11.12 ali-oss上传图片

1.上传到服务器：

    @PostMapping("/upload")
    public String upload(MultipartFile file) {
        if (file.isEmpty()) {
            return "图片上传失败";
        }
        System.out.println();
        String OriginalfileName = file.getOriginalFilename();
        String ext=OriginalfileName.substring(OriginalfileName.lastIndexOf("."));
        String uuid= UUID.randomUUID().toString().replace("-","");
        String fileName = uuid + ext;
        ApplicationHome applicationHome = new ApplicationHome(this.getClass());
        String pre = applicationHome.getDir().getParentFile().getParentFile().getAbsolutePath()+"\\src\\main\\resources\\images\\";
        String path=pre+fileName;
//        System.out.println(path);
        try {
            file.transferTo(new File(path));
        } catch (IOException e) {
            throw new RuntimeException(e);
        }
        return path;
    }

如果项目部署在多台服务器上，这样的话如果用户上传时是服务器1，之后访问服务器2就访问不到之前的文件了。

2.上传到oss阿里云对象存储

UploadUtil.java

package com.haole.testdemo1.Utils;

import com.aliyun.oss.OSS;
import com.aliyun.oss.OSSClientBuilder;
import org.apache.commons.io.FilenameUtils;
import org.springframework.web.multipart.MultipartFile;

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

public class UploadUtil {
    public static final String ALI_DOMAIN="https://(自己的domain名).oss-cn-beijing.aliyuncs.com/";
    public String uploadImage(MultipartFile file) throws IOException {
        String originalFileName = file.getOriginalFilename();
        String ext="."+ FilenameUtils.getExtension(originalFileName);
        String uuid= UUID.randomUUID().toString().replace("-","");
        String fileName = uuid + ext;
        //地域节点
        String endpoint="http://oss-cn-beijing.aliyuncs.com";
        String accessKeyId="自己的accessKeyId";
        String accessKeySecret="自己的accessKeySecret";
        OSS ossclient= new OSSClientBuilder().build(endpoint,accessKeyId,accessKeySecret);
        ossclient.putObject("vastjoyupload",fileName,file.getInputStream());
        ossclient.shutdown();
        return ALI_DOMAIN+fileName;
    }
}

调用工具类实现上传接口

    @PostMapping("/uploadImg")
    public String upload2(MultipartFile file) throws IOException {

        UploadUtil uploadUtil=new UploadUtil();
        String result = uploadUtil.uploadImage(file);
        return result;

    }