Struts2文件上传配置教程Demo代码下载

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion>
<groupId>zuidaima</groupId>
<artifactId>Structs-FileUpLoad</artifactId>
<version>0.0.1-SNAPSHOT</version>
<url>http://maven.apache.org</url>

<dependencies>

<dependency>
<groupId>com.sun</groupId>
<artifactId>tools</artifactId>
<version>1.5.0</version>
</dependency>

<dependency>
<groupId>org.apache.struts</groupId>
<artifactId>struts2-core</artifactId>
<version>2.3.1.2</version>
</dependency>

<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>2.5</version>
<scope>provided</scope>
</dependency>

</dependencies>

</project>

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
"http://struts.apache.org/dtds/struts-2.0.dtd">

<struts>
<constant name="struts.multipart.saveDir" value="c:/upload"></constant>
<constant name="struts.action.extension" value="html" />
<constant name="struts.devMode" value="true" />
<constant name="struts.custom.i18n.resources" value="global" />

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

<action name="index" >
<result >/WEB-INF/views/fileupload.jsp</result>
</action>

<action name="fileUpload"    class="com.zuidaima.fileupload.controller.FileUploadAction">
<param name="uploadDir">/WEB-INF/upload</param>
<result name="SUCCESS">/WEB-INF/views/success.jsp</result>
</action>

</package>
</struts>

package com.zuidaima.fileupload.controller;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.OutputStream;
import org.apache.struts2.ServletActionContext;

import com.opensymphony.xwork2.ActionSupport;

/**
*
* @author dyl
*
*/
public class FileUploadAction extends ActionSupport {

private static final long serialVersionUID = 1L;

private File fileUpload;
private String fileUploadContentType;
private String fileUploadFileName;
private String uploadDir;

public String getFileUploadContentType() {
return fileUploadContentType;
}

public void setFileUploadContentType(String fileUploadContentType) {
this.fileUploadContentType = fileUploadContentType;
}

public String getFileUploadFileName() {
return fileUploadFileName;
}

public void setFileUploadFileName(String fileUploadFileName) {
this.fileUploadFileName = fileUploadFileName;
}

public File getFileUpload() {
return fileUpload;
}

public void setFileUpload(File file) {
this.fileUpload = file;
}

public String getUploadDir() {
return uploadDir;
}

public void setUploadDir(String uploadDir) {
this.uploadDir = uploadDir;
}

public String execute() throws Exception {
String newFileName = null;
long now = System.currentTimeMillis();
// 得到保存上传文件的目录的真实路径
File dir = new File(ServletActionContext.getServletContext()
.getRealPath(uploadDir));
// 如果该目录不存在，就创建
if (!dir.exists()) {
dir.mkdirs();
}

// 为避免重名文件覆盖，判断上传文件是否有扩展名，以时间戳作为新的文件名
int index = fileUpload.getName().lastIndexOf(".");

if (index != -1) {
newFileName = now + fileUpload.getName().substring(0,index);
} else {
newFileName = Long.toString(now);
}

InputStream is = null;
OutputStream os = null;
try {
// 读取保存在临时目录下的上传文件，写入到新的文件中
is = new FileInputStream(fileUpload);
os = new FileOutputStream(new File(dir, newFileName));

byte[] buf = new byte[1024];

int len = -1;

while ((len = is.read(buf)) != -1) {
os.write(buf, 0, len);
}
//删除临时文件
fileUpload.delete();
} finally {
is.close();
os.close();
}
return "SUCCESS";
}

public String display() {
return "NONE";
}
}