Java REST呼叫：连接超时

我有一个休息URL说-

当我从浏览器调用时，我在浏览器中得到一个JSON响应。但当我从Java调用（使用

HttpURLConnection

）调用它时，它抛出一个异常“连接超时”

两个请求之间的区别是什么

代码如下：

private static final String targetURL =
        "http://testing.com/account/v1/person/21324";
URL restServiceURL = new URL(targetURL);

HttpURLConnection httpConnection =
        (HttpURLConnection) restServiceURL.openConnection();
httpConnection.setRequestMethod("GET");
httpConnection.setRequestProperty("Accept", "application/json");

if (httpConnection.getResponseCode() != 200) {
    throw new RuntimeException("HTTP GET Request Failed with Error code : "
            + httpConnection.getResponseCode());
}

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猜猜看，您在HttpURLConnection请求中使用了正确的端口吗？我在问题中添加了代码