SpringBoot系列八、文件上传-优快云博客

本文链接：https://blog.youkuaiyun.com/qq_36630853/article/details/86566716

一、创建上传页面upload.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>

<form enctype="multipart/form-data" method="post" action="/upload">
    文件：<input type="file" name="file">
    姓名：<input type="text" name="name">
    <input type="submit" value="提交">
</form>
</body>
</html>

二、创建controller

@RestController
public class UploadController {

	//上传到具体的地址
    private static final String filePath = "";

    @PostMapping(value = "/upload")
    public Object upload(MultipartFile file, HttpServletRequest request){

        //获取name值
        String name = request.getParameter("name");
        System.out.println("姓名：" + name);

        //获取文件名
        String fileName = file.getOriginalFilename();
        System.out.println("文件名：" + fileName);

        //获取文件的后缀名
        String suffixName = fileName.substring(fileName.lastIndexOf("."));
        System.out.println("上传的后缀名为：" +  suffixName);

        //文件上传后的路径
        fileName = UUID.randomUUID() +  suffixName;
        System.out.println("转换后的名称：" +  fileName);

        File dest = new File(filePath + fileName);
        try{
            file.transferTo(dest);
            return fileName;
        }catch (Exception e){
            e.printStackTrace();
        }
        return "fail";
    }
}

三、测试上传
http://localhost:8080/upload.html
四、上传文件大小的配置
在启动类中加入配置方法：

			@Bean  
		    public MultipartConfigElement multipartConfigElement() {  
		        MultipartConfigFactory factory = new MultipartConfigFactory();  
		        //单个文件最大  
		        factory.setMaxFileSize("10240KB"); //KB,MB  
		        /// 设置总上传数据总大小  
		        factory.setMaxRequestSize("1024000KB");  
		        return factory.createMultipartConfig();  
		    }

五、服务器一般都是linux系统，当用jar包启动工程时，需要指定磁盘路径
在application.properties文件中加以下配置：

##要上传到的路径
web.upload-path=/usr/local/file/
spring.resources.static-locations=classpath:/META-INF/resources/,classpath:/resources/,classpath:/static/,classpath:/public/,classpath:/test/,file:${web.upload-path}