jsf实现同时上传不定数量的文件

来源：互联网发布：cdn加速服务域名是什么编辑：程序博客网时间：2024/06/07 06:39

基本思路：<t:dataTable>内部放置<t:inputFileUpload>,根据设定的上传文件数，构造dataTable的List。
说明：以下代码包含了文件上传以外的相关代码，不做整理了。

实现目标：

<html>
<head>
<title>uploadfile</title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<style type="text/css">

</style>
<script language="JavaScript">

</script>
</head>

<body bgcolor="#FFFFFF" text="#000000" background="bj.gif">
<form name="form1" method="post" action="upfile.asp" enctype="multipart/form-data" >
  <input type="hidden" name="act" value="upload">
  <table width="76%" border="1" cellspacing="0" cellpadding="5" align="center" bordercolordark="#CCCCCC" bordercolorlight="#000000" height="182">
    <tr bgcolor="#CCCCCC">
      <td height="22" align="left" valign="middle" bgcolor="#CCCCCC">
文件上传</td>
    </tr>
    <tr align="left" valign="middle" bgcolor="#eeeeee">
      <td bgcolor="#eeeeee" height="1">
        <script language="javascript">
      function setid()
      {
      str='<br>';
      if(!window.form1.upcount.value)
       window.form1.upcount.value=1;
       for(i=1;i<=window.form1.upcount.value;i++)
         str+='文件'+i+':<input type="file" name="file'+i+'" style="width:400" class="tx1"><br><br>';
      window.upid.innerHTML=str;
      }
      </script>
        <li> 需要上传的个数
          <input type="text" name="upcount" class="tx" value="1">
          <input type="button" name="Button" class="bt" onclick="setid();" value="· 设定 ·">
        </li>
      </td>
    </tr>
    <tr align="center" valign="middle">
      <td align="left" id="upid" height="32"> 文件1:
        <input type="file" name="file1" style="width:403; height:20" class="tx1" value=""></td>
    </tr>
    <tr align="center" valign="middle" bgcolor="#eeeeee">
      <td bgcolor="#eeeeee" height="28">
        <input type="submit" name="Submit" value="· 提交 ·" class="bt">
        <input type="reset" name="Submit2" value="· 重置 ·" class="bt"></td>
    </tr>
  </table>
</form>
</body>
</html>

jsp：

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

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

<%@taglib uri="http://java.sun.com/jsf/html" prefix="h"%>

<%@taglib uri="http://java.sun.com/jsf/core" prefix="f"%>

<%@taglib prefix="t" uri="http://myfaces.apache.org/tomahawk"%>

<f:loadBundle basename="batsys.resources.batsys" var="batsys" />

<h:form>

<h:panelGrid width="100%" columns="5" border="1"

styleClass="scrollerTable2">

<f:facet name="header">

<h:outputText value="#{batsys['fttx.FT1001.wjsc']}" />

</f:facet>

<h:outputText value="#{batsys['fttx.FT1001.ywlx']}" />

<h:selectOneMenu value="#{FT1001.bizType}" styleClass="SELECT">

<f:selectItems value="#{FT1001.bizTypeItems}" />

</h:selectOneMenu>

<h:outputText value="#{batsys['fttx.FT1001.filecount']}" />

<h:panelGroup>

<h:inputText value="#{FT1001.upcount}" id="upcount">

<f:validateLongRange maximum="#{FT1001.maxUpCount}" />

</h:inputText>

<h:message for="upcount" styleClass="error" />

</h:panelGroup>

<h:commandButton value="#{batsys['fttx.FT1001.setcount']}"

action="FT1001_1" />

<h:outputText value="#{batsys['fttx.FT1001.sh']}" />

<h:selectOneListbox value="#{FT1001.branchNo}" size="1">

<f:selectItems value="#{FT1001.branchItems}" />

</h:selectOneListbox>

</h:panelGrid>

</h:form>

<h:form enctype="multipart/form-data">

<t:dataTable value="#{FT1001.fileUploadList}" var="fileUploadList"

