java struts2入门学习实例--使用struts2快速实现多个文件上传

一、错误提示信息配置

昨天说到更改默认错误配置信息，我测试很多遍，一直都不对。下面贴出来，待以后有好方法了再补充吧。

首先新建一个properties文件，这里命名为testupload.properties,内容为：

struts.messages.error.file.too.large=\文\件\太\大{0} \\{3}

struts.messages.error.content.type.not.allowed=\文\件\类\型\不\允\许! {0} \\{3}

struts.messages.error.file.extension.not.allowed=\不\允\许\的\扩\展\名! {0} \\{3}

这里将默认提示信息改为中文的。upload.xml中内容如下：

\Software Foundation//DTD Struts Configuration 2.3//EN\ \>

二、多个文件上传

只需要更改upload.jsp中的部分内容即可：

<%@ page language=\ contentType=\charset=UTF-8\ pageEncoding=\%>

<%@ taglib uri=\ prefix=\ %>

www.qqok8.com

Insert title here

结果如下所示：

也可以将UploadAction.java中的file改为数组类型的，如下所示：

package action;

import java.io.File;

import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.InputStream; import java.io.OutputStream; http://mingzi.78name.com

import javax.servlet.ServletContext;

import org.apache.struts2.ServletActionContext;

import com.opensymphony.xwork2.ActionSupport; /**

* @ClassName: UploadAction * @Description: 文件上传 * @author: amosli

* @email:amosli@infomorrow.com * @date Jan 14, 2014 1:50:28 AM */

public class UploadAction extends ActionSupport {

private static final long serialVersionUID = -8920466592471253212L; private String username;// 用户名

private String[] uploadContentType;// 上传文件的类型,(Fileupload拦截器传入的参数)

private File[] upload;// 上传的文件,(Fileupload拦截器传入的参数)

private String[] uploadFileName;// 上传文件的真实文件名，(Fileupload拦截器传入的参数)

public void setUsername(String username) { this.username = username; }

public String[] getUploadContentType() { return uploadContentType; }

public void setUploadContentType(String[] uploadContentType) { this.uploadContentType = uploadContentType; }

public File[] getUpload() { return upload; }

public void setUpload(File[] upload) { this.upload = upload; }

public String[] getUploadFileName() { return uploadFileName; }

public void setUploadFileName(String[] uploadFileName) { this.uploadFileName = uploadFileName; }

public String getUsername() { return username; }

public String uploadMethod() throws Exception {

ServletContext context = ServletActionContext.getServletContext(); String real_path = context.getRealPath(\); for (int i = 0; i < upload.length; i++) {

InputStream inputStream = new FileInputStream(upload[i]);

OutputStream outputStream = new FileOutputStream(real_path + \/\+ uploadFileName);

byte[] b = new byte[1024]; int len = 0;