Java 文件上传的实例详解

Java 文件上传的实例详解

java 文件上传的实例详解

java 文件上传

Java文件上传,介绍几种常用的方法,也是经过本人亲手调试过的

1.jspsmartupload

这个组件用起来是挺方便的,不过就是只适合小文件上传,如果大文件上传的话就不行,查看了一下他的代码,m_totalBytes = m_request.getContentLength(); m_binArray = new byte[m_totalBytes];居然把整个上传文件都读到内存去了,那如果是上传几十M的文件,同时几个用户上传,服务器稳挂,不过如果只是上传5M以内的小文件,这个组件还是挺实用的

下面是源代码:

File类

/*

* 创建日期 2006-7-29

*

* 更改所生成文件模板为

* 窗口 > 首选项 > Java > 代码生成 > 代码和注释

*/

package com.kinstar.issuing.file;

/**

* @author gongyifeng

*

* 更改所生成类型注释的模板为

* 窗口 > 首选项 > Java > 代码生成 > 代码和注释

*/

import java.io.ByteArrayInputStream;

import java.io.FileOutputStream;

import java.io.IOException;

import java.math.BigInteger;

import java.sql.ResultSet;

import java.sql.SQLException;

import java.text.DateFormat;

import java.text.SimpleDateFormat;

import java.util.Date;

import javax.servlet.ServletException;

// Referenced classes of package com.jspsmart.upload:

// SmartUploadException, SmartUpload

public class File{

private SmartUpload m_parent;

private int m_startData;

private int m_endData;

private int m_size;

private String m_fieldname;

private String m_filename;

private String m_fileExt;

private String m_filePathName;

private String m_contentType;

private String m_contentDisp;

private String m_typeMime;

private String m_subTypeMime;

private String m_contentString;

private boolean m_isMissing;

public static final int SAVEAS_AUTO = 0;

public static final int SAVEAS_VIRTUAL = 1;

public static final int SAVEAS_PHYSICAL = 2;

File(){

m_startData = 0;

m_endData = 0;

m_size = 0;

m_fieldname = new String();

m_filename = newdisCXUJ String();

m_fileExt = new String();

m_filePathName = new String();

m_contentType = new String();

m_contentDisp = new String();

m_typeMime = new String();

m_subTypeMime = new String();

m_contentString = new String();

m_isMissing = true;

}

public void saveAs(String s) throws IOException, SmartUploadException{

saveAs(s, 0);

}

public void saveAs(String s, int i) throws IOException, SmartUploadException{

String s1 = new String();

s1 = m_parent.getPhysicalPath(s, i);

if(s1 == null)

throw new IllegalArgumentException("There is no specified destination file (1140).");

try

{

java.io.File file = new java.io.File(s1);

FileOutputStream fileoutputstream = new FileOutputStream(file);

fileoutputstream.write(m_parent.m_binArray, m_startData, m_size);

fileoutputstream.close();

}

catch(IOException ioexception)

{

throw new SmartUploadException("File can't be saved (1120).");

}

}

public void fileToField(ResultSet resultset, String s) throws ServletException, IOException, SmartUploadException, SQLException{

long l = 0L;

int i = 0x10000;

int j = 0;

int k = m_startData;

if(resultset == null)

throw new IllegalArgumentException("The RecordSet cannot be null (1145).");

if(s == null)

throw new IllegalArgumentException("The columnName cannot be null (1150).");

if(s.length() == 0)

throw new IllegalArgumentException("The columnName cannot be empty (1155).");

l = BigInteger.valueOf(m_size).divide(BigInteger.valueOf(i)).longValue();

j = BigInteger.valueOf(m_size).mod(BigInteger.valueOf(i)).intValue();

try

{

for(int i1 = 1; (long)i1 < l; i1++)

{

resultset.updateBinaryStream(s, new ByteArrayInputStream(m_parent.m_binArray, k, i), i);

k = k != 0 ? k : 1;

k = i1 * i + m_startData;

}

if(j > 0)

resultset.updateBinaryStream(s, new ByteArrayInputStream(m_parent.m_binArray, k, j), j);

}catch(SQLException sqlexception){

byte abyte0[] = new byte[m_size];

System.arraycopy(m_parent.m_binArray, m_startData, abyte0, 0, m_size);

resultset.updateBytes(s, abyte0);

}catch(Exception exception)

{

throw new SmartUploadException("Unable to save file in the DataBase (1130).");

}

}

public boolean isMissing(){

return m_isMissing;

}

public String getFieldName(){

return m_fieldname;

