CloudStack4.4开发，API调用java实例

来源：互联网发布：极域电子教室软件编辑：程序博客网时间：2024/06/07 07:19

CloudStack API开发没有java例子很是苦恼，原站点文档只有python，所以研究了一把源码自己写了一个java版本开发的例子：

代码如下：

import java.io.IOException;
import java.io.InputStream;

import java.net.URLEncoder;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
import java.util.HashMap;
import java.util.Map;

import javax.crypto.Mac;
import javax.crypto.spec.SecretKeySpec;
import javax.xml.parsers.DocumentBuilder;

import org.apache.commons.codec.binary.Base64;

import org.apache.commons.httpclient.HttpClient;
import org.apache.commons.httpclient.HttpException;

import org.apache.commons.httpclient.methods.GetMethod;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.NodeList;

import javax.xml.parsers.DocumentBuilderFactory;

public class test1 {
   private static DocumentBuilderFactory factory = DocumentBuilderFactory
           .newInstance();

   /**
   * @param args
   * @throws NoSuchAlgorithmException
   * @throws InvalidKeyException
   * @throws IOException
   * @throws HttpException
   */
   public static void main(String[] args) throws InvalidKeyException,
           NoSuchAlgorithmException, HttpException, IOException {
       // TODO Auto-generated method stub

       String developerServer = "http://10.11.1.212:8080/client/api";
       String ApiKey = "7hyD4QRRcNkC59ARxCRCO3cFoowcGmBDY5F23qmWwxYdQT22plI6GY7R1EDBWdiRj4-ktSE00HeDlk38EXZszw";
       String s_secretKey = "bR493wms46oujIJxKST6qkTH069pFdnzeQYFGgKqLsaotU5Dgugolnbx48Dq3NJSjYu06qXmINYVBkC0K-b2jQ";
       String encodedApiKey = URLEncoder.encode(ApiKey, "UTF-8");
       String encodedPublicIpId = "", encodedVmId = "";
       String urlold = "apikey=" + encodedApiKey + "&command=listUsers";
       urlold = urlold.toLowerCase();
       String signature = signRequest(urlold, s_secretKey);
       String encodedSignature = URLEncoder.encode(signature, "UTF-8");

       String url = developerServer + "?command=listUsers&apikey="
               + encodedApiKey + "&signature=" + encodedSignature;
       HttpClient client = new HttpClient();
       GetMethod method = new GetMethod(url);
       System.out.println(url);
       int responseCode = client.executeMethod(method);

       // s_logger.info("url is " + url);
       // s_logger.info("list ip addresses for user " + userId +
       // " response code: " + responseCode);
       if (responseCode == 200) {
           InputStream is = method.getResponseBodyAsStream();
           Map<String, String> success = getSingleValueFromXML(is,
                   new String[] { "accountid" });
           System.out.print(success.get("accountid"));
           // s_logger.info("Enable Static NAT..success? " +
           // success.get("success"));
       } else {
           // s_logger.error("Enable Static NAT failed with error code: " +
           // responseCode + ". Following URL was sent: " + url);
           // return responseCode;
       }

   }

   public static String signRequest(String request, String secretkey)
           throws NoSuchAlgorithmException, InvalidKeyException {
       Mac mac = Mac.getInstance("HmacSHA1");
       SecretKeySpec keySpec = new SecretKeySpec(secretkey.getBytes(),
               "HmacSHA1");
       mac.init(keySpec);
       mac.update(request.getBytes());
       byte[] encryptedBytes = mac.doFinal();
       // System.out.println("HmacSHA1 hash: " + encryptedBytes);
       return new String(Base64.encodeBase64(encryptedBytes));
   }

   public static Map<String, String> getSingleValueFromXML(InputStream is,
           String[] tagNames) {
       Map<String, String> returnValues = new HashMap<String, String>();
       try {
           DocumentBuilder docBuilder = factory.newDocumentBuilder();
           Document doc = docBuilder.parse(is);
           Element rootElement = doc.getDocumentElement();

           for (int i = 0; i < tagNames.length; i++) {
               NodeList targetNodes = rootElement
                       .getElementsByTagName(tagNames[i]);
               if (targetNodes.getLength() <= 0) {
                   // s_logger.error("no " + tagNames[i] +
                   // " tag in XML response...returning null");
               } else {
                   returnValues.put(tagNames[i], targetNodes.item(0)
                           .getTextContent());
               }
           }
       } catch (Exception ex) {
           // s_logger.error("error processing XML", ex);
       }
       return returnValues;
   }
}

