一、导入minio依赖
这里还要导入lombok是因为在MinIOConfig类中使用了@Data注解，正常来说导入minio依赖就够了
<dependency>
<groupId>io.minio</groupId>
<artifactId>minio</artifactId>
<version>7.1.0</version>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.18.20</version>
<scope>provided</scope>
</dependency>
二、添加配置
application.yml
这些配置都是在创建minio的docker容器的时候就已经定好的，按照自己的配置去改一改就可以了。需要自定义的就一个桶名称bucket
minio:
# MinIO服务器地址
endpoint: http://192.168.200.128:9000
# MinIO服务器访问凭据
accessKey: minio
secretKey: minio123
# MinIO桶名称
bucket: test
# MinIO读取路径前缀
readPath: http://192.168.200.128:9000
MinIOConfig
通过读取配置创建minioClient对象
package com.ruoyi.minio.config;
import com.ruoyi.minio.service.FileStorageService;
import io.minio.MinioClient;
import lombok.Data;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
@Data
@Configuration
@EnableConfigurationProperties({MinIOConfigProperties.class})
//当引入FileStorageService接口时
@ConditionalOnClass(FileStorageService.class)
public class MinIOConfig {
@Autowired
private MinIOConfigProperties minIOConfigProperties;
@Bean
public MinioClient buildMinioClient() {
return MinioClient
.builder()
.credentials(minIOConfigProperties.getAccessKey(), minIOConfigProperties.getSecretKey())
.endpoint(minIOConfigProperties.getEndpoint())
.build();
}
}
MinIOConfigProperties
package com.ruoyi.minio.config;
import lombok.Data;
import org.springframework.boot.context.properties.ConfigurationProperties;
import java.io.Serializable;
@Data
@ConfigurationProperties(prefix = "minio") // 文件上传 配置前缀file.oss
public class MinIOConfigProperties implements Serializable {
private String accessKey;
private String secretKey;
private String bucket;
private String endpoint;
private String readPath;
}
三、导入工具类
Service
package com.ruoyi.minio.service;
import java.io.InputStream;
public interface FileStorageService {
/**
* 上传图片文件
* @param prefix 文件前缀
* @param filename 文件名
* @param inputStream 文件流
* @return 文件全路径
*/
public String uploadImgFile(String prefix, String filename,InputStream inputStream);
/**
* 上传html文件
* @param prefix 文件前缀
* @param filename 文件名
* @param inputStream 文件流
* @return 文件全路径
*/
public String uploadHtmlFile(String prefix, String filename,InputStream inputStream);
/**
* 删除文件
* @param pathUrl 文件全路径
*/
public void delete(String pathUrl);
/**
* 下载文件
* @param pathUrl 文件全路径
* @return
*
*/ public byte[] downLoadFile(String pathUrl);
}
ServiceImpl
package com.heima.file.service.impl;
import com.heima.file.config.MinIOConfig;
import com.heima.file.config.MinIOConfigProperties;
import com.heima.file.service.FileStorageService;
import io.minio.GetObjectArgs;
import io.minio.MinioClient;
import io.minio.PutObjectArgs;
import io.minio.RemoveObjectArgs;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.context.annotation.Import;
import org.springframework.util.StringUtils;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.text.SimpleDateFormat;
import java.util.Date;
@Slf4j
@EnableConfigurationProperties(MinIOConfigProperties.class)
@Import(MinIOConfig.class)
public class MinIOFileStorageService implements FileStorageService {
@Autowired
private MinioClient minioClient;
@Autowired
private MinIOConfigProperties minIOConfigProperties;
private final static String separator = "/";
/**
* @param dirPath
* @param filename yyyy/mm/dd/file.jpg
* @return
*/
public String builderFilePath(String dirPath,String filename) {
StringBuilder stringBuilder = new StringBuilder(50);
if(!StringUtils.isEmpty(dirPath)){
stringBuilder.append(dirPath).append(separator);
}
SimpleDateFormat sdf = new SimpleDateFormat("yyyy/MM/dd");
String todayStr = sdf.format(new Date());
stringBuilder.append(todayStr).append(separator);
stringBuilder.append(filename);
return stringBuilder.toString();
}
/**
* 上传图片文件
* @param prefix 文件前缀
* @param filename 文件名
* @param inputStream 文件流
* @return 文件全路径
*/
@Override
public String uploadImgFile(String prefix, String filename,InputStream inputStream) {
String filePath = builderFilePath(prefix, filename);
