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歡迎使用阿里云開發者工具套件（Alibaba Cloud SDK for Java），此部分為OpenAPI的SDK文檔說明。Alibaba Cloud SDK for Java讓您不用復雜編程即可對云數據庫Cassandra實例進行管理，包括創建、升級、刪除實例、白名單、標簽管理等，有別于訪問Cassandra實例的SDK。本教程介紹如何安裝并開始使用Alibaba Cloud SDK for Java。

前提條件

已創建AccessKey，具體請參見獲取AccessKey。

在線調試和生成SDK示例

OpenAPI Explorer提供在線調用云產品API、動態生成SDK示例代碼和快速檢索接口等功能，能顯著降低使用API的難度，推薦您使用。進入頁面后，選擇Cassandra產品，系統提供了接口列表，并且每個接口提供了各個語言的調試demo。

下載并安裝Alibaba Cloud SDK for Java

您可以通過添加Maven依賴或者導入Jar文件來安裝Alibaba Cloud SDK for Java，詳細說明請參見安裝Alibaba Cloud SDK for Java。

說明

通過Maven下載SDK包時，請下載最新版本。

示例demo

調用DescribeClusterRequest獲取Cassandra集群信息

設置環境參數

DefaultProfile profile = DefaultProfile.getProfile("cn-hangzhou",
                "LTAI4FnvzUftE**********", "PxPzgelK1XCkWBXW***********");
// 以下非必選項，可默認
DefaultProfile.addEndpoint(
                        "cn-hangzhou",    // 地域ID
                        "cassandra",    // 產品編碼
                        "cassandra.aliyuncs.com"    // 接入地址，即域名
);

初始化客戶端

IAcsClient client = new DefaultAcsClient(profile);

構造請求對象

DescribeClusterRequest request = new DescribeClusterRequest();
request.setClusterId("cds-wz9bui92****697r");

請求調用

DescribeClusterResponse response;
try {
        response = client.getAcsResponse(request);
        System.out.println(new Gson().toJson(response));
} catch (ClientException e) {
        e.printStackTrace();
}

參考示例

DefaultProfile profile = DefaultProfile.getProfile("cn-hangzhou",
                "ak******************", "akSecret********************");
DefaultProfile.addEndpoint(
                "cn-hangzhou",    // 地域ID
                "cassandra",    // 產品編碼
                "cassandra.aliyuncs.com"    // 接入地址，即域名
);
IAcsClient client = new DefaultAcsClient(profile);
DescribeClusterRequest request = new DescribeClusterRequest();
request.setClusterId("cds-wz9bui92****697r");
DescribeClusterResponse response;
try {
        response = client.getAcsResponse(request);
        System.out.println(new Gson().toJson(response));
} catch (ClientException e) {
        e.printStackTrace();
}

響應示例

{
  "RequestId": "3B235CE2-2339-42A8-A11D-5F7548519AD2",
  "Cluster": {
    "Status": "Running",
    "MajorVersion": "3.11",
    "CreatedTime": "2020-04-21T08:50:04Z",
    "ClusterId": "cds-wz9bui92****6973",
    "MinorVersion": "3.11.9",
    "PayType": "PayAsYouGo",
    "LockMode": "Expired",
    "IsLatestVersion": true,
    "MaintainEndTime": "22:00Z",
    "DataCenterCount": 1,
    "ClusterName": "auto_test20200421170214",
    "MaintainStartTime": "18:00Z",
    "Tags": {
      "Tag": [
        {
          "Value": "1",
          "Key": "test"
        },
        {
          "Value": "2",
          "Key": "test2"
        }
      ]
    }
  }
}

調用CreateCluster創建Cassandra集群

設置環境參數

DefaultProfile profile = DefaultProfile.getProfile("cn-hangzhou",
                "LTAI4FnvzUftE**********", "PxPzgelK1XCkWBXW***********");
// 以下非必選項，可默認
DefaultProfile.addEndpoint(
                        "cn-hangzhou",    // 地域ID
                        "cassandra",    // 產品編碼
                        "cassandra.aliyuncs.com"    // 接入地址，即域名
);

