java读取 其他服务接口 返回的json数据

现在开发大部分都是服务化或者微服务，数据交换都是跨服务的，这里记录java调取其他接口的方法，java代码如下：

/**
*
*<p>类描述：接口读取工具。</p>
*/
public class ReadUrlUtil {

public static JSONObject readJsonFromUrl(String url) throws IOException, JSONException {
InputStream is = new URL(url).openStream();
try {
BufferedReader rd = new BufferedReader(new InputStreamReader(is, Charset.forName("UTF-8")));
StringBuilder sb = new StringBuilder();
int cp;
while ((cp = rd.read()) != -1) {
sb.append((char) cp);
}
String jsonText = sb.toString();
JSONObject json = JSONObject.fromObject(jsonText);
return json;
} finally {
is.close();
}
}
}
测试代码如下：

public static void main(String[] args) throws IOException, JSONException {
// 这里调用百度的ip定位api服务 详见 http://api.map.baidu.com/lbsapi/cloud/ip-location-api.htm String ip = "113.57.244.100";
String url = "http://api.map.baidu.com/location/ip?ak=32f38c9491f2da9eb61106aaab1e9739&ip="+ip+"&coor=bd09ll";
JSONObject json = ReadUrlUtil.readJsonFromUrl(url);
System.out.println(json.toString());
System.out.println("经度："+((JSONObject) json.get("content")).getJSONObject("point").get("x"));
System.out.println("维度："+((JSONObject) json.get("content")).getJSONObject("point").get("y"));
String city =(String) ((JSONObject) json.get("content")).getJSONObject("address_detail").get("city");
city = city.replace("市","");

System.out.println(city);

}

测试结果如下图：