七牛云如何上传图片

七牛云上传图片的方法：

1，注册七牛云账号，

2，创建一个存储空间bucket，创建的时候回送一个临时的测试域名，这个等上传工具类要用到 ，有效期30天，

3，写java工具类

public class upLoadFile {
//...生成上传凭证，然后准备上传   这个是在注册的账户里面有个人中心那里的密钥管理
1
public static String accessKey = “h9r4Vz72dIAEL2PLSYXFEv39GmUOsw99y7wkbQQW”;
public static String secretKey = “BWhiWbB7D-lWkI2bP2c6wBYRbak3MzmcUeoyTaNv”;
// public static String bucket = “vehicle-picture”;
//这个是创建的存储空间的名字
public static String bucket = “image-a”;
//这个就是测试域名 创建的时候一般都会赠送一个测试域名
// public static String domainOfBucket = “http://qn.vwaiter.cn”;
public static String domainOfBucket = “pn7fhqast.bkt.clouddn.com”;
public static void main(String[] args)
{
getUrl(“FpMjfsJwwMDYC-IXjMIhWm9xiYt4”);
}
/**
 * 上传图片
 * @param file
 * @return
 */
public  static String  uploadFile(MultipartFile file) {
    //构造一个带指定Zone对象的配置类
    Configuration cfg = new Configuration(Zone.zone0());
    //...其他参数参考类注释
    UploadManager uploadManager = new UploadManager(cfg);
    //默认不指定key的情况下，以文件内容的hash值作为文件名
    String fileName=null;
    String key = null;
    try {
        Logger.getLogger("start>>>>>>>>>>").info("图片上传");
        byte[] uploadBytes=file.getBytes();
        ByteArrayInputStream byteInputStream=new ByteArrayInputStream(uploadBytes);
        Auth auth = Auth.create(accessKey, secretKey);
        String upToken = auth.uploadToken(bucket);
        Response response = uploadManager.put(byteInputStream,key,upToken,null, null);
        DefaultPutRet putRet = new Gson().fromJson(response.bodyString(), DefaultPutRet.class);
        //key为空时默认使用hash值作为key
        System.out.println(putRet.key);
        System.out.println(putRet.hash);
        fileName=putRet.hash;
        Logger.getLogger("end>>>>>>>>>>").info("图片上传");
    }catch (QiniuException ex) {
        Response r = ex.response;
        System.err.println(r.toString());
    }
    catch (IOException e) {
        e.printStackTrace();
    }
    return fileName;
}
/**
 * 上传图片
 * @param bytes 要上传图片的字节流
 * @return
 */
public  static String  uploadFile(byte[] bytes) {
    //构造一个带指定Zone对象的配置类
    Configuration cfg = new Configuration(Zone.zone0());
    //...其他参数参考类注释
    UploadManager uploadManager = new UploadManager(cfg);
    //默认不指定key的情况下，以文件内容的hash值作为文件名
    String fileName=null;
    String key = null;
    try {
        Logger.getLogger("start>>>>>>>>>>").info("图片上传");
        byte[] uploadBytes=bytes;
        ByteArrayInputStream byteInputStream=new ByteArrayInputStream(uploadBytes);
        Auth auth = Auth.create(accessKey, secretKey);
        String upToken = auth.uploadToken(bucket);
        Response response = uploadManager.put(byteInputStream,key,upToken,null, null);
        DefaultPutRet putRet = new Gson().fromJson(response.bodyString(), DefaultPutRet.class);
        //key为空时默认使用hash值作为key
        System.out.println(putRet.key);
        System.out.println(putRet.hash);
        fileName=putRet.hash;
        Logger.getLogger("end>>>>>>>>>>").info("图片上传");
    }catch (QiniuException ex) {
        Response r = ex.response;
        System.err.println(r.toString());
    }
    catch (IOException e) {
        e.printStackTrace();
    }
    return fileName;
}
/**
 * 字节数组上传
 * @return
 */
public static String upLoadByte(byte[] data) {
    Configuration cfg = new Configuration(Zone.zone0());
    UploadManager uploadManager = new UploadManager(cfg);
    String fileName=null;
    String key = null;
    try {
        byte[] uploadBytes = "hello qiniu cloud".getBytes("utf-8");
        Auth auth = Auth.create(accessKey, secretKey);
