以文件流的方式 文件上传 下载
HTML:
<div class="box-body">
<form id="upload_form" enctype="multipart/form-data" action="/wjgl/fileSave" method="post">
<!-- 上传用户编号 -->
<input type="hidden" name="userMark" value="${staff.userMark}"/>
<!-- 借款编号 -->
<input type="hidden" name="qujkId" value="${qyjk.id}"/>
<input type="hidden" name="tabId" value="9"/>
<table>
<tr>
<td>备注</td>
<td><input type ="text" name="details" id="details"/></td>
<td><input type="file" id="upC" name="fileUp" onclick="fileDetail()" onchange="fileUpLoad()" /></td>
</tr>
</table>
</form>
<!-- 图片回显 -->
<div>
<!-- <a class="btn btn-primary" id="fileAdd" onClick="tableCreate(‘tab‘,-1)">增加</a>-->
</div>
<table class="table table-bordered" id="tab">
<tr align="left" >
<th>文件编号</th>
<th >文件名</th>
<th >文件类型</th>
<th >上传时间</th>
<th >备注</th>
<th >操作</th>
</tr>
<c:if test="${ empty fkWdglXist}">
<tr align="left">
<td align="center" colspan="6">没有上传任何文件</td>
</tr>
</c:if>
<c:forEach var="fkWdg" items="${fkWdglXist}">
<tr align="left">
<td>${fkWdg.wjId }</td>
<td>${fkWdg.clMc}</td>
<td>${fkWdg.clFl }</td>
<td>${fkWdg.scRq }</td>
<td>${fkWdg.detail}</td>
<td>
<a href="/wjgl/downLoad?fileId=${ fkWdg.wjId} " class="btn btn-primary" id="down" margin-left:10px>下载</a>
<a class="btn btn-primary" id="fileDel" name="trDe" onClick="delTr(${fkWdg.wjId})">删除</a>
</td>
</tr>
</c:forEach>
</table>
</div>
JAVA:
package net.zkbc.scd.mgt.controller;
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import net.zkbc.scd.mgt.entity.FkWdckX;
import net.zkbc.scd.mgt.entity.FkWdglX;
import net.zkbc.scd.mgt.service.FkWdckxService;
import net.zkbc.scd.mgt.service.FkWdglxService;
import net.zkbc.scd.security.entity.User;
import net.zkbc.scd.security.service.UserService;
import org.apache.commons.fileupload.disk.DiskFileItem;
import org.apache.shiro.SecurityUtils;
import org.springframework.beans.factory.annotation.Autowired;
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.bind.annotation.ResponseBody;
import org.springframework.web.multipart.MultipartFile;
import org.springframework.web.multipart.commons.CommonsMultipartFile;
/**
* 文档管理
* @author Lizuoqi
*/
@Controller
@RequestMapping(value = "/wjgl")
public class FileManagerController {
//文档
@Autowired
private FkWdckxService fkWdckxService;
//文档
@Autowired
private FkWdglxService fkWdglxService;
@Autowired
private UserService userService;
/**
* 上传文件
* */
@ResponseBody
@RequestMapping(value ="/fileSave",method = RequestMethod.POST)
public String fileSave(@RequestParam MultipartFile fileUp,String userMark,Long qujkId,HttpServletRequest request,HttpSession session){
//文档表
FkWdckX fkWdckx = new FkWdckX();
//文档管理表
FkWdglX fkWdglX = new FkWdglX();
//转换为file类型
CommonsMultipartFile cf= (CommonsMultipartFile)fileUp;
DiskFileItem fi = (DiskFileItem)cf.getFileItem();
File f = fi.getStoreLocation();
String filename = fileUp.getOriginalFilename();
InputStream inputStream;
try {
//设置上传时间取毫秒
SimpleDateFormat sdf=new SimpleDateFormat("yyyyMMddhhmmssSSS");
try {
Date time = sdf.parse(sdf.format(new Date()));
fkWdglX.setScRq(time);
} catch (ParseException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
inputStream = fi.getInputStream();
byte[] b = new byte[1048576];
int length = inputStream.read(b);
String path = "E:\\upload";
path += "\\" + filename;
// 文件流写到服务器端
FileOutputStream outputStream = new FileOutputStream(path);
outputStream.write(b, 0, length);
//关闭文档写入留
inputStream.close();
outputStream.close();
//设置文件url
fkWdckx.setUrl(path);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
//设置文件名称
fkWdckx.setFileName(filename);
//保存上传文件
fkWdckxService.save(fkWdckx);
//查询到文档相关信息
FkWdckX fkwd = fkWdckxService.findByFileName(filename);
//保存文档管理
fkWdglX.setWjId(fkwd.getId());//文件id
fkWdglX.setJkBh(qujkId); //借款id
//获取当前登录用户的名字
String username=(String) SecurityUtils.getSubject().getPrincipal();
User user = userService.findByLoginName(username);
//设置上传用户id
fkWdglX.setScyhBh(user.getUserMark());
//保存文档管理表
fkWdglxService.save(fkWdglX);
return "2";
}
/**
* 下载文件
* */
@ResponseBody
@RequestMapping(value ="/downLoad")
public String downLoad(String fileName, HttpServletResponse response){
String path = "E:\\upload\\new 1.txt";
try {
// path是指欲下载的文件的路径。
File file = new File(path);
// 取得文件名。
String filename = file.getName();
// 取得文件的后缀名。
String ext = filename.substring(filename.lastIndexOf(".") + 1).toUpperCase();
// 以流的形式下载文件。
InputStream fis = new BufferedInputStream(new FileInputStream(path));
byte[] buffer = new byte[fis.available()];
fis.read(buffer);
fis.close();
// 清空response
response.reset();
// 设置response的Header
response.addHeader("Content-Disposition", "attachment;filename=" + new String(filename.getBytes()));
response.addHeader("Content-Length", "" + file.length());
OutputStream toClient = new BufferedOutputStream(response.getOutputStream());
response.setContentType("application/octet-stream");
toClient.write(buffer);
toClient.flush();
toClient.close();
} catch (IOException ex) {
ex.printStackTrace();
}
return "";
}
}
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