try {
????? b = Character.toString(c).getBytes("utf-8");
??} catch (Exception ex) {
????? System.out.println(ex);
????? b = new byte[0];
??}
??for (int j = 0; j < b.length; j++) {
????? int k = b[j];
????? if (k < 0) k += 256;
????? sb.append("%" + Integer.toHexString(k).
????? toUpperCase());
??}
???? }
?}
?return sb.toString();
??? }
??? public void downloadField(ResultSet resultset,String s,String s1,String s2) throws
ServletException,IOException,SQLException
??? {
??????? if(resultset == null)
??????? {
??????????? throw new IllegalArgumentException("The RecordSet cannot be null (1045).");
??????? }
??????? if(s == null)
??????? {
??????????? throw new IllegalArgumentException("The columnName cannot be null (1050).");
??????? }
??????? if(s.length() == 0)
??????? {
??????????? throw new IllegalArgumentException("The columnName cannot be empty (1055).");
??????? }
??????? byte abyte0[] = resultset.getBytes(s);
??????? if(s1 == null)
??????? {
??????????? m_response.setContentType("application/x-msdownload");
??????? }
??????? else
??????? {
??????????? if(s1.length() == 0)
??????????? {
??????????????? m_response.setContentType("application/x-msdownload");
??????????? }
??????????? else
??????????? {
??????????????? m_response.setContentType(s1);
??????????? }
??????? }
??????? m_response.setContentLength(abyte0.length);
??????? if(s2 == null)
??????? {
??????????? m_response.setHeader("Content-Disposition","attachment;");
??????? }
??????? else
??????? {
??????????? if(s2.length() == 0)
??????????? {
??????????????? m_response.setHeader("Content-Disposition","attachment;");
??????????? }
??????????? else
??????????? {
??????????????? m_response.setHeader("Content-Disposition","attachment; filename=" + s2);
??????????? }
??????? }
??????? m_response.getOutputStream().write(abyte0,0,abyte0.length);
??? }
?
??? public void fieldToFile(ResultSet resultset,String s,String s1) throws
ServletException,IOException,SmartUploadException,SQLException
??? {
??????? try
??????? {
??????????? if(m_application.getRealPath(s1) != null)
??????????? {
??????????????? s1 = m_application.getRealPath(s1);
??????????? }
??????????? InputStream inputstream = resultset.getBinaryStream(s);
??????????? FileOutputStream fileoutputstream = new FileOutputStream(s1);
??????????? int i;
??????????? while((i = inputstream.read()) != -1)
??????????? {
??????????????? fileoutputstream.write(i);
??????????? }
??????????? fileoutputstream.close();
??????? }
??????? catch(Exception exception)
??????? {
??????????? throw new SmartUploadException("Unable to save file from the DataBase (1020).");
??????? }
??? }
??? private String getDataFieldValue(String s,String s1)
??? {
??????? String s2 = ""; // = new String();
??????? String s3 = ""; // = new String();
??????? int i = 0;
??????? //boolean flag = false;
??????? //boolean flag1 = false;
??????? //boolean flag2 = false;
??????? s2 = s1 + "=" + '"';
??????? i = s.indexOf(s2);
??????? if(i > 0)
??????? {
??????????? int j = i + s2.length();
??????????? int k = j;
??????????? s2 = "\"";
??????????? int l = s.indexOf(s2,j);
??????????? if(k > 0 && l > 0)
??????????? {
??????????????? s3 = s.substring(k,l);
??????????? }
??????? }
??????? return s3;
??? }
??? private String getFileExt(String s)
??? {
??????? String s1; // = new String();
??????? int i = 0;
??????? int j = 0;
??????? if(s == null)
??????? {
??????????? return null;
??????? }
??????? i = s.lastIndexOf('.') + 1;
??????? j = s.length();
??????? s1 = s.substring(i,j);
??????? if(s.lastIndexOf('.') > 0)
??????? {
??????????? return s1;
??????? }
??????? else
??????? {
??????????? return "";
??????? }
??? }
??? private String getContentType(String s)
??? {
??????? String s1 = ""; // = new String();
??????? String s2 = ""; // = new String();
??????? int i = 0;
??????? //boolean flag = false;
