java利用fw.qq获得IP及地址

1、前端JS获取

 

<script type="text/javascript" src="http://fw.qq.com/ipaddress"></script>
<script type="text/javascript">
	document.write(IPData.join(' '));
</script>

 或者

<script type="text/javascript" src="http://fw.qq.com/ipaddress"></script>
<script type="text/javascript">
	document.write(IPData[0]+','+IPData[1]+','+IPData[2] + ',' + IPData[3]);
</script>

 

但是这里要注意的是编码集不能是UTF-8的，也就是说不能加

 

<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />

 

可以是

<meta http-equiv="Content-Type" content="text/html"; charset="gb2312" />

 页面保存的时候字符集应该与其对应.

 

 

2、java后台

 

public class IP {
	/**
	 * @return String[] 0:ip,1:**,2:省份,3:城市
	 */
	public static String[] getIP() {
		String[] retStrArr = { "IP", "中国", "省份", "城市" };
		try {
			URL url = new URL("http://fw.qq.com/ipaddress");
			InputStream conn = (InputStream) url.openStream();
			ByteArrayOutputStream out = new ByteArrayOutputStream();
			byte[] buff = new byte[4096];
			int len = 0;
			while ((len = conn.read(buff)) > 0) {
				out.write(buff, 0, len);
			}
			// 返回的字符串
			String result = new String(out.toByteArray());
			int beginIndex = result.indexOf("(");
			if (beginIndex >= 0) {
				int endIndex = result.indexOf(")", beginIndex + 1);
				if (endIndex > beginIndex) {
					String[] strArray = result.substring(beginIndex + 1,
							endIndex).split(",");
					for (int i = 0; i < strArray.length; i++) {
						retStrArr[i] = (strArray[i].substring(1, strArray[i]
								.length() - 1));
					}
				}
			}
		} catch (Exception e) {
			e.printStackTrace();
		}
		return retStrArr;
	}
}

 

也是,文件的的字符集也应该是"gb2312"