初始化客戶端

IAcsClient client = new DefaultAcsClient(profile);

構造請求對象

CreateClusterRequest request = new CreateClusterRequest();
//必填參數
request.setPayType("PayAsYouGo");
request.setRegionId("cn-hangzhou");
request.setZoneId("cn-hangzhou-e");
request.setMajorVersion("3.11");
request.setInstanceType("cassandra.c.large");
request.setNodeCount("2");
request.setVpcId("vpc-wz9s6dl6nttp1****ydur");
request.setVswitchId("vsw-wz9c90poaus9q****1dxl");
//非必填參數
request.setPeriodUnit("Year");//若付費類型為Subscription則該參數必須傳入。
request.setPeriod("12");//若付費類型為Subscription則該參數必須傳入。
request.setAutoRenew("false");//若付費類型為Subscription則該參數必須傳入。
request.setAutoRenewPeriod("3");//若付費類型為Subscription則該參數必須傳入。
request.setClientToken("ETnLKlblzczshOTUbOCzxxxxxxxxxx");
request.setClusterName("cassandra_01");
request.setDataCenterName("cassandra_dc_01");
request.setDiskType("cloud_ssd");
request.setDiskSize("160");
request.setPassword("Cassandra1@!");

請求調用

CreateClusterResponse response;
try {
        response = client.getAcsResponse(request);
        System.out.println(new Gson().toJson(response));
} catch (ClientException e) {
        e.printStackTrace();
}

參考示例

DefaultProfile profile = DefaultProfile.getProfile("cn-hangzhou",
                "ak******************", "akSecret********************");
DefaultProfile.addEndpoint(
                "cn-hangzhou",    // 地域ID
                "cassandra",    // 產品編碼
                "cassandra.aliyuncs.com"    // 接入地址，即域名
);
IAcsClient client = new DefaultAcsClient(profile);
CreateClusterRequest request = new CreateClusterRequest();
//必填參數
request.setPayType("PayAsYouGo");
request.setRegionId("cn-hangzhou");
request.setZoneId("cn-hangzhou-e");
request.setMajorVersion("3.11");
request.setInstanceType("cassandra.c.large");
request.setNodeCount("2");
request.setVpcId("vpc-wz9s6dl6nttp1****ydur");
request.setVswitchId("vsw-wz9c90poaus9q****1dxl");
//非必填參數
request.setPeriodUnit("Year");//若付費類型為Subscription則該參數必須傳入。
request.setPeriod("12");//若付費類型為Subscription則該參數必須傳入。
request.setAutoRenew("false");//若付費類型為Subscription則該參數必須傳入。
request.setAutoRenewPeriod("3");//若付費類型為Subscription則該參數必須傳入。
request.setClientToken("ETnLKlblzczshOTUbOCzxxxxxxxxxx");
request.setClusterName("cassandra_01");
request.setDataCenterName("cassandra_dc_01");
request.setDiskType("cloud_ssd");
request.setDiskSize("160");
request.setPassword("Cassandra1@!");
CreateClusterResponse response;
try {
        response = client.getAcsResponse(request);
        System.out.println(new Gson().toJson(response));
} catch (ClientException e) {
        e.printStackTrace();
}

響應示例

{
    "ClusterId":"hb-bp16o0pd5****582s",
    "RequestId":"728C7EAF-4844-4D42-9BBE-DFFFBB77CF33"
}

調用ResizeNodeCount擴容數據中心的節點

設置環境參數

DefaultProfile profile = DefaultProfile.getProfile("cn-hangzhou",
                "LTAI4FnvzUftE**********", "PxPzgelK1XCkWBXW***********");
// 以下非必選項，可默認
DefaultProfile.addEndpoint(
                        "cn-hangzhou",    // 地域ID
                        "cassandra",    // 產品編碼
                        "cassandra.aliyuncs.com"    // 接入地址，即域名
);

