struts上传文件

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1.上传的jsp页面代码_uploadfiles.jsp

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">

<html>

<head>

</head>

<body>

<logic:messagesPresent>

<tr>

<ul>

<bean:message key="errors.header" />

<html:messages id="error"><li><bean:write name="error" /></li>

</html:messages>

</ul>

</td>

</tr>

</table>

</logic:messagesPresent>

<html:form action="/uploadfile.do?action=addfile" enctype="multipart/form-data" method="post">

<tr>

</tr>

<tr>

</tr>

<tr>

<html:submit>增加资料</html:submit>

<html:reset>重写</html:reset>

</td>

</tr>

</table>

</html:form>

</body>

</html>

2.Action文件_UploadfileAction.java

* Generated by MyEclipse Struts

* Template path: templates/java/JavaClass.vtl

package com.mk.struts.action;

import java.io.File;

import java.io.FileOutputStream;

import java.io.IOException;

import java.io.InputStream;

import java.io.OutputStream;

import java.io.PrintWriter;

import java.sql.Connection;

import java.sql.SQLException;

import java.text.SimpleDateFormat;

import java.util.Date;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import javax.servlet.http.HttpSession;

import javax.sql.DataSource;

import org.apache.struts.action.Action;

import org.apache.struts.action.ActionForm;

import org.apache.struts.action.ActionForward;

import org.apache.struts.action.ActionMapping;

import org.apache.struts.action.ActionMessage;

import org.apache.struts.action.ActionMessages;

import org.apache.struts.upload.FormFile;

import com.mk.bean.ConvertImage;

import com.mk.struts.dao.BookDAO;

import com.mk.struts.dao.FileDAO;

import com.mk.struts.filter.CharFilter;

import com.mk.struts.form.UploadfileForm;

/**

* MyEclipse Struts

* Creation date: 01-10-2007

* XDoclet definition:

* @struts.action path="/uploadfile" name="uploadfileForm" input="/file/uploadfiles.jsp" scope="request" validate="true"

public class UploadfileAction extends Action {

* Generated Methods

/**

* Method execute

* @param mapping

* @param form

* @param request

* @param response

* @return ActionForward

public ActionForward execute(ActionMapping mapping, ActionForm form,

HttpServletRequest request, HttpServletResponse response)

{

UploadfileForm uploadfileForm = (UploadfileForm) form; // TODO Auto-generated method stub

FormFile filename = uploadfileForm.getFilename() ;

String memo = CharFilter.toChinese(uploadfileForm.getMemo()) ;

DataSource ds = null ;

Connection conn = null ;

HttpSession session = null ;

try

{

ds = getDataSource(request , "A") ;

conn = ds.getConnection() ;

FileDAO sqlDao = new FileDAO(conn) ;

String action = request.getParameter("action") ;

ActionMessages errors = new ActionMessages() ;

//增加文件

if ( action.equals("addfile"))

{

//传递文件

if ( filename.getFileName().trim().length() > 0 )

{

// 取得上传时间

SimpleDateFormat DateFormat1 = new SimpleDateFormat("yyyy-MM-dd");

Date dt = new Date() ;

String uptime = DateFormat1.format(dt) ;

String tempname = "" ;

try

{

//开始上传文件

String filePath = this.getServlet().getServletContext().getRealPath("/") ; //取得当前路径

InputStream stream = filename.getInputStream() ; //把文件读入

// ByteArrayOutputStream baos = new ByteArrayOutputStream() ;

* 建立一个上传文件的输出流如果是linux系统请把"/" 换成 "/"

System.out.println(filename.getFileName()) ;

int position = filename.getFileName().indexOf(".") ;

String type = filename.getFileName().substring(position);

String fileid = sqlDao.getMaxFileID() ;

tempname = fileid + type ;

OutputStream bos = new FileOutputStream(filePath + "file/upfiles/" + tempname ) ;

//request.setAttribute("fileName",filePath + "/" + CharFilter.toChinese((String)filename.getFileName()) ) ;

int bytesRead = 0 ;

byte[] buffer = new byte[8192] ;

while( (bytesRead = stream.read(buffer,0,8192) ) != -1 )

{

bos.write(buffer,0,bytesRead) ;

}

bos.close();

stream.close() ;

//上传文件完成

}

catch(Exception e)

{

errors.add(ActionMessages.GLOBAL_MESSAGE , new ActionMessage("file.add.failure")) ;

if ( !errors.isEmpty()) { saveErrors(request, errors) ;}

return new ActionForward(mapping.getInput()) ;

}

//写入记录

if (!sqlDao.insertNewFile(tempname , filename.getFileName(), memo, uptime))

{

errors.add(ActionMessages.GLOBAL_MESSAGE , new ActionMessage("file.add.failure")) ;

if ( !errors.isEmpty()) { saveErrors(request, errors) ;}

return new ActionForward(mapping.getInput()) ;

