SpringBoot+minio+kkfile实现文件预览功能

git clone https://codeup.aliyun.com/6254dee9a923b68581caaf50/kkfileviewer.git
cd kkfileviewer
docker build -t kkfileview:v4.4.0 .

docker run -d -p 8012:8012 --name kkfileview kkfileview:v4.4.0

<dependency>
    <groupId>io.minio</groupId>
    <artifactId>minio</artifactId>
    <version>8.5.11</version>
</dependency>

# minio 文件存储配置信息
minio:
  endpoint: http://xxxxx:9000
  accessKey: xxxx
  secretKey: xxxxx
  bucketName: test

package com.sunny.config;
 
import io.minio.MinioClient;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
 
@Configuration
public class MinioConfig {
 
    @Value("${minio.endpoint}")
    private String endPoint;
 
    @Value("${minio.accessKey}")
    private String accessKey;
 
    @Value("${minio.secretKey}")
    private String secretKey;
 
    @Value("${minio.bucketName}")
    private String bucketName;
 
 
    @Bean
    protected MinioClient minioClient(){
        return MinioClient.builder()
                .endpoint(endPoint)
                .credentials(accessKey, secretKey)
                .build();
    }
}

package com.sunny.utils;
 
import com.sunny.entity.common.ApiResult;
import com.sunny.exception.AppException;
import io.minio.GetPresignedObjectUrlArgs;
import io.minio.MinioClient;
import io.minio.PutObjectArgs;
import io.minio.http.Method;
import jakarta.annotation.Resource;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;
import org.springframework.web.multipart.MultipartFile;
 
import java.io.InputStream;
 
@Component
public class MinioUtils {
 
    @Value("${minio.bucketName}")
    private String bucketName;
 
    @Resource
    private MinioClient minioClient;
 
    public ApiResult uploadFile(MultipartFile file) throws AppException {
        String fileName = System.currentTimeMillis() + file.getOriginalFilename();
        try (InputStream fi = file.getInputStream()) {
            PutObjectArgs putObjectArgs = PutObjectArgs.builder().bucket(bucketName).contentType(file.getContentType()).object(fileName).stream(fi, fi.available(), -1).build();
            minioClient.putObject(putObjectArgs);
        } catch (Exception e) {
            throw new AppException("文件上传失败" + e.getMessage());
        }
        return ApiResult.ok(fileName);
    }
 
    public ApiResult getPreviewUrl(String objectName) throws AppException {
        try {
            GetPresignedObjectUrlArgs urlArgs = GetPresignedObjectUrlArgs.builder().bucket(bucketName).object(objectName).method(Method.GET).build();
            return ApiResult.ok(minioClient.getPresignedObjectUrl(urlArgs));
        } catch (Exception e) {
            throw new AppException("获取预览链接失败" + e.getMessage());
        }
    }
}

package com.sunny.controller;
 
import com.sunny.entity.common.ApiResult;
import com.sunny.exception.AppException;
import com.sunny.utils.MinioUtils;
import jakarta.annotation.Resource;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;
 
@RestController
@RequestMapping("/file")
public class FileOperationController {
 
    @Resource
    private MinioUtils minioUtils;
 
    @PostMapping("/upload")
    public ApiResult upload(MultipartFile file) throws AppException {
        return minioUtils.uploadFile(file);
    }
 
    @GetMapping("/getPreviewUrl")
    public ApiResult getPreviewUrl(String fileName) throws AppException {
        return minioUtils.getPreviewUrl(fileName);
    }
}