JspSmart之upload组件源码主要包括了5个java文件 File.javaimport java.io.ByteArrayInputStream;import java.io.FileOutputStream;import java.io.IOException;import java.math.BigInteger;import java.sql.ResultSet;import java.sql.SQLException;import javax.servlet.ServletException;// Referenced classes of package com.jspsmart.upload:// SmartUploadException, SmartUploadpublic 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 = new 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()...{return 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];elsereturn 0;}}Files.javaimport java.io.IOException;import java.util.*;// Referenced classes of package com.jspsmart.upload:// File, SmartUploadpublic 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).");elsereturn 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.javaimport 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;elsereturn (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;}}SmartUploadException .javapublic class SmartUploadException extends Exception...{SmartUploadException(String s)...{super(s);}}SmartUpload.javaimport 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, Filepublic 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;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();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;elsem_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.facet.jspsmart.upload.File file = new com.facet.jspsmart.upload.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 + "/";} elseif(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");elseif(s1.length() == 0)m_response.setContentType("application/x-msdownload");elsem_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));elseif(s2.length() == 0)m_response.setHeader("Content-Disposition", m_contentDisposition);elsem_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");elseif(s1.length() == 0)m_response.setContentType("application/x-msdownload");elsem_response.setContentType(s1);m_response.setContentLength(abyte0.length);if(s2 == null)m_response.setHeader("Content-Disposition", "attachment;");elseif(s2.length() == 0)m_response.setHeader("Content-Disposition", "attachment;");elsem_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;elsereturn "";}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);elsereturn 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());elsereturn 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;elses1 = s1 + s3 + s2;return s1;}if(flag)...{if(m_denyPhysicalPath)throw new IllegalArgumentException("Physical path is denied (1125).");elsereturn 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;elses1 = s1 + s3 + s2;return s1;}if(flag)throw new IllegalArgumentException("The path is not a virtual path.");elsethrow new IllegalArgumentException("This path does not exist (1135).");}if(i == 2)...{if(flag)if(m_denyPhysicalPath)throw new IllegalArgumentException("Physical path is denied (1125).");elsereturn s;if(isVirtual(s1))throw new IllegalArgumentException("The path is not a physical path.");elsethrow 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;}}}jspsmart的使用上传// 新建一个SmartUpload对象SmartUpload su = new SmartUpload(); // 上传初始化su.initialize(pageContext); // 限制每个上传文件的最大长度。su.setMaxFileSize(10000); // 限制总上传数据的长度。su.setTotalMaxFileSize(20000); // 设定允许上传的文件(通过扩展名限制),仅允许doc,txt文件。su.setAllowedFilesList("doc,txt");// 设定禁止上传的文件(通过扩展名限制),禁止上传带有exe,bat,//jsp,htm,html扩展名的文件和没有扩展名的文件。su.setDeniedFilesList("exe,bat,jsp,htm,html,,");// 上传文件su.upload();// 将上传文件全部保存到指定目录int count = su.save("/upload");下载// 新建一个SmartUpload对象SmartUpload su = new SmartUpload();// 初始化su.initialize(pageContext);// 设定contentDisposition为null以禁止浏览器自动打开文件,//保证点击链接后是下载文件。若不设定,则下载的文件扩展名为//doc时,浏览器将自动用word打开它。扩展名为pdf时,//浏览器将用acrobat打开。su.setContentDisposition(null);// 下载文件su.downloadFile("/upload/test.doc");