标签：
文件上传要求：
首先，写一个upload.jsp：
引入标签库：
<%@ taglib uri="/struts-tags" prefix="s"%>
body体中（struts标签默认表单提交方式为post）：
<body> <s:form action="upload" enctype="multipart/form-data"> <s:file name="file"></s:file> <s:submit value="submit"></s:submit> </s:form> </body>
对应的UploadAction为：
package com.test.action;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.OutputStream;
import com.opensymphony.xwork2.ActionSupport;
public class UploadAction extends ActionSupport
{
private File file; // 对应真正上传的文件
private String fileFileName; // 对应上传的文件名
public File getFile()
{
return file;
}
public void setFile(File file)
{
this.file = file;
}
public String getFileFileName()
{
return fileFileName;
}
public void setFileFileName(String fileFileName)
{
this.fileFileName = fileFileName;
}
@Override
public String execute() throws Exception
{
InputStream is = new FileInputStream(file);
OutputStream os = new FileOutputStream("E:\\Desktop\\" + fileFileName);
byte[] buffer = new byte[1024];
int length = 0;
while(-1 != (length = is.read(buffer)))
{
os.write(buffer, 0, length);
}
os.close();
is.close();
return SUCCESS;
}
}
结果页面很简单uploadResult.jsp：
<body>
Upload success~~
</body>
struts对应的配置为：
<action name="upload" class="com.test.action.UploadAction"> <result name="success">/uploadResult.jsp</result> </action>
web.xml一如既往从struts的部分开始就没变过：
<?xml version="1.0" encoding="UTF-8"?> <web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"> <filter> <filter-name>struts2</filter-name> <filter-class> org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter </filter-class> </filter> <filter-mapping> <filter-name>struts2</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> </web-app>
最后引入struts2中的第三方JAR包，在原有六个包的情况下，添加commons-io-1.3.2.jar，打开http://localhost:8080/struts2/upload.jsp，选择文件即可完成上传。
标签：
原文地址：http://www.cnblogs.com/Code-Rush/p/4669962.html
