案例01-tlias智能学习辅助系统02-文件上传

news2025/1/15 12:57:02

4.6 文件上传

若要实现下方的文件上传页面，需要前后端做如下操作：

后端：

本地存储

云存储

阿里云官方文档说明

具体实现参考上方连接，不再详细说明

阿里云OSS快速入门请参考文档： AliOSS.md （在talis文件目录下）

1. 导入依赖

<!--        阿里云OSS依赖-->
        <dependency>
            <groupId>com.aliyun.oss</groupId>
            <artifactId>aliyun-sdk-oss</artifactId>
            <version>3.15.1</version>
        </dependency>
        <dependency>
            <groupId>javax.xml.bind</groupId>
            <artifactId>jaxb-api</artifactId>
            <version>2.3.1</version>
        </dependency>
        <dependency>
            <groupId>javax.activation</groupId>
            <artifactId>activation</artifactId>
            <version>1.1.1</version>
        </dependency>
        <!-- no more than 2.3.3-->
        <dependency>
            <groupId>org.glassfish.jaxb</groupId>
            <artifactId>jaxb-runtime</artifactId>
            <version>2.3.3</version>
        </dependency>

2.导入工具类：记得修改四个属性值为自己的阿里云bucket信息

AliOSSUtils：

package pearl.utils;

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-hangzhou.aliyuncs.com";
    private String accessKeyId = "LTAI5t6shDdHRBipgP6b9nmM";
    private String accessKeySecret = "KmrT4ftAXmpswMm8BWdeYy7fIKVSuG";
    private String bucketName = "tlias-background-test01pearl";

//    上述四个值一定要修改成自己的信息

    /**
     * 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
    }

}

新建一个UploadController文件

package pearl.controller;

import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;
import pearl.pojo.Result;
import pearl.utils.AliOSSUtils;

import java.io.IOException;

@RestController
@Slf4j
public class UploadController {
    @Autowired
    private AliOSSUtils aliOSSUtils;

    /*
    * 文件上传到阿里云
    * */
    @PostMapping("/upload")
    public Result upload(MultipartFile image) throws IOException {
        log.info("文件上传，文件名：{}",image.getOriginalFilename());
//       调用阿里云工具类进行文件上传
        String url = aliOSSUtils.upload(image);
        log.info("文件上传完成，文件访问的url：{}",url);
        return Result.success(url);
    }
}

完成！