SpringBoot整合七牛云实现文件以及图片上传

野性酷女 2023-07-21 06:23 10阅读 0赞

关于七牛云的注册以及申请存储空间这里就不详细介绍了，网上的教程很多而且注册以及申请存储空间也是比较简单的。直接进入正题，说一下整合的事情。

### 配置文件application.yml ###

qiniu:
        accessKey: xxxx-xxxx-xxxx
        secretKey: xxxx_xxxx-xxxx
        bucket: rongdi
        path: http://up-z1.qiniup.com  # 每个地区的地址都不一样

上面参数对应七牛云中的配置如下图  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQxNjIxMzYy_size_16_color_FFFFFF_t_70]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQxNjIxMzYy_size_16_color_FFFFFF_t_70 1]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQxNjIxMzYy_size_16_color_FFFFFF_t_70 2]

### 创建上传文件以及图片的配置类 ###

@Data
    @Component
    @ConfigurationProperties(prefix = "qiniu")
    public class QiNiuYunConfig { 
    
        @Value("${accessKey}")
        private String accessKey;
        @Value("${secretKey}")
        private String secretKey;
        @Value("${bucket}")
        private String bucket;
        @Value("${path}")
        private String path;
    
    
        public String uploadImgToQiNiu(FileInputStream file, String filename) { 
            // 构造一个带指定Zone对象的配置类，注意后面的zone各个地区不一样的
            Configuration cfg = new Configuration(Zone.zone1());
            // 其他参数参考类注释
            UploadManager uploadManager = new UploadManager(cfg);
            // 生成密钥
            Auth auth = Auth.create(accessKey, secretKey);
            try { 
                String upToken = auth.uploadToken(bucket);
                try { 
                    Response response = uploadManager.put(file, filename, upToken, null, null);
                    // 解析上传成功的结果
                    DefaultPutRet putRet = new Gson().fromJson(response.bodyString(), DefaultPutRet.class);
    
                    // 这个returnPath是获得到的外链地址,通过这个地址可以直接打开图片
                    String returnPath = getPath() + "/" + putRet.key;
                    return returnPath;
                } catch (QiniuException ex) { 
                    Response r = ex.response;
                    System.err.println(r.toString());
                    try { 
                        System.err.println(r.bodyString());
                    } catch (QiniuException ex2) { 
                        //ignore
                    }
                }
            } catch (Exception e) { 
                e.printStackTrace();
            }
            return "";
        }
    }

### Controller层 ###

@Controller
    public class QiNiuYunController { 
    
        @Autowired
        private QiNiuYunConfig qiNiuYunConfig;
    
        @GetMapping("/upload")
        public String upload(){ 
            return "upload";
        }
    
        @PostMapping("/qiniu")
        public String qiNiuYunUpload(@RequestParam("file")MultipartFile file,
                                     Model model) throws IOException { 
            String filename = file.getOriginalFilename();
            FileInputStream inputStream = (FileInputStream) file.getInputStream();
            //为文件重命名：uuid+filename
            filename = UUID.randomUUID()+ filename;
            String link = qiNiuYunConfig.uploadImgToQiNiu(inputStream, filename);
            model.addAttribute("link", link);
            return "upload";
        }
    }

### HTML代码 ###

<!DOCTYPE html>
    <html lang="en" xmlns:th="http://www.thymeleaf.org">
    <head>
        <meta charset="UTF-8">
        <title>上传文件</title>
    </head>
    <body>
    <form action="/qiniu" method="post" enctype="multipart/form-data">
        <label>上传图片</label>
        <input type="file" name="file"/>
        <input type="submit" value="上传"/>
        <p>回显图片:</p>
        <img th:src="${link}"/>
    </form>
    </body>
    </html>

### 效果如下 ###

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQxNjIxMzYy_size_16_color_FFFFFF_t_70 3]

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQxNjIxMzYy_size_16_color_FFFFFF_t_70]: /images/20230528/cff1b22831a44f49b0bf45db966278fb.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQxNjIxMzYy_size_16_color_FFFFFF_t_70 1]: /images/20230528/f24360ae9d8c4bf78b0757cee3f28fed.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQxNjIxMzYy_size_16_color_FFFFFF_t_70 2]: /images/20230528/4d18ea95b3964882b272f0f4805430be.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQxNjIxMzYy_size_16_color_FFFFFF_t_70 3]: /images/20230528/a94fe50e7a3041ad91cf8db962f5ec0d.png