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文件本地和OSS上传

article 2025/1/5 12:06:29

这里写目录标题

前端传出文件
后端本地存储
阿里云OSS存储
- 上传Demo
- 实现上传
- @ConfigurationProperties

前端传出文件

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>上传文件</title>
</head>
<body>               
<form action="/upload" method="post" enctype="multipart/form-data">
   姓名: <input type="text" name="username"><br>
   年龄: <input type="text" name="age"><br>
   头像: <input type="file" name="image"><br>
     <input type="submit" value="提交">
</form>
</body>
</html>

后端本地存储

import org.springframework.web.multipart.MultipartFile;

@PostMapping(value = "/upload")
public String upload(String username, Integer age,@RequestParam("image") MultipartFile file) throws IOException {
     
     log.info("文件上传：{},{},{}",username,age,file);
     String name=file.getOriginalFilename();
     
     file.transferTo(new File("D:\\images\\"+name));  //存入本地
     return "success";
}

阿里云OSS存储

存储步骤
在这里插入图片描述
查找 Endpoint 地址

上传Demo


import java.io.*;

import com.aliyun.oss.*;
public class Demo {
    public static void main(String[] args)  {
        // 设置 OSS Endpoint 地址
        String endpoint = "https://oss-cn-beijing.aliyuncs.com";

 
        String accessKeyId = "LTAI5tHKDa7NFXnaHWrUkmNs";
        String accessKeySecret = "aeQsl73MlNGDZ2Q3QD7cxES7zt5YVb";

        String bucketName = "k92q-b";  //bucket名字

        //上传后的名称
        String objectName="狗.jpg";

        //上传的文件地址
        String filePatn="C:\\Users\\DELL\\Pictures\\头像背景\\狗.jpg";


        OSS ossClient = new OSSClientBuilder().build(endpoint,accessKeyId,accessKeySecret);


        InputStream inputStream= null;
        try {
            inputStream = new FileInputStream(filePatn);
        } catch (FileNotFoundException e) {
            throw new RuntimeException(e);
        }
        ossClient.putObject(bucketName, objectName, inputStream);
            System.out.println("2. 文件 " + objectName + " 上传成功。");

    }
}

实现上传


import com.aliyun.oss.OSS;
import com.aliyun.oss.OSSClientBuilder;
import org.springframework.stereotype.Component;
import org.springframework.web.multipart.MultipartFile;
import java.io.*;
import java.util.UUID;

/**
 * 阿里云 OSS 工具类
 */
@Component
public class AliOSSUtils {

    private String endpoint = "https://oss-cn-beijing.aliyuncs.com";
    private String accessKeyId = "LTAI5tHKDa7NFXnaHWrUkmNs";
    private String accessKeySecret = "aeQsl73MlNGDZ2Q3QD7cxES7zt5YVb";
    private String bucketName = "k92q-b";

    /**
     * 实现上传图片到OSS
     */
    public String upload(MultipartFile file) throws IOException {
        // 获取上传的文件的输入流
        InputStream inputStream = file.getInputStream();

        // 避免文件覆盖
        String originalFilename = file.getOriginalFilename();
        String fileName = UUID.randomUUID().toString() + originalFilename.substring(originalFilename.lastIndexOf("."));

        //上传文件到 OSS
        OSS ossClient = new OSSClientBuilder().build(endpoint, accessKeyId, accessKeySecret);
        ossClient.putObject(bucketName, fileName, inputStream);

        //文件访问路径
        String url = endpoint.split("//")[0] + "//" + bucketName + "." + endpoint.split("//")[1] + "/" + fileName;
        // 关闭ossClient
        ossClient.shutdown();
        return url;// 把上传到oss的路径返回
    }
}

接口部分

@PostMapping(value = "/upload")
    public String upload(String username,Integer age,@RequestParam("image") MultipartFile file){
        String url;
        try {
            url=aliOSSUtils.upload(file);
        } catch (IOException e) {
            throw new RuntimeException(e);
        }
        System.out.println("成功");
        return url;
    }

@ConfigurationProperties

为了方便修改配置项中的属性

@Component
@Data          //lombok
@ConfigurationProperties(prefix = "aliyun.oss")
public class AliOSSUtils{
private String endpoint;
    private String accessKeyId;
    private String accessKeySecret;
    private String bucketName;
}

aliyun:
  oss:
    endpoint: https://oss-cn-beijing.aliyuncs.com
    accessKeyId: LTAI5tHKDa7NFXnaHWrUkmNs
    accessKeySecret: aeQsl73MlNGDZ2Q3QD7cxES7zt5YVb
    bucketName: k92q-b