本文主要是介绍struts2使用fileUpload拦截器实现文件上传，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！
Struts2为文件上传提供了支持，借助于fileUpload拦截器，很容易实现文件上传。
index.jsp页面需注意enctype
<%@ page language="java" import="java.util.*" pageEncoding="ISO-8859-1"%>
<%@ taglib prefix="s" uri="/struts-tags" %><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html><head></head><body><form action="upload" method="post" enctype="multipart/form-data">Choose your file<input type="file" name="myFile"/><input type="submit" value="submit"/></form></body>
</html><%@ page language="java" import="java.util.*" pageEncoding="ISO-8859-1"%>
<%@ taglib prefix="s" uri="/struts-tags" %><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html><head></head><body>Upload file <s:property value="myFileFileName"/> succeed!</body>
</html><%@ page language="java" import="java.util.*" pageEncoding="ISO-8859-1"%>
<%@ taglib prefix="s" uri="/struts-tags" %><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html><head></head><body>Upload file failed!</body>
</html>Action类
import java.io.File;import org.apache.commons.io.FileUtils;import com.opensymphony.xwork2.ActionSupport;public class UploadFile extends ActionSupport {/** 注意命名要与jsp文件中的name对应* 假设jsp中,name为xx，那么拦截器可使用的三个参数,命名应为xx,xxFileName,xxContentType*/private File myFile;private String myFileFileName;private String myFileContentType;@Overridepublic String execute() {// TODO Auto-generated method stubString finalPath = "E:/uploadFile";try {File finalFile = new File(finalPath, myFileFileName);FileUtils.copyFile(myFile, finalFile);} catch (Exception e) {e.printStackTrace();return ERROR;}return SUCCESS;}public File getMyFile() {return myFile;}public void setMyFile(File myFile) {this.myFile = myFile;}public String getMyFileFileName() {return myFileFileName;}public void setMyFileFileName(String myFileFileName) {this.myFileFileName = myFileFileName;}public String getMyFileContentType() {return myFileContentType;}public void setMyFileContentType(String myFileContentType) {this.myFileContentType = myFileContentType;}}
最后是struts.xml
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.1//EN" "http://struts.apache.org/dtds/struts-2.1.dtd">
<struts><constant name="struts.devMode" value="true" /><constant name="struts.ui.theme" value="simple" /><constant name="struts.i18n.encoding" value="UTF-8" /><package name="test" namespace="/" extends="struts-default"><action name="upload" class="UploadFile"><!-- 配置fileUpload拦截器 --><interceptor-ref name="fileUpload"><!-- 文件类型 --><param name="allowedTypes">image/x-png,image/gif,image/pjpeg</param><!-- 文件大小，单位是字节--><param name="maximumSize">1025956</param></interceptor-ref><!-- 必须要有默认拦截器--><interceptor-ref name="defaultStack" /><result name="success">/success.jsp</result><result name="error">/error.jsp</result></action></package></struts> 这篇关于struts2使用fileUpload拦截器实现文件上传的文章就介绍到这儿，希望我们推荐的文章对编程师们有所帮助！
