本文介绍如何使用Struts2框架实现多文件上传功能，包括前端页面设计、后端Action处理逻辑及struts.xml配置。通过示例代码详细解释了多文件上传的具体步骤。
Struts2文件上传和多文件的上传
第一步：首先先写界面
</head>
<div>
<form action="upFiles.action" enctype="multipart/form-data" method="post"/>
<div id="adds">
上传文件：<input type="file" name="upload"/></br>
</div>
<input type="submit" value="上传"/>
<input type="button" value="添加" id="but">
</form>
</div>
<body>
</body>
</html>
<script type="text/javascript">
<!--
$(document).ready(function(){
$("#but").click(function (){
var $add=$("<input type='file' name='upload'/></br>")
var $text=$("<p>上传文件<p>");
$("#adds").append($text);
$("#adds").append($add);
});
});
//-->
</script>
第二步
在Action类中添加以下属性
package cn.csdn.hr.action.uplaod;
import java.io.File;
import java.io.IOException;
import java.util.List;
import org.apache.commons.io.FileUtils;
import org.apache.struts2.ServletActionContext;
import com.opensymphony.xwork2.ActionSupport;
import com.sun.net.httpserver.Authenticator.Success;
public class UploadListActions extends ActionSupport{
//规定
//文件内容
private List<File> upload;
//类
private List<String> uploadContentType;
//文件名称
private List<String> uploadFileName;
public List<File> getUpload() {
return upload;
}
public void setUpload(List<File> upload) {
this.upload = upload;
}
public List<String> getUploadContentType() {
return uploadContentType;
}
public void setUploadContentType(List<String> uploadContentType) {
this.uploadContentType = uploadContentType;
}
public List<String> getUploadFileName() {
return uploadFileName;
}
public void setUploadFileName(List<String> uploadFileName) {
this.uploadFileName = uploadFileName;
}
public String uploads(){
String path =ServletActionContext.getServletContext().getRealPath("/im");
File file=new File(path);
if(!file.exists()){
file.mkdirs();
}
try {
for(int i=0;i<upload.size();i++){
FileUtils.copyFile(upload.get(i), new File(file,uploadFileName.get(i)));
}
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
System.out.println("文件上传的名称"+getUploadFileName()+"上传的类型"+getUploadContentType());
return SUCCESS;
}
}
第三步：struts.xml中添加配置
<package name="text" extends="struts-default" namespace="/">
<action name="upFile" class="cn.csdn.hr.action.uplaod.UploadAction" method="upload">
<result>./MyJsp.jsp</result>
</action>
<!--
-->
<action name="upFiles" class="cn.csdn.hr.action.uplaod.UploadListActions" method="uploads">
<result>./MyJsp.jsp</result>
</action>
</package>
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