oss 图片上传和下载

常用的图片服务器

1.hdfs

2.fastdfs

3.oss

 

OSS

通过阿里云实现存储对象来管理文件

1.注册阿里云

https://oss.console.aliyun.com

 

2.开通oss服务

 

 3.创建bucket

 

 

 

 

 

 

4.创建公钥

 

 

 5.复制公钥的id和secret

 

 

 6.创建springboot项目

    6.1导入jar包

    <properties>
<java.version>1.8</java.version>
</properties>

<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-jdbc</artifactId>
</dependency>
<!-- web依赖，tomcat。dispatcherServlet xml-->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<!-- 启动器-->
<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
<version>1.3.3</version>
</dependency>

<!--引入druid数据源-->
<!-- https://mvnrepository.com/artifact/com.alibaba/druid -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>1.1.8</version>
</dependency>

<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>8.0.23</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<optional>true</optional>
<version>1.18.20</version>
</dependency>

<dependency>
<groupId>tk.mybatis</groupId>
<artifactId>mapper-spring-boot-starter</artifactId>
<version>2.1.5</version>
</dependency>

<!--  <dependency>-->
<!--            <groupId>joda-time</groupId>-->
<!--            <artifactId>joda-time</artifactId>-->
<!--            <version>2.10.10</version>-->
<!--    </dependency>-->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>

</dependency>

<!-- 日期工具栏依赖 -->
<dependency>
<groupId>joda-time</groupId>
<artifactId>joda-time</artifactId>
<version>2.10.10</version>
</dependency>
<dependency>
<groupId>com.aliyun.oss</groupId>
<artifactId>aliyun-sdk-oss</artifactId>
<version>3.3.0</version>
</dependency>
<dependency>
<groupId>joda-time</groupId>
<artifactId>joda-time</artifactId>
<version>2.10.10</version>
</dependency>


</dependencies>

<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<configuration>
<excludes>
<exclude>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
</exclude>
</excludes>
</configuration>
</plugin>
</plugins>
</build>

 

 6.2创建实体类：名字随意记录oss需要的所有的属性

  package zhiyou.bean;

import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
import org.springframework.beans.factory.InitializingBean;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.stereotype.Component;

@Data
@AllArgsConstructor
@NoArgsConstructor
@Component
@ConfigurationProperties(prefix = "aliyun.oss.file")
public class ConstantPropertiesUtils {

//读取配置文件内容
@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;


}
  6.3：在配置文件中创建aliyun.oss.file前缀的相关属性

 

aliyun.oss.file.bucketname=oss-05013
aliyun.oss.file.endpoint=oss-cn-beijing.aliyuncs.com
aliyun.oss.file.keyid=LTAI5tF8a5rYk2FN4njHPzXs
aliyun.oss.file.keysecret=zIaYBlledZJDnkZyFgRxK1gc6uNom3

 

 

 

   6.4 创建service

 

package zhiyou.service.impl;

import com.aliyun.oss.OSS;
import com.aliyun.oss.OSSBuilder;
import com.aliyun.oss.OSSClient;
import com.aliyun.oss.OSSClientBuilder;
import com.aliyun.oss.model.GetObjectRequest;
import lombok.extern.slf4j.Slf4j;
import org.joda.time.DateTime;
import org.springframework.stereotype.Service;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.multipart.MultipartFile;
import zhiyou.bean.ConstantPropertiesUtils;

import javax.annotation.Resource;
import javax.xml.crypto.Data;
import java.io.File;
import java.io.InputStream;
import java.util.UUID;
@Service
@Slf4j

public class OssService {
    @Resource
    private ConstantPropertiesUtils constantPropertiesUtils;
    public String uploadFileAvatar(MultipartFile file) {
        //获取oss上传文件中的参数
        String bucketname = constantPropertiesUtils.getBucketname();
        String endpoint = constantPropertiesUtils.getEndpoint();
        String keyId = constantPropertiesUtils.getKeyid();
        String keysecret= constantPropertiesUtils.getKeysecret();

        System.out.println("keysecret = " + keysecret);
        System.out.println("keyId = " + keyId);

        OSS ossClient;
        InputStream inputStream;

        //创建ossclient实例
        try {
            ossClient = new OSSClientBuilder().build(endpoint,keyId,keysecret);

            //上传文件流
            inputStream = file.getInputStream();
            //为了是的文件可以重复的上传，每次上传的是偶需要将文件名进行修改
            String filename = file.getOriginalFilename();


            log.info("图片上传的名字为{}，",filename);

            String uuid = UUID.randomUUID().toString().replaceAll("-", "");

            String newFileName = uuid+filename;
            //获取当前的日期，然后以日期和新的文件名组成全路径，使得oss中的文件按照日期进行分类存储
            String date = new DateTime().toString("yyyy/MM/dd");

            String fullFilaName = date+"/"+newFileName;

            log.info("图片保存在oss的全路径为,{}",fullFilaName);

            //第一个参数Bucket名称，第二个参数上传搭到oss文件路径和文件名称

            ossClient.putObject(bucketname,fullFilaName,inputStream);

            //关闭OSSClient
            ossClient.shutdown();
            System.out.println("https://"+bucketname+"."+endpoint+"/"+fullFilaName);
            return "https://"+bucketname+"."+endpoint+"/"+fullFilaName;

        } catch (Exception e) {
            log.error("文件上传失败",e);
            throw new RuntimeException("文件上传oss丢失");


        }
    }

    public void downLoadFileAvatar(String yuan, File muDi){
         String bucketName = constantPropertiesUtils.getBucketname();
        String endpoint = constantPropertiesUtils.getEndpoint();
        String keyId = constantPropertiesUtils.getKeyid();
        String keySecret = constantPropertiesUtils.getKeysecret();

        //创建OSSClient实例
        OSS ossClient = new OSSClientBuilder().build(endpoint,keyId,keySecret);

        // 下载Object到本地文件，并保存到指定的本地路径中。如果指定本地文件存在会覆盖，不存在则新建。
        // 如果未指定本地路径，则下载后的文件默认保存到示例程序所属目对应本地路径中。

        File muDiFile = new File(muDi,System.currentTimeMillis()+(yuan.substring(yuan.indexOf("."))));

        ossClient.getObject(new GetObjectRequest(bucketName,yuan),muDiFile);

        //关闭OSSClient
        ossClient.shutdown();
    }
}

6.5创建controller

package zhiyou.controller;


import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import zhiyou.bean.Department;
import zhiyou.service.DeptSerrvice;

@Controller
public class DepartController {

    @Autowired
    DeptSerrvice deptSerrvice;


    @RequestMapping("/getDeptById/{id}")
    @ResponseBody  //返回json 数据
    public Department getDeptById(@PathVariable("id") Integer id){

        return deptSerrvice.getDeptById(id);
    }

}
7 测试