50 lines
1.9 KiB
Java
50 lines
1.9 KiB
Java
package edu.whut.smilepicturebackend.manager.upload;
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import cn.hutool.core.io.FileUtil;
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import edu.whut.smilepicturebackend.exception.ErrorCode;
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import edu.whut.smilepicturebackend.exception.ThrowUtils;
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import org.springframework.stereotype.Service;
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import org.springframework.web.multipart.MultipartFile;
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import java.io.File;
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import java.util.Arrays;
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import java.util.List;
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/**
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* 文件图片上传
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*/
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@Service
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public class FilePictureUpload extends PictureUploadTemplate {
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@Override
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protected void validPicture(Object inputSource) {
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MultipartFile multipartFile = (MultipartFile) inputSource;
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ThrowUtils.throwIf(multipartFile == null, ErrorCode.PARAMS_ERROR, "文件不能为空");
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// 1. 校验文件大小
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long fileSize = multipartFile.getSize();
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final long ONE_M = 1024 * 1024;
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ThrowUtils.throwIf(fileSize > 2 * ONE_M, ErrorCode.PARAMS_ERROR, "文件大小不能超过 2MB");
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// 2. 校验文件后缀
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String fileSuffix = FileUtil.getSuffix(multipartFile.getOriginalFilename());
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ThrowUtils.throwIf(fileSuffix == null, ErrorCode.PARAMS_ERROR, "文件后缀缺失");
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// 允许上传的文件后缀列表（或者集合）
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final List<String> ALLOW_FORMAT_LIST = Arrays.asList("jpeg", "png", "jpg", "webp");
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// 统一转成小写再比较
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ThrowUtils.throwIf(
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!ALLOW_FORMAT_LIST.contains(fileSuffix.toLowerCase()),
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ErrorCode.PARAMS_ERROR, "文件类型错误");
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}
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@Override
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protected String getOriginFilename(Object inputSource) {
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MultipartFile multipartFile = (MultipartFile) inputSource;
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return multipartFile.getOriginalFilename();
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}
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@Override
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protected void processFile(Object inputSource, File file) throws Exception {
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MultipartFile multipartFile = (MultipartFile) inputSource;
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multipartFile.transferTo(file);
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}
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}
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