springboot + minio + kkfile实现文件预览

1、容器安装kkfileviewer

1.1 下载文件

这里以kkfile 4.4.0-beta版本为例

下载kkfile安装包及Dockerfile：codeup.aliyun.com/6254dee9a92…

1.2、构建镜像

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

1.3、 启动kkfileviewer

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

1.4、 访问测试

http://you-ip:8012

2、springboot集成minio

2.1 pom.xml添加依赖

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

2.2、 配置

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

2.3、minio配置类

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();
    }
}

2.4、 minio工具类

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());
        }
    }
}

2.5、接口

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);
    }
}

3、测试

3.1、上传文件

3.2、获取minio文件预览地址

3.1中返回一个文件名，该文件名为上传文件在minio中的唯一名称，使用该名称请求minio文件预览地址

3.3、文件预览

3.2中的接口返回一个地址，将地址放到kkfileviewer文件预览服务中，可以预览文件

转载来源：https://juejin.cn/post/7407384172049891379