Java MultipartFile 上传文件/上传图片 亲测

Java MultipartFile 上传文件/上传图片

• • 1. 判断允许上传文件的 文件后缀/图片后缀/相片后缀 和 其它工具类
  • 2. 上传接口
  • 3. 上传成功

1. 判断允许上传文件的 文件后缀/图片后缀/相片后缀 和 其它工具类

import ;
import ;
import ;
import ;

@Component
public class FileUtil {
    public static final List<String> IMAGE_EXTENSIONS = (".jpg", ".jpeg", ".png");
}

import ;

public class CommonUtil {
    public static String getUUID() {
        String uuid = ().toString().replaceAll("-", "");
        return uuid;
    }
}

import ;
import ;

public class DateUtil {
    public static final String HH = "HH";
    public static final String YYYY_MM_DD = "yyyy-MM-dd";
    public static final DateTimeFormatter FORMATTER_HH = (HH);
    public static final DateTimeFormatter FORMATTER_YYYY_MM_DD = (YYYY_MM_DD);
    public static String getHH() {
        return FORMATTER_HH.format(());
    }
    public static String getYYYYMMDD() {
        return FORMATTER_YYYY_MM_DD.format(());
    }
}

2. 上传接口

@PostMapping("/")
    public Map<String, String> updateImage(@RequestParam("image") MultipartFile[] multfiles)  {
    	Map<String, String> result = new HashMap<>();
        if ( == 0) {
			("message", "请选择图片！");
			return result;
        }

        // 源文件名称
        final String originalFileName = multfiles[0].getOriginalFilename();
        if ((originalFileName)) {
			("message", "请选择图片！");
			return result;
        }

        // 文件后缀[.jpg]
        final String suffix = ((".")).toLowerCase();
        if (!FileUtil.IMAGE_EXTENSIONS.contains(suffix)) {
			("message", "图片格式错误！");
			return result;
        }

        String lastFilePath;
        String newFileName = () + suffix;
        String folderName =  + "temp" + ;
        String relativePath = folderName + () +  + ();
        String filePath = "D:\\file" + relativePath;
        String fileUrl = null;
        File targetFile = new File(filePath);
        if (!()) {
            ();
        }
        FileOutputStream out = null;
        try {
            lastFilePath = filePath +  + newFileName;
            out = new FileOutputStream(lastFilePath);
            (multfiles[0].getBytes());
            fileUrl = "http://127.0.0.1:9000" + relativePath +  + newFileName;
        } catch (Exception e) {
            ();
        } finally {
            if (out != null) {
                try {
                    ();
                } catch (IOException e) {
                    ();
                }
                try {
                    ();
                } catch (IOException e) {
                    ();
                }
            }
        }

        if (fileUrl == null) {
			("message", "图片上传失败！");
			return result;
        }

		("message", "上传成功！");
		("url", fileUrl);
		return result;
    }

3. 上传成功

url => http://127.0.0.1:9000/temp/2019-09-12/14/

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