ssh框架实现文件上传下载实例代码

ssh框架实现文件上传下载实例代码

最近在学习ssh框架，我用ssh框架写了一个文件上传下载的实例代码，有需要了解的朋友可参考。希望此文章对各位有所帮助。

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package com.cpsec.tang.chemical.action;

import java.io.BufferedReader;

import java.io.BufferedWriter;

import java.io.File;

import java.io.FileInputStream;

import java.io.FileOutputStream;

import java.io.IOException;

import java.io.InputStream;

import java.io.InputStreamReader;

import java.io.OutputStreamWriter;

import org.apache.commons.io.FileUtils;

import org.apache.struts2.ServletActionContext;

import org.springframework.stereotype.Controller;

import com.opensymphony.xwork2.ActionSupport;

@Controller("newFileAction")

public class NewFileAction extends ActionSupport {

private File file;//文件

private String fileFileName;//文件名称

private String fileContentType; //文件类型

private String filename;

private InputStream inputStream;

public String newFile(){

File dir=new File(ServletActionContext.getServletContext().getRealPath("files"));

//判断文件是否上传，如果上传的话将会创建该目录

if(!dir.exists()){

dir.mkdir(); //创建该目录

}

System.out.println(file);

System.out.println(fileFileName);

//第一种文件上传的方法

//声明文件输入流，为输入流指定文件路径

//获取输出流，获取文件的文件地址及名称

FileInputStream in=null;

FileOutputStream out=null;

try{

in= new FileInputStream(file);

out=new FileOutputStream(dir + "\\" +fileFileName);

byte[] b=new byte[1024*1024];//每次写入的大小

int i=0;

while((i=in.read(b))>0){

out.write(b,0,i);

}

in.close();

out.close();

}catch(Exception e){

e.printStackTrace();

}finally{

}

/*//第二种文件上传的方法

try {

FileUtils.copyFile(file,new File(dir,fileFileName));

} catch (IOException e) {

e.printStackTrace();

}

//第三种方法

BufferedReader bReader=null;

BufferedWriter bWriter=null;

try{

bReader = new BufferedReader(new InputStreamReader(new FileInputStream(file)));

bWriter = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(dir+"\\"+fileFileNdORZvRIame)));

char[] str=new char[1024*1024];

int i=0;

while((i=bReader.read(str))>0){

bWriter.write(str,0,i);

}

bReader.close();

bWriter.close();

dir.delete();

}catch(Exception e){

e.printStackTrace();

}finally{

} */

return SUCCESS;

}

public String downFile(){

System.out.println(filename);

inputStream=ServletActionContext.getServletContext().getResourceAsStream("/files/"+filename);

System.out.println(inputStream);

return SUCCESS;

}

public File getFile() {

return file;

}

public void setFile(File file) {

this.file = file;

}

public String getFileFileName() {

return fileFileName;

}

public void setFileFileName(String fileFileName) {

this.fileFileName = fileFileName;

}

public String getFileContentType() {

return fileContentType;

}

public void setFileContentType(String fileContentType) {

this.fileContentType = fileContentType;

}

public String getFilename() {

return filename;

}

public void setFilename(String filename) {

this.filename = filename;

}

public InputStream getInputStream() {

return inputStreadORZvRIm;

}

public void setInputStream(InputStream inputStream) {

this.inputStream = inputStream;

}

}

"-//Apache Software Foundation//DTD Struts Configuration 2.3//EN"

"http://struts.apache.org/dtds/struts-2.3.dtd">

application/octet-stream;charset=ISO8859-1

inputStream

attachment;filename=${filename}

4096

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