??????? s1 = "Content-Type:";
??????? i = s.indexOf(s1) + s1.length();
??????? if(i != -1)
??????? {
??????????? int j = s.length();
??????????? s2 = s.substring(i,j);
??????? }
??????? return s2;
??? }
??? private String getTypeMIME(String s)
??? {
??????? //String s1 = new String();
??????? int i = 0;
??????? i = s.indexOf("/");
??????? if(i != -1)
??????? {
??????????? return s.substring(1,i);
??????? }
??????? else
??????? {
??????????? return s;
??????? }
??? }
??? private String getSubTypeMIME(String s)
??? {
??????? //String s1 = new String();
??????? //boolean flag = false;
??????? int i = 0;
??????? i = s.indexOf("/") + 1;
??????? if(i != -1)
??????? {
??????????? int j = s.length();
??????????? return s.substring(i,j);
??????? }
??????? else
??????? {
??????????? return s;
??????? }
??? }
??? private String getContentDisp(String s)
??? {
??????? //String s1 = new String();
??????? String s1 = "";
??????? int i = 0;
??????? int j = 0;
??????? i = s.indexOf(":") + 1;
??????? j = s.indexOf(";");
??????? s1 = s.substring(i,j);
??????? return s1;
??? }
??? private void getDataSection()
??? {
??????? //boolean flag = false;
??????? //String s = "";
??????? //String s = new String();
??????? int i = m_currentIndex;
??????? int j = 0;
??????? int k = m_boundary.length();
??????? m_startData = m_currentIndex;
??????? m_endData = 0;
??????? while(i < m_totalBytes)
??????? {
??????????? if(m_binArray[i] == (byte)m_boundary.charAt(j))
??????????? {
??????????????? if(j == k - 1)
??????????????? {
??????????????????? m_endData = ((i - k) + 1) - 3;
??????????????????? break;
??????????????? }
??????????????? i++;
??????????????? j++;
??????????? }
??????????? else
??????????? {
??????????????? i++;
??????????????? j = 0;
??????????? }
??????? }
??????? m_currentIndex = m_endData + k + 3;
??? }
??? private String getDataHeader()
??? {
??????? //boolean flag = false;
??????? int i = m_currentIndex;
??????? int j = 0;
??????? for(boolean flag1 = false;!flag1;)
??????? {
??????????? if(m_binArray[m_currentIndex] == 13 && m_binArray[m_currentIndex + 2] == 13)
??????????? {
??????????????? flag1 = true;
??????????????? j = m_currentIndex - 1;
??????????????? m_currentIndex = m_currentIndex + 2;
??????????? }
??????????? else
??????????? {
??????????????? m_currentIndex++;
??????????? }
??????? }
??????? String s = new String(m_binArray,i,(j - i) + 1);
??????? return s;
??? }
??? private String getFileName(String s)
??? {
??????? //String s1 = ""; // = new String();
??????? //String s2 = ""; // = new String();
??????? //boolean flag = false;
??????? //boolean flag1 = false;
??????? //boolean flag2 = false;
??????? int i = 0;
??????? i = s.lastIndexOf('/');
??????? if(i != -1)
??????? {
??????????? return s.substring(i + 1,s.length());
??????? }
??????? i = s.lastIndexOf('\\');
??????? if(i != -1)
??????? {
??????????? return s.substring(i + 1,s.length());
??????? }
??????? else
??????? {
??????????? return s;
??????? }
??? }
??? public void setDeniedFilesList(String s) throws ServletException,IOException,SQLException
??? {
??????? //String s1 = "";
??????? if(s != null)
??????? {
??????????? String s2 = "";
??????????? for(int i = 0;i < s.length();i++)
??????????? {
??????????????? if(s.charAt(i) == ',')
??????????????? {
??????????????????? if(!m_deniedFilesList.contains(s2))
??????????????????? {
??????????????????????? m_deniedFilesList.addElement(s2);
??????????????????? }
??????????????????? s2 = "";
??????????????? }
??????????????? else
??????????????? {
??????????????????? s2 = s2 + s.charAt(i);
??????????????? }
??????????? }
??????????? //if(s2 != "")
??????????? if(!s2.equals(""))
??????????? {
??????????????? m_deniedFilesList.addElement(s2);
??????????? }
??????? }
??????? else
??????? {
??????????? m_deniedFilesList = null;
??????? }
??? }
