#yyds干货盘点# SpringBoot 整合七牛云上传图片-CFANZ编程社区

SpringBoot 上传图片

获取七牛云密钥

进入七牛云控制台
点击【头像】→【密钥管理】
创建密钥，复制保存，下面要用

导入依赖

<!--qiniu依赖-->
<dependency>
    <groupId>com.qiniu</groupId>
    <artifactId>qiniu-java-sdk</artifactId>
    <version>7.2.28</version>
</dependency>
<!--thymeleaf依赖-->
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>

配置 application.yml

spring:
  freemarker:
    suffix: .html
    cache: false
  servlet:
    multipart:
      max-file-size: 20MB
      max-request-size: 20MB

qiniu:
  accessKey: 申请的 AccessKey,AK
  accessSecretKey: 申请的 SecretKey,SK
  bucket: 创建的空间名
  imageUrl: 域名

编写 ImageUtils

图片的上传工具类

@Component
public class ImageUtils {

    @Value("${qiniu.accessKey}")
    private String accessKey;

    @Value("${qiniu.accessSecretKey}")
    private String accessSecretKey;

    @Value("${qiniu.bucket}")
    private String bucket;

    @Value("${qiniu.imageUrl}")
    private String url;

    /**
     * 处理多文件
     * @param multipartFiles
     * @return
     */
    public Map<String, List<String>> uploadImages(MultipartFile[] multipartFiles){
        Map<String,List<String>> map = new HashMap<>();
        List<String> imageUrls = new ArrayList<>();
        for(MultipartFile file : multipartFiles){
            imageUrls.add(uploadImageQiniu(file));
         }
        map.put("imageUrl",imageUrls);
        return map;
    }

    /**
     * 上传图片到七牛云
     * @param multipartFile
     * @return
     */
    private String uploadImageQiniu(MultipartFile multipartFile){
        try {
            //1、获取文件上传的流
            byte[] fileBytes = multipartFile.getBytes();
            //2、创建日期目录分隔
            SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy/MM/dd");
            String datePath = dateFormat.format(new Date());

            //3、获取文件名
            String originalFilename = multipartFile.getOriginalFilename();
            String suffix = originalFilename.substring(originalFilename.lastIndexOf("."));
            String filename = datePath+"/"+UUID.randomUUID().toString().replace("-", "")+ suffix;

            //4.构造一个带指定 Region 对象的配置类
            //Region.huabei(根据自己的对象空间的地址选
            Configuration cfg = new Configuration(Region.huabei());
            UploadManager uploadManager = new UploadManager(cfg);

            //5.获取七牛云提供的 token
            Auth auth = Auth.create(accessKey, accessSecretKey);
            String upToken = auth.uploadToken(bucket);
            uploadManager.put(fileBytes,filename,upToken);

            return url+filename;
        } catch (IOException e) {
            e.printStackTrace();
        }
        return null;
    }
}

编写 Controller

跳转到 upload.html 的接口

@Controller
public class PageController {

   @RequestMapping("/upload")
   public String to(){
       return "upload";
   }

}

图片服务接口

@RestController
@RequestMapping("/api")
public class ImageController {

   @Autowired
   private ImageUtils imageUtils;

   @PostMapping("/image/upload")
   public ResponseResult uploadImage(@RequestParam(value = "file",required = false) MultipartFile[] multipartFile){
       if(ObjectUtils.isEmpty(multipartFile)){
           return new ResponseResult(HttpResponseStatus.OK.code(), "请选择图片");
       }
       Map<String, List<String>> uploadImagesUrl = imageUtils.uploadImages(multipartFile);
       return new ResponseResult(HttpResponseStatus.OK.code(), "上传成功",uploadImagesUrl);
   }

}

注：ResponseResult 为响应结果封装类，自定义即可。

编写前端上传页面

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<form action="http://localhost:8002/api/image/upload" method="post" enctype="multipart/form-data">
    <input type="file" name="file">
    <input type="submit">
</form>
</body>

注：<input type="file" name="file">的 name 值一定要和接口的 @RequestParam("file")一样