阿里云oss的快速使用_aliyun openservices的dependency

1.创建springboot项目，引入下面依赖

   <dependencies>
        <!--阿里云oss依赖-->
        <dependency>
            <groupId>com.aliyun.oss</groupId>
            <artifactId>aliyun-sdk-oss</artifactId>
        </dependency>
        <!--日期工具栏依赖-->
        <dependency>
            <groupId>joda-time</groupId>
            <artifactId>joda-time</artifactId>
        </dependency>
    </dependencies>
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2.在配置文件添加下面

#服务端口
server.port=8002
#服务名
spring.application.name=service-oss
#环境设置
spring.profiles.active=dev
#阿里云oss
#不同服务器，地址不同
aliyun.oss.file.endpoint=oss-cn-guangzhou.aliyuncs.com
aliyun.oss.file.keyid=LTAI4Fy3GqAXraAVQUd7vxKh
aliyun.oss.file.keysecret=mfDksxa5H0Sa5AeTkQ1Iz3EGa4LSq0
#可以在控制台创建，也可以在java中创建
aliyun.oss.file.bucketname=chan-1010
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3.创建常量类，读取配置文件的值

package com.chang.oss.utils;
import org.springframework.beans.factory.InitializingBean;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;

@Component//spring加载完后，执行这个方法
public class ConstantPropertiesUtils implements InitializingBean {
    //读取配置文件的值
    @Value("${aliyun.oss.file.endpoint}")
    private String endpoint;
    @Value("${aliyun.oss.file.keyid}")
    private String keyid;
    @Value("${aliyun.oss.file.keysecret}")
    private String keysecret;
    @Value("${aliyun.oss.file.bucketname}")
    private String bucketname;
    //定义静态公开常量
    public static String END_POINT;
    public static String KEY_ID;
    public static String KEY_SECRET;
    public static  String BUCKET_NAME;
    @Override
    public void afterPropertiesSet() throws Exception {
             END_POINT=endpoint;
             KEY_ID=keyid;
             KEY_SECRET=keysecret;
             BUCKET_NAME=bucketname;
    }
}
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3.创建controller层

package com.chang.oss.controller;

import com.chang.commonutils.R;
import com.chang.oss.service.OssService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.CrossOrigin;
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
@CrossOrigin
@RequestMapping("/eduoss/fileoss")
public class OssController {
    @Autowired
    private OssService ossService;
    //上传头像的方法
    @PostMapping()
    public R uploadOssFile(MultipartFile file){
        //返回上传到oss的路径
        String url = ossService.uploadFileAvatar(file);
        return R.ok().data("url",url);
    }
}
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4.创建service层并且实现实现类

package com.chang.oss.service;
import org.springframework.web.multipart.MultipartFile;

public interface OssService {
    //上传头像到oss
    String uploadFileAvatar(MultipartFile file);
}
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package com.chang.oss.impl;
import com.aliyun.oss.OSS;
import com.aliyun.oss.OSSClientBuilder;
import com.chang.oss.service.OssService;
import com.chang.oss.utils.ConstantPropertiesUtils;
import org.joda.time.DateTime;
import org.springframework.stereotype.Service;
import org.springframework.web.multipart.MultipartFile;
import java.io.InputStream;
import java.util.UUID;

@Service
public class OssServiceImpl implements OssService {
    //上传头像到oss
    @Override
    public String uploadFileAvatar(MultipartFile file) {
        // yourEndpoint填写Bucket所在地域对应的Endpoint。以华东1（杭州）为例，Endpoint填写为https://oss-cn-hangzhou.aliyuncs.com。
        String endpoint = ConstantPropertiesUtils.END_POINT;
       // 阿里云账号AccessKey拥有所有API的访问权限，风险很高。强烈建议您创建并使用RAM用户进行API访问或日常运维，请登录RAM控制台创建RAM用户。
        String accessKeyId = ConstantPropertiesUtils.KEY_ID;
        String accessKeySecret = ConstantPropertiesUtils.KEY_SECRET;
        String bucketName= ConstantPropertiesUtils.BUCKET_NAME;

        // 创建OSSClient实例。
        OSS ossClient = new OSSClientBuilder().build(endpoint, accessKeyId, accessKeySecret);
        //获取原始文件名称
        String filename = file.getOriginalFilename();
        //1.文件名称里面添加唯一随机的值
        String uuid = UUID.randomUUID().toString().replace("-","");
        filename=filename+uuid;

        //2.把文件按照日期进行分类
        String dataPath = new DateTime().toString("yyyy/MM/dd");
        //拼接
        filename = dataPath+"/"+filename;
        try {
            //获取上传文件流
            InputStream inputStream = file.getInputStream();
            //调用oss方法实现上传
            //第一个参数：Bucket名称
            //第二个参数：上传到oss文件名称和路径 /aa/bb/1.jpg
            //第三个参数：上传文件输入流
            ossClient.putObject(bucketName,filename,inputStream);
            // 关闭OSSClient。
            ossClient.shutdown();
            //需要把上传到阿里云oss的路径手动拼接出来
            String url = "https://"+bucketName+"."+endpoint+"/"+filename;
            return url;
        }catch (Exception exception){
            exception.printStackTrace();
            return null;
        }
    }
}
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5.启动类

package com.chang.oss;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration;
import org.springframework.context.annotation.ComponentScan;
import springfox.documentation.swagger2.annotations.EnableSwagger2;

@SpringBootApplication(exclude = DataSourceAutoConfiguration.class)
@EnableSwagger2
@ComponentScan("com.atguigu")
public class Application {

    public static void main(String[] args) {
        SpringApplication.run(Application.class,args);
    }
}

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