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我正在使用Google Maps API。當我使用以下URL並在瀏覽器中輸入時,我會彈出一個窗口,將JSON字符串保存爲記事本文件。從Google Maps API讀取JSON字符串
網址:https://maps.googleapis.com/maps/api/directions/json?origin=Bangalore,印度&目的地=貝爾高姆,印度&傳感器=假
...但是當我寫了下面這段代碼以編程方式做同樣的,有以下異常:
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)
代碼:
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(); }
有誰知道我在這裏做什麼錯誤?
感謝 阿布舍克小號
謝謝埃內斯托。那太完美了!你知道這樣的Google API調用是無限的嗎?我需要做這樣的無限通話。 – 2012-04-02 04:11:46
選中此項:https://developers.google.com/maps/documentation/directions/#Limits – 2012-04-02 04:29:41