SpringSpringBoot上传文件到七牛云

准备工作

maven

pom.xml添加七牛云的sdk依赖

        <dependency>


        &lt;groupId&gt;com.qiniu&lt;/groupId&gt;<br/>
        &lt;artifactId&gt;qiniu-java-sdk&lt;/artifactId&gt;<br/>
        &lt;version&gt;7.2.27&lt;/version&gt;<br/>
    &lt;/dependency&gt;<br/>

配置项

七牛云上传必要的配置有：accessKey、secretKey、bucket

其中accessKey、secretKey在该网址可查看

bucket为你的存储空间名，如下：

application.yml配置

upload:

  qiniu:


domain: 填你的域名<br/>
access-key: 你的accesskey<br/>
secret-key: 你的secretKey<br/>
bucket: 你的存储空间名，我这里为colablog<br/>

domain

上传配置类

@ConfigurationProperties@ComponentUploadProperties

import org.springframework.boot.context.properties.ConfigurationProperties;

import org.springframework.stereotype.Component;
/**



@author Johnson

@date 2019/12/16/ 09:35:36

*/

@Component

@ConfigurationProperties(prefix = “upload”)

public class UploadProperties {
private Local local = new Local();
public Local getLocal() {

    return local;

}
/**



@author: Johnson

@Date: 2019/12/16

本地上传配置

*/

public class Local {

…

}
private Qiniu qiniu = new Qiniu();
public Qiniu getQiniu() {

return qiniu;

}
/**

@author: Johnson

@Date: 2019/12/16

七牛云上传配置

*/

public class Qiniu {

/**



域名

*/

private String domain;
/**

从下面这个地址中获取accessKey和secretKey

https://portal.qiniu.com/user/key

*/

private String accessKey;
private String secretKey;
/**

存储空间名

*/

private String bucket;
public String getDomain() {

return domain;

}
public void setDomain(String domain) {

this.domain = domain;

}
public String getAccessKey() {

return accessKey;

}
public void setAccessKey(String accessKey) {

this.accessKey = accessKey;

}
public String getSecretKey() {

return secretKey;

}
public void setSecretKey(String secretKey) {

this.secretKey = secretKey;

}
public String getBucket() {

return bucket;

}
public void setBucket(String bucket) {

this.bucket = bucket;

}

}

}

七牛云上传接口和类

上传接口如下：

public interface UploadFile {

String uploadFile(MultipartFile file);

}

上传类

import cn.colablog.blogserver.utils.properties.UploadProperties;

import com.qiniu.http.Response;

import com.qiniu.storage.Configuration;

import com.qiniu.storage.Region;

import com.qiniu.storage.UploadManager;

import com.qiniu.util.Auth;

import org.springframework.web.multipart.MultipartFile;
import java.io.IOException;

import java.util.UUID;
/**



@author Johnson

@date 2019/12/14/ 17:20:16

上传文件到七牛云

*/

public class UploadFileQiniu implements UploadFile {
private UploadProperties.Qiniu properties;
//构造一个带指定Region对象的配置类

private Configuration cfg = new Configuration(Region.region2());
private UploadManager uploadManager= new UploadManager(cfg);
public UploadFileQiniu(UploadProperties.Qiniu properties) {

    this.properties = properties;

}
/**



@author: Johnson

*/

@Override

public String uploadFile(MultipartFile file) {

Auth auth = Auth.create(properties.getAccessKey(), properties.getSecretKey());

String token = auth.uploadToken(properties.getBucket());

try {

    String originalFilename = file.getOriginalFilename();

    // 文件后缀

    String suffix = originalFilename.substring(originalFilename.lastIndexOf(“.”));

    String fileKey = UUID.randomUUID().toString() + suffix;

    Response response = uploadManager.put(file.getInputStream(), fileKey, token, null, null);

    return properties.getDomain() + fileKey;

} catch (IOException e) {

    e.printStackTrace();

}

return “error”;

}

}

RegionRegion.region2()Region

好了，准备工作已完成，现在就到调用了，调用类如下：

@RestController

@RequestMapping(“/upload”)

public class UploadFileController {

@Autowired

UploadProperties uploadProperties;
@PostMapping(“/img”)

public String uploadFileYun(MultipartFile file) {

// 上传到七牛云

UploadFile uploadFile = new UploadFileQiniu(uploadProperties.getQiniu());

return uploadFile.uploadFile(file);

}

}

是不是很简单呢？屁啊！简单个毛线，其实这个我是已经简化了，实际上在我的项目的结构是比这个复杂的。

Upload

@Component

三：配置文件我为什么会想到使用内部类来分割配置项呢？其实大家在编写一些类似功能的时候，都可以去参照一下别人的源码，当然，这里指的是大神的源码。因为我在写配置项的时候就想看看大神的配置项是怎么写的，就点进了rabbitmq的配置项。所以啊，看到了大神的代码是真的有长进的。

如果你需要查看更详细的官方文档，请点击下方链接：

最后：感谢大家的阅读，Thanks♪(･ω･)ﾉ

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