最近实验室做了一个项目，使用jspsmartupload来实现的文件的上传下载，原来在windows平台运行的挺好，但是后来系统移植到linux平台上，结果在上传或下载的文件名中有中文时就会出现乱码。后来查了网上一些人的解决方案，最彻底的解决办法就是修改jspsmartupload的源码，在upload、download方法处强制指定它的编码格式就可以了。
需要修改SmartUpload.java，修改后的代码如下：
package com.jspsmart.upload;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.UnsupportedEncodingException;
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;
private String encoding = "";// Supporting Chinese file name
//改了它的初始化方法，在初始化时显式指定使用的编码格式
public SmartUpload(String encoding) {
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();
this.encoding = encoding;
}
/**
* @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;
if (encoding != null & encoding.length() > 0) {
s11 = new String(m_binArray, m_startData,
(m_endData - m_startData) + 1, encoding);
} else {
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=" + toEncodingString(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();
}
/**
* To avoid the illegal chinese character in file name
* @param s
* @return
*/
public String toEncodingString(String s) {
if(this.encoding==null||this.encoding.length()==0){
return 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(this.encoding);
} 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() throws UnsupportedEncodingException {
// 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;
if (encoding != null && encoding.length() > 0) {
s = new String(m_binArray, i, (j - i) + 1, encoding);
} else {
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;
}
}
}
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