=================================================

控制台返回结果：

http://10.11.1.212:8080/client/api?command=listUsers&apikey=7hyD4QRRcNkC59ARxCRCO3cFoowcGmBDY5F23qmWwxYdQT22plI6GY7R1EDBWdiRj4-ktSE00HeDlk38EXZszw&signature=YKesN%2FiaEkkS36iue6RSE0ZYvVU%3D
0001dcae-1c4e-11e4-9ef8-000c29cff73b

==================================

在浏览器中将url贴上去，也可以返回整个XML：

<listusersresponse cloud-stack-version="4.4.0"><count>1</count><user><id>0001e898-1c4e-11e4-9ef8-000c29cff73b</id><username>admin</username><firstname>admin</firstname><lastname>cloud</lastname><created>2014-08-05T19:10:06+0800</created><state>enabled</state><account>admin</account><accounttype>1</accounttype><domainid>c4bf5d1a-1c4d-11e4-9ef8-000c29cff73b</domainid><domain>ROOT</domain><apikey>7hyD4QRRcNkC59ARxCRCO3cFoowcGmBDY5F23qmWwxYdQT22plI6GY7R1EDBWdiRj4-ktSE00HeDlk38EXZszw</apikey><secretkey>bR493wms46oujIJxKST6qkTH069pFdnzeQYFGgKqLsaotU5Dgugolnbx48Dq3NJSjYu06qXmINYVBkC0K-b2jQ</secretkey><accountid>0001dcae-1c4e-11e4-9ef8-000c29cff73b</accountid><iscallerchilddomain>false</iscallerchilddomain><isdefault>true</isdefault></user></listusersresponse>

=======================================================================================

java引用了几个apache的公用类包：

commons-codec-1.3.jar

commons-httpclient-3.1.jar

commons-logging.jar

jdk版本为1.7

=======================================================================================

官网API参考地址：

http://cloudstack.apache.org/docs/api/

=======================================================================================

测试另外一个API，listNetworks,API说明在此：http://cloudstack.apache.org/docs/api/apidocs-4.4/root_admin/listNetworks.html

修改main()方法：

    public static void main(String[] args) throws InvalidKeyException,
           NoSuchAlgorithmException, HttpException, IOException {
       // TODO Auto-generated method stub

       String developerServer = "http://10.11.1.212:8080/client/api";
       String ApiKey = "7hyD4QRRcNkC59ARxCRCO3cFoowcGmBDY5F23qmWwxYdQT22plI6GY7R1EDBWdiRj4-ktSE00HeDlk38EXZszw";
       String s_secretKey = "bR493wms46oujIJxKST6qkTH069pFdnzeQYFGgKqLsaotU5Dgugolnbx48Dq3NJSjYu06qXmINYVBkC0K-b2jQ";
       String encodedApiKey = URLEncoder.encode(ApiKey, "UTF-8");
       String encodedPublicIpId = "", encodedVmId = "";
       //String urlold = "apikey=" + encodedApiKey + "&command=listUsers";
       String urlold = "apikey=" + encodedApiKey + "&command=listNetworks";
       urlold = urlold.toLowerCase();
       String signature = signRequest(urlold, s_secretKey);
       String encodedSignature = URLEncoder.encode(signature, "UTF-8");

       //String url = developerServer + "?command=listUsers&apikey="
       String url = developerServer + "?command=listNetworks&apikey="
               + encodedApiKey + "&signature=" + encodedSignature;
       HttpClient client = new HttpClient();
       GetMethod method = new GetMethod(url);
       System.out.println(url);
       int responseCode = client.executeMethod(method);

       // s_logger.info("url is " + url);
       // s_logger.info("list ip addresses for user " + userId +
       // " response code: " + responseCode);
       if (responseCode == 200) {
           InputStream is = method.getResponseBodyAsStream();
           Map<String, String> success = getSingleValueFromXML(is,
                   new String[] { "accountid","id","account","name" });
           System.out.print(success.get("id")+success.get("name")+success.get("account"));
           // s_logger.info("Enable Static NAT..success? " +
           // success.get("success"));
       } else {
           // s_logger.error("Enable Static NAT failed with error code: " +
           // responseCode + ". Following URL was sent: " + url);
           // return responseCode;
       }

   }

返回结果：

http://10.11.1.212:8080/client/api?command=listNetworks&apikey=7hyD4QRRcNkC59ARxCRCO3cFoowcGmBDY5F23qmWwxYdQT22plI6GY7R1EDBWdiRj4-ktSE00HeDlk38EXZszw&signature=NPHxoT08ArbHJSLKBCnCjUA7MOQ%3D
a7ec78ae-0dd6-42f7-8015-cdb2ca14ec66defaultGuestNetworknull

==============================================================

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