Java中的Get和Post请求，使用万网接口判断域名是否已被注册

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<?xml version=”1.0″ encoding=”gb2312″?>

<property>

<returncode>200</returncode>

<key>aliyun.com</key>

<original>211 : Domain exists</original>

</property>

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<?xml version=”1.0″ encoding=”gb2312″?>

<property>

<returncode>200</returncode>

<key>aliyunbaidu.com</key>

<original>210 : Domain name is available</original>

</property>

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/**

     * 判断一个域名是否已被注册，用的万网的接口

     * 这里采用的单线程，因为是免费的接口，所以线程过大容易被封IP

     * @param domain 待检测域名，如：baidu.com

     * @return 是否可以注册

     * */

    public boolean domainIsAvailable(String domain){

        boolean isAvailable = false;  //该域名是否可用

        try {

            URL url = new URL(“http://panda.www.net.cn/cgi-bin/check.cgi?area_domain=” + domain);

            HttpURLConnection connection = (HttpURLConnection) url.openConnection();

            connection.setRequestMethod(“GET”);

            connection.setConnectTimeout(10000);  //毫秒

            connection.setReadTimeout(5000);

            InputStream inputStream = new BufferedInputStream(connection.getInputStream());

            BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream));

            String line = “”;  //每次读取一行数据

            String reg = “<original>(.*?)</original>”;  //正则

            while((line = reader.readLine()) != null){

                if(line.matches(reg)){

//                    System.out.println(line);

                    //只有两种状态，210表示可用，211表示不可用

                    String state = line.substring(10, 13);

                    if(“210”.equals(state))

                        isAvailable = true;                    

                }

            }

        }  catch (IOException e) {

            e.printStackTrace();

        }        

        return isAvailable;

    }

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        String domain = “aliyunbaidu.com”;

        Test test = new Test();

        boolean check = test.domainIsAvailable(domain);

        System.out.println(domain + ” 是否可用：” + check);

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/**

     * POST请求测试

     * */

    public void POSTTest(){

        try {

            URL url = new URL(“http://localhost:8080/Demo/jsp/show_get”);

            HttpURLConnection connection = (HttpURLConnection) url.openConnection();

            connection.setRequestMethod(“POST”);

            connection.setRequestProperty(“Content-Type”, “application/x-www-form-urlencoded”);

            connection.setDoOutput(true);  //这里因为post请求有数据传输，一定要是true

            connection.setDoInput(true);

            connection.setUseCaches(false);

            String str = “str=aaavc”;

            OutputStream outputStream = connection.getOutputStream();

            outputStream.write(str.getBytes(“UTF-8”));

            outputStream.flush();

            outputStream.close();

            System.out.println(connection.getResponseCode());

            if(connection.getResponseCode() == 200){

                InputStream inputStream = connection.getInputStream();

                BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream));

                StringBuffer stringBuffer = new StringBuffer();

                String line = “”;

                while((line = reader.readLine()) != null){

                    stringBuffer.append(line + “\n”);

                }

                System.out.println(stringBuffer.toString());

            }

        } catch (MalformedURLException e) {

            e.printStackTrace();

        } catch (IOException e) {

            e.printStackTrace();

        }

    }