width="100%" border="1" align="center" columnClasses="center,center">

<h:column>

<h:outputText value="#{fileUploadList.xh}" />

</h:column>

<h:column>

<t:inputFileUpload value="#{fileUploadList.uploadedFile}"

required="true" id="uploadedFile" />

<h:message for="uploadedFile" styleClass="error" />

</h:column>

</t:dataTable>

<h:panelGrid width="100" columns="1" cellspacing="0" cellpadding="5"

columnClasses="right,left" align="center">

<h:commandButton value="#{batsys['GL1001.uploadfile']}"

action="#{FT1001.storeFile}" styleClass="button" />

</h:panelGrid>

</h:form>

BackingBean：

package batsys.backingbean.fttx;

import java.io.File;

import java.io.IOException;

import java.util.ArrayList;

import java.util.Iterator;

import java.util.LinkedList;

import java.util.List;

import javax.faces.model.SelectItem;

import org.apache.myfaces.custom.fileupload.UploadedFile;

import batsys.biz.BSGL1001;

import batsys.biz.common.FindBranchInfo;

import batsys.biz.common.SearchEnums;

import batsys.enums.EBizType;

import ccbxj.app.AppBackingBean;

import ccbxj.app.AppContext;

import ccbxj.app.web.security.util.WebSecurityUtil;

import ccbxj.dbtable.TNBICodeTran;

import ccbxj.dbtable.TNBranch;

import ccbxj.ss.SSResource;

public class FT1001 extends AppBackingBean {

// 同时上传文件的个数

private int upcount;

// 允许同时上传文件的最大个数，初值在配置BackingBean时定义

private int maxUpCount;

private int bizType;

private String branchNo;

// 放置FT1001VO(上传文件VO)的集合

private List fileUploadList;

private List bizTypeItems = null;

private List branchItems = null;

AppContext ac = WebSecurityUtil.getAppContext();

public void setFileUploadList(List fileUploadList) {

this.fileUploadList = fileUploadList;

}

public int getUpcount() {

return upcount;

}

public void setUpcount(int upcount) {

this.upcount = upcount;

}

public int getBizType() {

return bizType;

}

public void setBizType(int bizType) {

this.bizType = bizType;

}

/**

* 遍历上传文件的集合，并批量上传到服务器磁盘

* @return null

public String storeFile() {

BSGL1001 bsgl1001 = new BSGL1001();

try {

if (fileUploadList != null) {

for (Iterator iter = fileUploadList.iterator(); iter.hasNext();) {

FT1001VO ft1001VO = (FT1001VO) iter.next();

UploadedFile uploadedFile = ft1001VO.getUploadedFile();

String of = BSGL1001.uploadFileName(uploadedFile.getName()); // 文件的原始名称

File saveFile = new File(BSGL1001.uploadPath(SSResource

.getUploadPath(), ac)

+ File.separator + of);

bsgl1001.saveFile(ft1001VO.getUploadedFile(), saveFile);

}

} catch (IOException e) {

e.printStackTrace();

} catch (Exception e) {

e.printStackTrace();

}

return null;

}

/**

* 根据设定的上传文件数，构造dataTable的List

* @return List

public List getFileUploadList() {

fileUploadList = new ArrayList();

FT1001VO ft1001VO = null;

String str = "文件";

for (int i = 1; i <= upcount; i++) {

ft1001VO = new FT1001VO();

ft1001VO.setXh(str + i + ":");

fileUploadList.add(ft1001VO);

}

return fileUploadList;

}

/**

* 查询枚举表，为业务类型下拉列表准备数据

* @return List

public List getBizTypeItems() {

try {

SearchEnums se = SearchEnums.getInstance();

List bizTypeList = null;

bizTypeList = se.getEnumsByClassName(EBizType.class.getName());

bizTypeItems = new LinkedList();

if (bizTypeList != null) {

for (Iterator iter = bizTypeList.iterator(); iter.hasNext();) {

TNBICodeTran tnbicodeTran = (TNBICodeTran) iter.next();

bizTypeItems.add(new SelectItem(tnbicodeTran.getCode(),

tnbicodeTran.getName()));

