Struts2实现多文件上传

strus2 配置文件

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 {

//封装文件标题请求参数的属性
private String title;

//封装上传文件域的属性
private File[] upload;

//封装上传文件类型的属性
private String[] uploadContentType;

//封装上传文件名的属性
private String[] uploadFileName;

//直接在struts.xml文件中配置的属性
private String savePath;

private String allowType;


//返回上传文件的保存位置
public String getSavePath() throws Exception{
return ServletActionContext.getServletContext().getRealPath(savePath);
}


//接受struts.xml文件配置值的方法
public void setSavePath(String savePath) {
this.savePath = savePath;
}

public String upload() throws Exception {

for(int i=0;i<upload.length;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
FileInputStream fis = new FileInputStream(upload[i]);
FileOutputStream fos = new FileOutputStream(getSavePath() + "\\"
+ getTitle()+uploadFileName[i]);

System.out.println(getUploadFileName()+"=================");

byte[] buffer = new byte[1024];
int len = 0;
while ((len = fis.read(buffer)) > 0) {
fos.write(buffer, 0, len);
}
fos.close();
fis.close();
}

return SUCCESS;

}







//文件标题的setter和getter方法
public String getTitle() {
return title;
}




public void setTitle(String title) {
this.title = title;
}

//上传文件对应文件内容的setter和getter方法
public File[] getUpload() {
return upload;
}

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

//上传文件的文件类型的setter和getter方法
public String[] getUploadContentType() {
return uploadContentType;
}

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

//上传文件的文件名的setter和getter方法
public String[] getUploadFileName() {
return uploadFileName;
}

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


public String getAllowType() {
return allowType;
}


public void setAllowType(String allowType) {
this.allowType = allowType;
}




}

struts.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.3//EN"
"http://struts.apache.org/dtds/struts-2.3.dtd">
<struts>

<!-- 国际化 -->
<constant name="struts.custom.i18n.resources" value="mess" />
<!-- 设置该应用使用的解码集 -->
<constant name="struts.i18n.encoding" value="UTF-8" />

<package name="upload1" extends="struts-default">

<!-- 配置处理文件上传的Action -->
<action name="upload" class="action.UploadAction" method="upload">

<!-- 动态设置Action的属性值 -->
<param name="savePath">/uploadFiles</param>

<interceptor-ref name="fileUpload">
<!-- 配置允许上传的文件类型 -->
<param name="allowedTypes">image/png,image/gif,image/jpeg,image/jpg</param>
<!-- 配置允许上传的文件大小 -->
<param name="maximumSize">20000</param>
</interceptor-ref>

<!--配置内部的拦截器, -->
<interceptor-ref name="defaultStack" />


<!-- 配置Struts 2默认的视图页面 -->
<result>/succ.jsp</result>

<!-- 拦截器调用 -->
<result name="input">/index.jsp</result>
</action>

</package>

</struts>

jsp 页面

index.jsp

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@ taglib prefix="s" uri="/struts-tags"%>


<html>
  <head>


    <title>简单的文件上传</title>

  </head>

  <body>
     <s:fielderror/>

     <s:form action="/upload" enctype="multipart/form-data">
      <s:textfield name="title" label="文件标题"/>
      <s:file name="upload" label="选择文件"/>
      <s:file name="upload" label="选择文件"/>
      <s:file name="upload" label="选择文件"/>
      <s:submit value="上传"/>

     </s:form>
  </body>
</html>

succ.jsp

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@ taglib prefix="s" uri="/struts-tags"%>


<html>
  <head>


    <title>上传成功</title>

  </head>

  <body>

      上传成功<br/>
        文件标题:<s:property value=" +title"/><br/>
        文件为： <img src="<s:property value=" 'uploadFiles/' +uploadFileName"/>"/><br/>  

  </body>
</html>

国际化：

mess.properties

#\u6539\u53D8\u6587\u4EF6\u7C7B\u578B\u4E0D\u5141\u8BB8\u7684\u63D0\u793A\u4FE1\u606F
struts.messages.error.content.type.not.allowed=\u60A8\u4E0A\u4F20\u7684\u6587\u4EF6\u7C7B\u578B\u53EA\u80FD\u662F\u56FE\u7247\u6587\u4EF6\uFF01\u8BF7\u91CD\u65B0\u9009\u62E9\uFF01
#\u6539\u53D8\u4E0A\u4F20\u6587\u4EF6\u592A\u5927\u7684\u63D0\u793A\u4FE1\u606F
struts.messages.error.file.too.large=\u60A8\u8981\u4E0A\u4F20\u7684\u6587\u4EF6\u592A\u5927\uFF0C\u8BF7\u91CD\u65B0\u9009\u62E9\uFF01

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Struts2实现多文件上传

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