??? public void setAllowedFilesList(String s)
??? {
??????? //String s1 = "";
??????? if(s != null)
??????? {
??????????? String s2 = "";
??????????? for(int i = 0;i < s.length();i++)
??????????? {
??????????????? if(s.charAt(i) == ',')
??????????????? {
??????????????????? if(!m_allowedFilesList.contains(s2))
??????????????????? {
??????????????????????? m_allowedFilesList.addElement(s2);
??????????????????? }
??????????????????? s2 = "";
??????????????? }
??????????????? else
??????????????? {
??????????????????? s2 = s2 + s.charAt(i);
??????????????? }
??????????? }
??????????? //if(s2 != "")
??????????? if(!s2.equals(""))
??????????? {
??????????????? m_allowedFilesList.addElement(s2);
??????????? }
??????? }
??????? else
??????? {
??????????? m_allowedFilesList = null;
??????? }
??? }
??? public void setDenyPhysicalPath(boolean flag)
??? {
??????? m_denyPhysicalPath = flag;
??? }
??? public void setForcePhysicalPath(boolean flag)
??? {
??????? //m_forcePhysicalPath = flag;
??? }
??? public void setContentDisposition(String s)
??? {
??????? m_contentDisposition = s;
??? }
??? public void setTotalMaxFileSize(long l)
??? {
??????? m_totalMaxFileSize = l;
??? }
??? public void setMaxFileSize(long l)
??? {
??????? m_maxFileSize = l;
??? }
??? protected String getPhysicalPath(String s,int i) throws IOException
??? {
??????? String s1 = ""; //new String();
??????? String s2 = ""; //new String();
??????? String s3 = ""; //new String();
??????? boolean flag = false;
??????? s3 = System.getProperty("file.separator");
??????? if(s == null)
??????? {
??????????? throw new IllegalArgumentException("There is no specified destination file (1140).");
??????? }
??????? if(s.equals(""))
??????? {
??????????? throw new IllegalArgumentException("There is no specified destination file (1140).");
??????? }
??????? if(s.lastIndexOf("\\") >= 0)
??????? {
??????????? s1 = s.substring(0,s.lastIndexOf("\\"));
??????????? s2 = s.substring(s.lastIndexOf("\\") + 1);
??????? }
??????? if(s.lastIndexOf("/") >= 0)
??????? {
??????????? s1 = s.substring(0,s.lastIndexOf("/"));
??????????? s2 = s.substring(s.lastIndexOf("/") + 1);
??????? }
??????? s1 = s1.length() != 0 ? s1 : "/";
??????? java.io.File file = new java.io.File(s1);
??????? if(file.exists())
??????? {
??????????? flag = true;
??????? }
??????? if(i == 0)
??????? {
??????????? if(isVirtual(s1))
??????????? {
??????????????? s1 = m_application.getRealPath(s1);
??????????????? if(s1.endsWith(s3))
??????????????? {
??????????????????? s1 = s1 + s2;
??????????????? }
??????????????? else
??????????????? {
??????????????????? s1 = s1 + s3 + s2;
??????????????? }
??????????????? return s1;
??????????? }
??????????? if(flag)
??????????? {
??????????????? if(m_denyPhysicalPath)
??????????????? {
??????????????????? throw new IllegalArgumentException("Physical path is denied (1125).");
??????????????? }
??????????????? else
??????????????? {
??????????????????? return s;
??????????????? }
??????????? }
??????????? else
??????????? {
??????????????? throw new IllegalArgumentException("This path does not exist (1135).");
??????????? }
??????? }
??????? if(i == 1)
??????? {
??????????? if(isVirtual(s1))
??????????? {
??????????????? s1 = m_application.getRealPath(s1);
??????????????? if(s1.endsWith(s3))
??????????????? {
??????????????????? s1 = s1 + s2;
??????????????? }
??????????????? else
??????????????? {
??????????????????? s1 = s1 + s3 + s2;
??????????????? }
??????????????? return s1;
??????????? }
??????????? if(flag)
??????????? {
??????????????? throw new IllegalArgumentException("The path is not a virtual path.");
??????????? }
??????????? else
??????????? {
??????????????? throw new IllegalArgumentException("This path does not exist (1135).");
??????????? }
??????? }
??????? if(i == 2)
??????? {
??????????? if(flag)
??????????? {
