SpringBoot-04-文件上传本地以及对象存储OSS

import org.springframework.web.bind.annotation.*;
import org.springframework.web.multipart.MultipartFile;
import com.aliyun.oss.OSS;
import com.aliyun.oss.common.utils.BinaryUtil;
import com.aliyun.oss.common.utils.StringUtils;
import com.aliyun.oss.model.MatchMode;
import com.aliyun.oss.model.PolicyConditions;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.LinkedHashMap;
import java.util.Map;
 
@RestController
public class FileUploadController {
 
    @PostMapping("/upload")
    public Map<String, String> uploadFile(@RequestParam("file") MultipartFile file) {
        if (file.isEmpty()) {
            throw new RuntimeException("文件不能为空");
        }
 
        // 文件名
        String fileName = file.getOriginalFilename();
 
        // 上传到本地文件系统
        String localFilePath = "/path/to/local/directory/" + fileName;
        file.transferTo(new java.io.File(localFilePath));
 
        // 上传到OSS
        String endpoint = "您的EndPoint";
        String accessKeyId = "您的AccessKeyId";
        String accessKeySecret = "您的AccessKeySecret";
        String bucketName = "您的Bucket名称";
        String key = "文件路径和名称";
 
        OSS ossClient = new OSSClientBuilder().build(endpoint, accessKeyId, accessKeySecret);
        try {
            ossClient.putObject(bucketName, key, file.getInputStream());
        } catch (IOException e) {
            throw new RuntimeException("上传OSS失败", e);
        } finally {
            if (ossClient != null) {
                ossClient.shutdown();
            }
        }
 
        Map<String, String> result = new LinkedHashMap<>();
        result.put("localFilePath", localFilePath);
        result.put("OSSFilePath", "https://" + bucketName + "." + endpoint + "/" + key);
        return result;
    }
 
    @GetMapping("/policy")
    public Map<String, String> getPolicy() {
        String endpoint = "您的EndPoint";
        String accessKeyId = "您的AccessKeyId";
        String accessKeySecret = "您的AccessKeySecret";
        String bucketName = "您的Bucket名称";
 
        OSS ossClient = new OSSClientBuilder().build(endpoint, accessKeyId, accessKeySecret);
        try {
            long expireTime = 30;
            long expireEndTime = System.currentTimeMillis() + expireTime * 1000;
            Date expiration = new Date(expireEndTime);
            PolicyConditions policyConds = new P