{转}struts里一次上传多个文件的方法。
UploadAction.java
package action;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.List;
import org.apache.struts2.ServletActionContext;
import com.opensymphony.xwork2.ActionSupport;
//文件上传Action
public class UploadAction extends ActionSupport {
//上传文件存放路径
private final static String UPLOADDIR = "/upload";
//上传文件集合
private List<File> file;
//上传文件名集合
private List<String> fileFileName;
//上传文件内容类型集合
private List<String> fileContentType;
public List<File> getFile() {
return file;
}
public void setFile(List<File> file) {
this.file = file;
}
public List<String> getFileFileName() {
return fileFileName;
}
public void setFileFileName(List<String> fileFileName) {
this.fileFileName = fileFileName;
}
public List<String> getFileContentType() {
return fileContentType;
}
public void setFileContentType(List<String> fileContentType) {
this.fileContentType = fileContentType;
}
public String execute() throws Exception {
for (int i = 0; i < file.size(); i++) {
//循环上传每个文件
uploadFile(i);
}
return "success";
}
//执行上传功能
private void uploadFile(int i) throws FileNotFoundException, IOException {
try {
InputStream in = new FileInputStream(file.get(i));
String dir = ServletActionContext.getRequest().getRealPath(UPLOADDIR);
File uploadFile = new File(dir, this.getFileFileName().get(i));
OutputStream out = new FileOutputStream(uploadFile);
byte[] buffer = new byte[1024 * 1024];
int length;
while ((length = in.read(buffer)) > 0) {
out.write(buffer, 0, length);
}
in.close();
out.close();
} catch (FileNotFoundException ex) {
ex.printStackTrace();
} catch (IOException ex) {
ex.printStackTrace();
}
}
}
===================================
struts.xml
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
"http://struts.apache.org/dtds/struts-2.0.dtd">
<struts>
<!-- 系统常量定义，定义上传文件字符集编码 -->
<constant name="struts.i18n.encoding" value="utf-8"></constant>
<!-- 系统常量定义，定义上传文件临时存放路径 -->
<constant name="struts.multipart.saveDir" value="d:\"></constant>
<!-- Action所在包定义 -->
<package name="action" extends="struts-default">
<!-- Action名字，类以及导航页面定义 -->
<!-- 通过Action类处理才导航的的Action定义 -->
<action name="upload" class="action.UploadAction">
<result name="input">upload.jsp</result>
<result name="success">result.jsp</result>
</action>
</package>
</struts>
====================================
jsp
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<%@ taglib uri="/struts-tags" prefix="s" %>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>上传文件</title>
</head>
<body>
<!-- 上传文件表单定义 -->
<s:form action="upload" method="post" enctype="multipart/form-data">
<tr>
<!-- 上传文件标签定义 -->
<td>上传文件:<s:file name="file"></s:file></td>
</tr>
<tr>
<td>再次上传文件:<s:file name="file"></s:file></td>
</tr>
<tr>
<td align="left"><s:submit name="submit" value="提交"></s:submit></td>
</tr>
</s:form>
</body>
</html>
jsp
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<%@ taglib uri="/struts-tags" prefix="s" %>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>上传文件</title>
</head>
<body>
<!-- 上传文件表单定义 -->
<s:form action="upload" method="post" enctype="multipart/form-data">
<tr>
<!-- 上传文件标签定义 -->
<td>上传文件:<s:file name="file"></s:file></td>
</tr>
<tr>
<td>再次上传文件:<s:file name="file"></s:file></td>
</tr>
<tr>
<td align="left"><s:submit name="submit" value="提交"></s:submit></td>
</tr>
</s:form>
</body>
</html>
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