}

public String getFileName(){

DateFormat df = new SimpleDateFormat("yyyyMMddHHmmss");

String date = df.format(new Date());

return date+m_filename;

}

public String getFilePathName(){

return m_filePathName;

}

public String getFileExt(){

return m_fileExt;

}

public String getContentType(){

return m_contentType;

}

public String getContentDisp(){

return m_contentDisp;

}

public String getContentString(){

String s = new String(m_parent.m_binArray, m_startData, m_size);

return s;

}

public String getTypeMIME() throws IOException{

return m_typeMime;

}

public String getSubTypeMIME(){

return m_subTypeMime;

}

public int getSize(){

return m_size;

}

protected int getStartData(){

return m_startData;

}

protected int getEndData(){

return m_endData;

}

protected void setParent(SmartUpload smartupload){

m_parent = smartupload;

}

protected void setStartData(int i){

m_startData = i;

}

protected void setEndData(int i){

m_endData = i;

}

protected void setSize(int i){

m_size = i;

}

protected void setIsMissing(boolean flag){

m_isMissing = flag;

}

protected void setFieldName(String s){

m_fieldname = s;

}

protected void setFileName(String s){

m_filename = s;

}

protected void setFilePathName(String s){

m_filePathName = s;

}

protected void setFileExt(String s){

m_fileExt = s;

}

protected void setContentType(String s){

m_contentType = s;

}

protected void setContentDisp(String s){

m_contentDisp = s;

}

protected void setTypeMIME(String s){

m_typeMime = s;

}

protected void setSubTypeMIME(String s){

m_subTypeMime = s;

}

public byte getBinaryData(int i){

if(m_startData + i > m_endData)

throw new ArrayIndexOutOfBoundsException("Index Out of range (1115).");

if(m_startData + i <= m_endData)

return m_parent.m_binArray[m_startData + i];

else

return 0;

}

}

Files类

/*

* 创建日期 2006-7-29

*

* 更改所生成文件模板为

* 窗口 > 首选项 > Java > 代码生成 > 代码和注释

*/

package com.kinstar.issuing.file;

/**

* @author gongyifeng

*

* 更改所生成类型注释的模板为

* 窗口 > 首选项 > Java > 代码生成 > 代码和注释

*/

import java.io.IOException;

import java.util.*;

// Referenced classes of package com.jspsmart.upload:

// File, SmartUpload

public class Files{

private SmartUpload m_parent;

private Hashtable m_files;

private int m_counter;

Files(){

m_files = new Hashtable();

m_counter = 0;

}

protected void addFile(File file){

if(file == null)

{

throw new IllegalArgumentException("newFile cannot be null.");

} else {

m_files.put(new Integer(m_counter), file);

m_counter++;

return;

}

}

public File getFile(int i)

{

if(i < 0)

throw new IllegalArgumentException("File's index cannot be a negative value (1210).");

File file = (File)m_files.get(new Integer(i));

if(file == null)

throw new IllegalArgumentException("Files' name is invalid or does not exist (1205).");

else

return file;

}

public int getCount()

{

return m_counter;

}

public long getSize() throws IOException

{

long l = 0L;

for(int i = 0; i < m_counter; i++)

l += getFile(i).getSize();

return l;

}

public Collection getCollection()

{

return m_files.values();

}

public Enumeration getEnumeration()

{

return m_files.elements();

}

}

Request类

/*

* 创建日期 2006-7-29

*

* 更改所生成文件模板为

* 窗口 > 首选项 > Java > 代码生成 > 代码和注释

*/

package com.kinstar.issuing.file;

/**

* @author gongyifeng

*

* 更改所生成类型注释的模板为

* 窗口 > 首选项 > Java > 代码生成 > 代码和注释

*/

import java.util.Enumeration;

import java.util.Hashtable;

public class Request

{

private Hashtable m_parameters;

private int m_counter;

Request(){

m_parameters = new Hashtable();

m_counter = 0;

}

protected void putParameter(String s, String s1) {

if(s == null)

throw new IllegalArgumentException("The name of an element cannot be null.");

if(m_parameters.containsKey(s))

{

Hashtable hashtable = (Hashtable)m_parameters.get(s);

hashtable.put(new Integer(hashtable.size()), s1);

} else{

Hashtable hashtable1 = new Hashtable();

hashtable1.put(new Integer(0), s1);

m_parameters.put(s, hashtable1);

m_counter++;

}

}

public String getParameter(String s){

if(s == null)

throw new IllegalArgumentException("Form's name is invalid or does not exist (1305).");

