struts2实现文件批量上传功能

1、--------------------------------------------jsp页面显示部分-------------------------------------------------------------------------

<s:form action="upload" name="upForm" method="post" enctype="multipart/form-data">

<s:textfield name="title" label="文件标题" /><br/>

<s:file name="file" label="选择文件1" />

<s:file name="file" label="选择文件2" />

<s:file name="file" label="选择文件3" />

<s:submit value="上传"/>

</s:form>

2--------------------------------------------action类----------------------------------------------------------------------------------------

public class uplaodAction extends ActionSupport{

private List<File> file;

private List<String> fileFileName;

private List<String> fileContentType;

//这个属性是配置struts.xml文件来注入的

private String savePath;

public void setSavePath(String value){

this.savePath=value;

}

public String getSavePath(){

return ServletActionContext.getServletContext().getRealPath("/WEB-INF/"+savePath);

}

public String execute() throws Exception {

System.out.println("看看路径"+getSavePath());

try{

//循环写入

for(int i=0;i<file.size();i++){

//以服务器的文件保存地址和原文件名建立上传文件输出流

FileOutputStream fos=new FileOutputStream(getSavePath()+"\\"+this.getFileFileName().get(i));

//建立输入流

FileInputStream fis=new FileInputStream(file.get(i));

//建立缓冲区

byte[] buffer=new byte[1024];

int length=0;

//循环从缓冲区读取内容到输入流中

while((length=fis.read(buffer))>0){

fos.write(buffer, 0, length);

}

}

}catch(Exception e){

e.printStackTrace();

}

return SUCCESS;

}

注：部分属性的getter和setter方法省略

3、-----------------------------------------------------struts.xml文件内容-------------------------------------------------------

//配置该应用使用的编码格式

<constant name="struts.custom.il8n.resources" value="mess" />

<constant name="struts.il8n.encoding" value="utf-8"></constant>

<action name="upload" class="com.test.action.uplaodAction">

<param name="savePath">/upload</param>

<result name="success">success.jsp</result>

</action>

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注：批量上传和单个文件上传的区别是多了一个for循环