苦苦在網上找了一天，先後試了四種方法，最終實現，在此做一總結

方法一：

HttpClient 方法   
    HttpClient client=new HttpClient();
    client.getHostConfiguration().setHost("111432.1.32.93", 80, "http");   
    HttpMethod method =new GetMethod("http://www.07073.com/gld/");
   int statusCode = client.executeMethod(method);   
   System.out.println("---------"+statusCode+"------------");

方法二：

JAVA設定JVM代理方法
    System.getProperty("proxySet", "true");
         System.getProperties().setProperty("http.proxyHost", "1532603.11.62.176");
         System.getProperties().setProperty("http.proxyPort", "810");
         System.out.println(getHtml("http://www.07073.com/gld/")); 
         

private String getHtml(String address){
   StringBuffer html = new StringBuffer();
   String result = null;
  
   URL url;
   try {
    url = new URL(address);
    URLConnection conn = url.openConnection();

    conn.setRequestProperty("User-Agent","Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; GTB5; .NET CLR 2.0.50727; CIBA)");

    BufferedInputStream in = new BufferedInputStream(conn.getInputStream());
   
    try {
      String inputLine; 
      byte[] buf = new byte[4096]; 
      int bytesRead = 0; 
      while (bytesRead >= 0) { 
      inputLine = new String(buf, 0, bytesRead, "ISO-8859-1"); 
      html.append(inputLine); 
      bytesRead = in.read(buf); 
      inputLine = null;
     }
      buf = null;
     } finally {
      in.close();
      conn = null;
      url = null;
     }
     result = new String(html.toString().trim().getBytes("ISO-8859-1"), "gb2312").toLowerCase();

   } catch (Exception e) {
    e.printStackTrace();
    return null;
   }
   html=null;
   return result;
}

方法三：

JAVA PING網址方法
    Process p = Runtime.getRuntime().exec("ping "+ip);
    InputStream is = p.getInputStream();   
    BufferedReader reader = new BufferedReader(new InputStreamReader(is));   
    String line;   
    String time=null;
    String temp=null;
      while ((line = reader.readLine()) != null) {   
        temp+=line;
        //判斷是否丟包
        if(line.indexOf("out")>0){
         flag=false;
         break;
        }
        //取得延時
        if(line.indexOf("time")>0&&line.indexOf("ms")>0){
         time=line.substring(line.indexOf("time")+5,line.indexOf("ms"));
         System.out.println(line.substring(line.indexOf("time")+5,line.indexOf("ms")));
      //如果延時小於5秒
         if(Integer.valueOf(time)<5000)
        flag=true;
        else
        flag=false;
         break;
        }
      }   
      System.out.println(temp);
      is.close();   
      reader.close();   
      p.destroy();   
         System.out.println(getHtml("http://www.07073.com/gld/"));
         method.eleaseConnection();

方法四：

    //Proxy類代理方法
         URL url = new URL("http://www.baidu.com");
        // 建立代理伺服器
        InetSocketAddress addr=null;
        addr=new InetSocketAddress("61.135.149.177",8888);
        Proxy proxy = new Proxy(Proxy.Type.HTTP, addr); // http 代理
        URLConnection conn = url.openConnection(proxy);
           InputStream in = conn.getInputStream();
           String s = IOUtils.toString(in);
           //System.out.println(s);
           if(s.indexOf("百度")>0){
            System.out.println("ok");
           }

前二種方法都會因代理不好用，而程式自動採用本機IP訪問頁面，所以也驗證不出代理是否可用，而第三種方法也只能測試代理的速度，也沒有實際效用，第四種方法對於設定代理後無法訪問頁面，得不到頁面流時會報錯，可採用