Hashtable hashtable = (Hashtable)m_parameters.get(s);

if(hashtable == null)

return null;

else

return (String)hashtable.get(new Integer(0));

}

public Enumeration getParameterNames()

{

return m_parameters.keys();

}

public String[] getParameterValues(String s)

{

if(s == null)

throw new IllegalArgumentException("Form's name is invalid or does not exist (1305).");

Hashtable hashtable = (Hashtable)m_parameters.get(s);

if(hashtable == null)

return null;

String as[] = new String[hashtable.size()];

for(int i = 0; i < hashtable.size(); i++)

as[i] = (String)hashtable.get(new Integer(i));

return as;

}

}

SmartUpload类

/*

* 创建日期 2006-7-29

*

* 更改所生成文件模板为

* 窗口 > 首选项 > Java > 代码生成 > 代码和注释

*/

package com.kinstar.issuing.file;

/**

* @author gongyifeng

*

* 更改所生成类型注释的模板为

* 窗口 > 首选项 > Java > 代码生成 > 代码和注释

*/

import java.io.*;

import java.sql.ResultSet;

import java.sql.SQLException;

import java.util.Vector;

import javax.servlet.*;

import javax.servlet.http.*;

import javax.servlet.jsp.JspWriter;

import javax.servlet.jsp.PageContext;

// Referenced classes of package com.jspsmart.upload:

// Files, Request, SmartUploadException, File

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 Files m_files;

private Request 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 Files();

m_formRequest = new Request();

}

public final void init(ServletConfig servletconfig) throws ServletException

{

m_application = servletconfig.getServletContext();

}

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();

}

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;

long l = 0L;

boolean flag1 = false;

StringdisCXUJ 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();

boolean flag2 = false;

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)

{

com.kinstar.issuing.file.File file = new com.kinstar.issuing.file.File();

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("/");

if(s.indexOf("/") != -1)

{

if(s.charAt(s.length() - 1) != '/')

s = s + "/";

} else

if(s.charAt(s.length() - 1) != '\\')

s = s + "\\";

for(int k = 0; k < m_files.getCount(); k++)

if(!m_files.getFile(k).isMissing())

{

m_files.getFile(k).saveAs(s + m_files.getFile(k).getFileName(), i);

j++;

}

return j;

}

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 Files getFiles()

{

return m_files;

}

public Request 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=" + getFileName(s));

else

if(s2.length() == 0)

m_response.setHeader("Content-Disposition", m_contentDisposition);

else

m_response.setHeader("Content-Disposition", m_contentDisposition + " filename=" + s2);

while((long)k < l)

{

int j = fileinputstream.read(abyte0, 0, i);

k += j;

m_response.getOutputStream().write(abyte0, 0, j);

}

fileinputstream.close();

}

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(46) + 1;

j = s.length();

s1 = s.substring(i, j);

if(s.lastIndexOf(46) > 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();

int i = 0;

boolean flag = false;

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();

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 = 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()

{

int i = m_currentIndex;

int j = 0;

boolean flag = false;

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();

int i = 0;

boolean flag = false;

boolean flag1 = false;

boolean flag2 = false;

i = s.lastIndexOf(47);

if(i != -1)

return s.substring(i + 1, s.length());

i = s.lastIndexOf(92);

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 != "")

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 != "")

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

{

int i = 0;

int j = 0;

boolean flag = false;

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;

}

}

}

SmartUploadException 类

/*

* 创建日期 2006-7-29

*

* 更改所生成文件模板为

* 窗口 > 首选项 > Java > 代码生成 > 代码和注释

*/

package com.kinstar.issuing.file;

/**

* @author gongyifeng

*

* 更改所生成类型注释的模板为

* 窗口 > 首选项 > Java > 代码生成 > 代码和注释

*/

public class SmartUploadException extends Exception

{

SmartUploadException(String s)

{

super(s);

}

}

上传的Servlet

package com.kinstar.issuing.action;

import java.io.IOException;

import javax.servlet.Servlet;

import javax.servlet.ServletException;

import java.io.*;

import java.sql.SQLException;

import java.util.*;

import java.text.*;

import javax.servlet.*;

import javax.servlet.http.*;

import javax.servlet.http.HttpServlet;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import com.kinstar.issuing.file.File;

import com.kinstar.issuing.file.SmartUpload;

import com.kinstar.issuing.objects.t_user;

import com.kinstar.issuing.operation.UserOperation;

import com.kinstar.issuing.program.programService;

import com.kinstar.issuing.session.SessionGloble;

import com.kinstar.issuing.util.StringUtil;

