Springboot 阿里云OSS对象存储

        OSSController

package com.wzb.OSSController20241009;


import com.aliyun.oss.ClientException;
import com.aliyun.oss.OSS;
import com.aliyun.oss.OSSClientBuilder;
import com.aliyun.oss.OSSException;
import com.aliyun.oss.model.PutObjectRequest;
import com.aliyun.oss.model.PutObjectResult;
import com.wzb.pojo20241009.Result;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.UUID;

@RestController
public class OSSController {

    @PostMapping("/OSSUpload")
    public Result upload(String username, Integer age, MultipartFile image) throws IOException {
        // 获取原文件名
        String originalFileName = image.getOriginalFilename();
        // 获取原文件的扩展名
        String externalFileName = ".txt";
        if (originalFileName != null) {
            // 从最后一个.开始进行字符串切割，就可以成功得到原文件的扩展名
            externalFileName = originalFileName.substring(originalFileName.lastIndexOf("."));
        }
        // 使用UUID给文件重命名
        String newFileName = UUID.randomUUID().toString() + externalFileName;
        // 先保存到本地
        String filePath = "E:/images/" + newFileName;
        image.transferTo(new File(filePath));

        // 准备阿里云
        // 声明bucket的Endpoint
        String endpoint = "https://oss-cn-chengdu.aliyun.com";
        // 声明阿里云账号
        String accessKeyId = "LTAI5tKr5ZzpE1BRJ4yHGEVQ";
        String accessKeySecret = "DqZAfe3cXfX79J72RmcszqEX0wG3D5";
        // 声明bucket的名称
        String bucketName = "wzb-study";
        // 创建ossClient对象
        OSS ossClient = new OSSClientBuilder().build(endpoint, accessKeyId, accessKeySecret);
        // 创建ossClient的方法：OssClientBuilder中的build方法，需要传递endpoint、accessKeyId和accessKeySecret才可以成功创建

        // 准备上传
        try {
            // 开启文件输入流
            InputStream inputStream = new FileInputStream(filePath);
            // 创建PutObjectRequest对象
            PutObjectRequest putObjectRequest = new PutObjectRequest(bucketName, newFileName, inputStream);
            // 这是一个上传对象的请求类，需要传递保存至哪个bucket的bucketName，需要上传的文件的文件名，文件输入流

            // 可以返回response，若不设置，则返回的response为null
            putObjectRequest.setProcess("true");
            // 创建PutObject请求 >> 这步就是上传了
            PutObjectResult result = ossClient.putObject(putObjectRequest);
            // 上传成功后的返回值
            System.out.println(result.getResponse().getStatusCode());
        } catch (OSSException oe) {
            System.out.println("Caught an OSSException, which means your request made it to OSS, "
                    + "but was rejected with an error response for some reason.");
            System.out.println("Error Message:" + oe.getErrorMessage());
            System.out.println("Error Code:" + oe.getErrorCode());
            System.out.println("Request ID:" + oe.getRequestId());
            System.out.println("Host ID:" + oe.getHostId());
        } catch (ClientException ce) {
            System.out.println("Caught an ClientException, which means the client encountered "
                    + "a serious internal problem while trying to communicate with OSS, "
                    + "such as not being able to access the network.");
            System.out.println("Error Message:" + ce.getMessage());
        } finally {
            if (ossClient != null) {
                ossClient.shutdown();
            }
        }

        // 响应
        return Result.success();
    }
}

        EmpService

package com.wzb.service20241009;

import com.wzb.mapper20241009.EmpMapper;
import com.wzb.pojo20241009.Emp;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.time.LocalDateTime;

@Service
public class EmpServiceImplement implements EmpService{
    @Autowired
    private EmpMapper empMapper;

    @Override
    public Emp selectEmp(Integer id) {
        return empMapper.selectEmp(id);
    }

    @Override
    public void update(Emp emp) {
        // 为emp补全信息————将员工的修改时间更新为当前的时间
        emp.setUpdateTime(LocalDateTime.now());
        // 调用Mapper层的方法操作数据库完成更新
        empMapper.updateEmp(emp);

    }
}

         EmpMapper

package com.wzb.mapper20241009;

import com.wzb.pojo20241009.Emp;
import org.apache.ibatis.annotations.Mapper;
import org.apache.ibatis.annotations.Select;

@Mapper
public interface EmpMapper {

    @Select("select * from emp where id = #{id}")
    public Emp selectEmp(Integer id);

    // 因为更新员工数据的SQL语句相对比较复杂，所以说需要使用xml动态SQL
    public void updateEmp(Emp emp);
}

        Emp类

package com.wzb.pojo20241009;

import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;

import java.time.LocalDate;
import java.time.LocalDateTime;

@Data
@NoArgsConstructor
@AllArgsConstructor
public class Emp {
    private Integer id;
    private String username;
    private String password;
    private String name;
    private Short gender;
    private String image;
    private Short job;
    private LocalDate entrydate;
    private Integer deptId;
    private LocalDateTime createTime;
    private LocalDateTime updateTime;
}

        响应结果Result

package com.wzb.pojo20241009;


import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;

@Data
@NoArgsConstructor
@AllArgsConstructor
public class Result {
    private Integer code; // 响应码，1是响应成功，2是响应失败
    private String message; // 响应信息，描述响应结果的字符串
    private Object data; // 响应返回的数据

    // 响应成功，但不返回数据的方法
    public static Result success() {
        return new Result(1, "success", null);
    }
    // 响应成功，并且返回数据的方法
    public static Result success(Object data) {
        return new Result(1,"success", data);
    }
    // 响应失败的方法
    public static Result fail(String message) {
        return new Result(0, message, null);
    }
}