SpringBoot + minio + kkfile 实现文件预览

作者：小太阳381
链接：https://juejin.cn/post/7407384172049891379

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：

https://codeup.aliyun.com/6254dee9a923b68581caaf50/kkfileviewer.git

1.2、构建镜像

git clone https://codeup.aliyun.com/6254dee9a923b68581caaf50/kkfileviewer.gitcd kkfileviewerdocker 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;
@Configurationpublic 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;
@Componentpublic 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

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