springboot2.3 + minio8 文件上传

简介

 　　是在 Apache License v2.0 下发布的对象存储服务器,学习成本低，安装运维简单，主流语⾔的客户端整合都有,号称最强的对象存储⽂件服务器，且可以和容器化技术docker/k8s等结合，优点：功能强、可以根据业务做二次的定制，新一代分布式文件存储系统。

安装

下载
wget http://dl.minio.org.cn/server/minio/release/linux-amd64/minio

赋权
chmod +x minio

启动 (指定的url是文件存储地址)
./minio server /usr/local/wulei/minio_store 2>&1 &

访问
http:192.168.200.100:9000

初体验

　　界面非常友好，登陆成功后右下角可以 create bucket 也可以直接上传文件。create bucket 有点类似分组的概念，建议每个项目都各自一个分组。

　　还可以在分组下面继续创建文件夹，右边还提供了各种功能（视频、文档 等资源不支持预览）。

codeing

1. 加入配置和依赖

<!--文件存储-->
<dependency>
    <groupId>io.minio</groupId>
    <artifactId>minio</artifactId>
    <version>8.0.3</version>
</dependency>



minio:
  # 地址
  endpoint: http://192.168.200.100:9000
  # 账号
  accessKey: minioadmin
  # 密码
  secretKey: minioadmin

2. 配置客户端

import io.minio.MinioClient;
import lombok.Data;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

@Data
@Configuration
@ConfigurationProperties(prefix = "minio")
/**
 * 文件服务器配置类
 */
public class MinioConfig {

    private String endpoint;
    private String accessKey;
    private String secretKey;

    @Bean
    public MinioClient minioClient(){
        return MinioClient.builder()
                .endpoint(endpoint)
                .credentials(accessKey, secretKey)
                .build();
    }
}

3. 工具类

import io.minio.*;
import io.minio.http.Method;
import io.minio.messages.Bucket;
import io.minio.messages.DeleteError;
import io.minio.messages.DeleteObject;
import io.minio.messages.Item;
import org.springframework.stereotype.Component;
import org.springframework.util.FastByteArrayOutputStream;
import org.springframework.web.multipart.MultipartFile;
import javax.annotation.Resource;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletResponse;
import java.util.ArrayList;
import java.util.List;
import java.util.stream.Collectors;

/**
 * 文件服务器工具类
 */
@Component
public class MinioUtil {
    private String bucketName = "wulei-service";

    @Resource
    private MinioClient minioClient;

    /**
     * 查看存储bucket是否存在
     * @return boolean
     */
    public Boolean bucketExists(String bucketName) {
        Boolean found;
        try {
            found = minioClient.bucketExists(BucketExistsArgs.builder().bucket(bucketName).build());
        } catch (Exception e) {
            //e.printStackTrace();
            return false;
        }
        return found;
    }

    /**
     * 创建存储bucket
     * @return Boolean
     */
    public Boolean makeBucket(String bucketName) {
        try {
            minioClient.makeBucket(MakeBucketArgs.builder()
                    .bucket(bucketName)
                    .build());
        } catch (Exception e) {
            e.printStackTrace();
            return false;
        }
        return true;
    }
    /**
     * 删除存储bucket
     * @return Boolean
     */
    public Boolean removeBucket(String bucketName) {
        try {
            minioClient.removeBucket(RemoveBucketArgs.builder()
                    .bucket(bucketName)
                    .build());
        } catch (Exception e) {
            e.printStackTrace();
            return false;
        }
        return true;
    }
    /**
     * 获取全部bucket
     */
    public List<Bucket> getAllBuckets() {
        try {
            return minioClient.listBuckets();
        } catch (Exception e) {
            e.printStackTrace();
        }
        return null;
    }

    /**
     * 文件上传
     * @param file 文件
     * @return Boolean
     */
    public Boolean upload(MultipartFile file) {
        // 修饰过的文件名 非源文件名
        String fileName = "2021-07/21/";
        fileName = fileName+file.getOriginalFilename();
        try {
            PutObjectArgs objectArgs = PutObjectArgs.builder().bucket(bucketName).object(fileName)
                    .stream(file.getInputStream(),file.getSize(),-1).contentType(file.getContentType()).build();
            //文件名称相同会覆盖
            minioClient.putObject(objectArgs);
        } catch (Exception e) {
            e.printStackTrace();
            return false;
        }
        return true;
    }

