SpringMVC-文件下载

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文件下载

文件下载很简单，只要设置一下响应头即可

页面：

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<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>Title</title>
    <style>
        ul li {
            cursor: pointer;
        }
    </style>
</head>
<body>
<a href="javascript:">点击文字下载</a>
<ul id="ul">
    <c:forEach items="${fileList}" var="file">
        <li><a href="/fileDownLoad.do?fileName=${file}">${file}</a></li>
    </c:forEach>
</ul>
</body>
</html>

Controller：

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@GetMapping("/fileDownLoad.do")
public String fileDownLoad(String fileName,HttpServletRequest req,HttpServletResponse resp) throws IOException {
    String realPath = req.getServletContext().getRealPath("\\download")+"\\";
    File file = new File(realPath.concat(fileName));
    resp.setHeader("Content-disposition","attachment; filename="+ URLEncoder.encode(file.getName(),"UTF-8"));
    ServletOutputStream outputStream = resp.getOutputStream();
    FileInputStream fis = new FileInputStream(file);
    byte[] buffer = new byte[1024];
    int len=0;
    while((len=fis.read(buffer))>0){
        outputStream.write(buffer,0,len);
    }
    outputStream.flush();
    fis.close();
    outputStream.close();
    return "filedownload";
}

给作者买杯咖啡吧~~~