try {
PutObjectArgs putObjectArgs = PutObjectArgs.builder()
.object(filePath)
.contentType("image/jpg")
.bucket(minIOConfigProperties.getBucket()).stream(inputStream,inputStream.available(),-1)
.build();
minioClient.putObject(putObjectArgs);
StringBuilder urlPath = new StringBuilder(minIOConfigProperties.getReadPath());
urlPath.append(separator+minIOConfigProperties.getBucket());
urlPath.append(separator);
urlPath.append(filePath);
return urlPath.toString();
}catch (Exception ex){
log.error("minio put file error.",ex);
throw new RuntimeException("上传文件失败");
}
}
/**
* 上传html文件
* @param prefix 文件前缀
* @param filename 文件名
* @param inputStream 文件流
* @return 文件全路径
*/
@Override
public String uploadHtmlFile(String prefix, String filename,InputStream inputStream) {
String filePath = builderFilePath(prefix, filename);
try {
PutObjectArgs putObjectArgs = PutObjectArgs.builder()
.object(filePath)
.contentType("text/html")
.bucket(minIOConfigProperties.getBucket()).stream(inputStream,inputStream.available(),-1)
.build();
minioClient.putObject(putObjectArgs);
StringBuilder urlPath = new StringBuilder(minIOConfigProperties.getReadPath());
urlPath.append(separator+minIOConfigProperties.getBucket());
urlPath.append(separator);
urlPath.append(filePath);
return urlPath.toString();
}catch (Exception ex){
log.error("minio put file error.",ex);
ex.printStackTrace();
throw new RuntimeException("上传文件失败");
}
}
/**
* 删除文件
* @param pathUrl 文件全路径
*/
@Override
public void delete(String pathUrl) {
String key = pathUrl.replace(minIOConfigProperties.getEndpoint()+"/","");
int index = key.indexOf(separator);
String bucket = key.substring(0,index);
String filePath = key.substring(index+1);
// 删除Objects
RemoveObjectArgs removeObjectArgs = RemoveObjectArgs.builder().bucket(bucket).object(filePath).build();
try {
minioClient.removeObject(removeObjectArgs);
} catch (Exception e) {
log.error("minio remove file error. pathUrl:{}",pathUrl);
e.printStackTrace();
}
}
/**
* 下载文件
* @param pathUrl 文件全路径
* @return 文件流
*
*/
@Override
public byte[] downLoadFile(String pathUrl) {
String key = pathUrl.replace(minIOConfigProperties.getEndpoint()+"/","");
int index = key.indexOf(separator);
String bucket = key.substring(0,index);
String filePath = key.substring(index+1);
InputStream inputStream = null;
try {
inputStream = minioClient.getObject(GetObjectArgs.builder().bucket(minIOConfigProperties.getBucket()).object(filePath).build());
} catch (Exception e) {
log.error("minio down file error. pathUrl:{}",pathUrl);
e.printStackTrace();
}
ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
byte[] buff = new byte[100];
int rc = 0;
while (true) {
try {
if (!((rc = inputStream.read(buff, 0, 100)) > 0)) break;
} catch (IOException e) {
e.printStackTrace();
}
byteArrayOutputStream.write(buff, 0, rc);
}
return byteArrayOutputStream.toByteArray();
}
}
四、使用工具类上传文件并返回url
package com.ruoyi.web.controller.utils;
import com.ruoyi.common.core.domain.AjaxResult;
import com.ruoyi.minio.service.impl.MinIOFileStorageService;
import org.springframework.beans.factory.annotation.Autowired;
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;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
@RestController
@RequestMapping("/minio")
public class MinioController {
@Autowired
MinIOFileStorageService minIOFileStorageService;
@PostMapping("/fileupload")
public AjaxResult minIo(MultipartFile multipartFile){
// 检查multipartFile是否为空
if (multipartFile == null || multipartFile.isEmpty()) {
return AjaxResult.error("文件为空，无法处理。");
}
try(InputStream inputStream = multipartFile.getInputStream()) { // 将MultipartFile转换为InputStream
// 上传到MinIO服务器
// 这里的文件名可以生成随机的名称，防止重复
String url = minIOFileStorageService.uploadImgFile("testjpg", "test1.jpg", inputStream);
return AjaxResult.success(url);
} catch (IOException e) {
// 处理异常，可能是getInputStream()失败
return AjaxResult.error("获取InputStream失败：" + e.getMessage());
}
}
}
上传成功后在浏览器中访问图片的url就可以看到图片了。
