SpringBoot文件上传
前言：本文环境为SpringBoot+thymeleaf+layui,上传一个MP3文件
导入依赖
<dependency>
<groupId>commons-io</groupId>
<artifactId>commons-io</artifactId>
<version>2.4</version>
</dependency>
<dependency>
<groupId>commons-lang</groupId>
<artifactId>commons-lang</artifactId>
<version>2.6</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>
编写配置
server:
port: 9000
spring:
thymeleaf:
cache: false #关闭thymeleaf的缓存
application:
name: imooc-video-admin
datasource:
username: root
password: root
url: jdbc:mysql://localhost:3306/imooc_video_dev?useUnicode=true&characterEncoding=utf8&serverTimezone=Asia/Shanghai
driver-class-name: com.mysql.cj.jdbc.Driver
type: com.alibaba.druid.pool.DruidDataSource
servlet:
multipart: #设置文件上传的最大值
max-file-size: 20MB
max-request-size: 20MB
编写前端页面demo.html
<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head>
<meta charset="UTF-8">
<title>上传文件</title>
<link rel="stylesheet" href="https://www.layuicdn.com/layui/css/layui.css">
<script src="http://libs.baidu.com/jquery/2.0.0/jquery.min.js"></script>
</head>
<button type="button" class="layui-btn" id="test1" name="file" style="margin-left: 110px;margin-bottom: 15px" >
<i class="layui-icon"></i>上传音乐文件
</button>
<script src="https://www.layuicdn.com/layui/layui.js"></script>
<script>
layui.use('upload', function(){
var upload = layui.upload;
//执行实例
var uploadInst = upload.render({
elem: '#test1' //绑定元素
,accept: 'audio' //规定该按钮只能上传什么类型的文件
,url: '/admin/bgm/bgmUpload' //上传接口
,done: function(res){
//上传完毕回调
console.log(res);
var url = "http://localhost:9000"+res.data;
$("#bgmContent").html("<a href='"+url+"' target='_blank' style='text-decoration: underline'>点我播放</a>");
$("#path").attr("value",res.data);
}
,error: function(){
//请求异常回调
alert("上传文件出现错误");
}
});
});
</script>
</body>
</html>
编写Controller
package com.gt.admin.controller;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.gt.admin.entity.Bgm;
import com.gt.admin.service.impl.BgmServiceImpl;
import com.gt.admin.utils.Layui;
import com.gt.admin.utils.R;
import org.apache.commons.io.IOUtils;
import org.apache.commons.lang.StringUtils;
import org.apache.http.HttpResponse;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.multipart.MultipartFile;
import javax.servlet.http.HttpServletResponse;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.List;
@Controller
@RequestMapping("/admin/bgm")
public class BgmController {
@Autowired
private BgmServiceImpl bgmService;
@RequestMapping("/demo")
public String demo(){
return "demo";
}
@PostMapping("/bgmUpload")
@ResponseBody
public R addBgm(@RequestParam("file") MultipartFile[] files) throws IOException {
//文件保存的命名空间
String fileSpace = "C:" + File.separator + "imooc_videos_dev";
//文件在数据库中的路径
String uploadPathDB = File.separator + "bgm";
FileOutputStream fileOutputStream =null;
InputStream inputStream =null;
//判断文件是否为空
try {
if(files!= null && files.length>0){
//获取文件的名字 eg: C:/a.txt -> a.txt
String fileName = files[0].getOriginalFilename();
//判空
if(StringUtils.isNotBlank(fileName)){
//文件上传的最终保存路径
String finalPath = fileSpace + uploadPathDB + File.separator + fileName;
//设置数据库的保存路径
uploadPathDB += (File.separator + fileName);
File outFile = new File(finalPath);
if (outFile.getParentFile() != null || !outFile.getParentFile().isDirectory()) {
// 创建父文件夹
outFile.getParentFile().mkdirs();
}
fileOutputStream = new FileOutputStream(outFile);
inputStream = files[0].getInputStream();
IOUtils.copy(inputStream,fileOutputStream);
}
}else {
return R.error("上传出错");
}
} catch (IOException e) {
e.printStackTrace();
return R.error("上传出错");
} finally {
if (fileOutputStream != null) {
fileOutputStream.flush();
fileOutputStream.close();
}
if(inputStream!=null){
inputStream.close();
}
}
return R.ok().put("data",uploadPathDB);
}
}
Bgm实体类这里就不列出来了，大家可以自己去编写
演示结果
上传之前的文件夹
点击上传按钮并上传一首MP3之后
最后：这里只是保存了bgm文件到文件中，如果需要保存bgm信息到数据库中，应在前端编写表单获取bgm信息保存到数据库.