在调用百度API实现“将地址解析为对应经纬度”时提示一下异常，求解决方案
java.net.UnknownHostException: api.map.baidu.com
at java.net.AbstractPlainSocketImpl.connect(Unknown Source)
at java.net.PlainSocketImpl.connect(Unknown Source)
at java.net.SocksSocketImpl.connect(Unknown Source)
at java.net.Socket.connect(Unknown Source)
at java.net.Socket.connect(Unknown Source)
at sun.net.NetworkClient.doConnect(Unknown Source)
at sun.net.www.http.HttpClient.openServer(Unknown Source)
at sun.net.www.http.HttpClient.openServer(Unknown Source)
at sun.net.www.http.HttpClient.(Unknown Source)
at sun.net.www.http.HttpClient.New(Unknown Source)
at sun.net.www.http.HttpClient.New(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.plainConnect(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.connect(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
at java.net.URL.openStream(Unknown Source)
at change.LatitudeUtils.getGeocoderLatitude(LatitudeUtils.java:27)
at change.LatitudeUtils.main(LatitudeUtils.java:62)
java.lang.NullPointerException
at change.LatitudeUtils.getGeocoderLatitude(LatitudeUtils.java:52)
at change.LatitudeUtils.main(LatitudeUtils.java:62)
用的什么web。是Nginx吗
UnknownHostException，无法解析域名？
找不到服务，最好把调用过程和参数贴一下。