阿里雲提供CDN的多種重新整理方式，可以通過阿里雲控制檯重新整理，也可以直接通過阿里雲的SDK進行CDN重新整理，本文主要記錄使用JAVA API重新整理CDN。
1.CDN操作前提是已經開通了阿里雲CDN服務，拿到AccessKeyID和AccessKeySecret。
API說明手冊
2.引入SDK，主要使用maven：

<dependency>
  <groupId>com.aliyun</groupId>
  <artifactId>aliyun-java-sdk-cdn</artifactId>
  <version
 
>2.2.3</version>
</dependency>

<dependency>
  <groupId>com.aliyun</groupId>
  <artifactId>aliyun-java-sdk-core</artifactId>
  <version>3.0.6</version>
</dependency>

引入maven可以從阿里雲上獲取：
maven倉庫：下載最新版本SDK
github原始碼庫：這裡寫連結內容
3.初始化client：

public
 
 static void init() throws ClientException {
        IClientProfile profile = DefaultProfile.getProfile("cn-hangzhou",  
        "<your accessKey>", "<your accessSecret>");
        client = new DefaultAcsClient(profile);
    }

4.CDN API呼叫：

    /**
     * 重新整理資源方式-域名和資源路徑分開
     */
    public
 
 static void purgeObjectCaches() {
        PurgeObjectCachesRequest request = new PurgeObjectCachesRequest();
        //要重新整理的域名
        request.setDomainName("<only your domain name>");
        //要重新整理的檔案路徑
        request.setObjectPath("<file path in your domain>");
        //重新整理型別，預設是File,重新整理目錄為Directory
        request.setObjectType("File");
        //設定返回格式為JSON
        request.setAcceptFormat(FormatType.JSON);

        try {
            HttpResponse httpResponse = client.doAction(request);
            System.out.println(httpResponse.getUrl());
            System.out.println(new String(httpResponse.getContent()));
            System.out.println(httpResponse.getStatus());
        } catch (ServerException e) {
            e.printStackTrace();
        } catch (ClientException e) {
            e.printStackTrace();
        }
    }


    /**
     * 重新整理資源方式-域名和資源路徑不分開
     */
    public static void refreshObjectCaches() {
        RefreshObjectCachesRequest request = new RefreshObjectCachesRequest();
        //要重新整理的URI
        request.setObjectPath("<your complete resourse url>");
        //重新整理型別，預設是File,重新整理目錄為Directory
        request.setObjectType("File");
        //設定返回格式為JSON
        request.setAcceptFormat(FormatType.JSON);

        try {
            HttpResponse httpResponse = client.doAction(request);
            System.out.println(httpResponse.getUrl());
            System.out.println(new String(httpResponse.getContent()));
            System.out.println(httpResponse.getStatus());
        } catch (ServerException e) {
            e.printStackTrace();
        } catch (ClientException e) {
            e.printStackTrace();
        }
    }

    /**
     * 查詢資源重新整理紀錄
     */
    public static void describeRefreshTasks() {
        DescribeRefreshTasksRequest request = new DescribeRefreshTasksRequest();
        //request.setTaskId("<your taskid>");
        request.setObjectPath("<your complete url>");
        request.setPageSize(10);
        request.setPageNumber(1);
        //設定返回格式為JSON
        request.setAcceptFormat(FormatType.JSON);

        try {
            HttpResponse httpResponse = client.doAction(request);
            System.out.println(httpResponse.getUrl());
            System.out.println(new String(httpResponse.getContent()));
            System.out.println(httpResponse.getStatus());
    } catch (ServerException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    } catch (ClientException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }

    }

    /**
     * 查詢CDN重新整理剩餘量
     */
    public static void describeRefreshQuota() {

        DescribeRefreshQuotaRequest request = new DescribeRefreshQuotaRequest();
        //設定返回格式為JSON
        request.setAcceptFormat(FormatType.JSON);

        try {
            HttpResponse httpResponse = client.doAction(request);
            System.out.println(httpResponse.getUrl());
            System.out.println(new String(httpResponse.getContent()));
            System.out.println(httpResponse.getStatus());
        } catch (ServerException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (ClientException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

    }