liujie
2026-01-29 2dee667a20caf3dca8e62f326bc9b141ef73ca2d
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package com.ruoyi.system.service.impl;
 
 
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.ruoyi.system.mapper.UserFileMapper;
import com.ruoyi.system.model.UserFile;
import com.ruoyi.system.service.UserFileService;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.core.io.InputStreamResource;
import org.springframework.stereotype.Service;
 
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
 
/**
 * <p>
 *  服务实现类
 * </p>
 *
 * @author administrator
 * @since 2026-01-15
 */
@Service
public class UserFileServiceImpl extends ServiceImpl<UserFileMapper, UserFile> implements UserFileService {
 
    @Value("${file.upload.dirFile}")
    private Path fileLocation;
 
    @Override
 
    public InputStreamResource resolveResource(UserFile userFile){
        try {
            var filePath = fileLocation.resolve(userFile.getName() + "." + userFile.getExtension()).normalize();
            if (!Files.exists(filePath)) {
                return null;
            }
            return new InputStreamResource(Files.newInputStream(filePath));
 
        }catch (Exception e){
            e.printStackTrace();
        }
        return null;
 
    }
}