初始化客戶端

IAcsClient client = new DefaultAcsClient(profile);

構造請求對象

ResizeNodeCountRequest request = new ResizeNodeCountRequest();
request.setClusterId("cds-bp1b136j****5d59");
request.setDataCenterId("cn-hangzhou-g");
request.setNodeCount("3");

請求調用

ResizeNodeCountResponse response;
try {
        response = client.getAcsResponse(request);
        System.out.println(new Gson().toJson(response));
} catch (ClientException e) {
        e.printStackTrace();
}

參考示例

DefaultProfile profile = DefaultProfile.getProfile("cn-hangzhou",
                "ak******************", "akSecret********************");
DefaultProfile.addEndpoint(
                "cn-hangzhou",    // 地域ID
                "cassandra",    // 產品編碼
                "cassandra.aliyuncs.com"    // 接入地址，即域名
);
IAcsClient client = new DefaultAcsClient(profile);
ResizeNodeCountRequest request = new ResizeNodeCounttaRequest();
request.setClusterId("cds-bp1b136j****5d59");
request.setDataCenterId("cn-hangzhou-g");
request.setNodeCount("3");
ResizeNodeCountResponse response;
try {
        response = client.getAcsResponse(request);
        System.out.println(new Gson().toJson(response));
} catch (ClientException e) {
        e.printStackTrace();
}

響應示例

{
    "RequestId": "D7D3088F-AA4F-49C3-BB46-B04F3E35041A"
}

調用DeleteCluster刪除Cassandra集群

設置環境參數

DefaultProfile profile = DefaultProfile.getProfile("cn-hangzhou",
                "LTAI4FnvzUftE**********", "PxPzgelK1XCkWBXW***********");
// 以下非必選項，可默認
DefaultProfile.addEndpoint(
                        "cn-hangzhou",    // 地域ID
                        "cassandra",    // 產品編碼
                        "cassandra.aliyuncs.com"    // 接入地址，即域名
);

初始化客戶端

IAcsClient client = new DefaultAcsClient(profile);

構造請求對象

DeleteClusterRequest request = new DeleteClusterRequest();
request.setClusterId("cds-bp1hy2ipk****46k");

請求調用

DeleteClusterResponse response;
try {
        response = client.getAcsResponse(request);
        System.out.println(new Gson().toJson(response));
} catch (ClientException e) {
        e.printStackTrace();
}

參考示例

DefaultProfile profile = DefaultProfile.getProfile("cn-hangzhou",
                "ak******************", "akSecret********************");
DefaultProfile.addEndpoint(
                "cn-hangzhou",    // 地域ID
                "cassandra",    // 產品編碼
                "cassandra.aliyuncs.com"    // 接入地址，即域名
);
IAcsClient client = new DefaultAcsClient(profile);
DeleteClusterRequest request = new DeleteClusterRequest();
request.setClusterId("cds-bp1hy2ipk****46k");
DeleteClusterResponse response;
try {
        response = client.getAcsResponse(request);
        System.out.println(new Gson().toJson(response));
} catch (ClientException e) {
        e.printStackTrace();
}

響應示例

{
    "RequestId":"728C7EAF-4844-4D42-9BBE-DFFFBB77CF33"
}

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Java SDK for Cassandra OpenAPI使用參考

前提條件

在線調試和生成SDK示例

下載并安裝Alibaba Cloud SDK for Java

示例demo

調用DescribeClusterRequest獲取Cassandra集群信息

參考示例

響應示例

調用CreateCluster創建Cassandra集群

參考示例

響應示例

調用ResizeNodeCount擴容數據中心的節點

參考示例

響應示例

調用DeleteCluster刪除Cassandra集群

參考示例

響應示例