//准备文件
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <% String path = request.getContextPath(); String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/"; %> <%@ taglib prefix="s" uri="/struts-tags" %> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <base href="<%=basePath%>"> <title>文件上传</title> </head> <body> <!-- 上传页面的准备 --> <s:form action="upload.action" enctype="multipart/form-data" method="post"> <s:textfield name ="title" label ="标题"/><br/> <s:file name ="upload" label="选择文件"/><br/> <s:submit name ="submit" value ="上传文件"/> </s:form> </body> </html>
//在struts.xml中配置相应的action
<action name ="upload" class="action.UploadAction">
<!--通过param参数设置保存目录的路径 -->
<param name="savePath">/image</param>
<result name="success">/upload_success.jsp</result>
</action>
//在根据action节点找对应的类
package action; import java.io.File; import java.io.FileInputStream; import java.io.FileOutputStream; import org.apache.struts2.ServletActionContext; import com.opensymphony.xwork2.ActionSupport; public class UploadAction extends ActionSupport{ //封装上传文件的属性 private File upload; //封装上传文件的类型 private String uploadContentType; //封装上传文件的名称 private String uploadFileName; public File getUpload() { return upload; } public void setUpload(File upload) { this.upload = upload; } public String getUploadContentType() { return uploadContentType; } public void setUploadContentType(String uploadContentType) { this.uploadContentType = uploadContentType; } public String getUploadFileName() { return uploadFileName; } public void setUploadFileName(String uploadFileName) { this.uploadFileName = uploadFileName; } public void setSavePath(String savePath) { this.savePath = savePath; } //获取文件上传的路径 private String savePath; @Override public String execute() throws Exception { //创建缓存数组 byte [] buffer =new byte[1024]; //读取文件 FileInputStream fis =new FileInputStream(getUpload()); //保存文件，并设置保存目录的路径 FileOutputStream fos =new FileOutputStream(getSavePath()+"\"+this.getUploadFileName()); int length =fis.read(buffer); while(length>0){ //每次写入length长度的内容 fos.write(buffer,0,length); length=fis.read(buffer); } fis.close(); fos.flush(); fos.close(); return SUCCESS; } public String getSavePath(){ return ServletActionContext.getServletContext().getRealPath(savePath); } }
//如果成功就去找成功页面
<!--成功页面 --> 上传文件成功！ 您上传的文件是：<s:property value="uploadFileName"/><br/> 文件类型:<s:property value="uploadContentType"/>