}

setBizTypeItems(bizTypeItems);

}

} catch (Exception e) {

e.printStackTrace();

this.throwException(ac, e, this.getClass().getName(),

"getBizTypeItems", "查询业务类型的下拉列表时抛出Exception");

}

return bizTypeItems;

}

public void setBizTypeItems(List bizTypeItems) {

this.bizTypeItems = bizTypeItems;

}

/**

* 根据部门编码取得下级部门列表，用于文件上传交易第一个页面的部门(所号)列表

* @return List

public List getBranchItems() {

try {

List branchList = null;

branchList = FindBranchInfo.getInstance().getBranchList("xj",

ac.getBranchCode());

branchItems = new LinkedList();

if (branchList != null) {

for (Iterator iter = branchList.iterator(); iter.hasNext();) {

TNBranch branch = (TNBranch) iter.next();

branchItems.add(new SelectItem(branch.getBranchNo(), branch

.getBranchNo()

+ "(" + branch.getBranchName() + ")"));

}

setBranchItems(branchItems);

}

} catch (Exception e) {

e.printStackTrace();

this.throwException(ac, e, this.getClass().getName(),

"getBranchItems", "查询部门列表时抛出Exception，当前机构号为："

+ ac.getBranchCode());

}

return branchItems;

}

public void setBranchItems(List branchItems) {

this.branchItems = branchItems;

}

public String getBranchNo() {

return branchNo;

}

public void setBranchNo(String branchNo) {

this.branchNo = branchNo;

}

public int getMaxUpCount() {

return maxUpCount;

}

public void setMaxUpCount(int maxUpCount) {

this.maxUpCount = maxUpCount;

}

VO：

package batsys.backingbean.fttx;

import org.apache.myfaces.custom.fileupload.UploadedFile;

/**

* 类名: FT1001VO

* <p>

* 功能说明：存储dataTable的一行数据

* @version 1.0 2006-9-29

public class FT1001VO {

// 文件上传的序号，如文件1，文件2

private String xh;

private UploadedFile uploadedFile;

public UploadedFile getUploadedFile() {

return uploadedFile;

}

public void setUploadedFile(UploadedFile uploadedFile) {

this.uploadedFile = uploadedFile;

}

public String getXh() {

return xh;

}

public void setXh(String xh) {

this.xh = xh;

}

保存文件到硬盘的方法：

/**

* saveFile 保存文件到硬盘

* @param uploadedFile

* UploadedFile

* @param savefile

* File 此文件必须创建存在

* @throws IOException

public void saveFile(UploadedFile uploadedFile, File savefile)

throws IOException {

byte buff[] = null;

File md = savefile.getParentFile();

if (!md.exists()) {

md.mkdirs();

}

long fs = uploadedFile.getSize();

FileOutputStream fos = new FileOutputStream(savefile);

if (fs > 1025 * 1024 * 10) { // the upload file is more than 10M byte

buff = new byte[1025 * 500]; // set buff 500k byte

} else {

buff = new byte[1025 * 100]; // set buff 100k byte

}

InputStream is = uploadedFile.getInputStream();

int rb = 0;

rb = is.read(buff);

while (rb > 0) {

fos.write(buff, 0, rb);

rb = is.read(buff);

}

fos.close();

}

faces-config.xml的配置片段：

<managed-bean>

<managed-bean-name>FT1001</managed-bean-name>

<managed-bean-class>

batsys.backingbean.fttx.FT1001

</managed-bean-class>

<managed-bean-scope>session</managed-bean-scope>

<managed-property>

<property-name>upcount</property-name>

</managed-property>

<managed-property>

<property-name>maxUpCount</property-name>

</managed-property>

</managed-bean>

<navigation-case>

<from-outcome>FT1001_1</from-outcome>

<to-view-id>/jsp/FT1001_1.jsf</to-view-id>

</navigation-case>

运行效果图：