springboot实现单个文件上传（图片 文档 ）

在pom.xml里引入web类库

 

创建upload.html，实现文件的选择与上传

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>上传文件到服务器</title>
</head>
<body>
<form action="/upload" method="post" enctype="multipart/form-data">
    <input type="file" name="uploadFile" value="请选择文件">
    <input type="submit" value="上传">
</form>
</body>
</html>

 

 uploadFile.transferTo(fileServer); 把上传的文件存储到服务器

创建UploadController类，用来接收上传的文件

 

@RestController
public class UploadImgaesUtil {

    @PostMapping("/upload")
    public String upload(MultipartFile uploadFile, HttpServletRequest request) {
        /*
         定义文件的存储路径,如下，是在linux和mac上定义的文件路径
        /private/var/folders/8x/4zvnbqmj1w33cqmzrpygzbth0000gn/T/tomcat-docbase.5206733816001100271.8080/uploadFile
         */

        String realPath = request.getSession().getServletContext().getRealPath("/uploadFile/");
        File dir = new File(realPath);
        if (!dir.isDirectory()) {//文件目录不存在，就创建一个
            dir.mkdirs();
        }

        try {
            String filename = uploadFile.getOriginalFilename();
            //服务端保存的文件对象
            File fileServer = new File(dir, filename);
            System.out.println("file文件真实路径:" + fileServer.getAbsolutePath());
            //2，实现上传
            uploadFile.transferTo(fileServer);
            String filePath = request.getScheme() + "://" +
                    request.getServerName() + ":"
                    + request.getServerPort()
                    + "/uploadFile/" + filename;
            //3，返回可供访问的网络路径
            System.out.println(filePath);
            return filePath;
        } catch (IOException e) {
            e.printStackTrace();
        }
        return "上传失败";
    }
验证
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posted @ 2022-03-01 16:33  Zrsz  阅读(254)  评论(0)    收藏  举报