/**

* @version 1.0

* @author gyf

*/

public class upload2ProgramAction extends HttpServlet{

private ServletConfig config;

/**

* 初始化Servlet

*/

final public void init(ServletConfig config) throws ServletException {

this.config = config;

}

/**

* 处理GET请求

*/

public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

doPost(request,response);

}

/**

* 响应POST请求

*/

public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

int count=0;

SmartUpload mySmartUpload = new SmartUpload();

try {

// 初始化

mySmartUpload.initialize(config,request,response);

// 上载

mySmartUpload.upload();

com.kinstar.issuing.file.File f1 = mySmartUpload.getFiles().getFile(0);

// com.kinstar.issuing.file.File f2 = mySmartUpload.getFiles().getFile(1);

String backPic = f1.getFileName();

//String name2 = f2.getFileName();

long size=0;

// 保存上载文件到指定目录

count=mySmartUpload.save("ads");

response.sendRedirect("program.jsp?dopass=ture");

}

catch (Exception e){

response.sendRedirect("fail.jsp");

}

}

2.common-fileupload组件

挺好用的,也能够上传大文件,我试过,300M以上的文件上传本地传非常快,异地测试也能够上传成功.

首先要下载org.apache.commons.fileupload包和org.apache.commons.io包

下面是我的servlet

package com.kinstar.issuing.action;

import java.io.IOException;

import javax.servlet.Servlet;

import javax.servlet.ServletException;

import java.io.*;

import java.sql.SQLException;

import java.util.*;

import java.text.*;

import javax.servlet.*;

import javax.servlet.http.*;

import java.util.regex.*;

import javax.servlet.http.HttpServlet;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import org.apache.commons.fileupload.DiskFileUpload;

import org.apache.commons.fileupload.FileItem;

import org.apache.commons.fileupload.FileUploadException;

import com.kinstar.issuing.objects.t_user;

import com.kinstar.issuing.operation.UserOperation;

import com.kinstar.issuing.program.programService;

import com.kinstar.issuing.session.SessionGloble;

import com.kinstar.issuing.util.StringUtil;

/**

* @version 1.0

* @author gyf

*/

public class uploadProgramAction extends HttpServlet{

private static final String CONTENT_TYPE = "text/html; charset=GB2312";

/**

* 处理GET请求

*/

public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

doPost(request,response);

}

/**

* 响应POST请求

*/

public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

// 变量定义

response.setContentType(CONTENT_TYPE);

HttpSession modifysession=request.getSession();

SessionGloble logonUser;

logonUser=(SessionGloble)modifysession.getAttribute("UserInfo");

if(logonUser==null){

response.sendRedirect("mainindex.jsp");

}

t_user userinfo=new t_user();

UserOperation user=null;

try {

user = new UserOperation();

} catch (Exception e1) {

// TODO 自动生成 catch 块

e1.printStackTrace();

}

try {

userinfo=user.getUser(logonUser.getUserId());

} catch (Exception e2) {

// TODO 自动生成 catch 块

e2.printStackTrace();

}

//System.out.println("figure="+userinfo.getUserFigure());

PrintWriter out=response.getWriter();

DateFormat updf = new SimpleDateFormat("yyyyMMddHHmm");

String updateTime = updf.format(new Date());

int isNeed = 0;

String IsCheck="0";

//省农行用户上传的节目必需显示，且审批已经合格

if(userinfo.getUserFigure().equals("1")){

isNeed = 1;

IsCheck = "1";

}

else{

isNeed = 0;

IsCheck = "0";

}

int type=0;

String avaTime="";

String screen="";

int fileTime=0;

int fileTimeReal=0;

int circle=0;

String picSwitch="";

String deleState="1";

String backPic="";

String fieldName="";

String finalName="";

String fileNameReal="";

long size=0;

String name="";

try {

DiskFileUpload fu = new DiskFileUpload();

// 设置允许用户上传文件大小,单位:字节，这里设为2m

fu.setSizeMax(5*1024*1024*1024);

// 设置最多只允许在内存中存储的数据,单位:字节

fu.setSizeThreshold(10*1024*1024);

// 设置一旦文件大小超过getSizeThreshold()的值时数据存放在硬盘的目录

fu.setRepositoryPath("C:\\WINDOWS\\Temp\\");

//开始读取上传信息

List fileItems = fu.parseRequest(request);

//依次处理每个上传的文件

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);

