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Spring 实现文件上传与下载

2012-07-25 16:30 399 查看
文件上传

upload.jsp:

<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ include file="/taglibs.jsp"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>

<h2 >
文件上传
</h2>

<div class="pageContent">
<form method="post" action="/dhcss/ssp/upload/upload.do" enctype="multipart/form-data">

<div class="pageFormContent nowrap" layoutH="97">
<input type="hidden" name="name" />
<input type="file" name="file"/>
<div class="divider"></div>
<p>自定义扩展请参照：dwz.validate.method.js</p>
<p>错误提示信息国际化请参照：dwz.regional.zh.js</p>
</div>
<div class="formBar">
<ul>
<li><div class="buttonActive">
<div class="buttonContent">
<button type="submit">提交</button>
</div>
</div></li>
<li><div class="button">
<div class="buttonContent">
<button type="button" class="close">取消</button>
</div>
</div></li>
</ul>
</div>

</form>
</div>

</body>
</html>


java 上传代码;

package com.dhcc.dhcss.ssp.sm;

import java.io.File;
import java.util.Date;

import javax.servlet.ServletContext;
import javax.servlet.http.HttpServletRequest;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.context.ServletContextAware;
import org.springframework.web.multipart.commons.CommonsMultipartFile;

@Controller //声明该类为控制器类
@RequestMapping("/ssp/upload")
public class FileUploadController implements ServletContextAware{ //实现ServletContextAware接口，获取本地路径

private ServletContext servletContext;

public void setServletContext(ServletContext servletContext) { //实现接口中的setServletContext方法
this.servletContext = servletContext;
}

@RequestMapping(value = "/upload", method = RequestMethod.POST) //将文件上传请求映射到该方法
public String handleFormUpload(@RequestParam("name") String name, //设置请求参数的名称和类型
@RequestParam("file") CommonsMultipartFile mFile,HttpServletRequest req) { //请求参数一定要与form中的参数名对应
if (!mFile.isEmpty()) {
//String path = this.servletContext.getRealPath("/");  //获取本地存储路径
//  String path="/home/chen/";
String pc=req.getServletContext().getRealPath("/WEB-INF/conf.properties");
Configuration rc = new Configuration(pc);//相对路径
String path=rc.getValue("path");
System.out.println(path);

//File file = new File(path + new Date().getTime() + ".jpg"); //新建一个文件
File file = new File(path + new Date().getTime()); //新建一个文件
System.out.println(file.getAbsolutePath());
try {
mFile.getFileItem().write(file); //将上传的文件写入新建的文件中
} catch (Exception e) {
e.printStackTrace();
}

return "ssp/sm/uploadSuccess"; //返回成功视图
}else {
return "ssp/sm/uploadFail"; //返回失败视图
}
}

public void setServletContext1(ServletContext arg0) {
// TODO Auto-generated method stub

}
}
uploadSuccess.jsp:
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
<h3 align='center'><font color='red'>上传成功，请去主文件夹下查看～～</font></h3>
<a href="http://localhost:8080/dhcss">返回首页</a>
</body>
</html>





uploadFail.jsp:

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
<h3 align='center'><font color='red'>上传失败～～</font></h3>
<a href="http://localhost:8080/dhcss">返回首页</a>
</body>
</html>


-------------------------------------------------------------------------------------------

download.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<script type="text/javascript" src="../../js/jquery-1.7.1.js"></script>
<title>upload</title>
</head>
<body>
<h2 >
文件下载
</h2>
<div>
<div class="pageFormContent nowrap" layoutH="97">
请输入文件夹下要下载的文件名（限英文名）
<input id='fileName' type="text" name="fileName" />

<div class="divider"></div>
<p>自定义扩展请参照：dwz.validate.method.js</p>
<p>错误提示信息国际化请参照：dwz.regional.zh.js</p>
</div>

<div class="formBar">
<ul>
<li><div class="buttonActive">
<div class="buttonContent">
<a id="btn" href="/dhcss/download.do" target="blank"><button>下载</button></a>
</div>
</div></li>
<li><div class="button">
<div class="buttonContent">
<button type="button" class="close">取消</button>
</div>
</div></li>
</ul>
</div>

</div>
</body>
<script type="text/javascript">
$(function(){
$('a').click(function(){
var link=this.href+'?'+'fileName='+$('#fileName').val();
window.open(link);
return false;
});
});
</script>
</html>


java 文件下载代码：

package com.dhcc.dhcss.ssp.sm;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;

@Controller
public class FileDownloadController {

//static final String dir = "/home/chen/";

@RequestMapping("download.do")
public void downloadFile(@RequestParam String fileName,HttpServletResponse response,HttpServletRequest req){
response.setCharacterEncoding("utf-8");
response.setContentType("multipart/form-data");

response.setHeader("Content-Disposition", "attachment;fileName="+fileName);
String pc=req.getServletContext().getRealPath("/WEB-INF/conf.properties");
Configuration rc = new Configuration(pc);//相对路径
String dir=rc.getValue("path");
try {
File file=new File(dir+fileName);
System.out.println(file.getAbsolutePath());
InputStream inputStream=new FileInputStream(file);
OutputStream os=response.getOutputStream();
byte[] b=new byte[1024];
int length;
while((length=inputStream.read(b))>0){
os.write(b,0,length);
}
inputStream.close();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
}  
                                            

                                        

                        
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                         标签： 
                                                spring
                                                class
                                                import
                                                string
                                                file
                                                path
                                                

                        

                    


                

            


            

                
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