}

removeFormBean(mapping, request) ;

return new ActionForward(mapping.getInput()) ;

}

if ( action.equals("listfiles"))

{

request.setAttribute("file", sqlDao.getAllFiles() ) ;

removeFormBean(mapping , request ) ;

return mapping.findForward("listfiles") ;

}

if ( action.equals("del") )

{

String id = request.getParameter("id") ;

String name = CharFilter.toChinese(request.getParameter("name") );

//删除文件

String filePath = this.getServlet().getServletContext().getRealPath("/") + "file/upfiles/" ; //取得当前路径

File thisFile = new File(filePath , name ) ;

if ( thisFile.exists())

{

thisFile.delete() ;

}

//删除数据库文件

sqlDao.delfile(id) ;

return mapping.findForward("success") ;

}

catch( SQLException e )

{

e.printStackTrace() ;

}

finally

{

try

{

if ( conn != null )

{

conn.close() ;

}

catch(SQLException e )

{

e.printStackTrace() ;

}

return null ;

}

protected void removeFormBean(ActionMapping mapping, HttpServletRequest request)

{

if(mapping.getAttribute() != null)

if("request".equals(mapping.getScope()))

{

request.removeAttribute(mapping.getAttribute());

} else

{

HttpSession session = request.getSession();

session.removeAttribute(mapping.getAttribute());

}

3.数据DAO文件,FileDAO.java

package com.mk.struts.dao;

import java.sql.Connection;

import java.sql.PreparedStatement;

import java.sql.ResultSet;

import java.sql.SQLException;

import java.sql.Statement;

import java.util.List;

import org.apache.commons.beanutils.RowSetDynaClass;

import com.mk.bean.CustomRowSetDynaClass;

public class FileDAO {

private Connection conn = null ;

private String sql = "" ;

private Statement stmt = null ;

private PreparedStatement ps = null ;

private ResultSet rs = null ;

// 构造函数

public FileDAO( Connection conn )

{

this.conn = conn ;

}

// 增加文件

public boolean insertNewFile(String filename , String truename , String memo , String uptime)

{

boolean bsuccess = true ;

try

{

conn.setAutoCommit(true) ;

stmt = conn.createStatement() ;

//ID号不用加,ID号是自动增加的

//String name_id = CharFilter.toChinese(forms.getName_id()) ;

sql = "insert into file (filename , truename , memo , uptime)" +

" values ('" + filename + "','" + truename + "','" + memo +"','" + uptime + "')" ;

stmt.execute(sql) ;

}

catch( SQLException e )

{

e.printStackTrace() ;

System.out.println(e.getMessage().toString()) ;

bsuccess = false ;

throw new RuntimeException("运行发生错误!") ;

}

finally

{

try{

if ( stmt != null )

{

stmt.close() ;

}

if ( rs != null )

{

rs.close() ;

}

}catch(Exception e )

{

e.printStackTrace() ;

throw new RuntimeException("运行发生错误!") ;

}

return bsuccess ;

}

//得到全部文件

public List getAllFiles()

{

sql = "select * from file " ;

return this.getRecords(sql) ;

}

//通用函数

public List getRecords(String sql )

{

List rows = null ;

try

{

ps = conn.prepareStatement(sql , ResultSet.TYPE_SCROLL_SENSITIVE , ResultSet.CONCUR_UPDATABLE) ;

rs = ps.executeQuery() ;

RowSetDynaClass rsdc = new RowSetDynaClass(rs) ;

rows = rsdc.getRows();

}

catch(SQLException ex )

{

ex.printStackTrace() ;

}

finally

{

try

{

if ( rs != null ) rs.close() ;

if ( ps != null ) ps.close() ;

}

catch(SQLException ex )

{

ex.printStackTrace() ;

}

return rows ;

}

//按分页数得到记录值

public List getPageRecords(String sql , int iCurPage ,int iNumPerPage )

{

List rows = null ;

try

{

ps = conn.prepareStatement(sql , ResultSet.TYPE_SCROLL_SENSITIVE , ResultSet.CONCUR_UPDATABLE) ;

rs = ps.executeQuery() ;

CustomRowSetDynaClass rsdc = new CustomRowSetDynaClass(rs,iCurPage , iNumPerPage ) ;

rows = rsdc.getRows();

}

catch(SQLException ex )

{

ex.printStackTrace() ;

}

finally

{

try

{

if ( rs != null ) rs.close() ;

if ( ps != null ) ps.close() ;

}

catch(SQLException ex )

{

ex.printStackTrace() ;

}

return rows ;

}

//删除文件

public boolean delfile(String id )

{

boolean bSuccess = true ;