StringUtil su = new StringUtil();

while (iter.hasNext()) {

FileItem item = (FileItem)iter.next();

if(item.isFormField()) {

// 获得表单域的名字

fieldName = item.getFieldName();

// 如果表单域的名字是name…

if(fieldName.equals("type"))

type = Integer.parseInt(item.getString());

}

if (!item.isFormField()) {

name = item.getName();

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

if (m.group(1).endsWith(errorType[temp])){

throw new IOException(name+": wrong type");

}

}

DateFormat df = new SimpleDateFormat("yyyyMMddHHmmss");

String date = df.format(new Date());

fileNameReal=date+m.group(1);

finalName=date+Math.round(Math.random()*10000)+fileNameReal.substring(fileNameReal.indexOf("."));

//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(getServletContext().getRealPath(".//ads//")+finalName));

//out.print(finalName+size);

}

else

{

throw new IOException("fail to upload");

}

}

if(item.isFormField()) {

// 获得表单域的名字

fieldName = item.getFieldName();

if(fieldName.equals("avaTime"))

avaTime=item.getString();

if(fieldName.equals("screen"))

screen=item.getString();

if(fieldName.equals("fileTime"))

fileTime = Integer.parseInt(item.getString());

if(fieldName.equals("fileTimeReal"))

fileTimeReal = Integer.parseInt(item.getString());

if(fieldName.equals("circle"))

circle = Integer.parseInt(item.getString());

if(fieldName.equals("switchPic"))

picSwitch = item.getString();

}

}

}catch (IOException e){

out.println(e);

}catch (FileUploadException e){

out.println(e);

} catch (Exception e) {

// TODO 自动生成 catch 块

e.printStackTrace();

}

if(finalName.equals("")){

response.sendRedirect("fail.jsp");

}

else{

try {

programService ps = new programService();

ps.insertProgram(userinfo.getUserId(),updateTime,type,finalName,size,isNeed,avaTime,deleState,IsCheck,userinfo.getCity(),backPic,screen,fileTime,fileTimeReal,picSwitch,circle,userinfo.getUserFigure(),new String(fileNameReal.getBytes("GB2312"),"ISO8859-1"));

response.sendRedirect("program.jsp?dopass=true");

} catch (Exception e3) {

// TODO 自动生成 catch 块

e3.printStackTrace();

}

}

}

}

如有疑问请留言或者到本站社区交流讨论，感谢阅读，希望能帮助到大家，谢谢大家对本站的支持！

if (m.group(1).endsWith(errorType[temp])){

throw new IOException(name+": wrong type");

}

}

DateFormat df = new SimpleDateFormat("yyyyMMddHHmmss");

String date = df.format(new Date());

fileNameReal=date+m.group(1);

finalName=date+Math.round(Math.random()*10000)+fileNameReal.substring(fileNameReal.indexOf("."));

//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(getServletContext().getRealPath(".//ads//")+finalName));

//out.print(finalName+size);

}

else

{

throw new IOException("fail to upload");

}

}

if(item.isFormField()) {

// 获得表单域的名字

fieldName = item.getFieldName();

if(fieldName.equals("avaTime"))

avaTime=item.getString();

if(fieldName.equals("screen"))

screen=item.getString();

if(fieldName.equals("fileTime"))

fileTime = Integer.parseInt(item.getString());

if(fieldName.equals("fileTimeReal"))

fileTimeReal = Integer.parseInt(item.getString());

if(fieldName.equals("circle"))

circle = Integer.parseInt(item.getString());

if(fieldName.equals("switchPic"))

picSwitch = item.getString();

}

}

}catch (IOException e){

out.println(e);

}catch (FileUploadException e){

out.println(e);

} catch (Exception e) {

// TODO 自动生成 catch 块

e.printStackTrace();

}

if(finalName.equals("")){

response.sendRedirect("fail.jsp");

}

else{

try {

programService ps = new programService();

ps.insertProgram(userinfo.getUserId(),updateTime,type,finalName,size,isNeed,avaTime,deleState,IsCheck,userinfo.getCity(),backPic,screen,fileTime,fileTimeReal,picSwitch,circle,userinfo.getUserFigure(),new String(fileNameReal.getBytes("GB2312"),"ISO8859-1"));

response.sendRedirect("program.jsp?dopass=true");

} catch (Exception e3) {

// TODO 自动生成 catch 块

e3.printStackTrace();

}

}

}

}

如有疑问请留言或者到本站社区交流讨论，感谢阅读，希望能帮助到大家，谢谢大家对本站的支持！

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