    /**
     * 预览图片
     * @param fileName
     * @return
     */
    public String preview(String fileName){
        // 查看文件地址
        GetPresignedObjectUrlArgs build = new GetPresignedObjectUrlArgs().builder().bucket(bucketName).object(fileName).method(Method.GET).build();
        try {
            String url = minioClient.getPresignedObjectUrl(build);
            return url;
        } catch (Exception e) {
            e.printStackTrace();
        }
        return null;
    }

    /**
     * 文件下载
     * @param fileName 文件名称
     * @param res response
     * @return Boolean
     */
    public void download(String fileName, HttpServletResponse res) {
        GetObjectArgs objectArgs = GetObjectArgs.builder().bucket(bucketName)
                .object(fileName).build();
        try (GetObjectResponse response = minioClient.getObject(objectArgs)){
            byte[] buf = new byte[1024];
            int len;
            try (FastByteArrayOutputStream os = new FastByteArrayOutputStream()){
                while ((len=response.read(buf))!=-1){
                    os.write(buf,0,len);
                }
                os.flush();
                byte[] bytes = os.toByteArray();
                res.setCharacterEncoding("utf-8");
                //设置强制下载不打开
                //res.setContentType("application/force-download");
                res.addHeader("Content-Disposition", "attachment;fileName=" + fileName);
                try (ServletOutputStream stream = res.getOutputStream()){
                    stream.write(bytes);
                    stream.flush();
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    /**
     * 查看文件对象
     * @return 存储bucket内文件对象信息
     */
    public List<Item> listObjects() {
        Iterable<Result<Item>> results = minioClient.listObjects(
                ListObjectsArgs.builder().bucket(bucketName).build());
        List<Item> items = new ArrayList<>();
        try {
            for (Result<Item> result : results) {
                items.add(result.get());
            }
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        }
        return items;
    }

    /**
     * 删除
     * @param fileName
     * @return
     * @throws Exception
     */
    public boolean remove(String fileName){
        try {
            minioClient.removeObject( RemoveObjectArgs.builder().bucket(bucketName).object(fileName).build());
        }catch (Exception e){
            return false;
        }
        return true;
    }

    /**
     * 批量删除文件对象（没测试）
     * @param objects 对象名称集合
     */
    public Iterable<Result<DeleteError>> removeObjects(List<String> objects) {
        List<DeleteObject> dos = objects.stream().map(e -> new DeleteObject(e)).collect(Collectors.toList());
        Iterable<Result<DeleteError>> results = minioClient.removeObjects(RemoveObjectsArgs.builder().bucket(bucketName).objects(dos).build());
        return results;
    }

}

4. 测试

import com.wulei.common.util.JsonData;
import com.wulei.user.util.MinioUtil;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.multipart.MultipartFile;
import javax.servlet.http.HttpServletResponse;

@Api(tags = "文件管理模块")
@RestController
@RequestMapping("/api/file/v1")
@Slf4j
public class MinioController {

    @Autowired
    private MinioUtil minioUtil;

    @ApiOperation(value = "查看存储bucket是否存在")
    @GetMapping("/bucketExists")
    public JsonData bucketExists(String bucketName) {
        return JsonData.buildSuccess(minioUtil.bucketExists(bucketName));
    }

    @ApiOperation(value = "创建存储bucket")
    @GetMapping("/makeBucket")
    public JsonData makeBucket(String bucketName) {
        minioUtil.makeBucket(bucketName);
        return JsonData.buildSuccess();
    }

    @ApiOperation(value = "删除存储bucket")
    @GetMapping("/removeBucket")
    public JsonData removeBucket(String bucketName) {
        minioUtil.removeBucket(bucketName);
        return JsonData.buildSuccess();
    }

    @ApiOperation(value = "获取全部bucket")
    @GetMapping("/getAllBuckets")
    public JsonData getAllBuckets() {
        return JsonData.buildSuccess(minioUtil.getAllBuckets());
    }



    @ApiOperation(value = "文件上传")
    @GetMapping("/upload")
    public JsonData upload(MultipartFile file) {
        minioUtil.upload(file);
        return JsonData.buildSuccess();
    }

    @ApiOperation(value = "图片预览")
    @GetMapping("/preview")
    public JsonData preview(String fileName) {
        return JsonData.buildSuccess(minioUtil.preview(fileName));
    }

    @ApiOperation(value = "文件下载")
    @GetMapping("/download")
    public JsonData download(String fileName, HttpServletResponse res) {
        minioUtil.download(fileName,res);
        return JsonData.buildSuccess();
    }

    @ApiOperation(value = "文件删除")
    @GetMapping("/remove")
    public JsonData remove(String fileName) {
        minioUtil.remove(fileName);
        return JsonData.buildSuccess();
    }
}

。