//下面是删除数据库记录

try

{

conn.setAutoCommit(true) ;

stmt = conn.createStatement() ;

//ID号不用加,ID号是自动增加的

sql = "delete from file where id=" + id ;

stmt.execute(sql) ;

}catch( SQLException e )

{

e.printStackTrace() ;

System.out.println(e.getMessage().toString()) ;

bSuccess = false ;

throw new RuntimeException("运行发生错误!") ;

}

finally

{

try{

if ( stmt != null )

{

stmt.close() ;

}

}catch(Exception e )

{

e.printStackTrace() ;

throw new RuntimeException("运行发生错误!") ;

}

return bSuccess ;

}

//得到文件的最大ID号

public String getMaxFileID()

{

String id="" ;

try

{

conn.setAutoCommit(true) ;

stmt = conn.createStatement() ;

sql = "select max(id) from file " ;

ResultSet rs = stmt.executeQuery(sql) ;

if (rs.next())

{

id = Integer.toString(rs.getInt("max(id)") + 1) ;

}

}catch(SQLException e )

{

e.printStackTrace() ;

throw new RuntimeException("查找文件发生错误!") ;

}finally

{

try

{

if ( stmt != null ) stmt.close() ;

if ( rs != null ) rs.close() ;

}catch( Exception e )

{

e.printStackTrace() ;

throw new RuntimeException("运行发生错误!") ;

}

return id ;

}

4.UploadfileForm.java

* Generated by MyEclipse Struts

* Template path: templates/java/JavaClass.vtl

package com.mk.struts.form;

import javax.servlet.http.HttpServletRequest;

import org.apache.struts.action.ActionErrors;

import org.apache.struts.action.ActionForm;

import org.apache.struts.action.ActionMapping;

import org.apache.struts.upload.FormFile;

/**

* MyEclipse Struts

* Creation date: 01-10-2007

* XDoclet definition:

* @struts.form name="uploadfileForm"

public class UploadfileForm extends ActionForm {

* Generated fields

/** memo property */

private String memo;

/** filename property */

private FormFile filename;

* Generated Methods

/**

* Method validate

* @param mapping

* @param request

* @return ActionErrors

public ActionErrors validate(ActionMapping mapping,

HttpServletRequest request) {

// TODO Auto-generated method stub

return null;

}

/**

* Method reset

* @param mapping

* @param request

public void reset(ActionMapping mapping, HttpServletRequest request) {

// TODO Auto-generated method stub

}

/**

* Returns the memo.

* @return String

public String getMemo() {

return memo;

}

/**

* Set the memo.

* @param memo The memo to set

public void setMemo(String memo) {

this.memo = memo;

}

/**

* Returns the filename.

* @return String

public FormFile getFilename() {

return filename;

}

/**

* Set the filename.

* @param filename The filename to set

public void setFilename(FormFile filename) {

this.filename = filename;

}

5.数据库用mysql,用于存放文件信息.包括id , filename , truename,memo,uptime几个字段.

6.struts-config.xml的数据库配置

<data-sources >

<data-source key="A" type="org.apache.commons.dbcp.BasicDataSource">

<set-property property="password" value="密码" />

<set-property property="username" value="用户" />

<set-property property="driverClassName" value="com.mysql.jdbc.Driver" />

<set-property property="url" value="jdbc:mysql://服务器:3306/数据库名" />

</data-source>

</data-sources>

7.显示上传的文件

<%@ page language="java" contentType="text/html; charset=gb2312"%>

<%@ taglib uri="/WEB-INF/struts-bean.tld" prefix="bean" %>

<%@ taglib uri="/WEB-INF/struts-html.tld" prefix="html" %>

<%@ taglib uri="/WEB-INF/struts-logic.tld" prefix="logic" %>

<%@ taglib uri="/WEB-INF/struts-tiles.tld" prefix="tiles" %>

response.setHeader("Pragma" , "No-cache" ) ;

response.setHeader("Cache-Control" , "no-Cache" ) ;

response.setDateHeader("Expires",0) ;

response.setContentType("text/html;charset=gb2312");

//得到全局用户表

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">

<html>

<head>

</head>

<body>

<tr>

</tr>

</table>

<tr>

</tr>

<logic:iterate id="file" name="file" >

<td class=tdsmall ><a href="<%=request.getContextPath()%>/file/upfiles/<bean:write name="file" property="filename" />"><bean:write name="file" property="truename" filter="false"/></a></td>

<td class=tdsmall ><a href="<%=request.getContextPath()%>/uploadfile.do?action=del&id=<bean:write name="file" property="id" />&name=<bean:write name="file" property="filename" />">删除</a></td>

</tr>

</logic:iterate>

<a href="<%=request.getContextPath()%>/file/uploadfiles.jsp" >上传文件</a>

</td>

</table>

</body>

</html>

收工!!!!