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我正在使用Google Maps API。当我使用以下URL并在浏览器中输入时,我会弹出一个窗口,将JSON字符串保存为记事本文件。从Google Maps API读取JSON字符串
网址:https://maps.googleapis.com/maps/api/directions/json?origin=Bangalore,印度&目的地=贝尔高姆,印度&传感器=假
...但是当我写了下面这段代码以编程方式做同样的,有以下异常:
例外:
java.io.IOException: Server returned HTTP response code: 400 for URL: https://maps.googleapis.com/maps/api/directions/json?origin=Bangalore, India&destination=Belgaum, India&sensor=false
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
at sun.net.www.protocol.https.HttpsURLConnectionImpl.getInputStream(Unknown Source)
代码:
try {
url = new URL("https://maps.googleapis.com/maps/api/directions/json?origin=Bangalore, India&destination=Belgaum, India&sensor=false");
try {
HttpURLConnection conn = (HttpURLConnection)url.openConnection();
conn.connect();
//InputStream is = conn.getInputStream();
InputSource geocoderResultInputSource = new
InputSource(conn.getInputStream());
// read result and parse into XML Document
try {
geocoderResultDocument =
DocumentBuilderFactory.newInstance()。newDocumentBuilder()。parse(geocoderResultInputSource); catch(SAXException e){ e.printStackTrace(); (ParserConfigurationException e){ e.printStackTrace(); }
有谁知道我在这里做什么错误?
感谢 阿布舍克小号
谢谢埃内斯托。那太完美了!你知道这样的Google API调用是无限的吗?我需要做这样的无限通话。 – 2012-04-02 04:11:46
选中此项:https://developers.google.com/maps/documentation/directions/#Limits – 2012-04-02 04:29:41