        String upToken = auth.uploadToken(bucket);
        try {
            Response response = uploadManager.put(data, key, upToken);
            //解析上传成功的结果
            DefaultPutRet putRet = new Gson().fromJson(response.bodyString(), DefaultPutRet.class);
            System.out.println(putRet.key);
            System.out.println(putRet.hash);
            fileName=putRet.hash;
        } catch (QiniuException ex) {
            Response r = ex.response;
            System.err.println(r.toString());
            try {
                System.err.println(r.bodyString());
            } catch (QiniuException ex2) {
                //ignore
            }
        }
    } catch (UnsupportedEncodingException ex) {
    }
    return fileName;
}
/**
 * 生成加签访问url
 */
public  static String getUrl(String key) {
    String finalUrl=null;
    String fileName = key;
    String encodedFileName = null;
    try {
        encodedFileName = URLEncoder.encode(fileName, "utf-8");
        String publicUrl = String.format("%s/%s", domainOfBucket, encodedFileName);
        Auth auth = Auth.create(accessKey, secretKey);
        long expireInSeconds = 10800;//1小时，可以自定义链接过期时间
        finalUrl = auth.privateDownloadUrl(publicUrl, expireInSeconds);
     } catch (UnsupportedEncodingException e) {
        e.printStackTrace();
     }
    System.out.println(finalUrl);
    return finalUrl;
}
/**
 * 生成加签访问url
 */
public  static String getUrl1(String key) {
    String finalUrl=null;
    String fileName = key;
    String encodedFileName = null;
    try {
        encodedFileName = URLEncoder.encode(fileName, "utf-8");
        String publicUrl = String.format("%s/%s", domainOfBucket, encodedFileName);
        Auth auth = Auth.create(accessKey, secretKey);
        long expireInSeconds = 10800;//1小时，可以自定义链接过期时间
        finalUrl = auth.privateDownloadUrl(publicUrl, expireInSeconds);
    }
    catch (UnsupportedEncodingException e) {
        e.printStackTrace();
    }
    System.out.println(finalUrl);
    return finalUrl;
}
//删除上传到七牛云的图片
public static boolean deleteOnQn(String key) throws Exception {
    //密钥配置
    try {
        Auth auth = Auth.create(accessKey,secretKey);
        Configuration configuration = new Configuration(Zone.autoZone());
        BucketManager bucketManager = new BucketManager(auth,configuration);
        bucketManager.delete(bucket,key);
    } catch (QiniuException e) {
        e.printStackTrace();
        throw e;
    }
    return true;
}

4，需要的依赖架

<dependency>
  <groupId>com.qiniu</groupId>
  <artifactId>qiniu-java-sdk</artifactId>
  <version>7.2.11</version>
  <scope>compile</scope>
</dependency>
<dependency>
  <groupId>com.squareup.okhttp3</groupId>
  <artifactId>okhttp</artifactId>
  <version>3.3.1</version>
  <scope>compile</scope>
</dependency>
<dependency>
  <groupId>com.google.code.gson</groupId>
  <artifactId>gson</artifactId>
  <version>2.6.2</version>
  <scope>compile</scope>
</dependency>
<dependency>
  <groupId>com.qiniu</groupId>
  <artifactId>happy-dns-java</artifactId>
  <version>0.1.4</version>
  <scope>compile</scope>
</dependency>
<dependency>
  <groupId>junit</groupId>
  <artifactId>junit</artifactId>
  <version>4.12</version>
  <scope>test</scope>
</dependency>
<!--七牛云图片服务器相关依赖结束-->

5，xml里面需要文件上传处理

<!--文件上传处理器  -->
<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
<property name="maxUploadSize" value="5000000"/>
<property name="defaultEncoding" value="UTF-8"/>
</bean>

6，写上传接口的controller和service以及serviceimpl，

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