java上传图片到阿里云OSS

第一步：准备好需要的必要参数，（我是在application.properties中配置的）

aliyun.oss.endpoint=oss-cn-shenzhen.aliyuncs.com
aliyun.oss.accessKeyId=LTAI5tRCNVNaTDQmDmBYjdi7
aliyun.oss.accessKeySecret=KNeq5AzJ4SwwrEAVvedbMX2uSuLvoY
aliyun.oss.bucketName=vgcsgo

第二步：接下来配置参数交由spring管理，并编写上传方法

import com.aliyun.oss.OSS;
import com.aliyun.oss.OSSClientBuilder;
import com.aliyun.oss.model.ObjectMetadata;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.multipart.MultipartFile;

import java.io.IOException;
import java.io.InputStream;

@Configuration
public class AliyunConfiguration {

    @Value("${aliyun.oss.endpoint}")
    private String endpoint;

    @Value("${aliyun.oss.accessKeyId}")
    private String accessKeyId;

    @Value("${aliyun.oss.accessKeySecret}")
    private String accessKeySecret;

    @Value("${aliyun.oss.bucketName}")
    private String bucketName;

    @Bean
    public OSS ossClient(){
        return new OSSClientBuilder().build(endpoint, accessKeyId, accessKeySecret);
    }



    public String uploadAliyun(MultipartFile file, String fileName) throws IOException {
        //外面获取文件输入流，最后方便关闭
        InputStream in = file.getInputStream();
        try {
            //2 创建OssClient对象
            OSS ossClient =new OSSClientBuilder().build(endpoint,accessKeyId,accessKeySecret);
            //3 获取文件信息，为了上传
            // meta设置请求头
            ObjectMetadata meta = new ObjectMetadata();
            meta.setContentType("image/jpg");
            //4 设置知道文件夹
            ossClient.putObject(bucketName,fileName,in, meta);
            //5 关闭ossClient
            ossClient.shutdown();
            //6 返回上传之后地址，拼接地址
            String uploadUrl = "https://"+bucketName+"."+endpoint+"/"+fileName;
            return uploadUrl;
        }catch(Exception e) {
            e.printStackTrace();
            return null;
        }finally {
            in.close();
        }
    }

}

最后一步：上传接口

import com.example.csgo.util.AliyunConfiguration;
import com.example.csgo.util.Result;
import org.springframework.beans.factory.annotation.Autowired;
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.IOException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Random;

@RestController
@RequestMapping("/ali/upload")
public class UploadCommon {

    @Autowired
    private AliyunConfiguration aliyunConfiguration;

    /** 上传文件  **/
    @PostMapping("/file")
    public Result uploadFile(MultipartFile file) throws Exception {

        try {
            SimpleDateFormat format = new SimpleDateFormat("yyyyMMddHHmmss");
            // 生成文件名称
            String nameSuffix = file.getOriginalFilename().substring(0, file.getOriginalFilename().lastIndexOf("."))
                    .replaceAll(" ", "_").replaceAll(",", "") + format.format(new Date())
                    + new Random().nextInt(1000);
            //上传原始图片到阿里云
            String uploadPath = aliyunConfiguration.uploadAliyun(file,nameSuffix);
            System.out.println(uploadPath);
            return new Result().result(uploadPath);
        } catch (IOException e) {
            throw new IOException("文件流异常");
        }
    }
}

需要的pom文件

        <dependency>
            <groupId>com.aliyun.oss</groupId>
            <artifactId>aliyun-sdk-oss</artifactId>
            <version>3.1.0</version>
        </dependency>

可直接直接复制代码使用