??????????????? if(m_denyPhysicalPath)
??????????????? {
??????????????????? throw new IllegalArgumentException("Physical path is denied (1125).");
??????????????? }
??????????????? else
??????????????? {
??????????????????? return s;
??????????????? }
??????????? }
??????????? if(isVirtual(s1))
??????????? {
??????????????? throw new IllegalArgumentException("The path is not a physical path.");
??????????? }
??????????? else
??????????? {
??????????????? throw new IllegalArgumentException("This path does not exist (1135).");
??????????? }
??????? }
??????? else
??????? {
??????????? return null;
??????? }
??? }
??? public void uploadInFile(String s) throws IOException,SmartUploadException
??? {
??????? //boolean flag = false;
??????? int i = 0;
??????? int j = 0;
??????? if(s == null)
??????? {
??????????? throw new IllegalArgumentException("There is no specified destination file (1025).");
??????? }
??????? if(s.length() == 0)
??????? {
??????????? throw new IllegalArgumentException("There is no specified destination file (1025).");
??????? }
??????? if(!isVirtual(s) && m_denyPhysicalPath)
??????? {
??????????? throw new SecurityException("Physical path is denied (1035).");
??????? }
??????? i = m_request.getContentLength();
??????? m_binArray = new byte[i];
??????? int k;
??????? for(;j < i;j += k)
??????? {
??????????? try
??????????? {
??????????????? k = m_request.getInputStream().read(m_binArray,j,i - j);
??????????? }
??????????? catch(Exception exception)
??????????? {
??????????????? throw new SmartUploadException("Unable to upload.");
??????????? }
??????? }
??????? if(isVirtual(s))
??????? {
??????????? s = m_application.getRealPath(s);
??????? }
??????? try
??????? {
??????????? java.io.File file = new java.io.File(s);
??????????? FileOutputStream fileoutputstream = new FileOutputStream(file);
??????????? fileoutputstream.write(m_binArray);
??????????? fileoutputstream.close();
??????? }
??????? catch(Exception exception1)
??????? {
??????????? throw new SmartUploadException("The Form cannot be saved in the specified file (1030).");
??????? }
??? }
??? private boolean isVirtual(String s)
??? {
??????? if(m_application.getRealPath(s) != null)
??????? {
??????????? java.io.File file = new java.io.File(m_application.getRealPath(s));
??????????? return file.exists();
??????? }
??????? else
??????? {
??????????? return false;
??????? }
??? }
}
下面是上傳的應(yīng)用：
首先是一個(gè)請求頁面：
upload.html
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>文件上傳</title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
</head>
<body>
<p> </p>
<p align="center">上傳資源</p>
<FORM METHOD="POST" ACTION="do_upload.jsp"
ENCTYPE="multipart/form-data">
? <table width="75%" border="1" align="center">
??? <tr>
????? <td><div align="center">1、
????????? <input type="FILE" name="FILE1" size="30">
??????? </div></td>
??? </tr>
????? <td><div align="center">
????????? <input type="submit" name="Submit" value="上傳">
??????? </div></td>
??? </tr>
? </table>
</FORM>
</body>
</html>
然后是處理頁面：do_upload.jsp
<%@ page contentType="text/html; charset=gb2312" language="java"
import="java.util.*,com.drp.upload.*" errorPage="" %>//注意包名
<html>
<head>
<title>文件上傳處理頁面</title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
</head>
<body>
<%
?// 新建一個(gè)SmartUpload對象
?SmartUpload su = new SmartUpload();
?// 上傳初始化
?su.initialize(pageContext);
?// 設(shè)定上傳限制
?// 1.限制每個(gè)上傳文件的最大長度。
?// su.setMaxFileSize(10000);
?// 2.限制總上傳數(shù)據(jù)的長度。
?// su.setTotalMaxFileSize(20000);
?// 3.設(shè)定允許上傳的文件（通過擴(kuò)展名限制）,僅允許doc,txt文件。
?// su.setAllowedFilesList("doc,txt");
?// 4.設(shè)定禁止上傳的文件（通過擴(kuò)展名限制）,禁止上傳帶有exe,bat,
?//jsp,htm,html擴(kuò)展名的文件和沒有擴(kuò)展名的文件。
?// su.setDeniedFilesList("exe,bat,jsp,htm,html");
?//?上傳文件
?su.upload();
?// 將上傳文件全部保存到指定目錄
?int count = su.save("/upload");
?out.println(count+"個(gè)文件上傳成功！<br>");
?
