采用hutool后端返回文件流供前端下载

最新推荐文章于 2024-07-19 14:37:08 发布

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最新推荐文章于 2024-07-19 14:37:08 发布

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文章标签：前端 java

本文链接：https://blog.youkuaiyun.com/Crush_kylin/article/details/124691152

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文章目录

1、导入依赖

<!--hutool-->
		<dependency>
			<groupId>cn.hutool</groupId>
			<artifactId>hutool-all</artifactId>
			<version>5.7.20</version>
		</dependency>
		<dependency>
			<groupId>org.apache.poi</groupId>
			<artifactId>poi-ooxml</artifactId>
			<version>4.1.2</version>
		</dependency>

2、代码

import java.net.URLDecoder;
import org.apache.commons.io.IOUtils;


    /**
     * 下载房源信息导入模板
     * @param request
     * @param response
     * @throws Exception
     */
    @Override
    public void downLoadPropertyExcel(HttpServletRequest request,HttpServletResponse response) throws Exception {
        String fileName = "房源信息导入模板.xlsx";
        fileName = URLDecoder.decode(fileName, "UTF-8");
        InputStream in = this.getClass().getResourceAsStream("/template/房源信息导入模板.xlsx");
        String filenamedisplay = URLEncoder.encode(fileName, "UTF-8");
        response.setContentType("text/html;charset=utf-8");
        request.setCharacterEncoding("UTF-8");
        response.setHeader("Content-Disposition", "attachment; filename=" + filenamedisplay);
        response.setContentType("application/x-download;charset=utf-8");
        OutputStream out = response.getOutputStream();
        IOUtils.copy(in, out);
        out.flush();
        in.close();
    }

3、前端测试

<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
	</head>
	<body>
		<!-- 以下两种方式都可 -->
		<button id="downLoad">下载</button>
		<a href="http://127.0.0.1:8055/yxroom/directSeeding/downLoadBuyerExcel">点击下载文件</a>
		
	</body>
	<script>
		document.getElementById('downLoad').onclick = function(){
			alert("开始下载");
			// window.location.href = 'http://127.0.0.1:8055/yxroom/directSeeding/downLoadPropertyExcel';
			window.location.href = 'http://127.0.0.1:8055/yxroom/directSeeding/downLoadBuyerExcel';
		}
	</script>
</html>