?
?// 逐一提取上傳文件信息，同時(shí)可保存文件。
?for (int i=0;i<su.getFiles().getCount();i++)
?{
??SmartFile file = su.getFiles().getFile(i);
??
??// 若文件不存在則繼續(xù)
??if (file.isMissing()) continue;
??// 顯示當(dāng)前文件信息
??out.println("<TABLE BORDER=1>");
??out.println("<TR><TD>表單項(xiàng)名（FieldName）</TD><TD>"
??+ file.getFieldName() + "</TD></TR>");
??out.println("<TR><TD>文件長度（Size）</TD><TD>" +
??file.getSize() + "</TD></TR>");
??out.println("<TR><TD>文件名（FileName）</TD><TD>"
??+ file.getFileName() + "</TD></TR>");
??out.println("<TR><TD>文件擴(kuò)展名（FileExt）</TD><TD>"
??+ file.getFileExt() + "</TD></TR>");
??out.println("<TR><TD>文件全名（FilePathName）</TD><TD>"
??+ file.getFilePathName() + "</TD></TR>");
??out.println("</TABLE><BR>");
??// 將文件另存
??// file.saveAs("/upload/" + myFile.getFileName());
??// 另存到以WEB應(yīng)用程序的根目錄為文件根目錄的目錄下
??// file.saveAs("/upload/" + myFile.getFileName(),
??? //su.SAVE_VIRTUAL);
??// 另存到操作系統(tǒng)的根目錄為文件根目錄的目錄下
??// file.saveAs("c:\\temp\\" + myFile.getFileName(),
??//su.SAVE_PHYSICAL);
?}
%>
</body>
</html>
下載：
請求頁面：download.html
<html>
<head>
<title>下載</title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
</head>
<body>
<form action="do_download.jsp" method="post" name="form1" >
? <table width="400" border="1" align="center">
??? <tr>
????? <td><div align="center">文件下載</div></td>
??? </tr>
??? <tr>
????? <td><div align="center">選擇文件：
????????? <input name="file" type="file" size="25">
????? </div></td>
??? </tr>
??? <tr>
????? <td><div align="center">
??????? <input type="submit" name="Submit" value="提交">
??????? <input type="reset" name="Submit" value="重置">
????? </div></td>
??? </tr>
? </table>
</form>
</body>
</html>
處理頁面：do_download.jsp
<%@ page language="java" contentType="text/html; charset=gbk" import="java.util.*,com.drp.upload.*"
? pageEncoding="gbk"%>
<% request.setCharacterEncoding("gbk"); %>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<meta http-equiv="Content-Type" content="text/html; charset=gbk">
<title>Insert title here</title>
<%
response.setCharacterEncoding("gbk");
String finame = request.getParameter("file");
??// 新建一個(gè)SmartUpload對象
?SmartUpload su = new SmartUpload();
??// 初始化
?su.initialize(pageContext);
??// 設(shè)定contentDisposition為null以禁止瀏覽器自動打開文件，
??//保證點(diǎn)擊鏈接后是下載文件。若不設(shè)定，則下載的文件擴(kuò)展名為
??//doc時(shí)，瀏覽器將自動用word打開它。擴(kuò)展名為pdf時(shí)，
??//瀏覽器將用acrobat打開。
?su.setContentDisposition(null);
??// 下載文件
?su.downloadFile(finame);
%>
轉(zhuǎn)載于:https://www.cnblogs.com/kentyshang/archive/2008/07/02/1234216.html
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