我正在尝试通过URL API解析android中的XML文件。
尽管我不断收到以下错误:
I/System.out: (HTTPLog)-Static: isSBSettingEnabled false
(HTTPLog)-Static: isSBSettingEnabled false
W/System.err: java.io.FileNotFoundException:
W/System.err: at com.android.okhttp.internal.huc.HttpURLConnectionImpl.getInputStream(HttpURLConnectionImpl.java:251)
at com.android.okhttp.internal.huc.DelegatingHttpsURLConnection.getInputStream(DelegatingHttpsURLConnection.java:210)
at com.android.okhttp.internal.huc.HttpsURLConnectionImpl.getInputStream(HttpsURLConnectionImpl.java:26)
at com.example.finalyearapp.Carbonfootprint.HandleXml$1.run(HandleXml.java:102)
at java.lang.Thread.run(Thread.java:764)
我相信找不到文件,因为当前我没有正确添加标题,所以我以这种方式调用链接:
我的Stringurl:
String url = "https://apis.berkeley.edu/coolclimate/footprint input_size=" + population +
"&input_footprint_transportation_fuel1=1"+
"&input_footprint_transportation_miles1="+miles+
"&input_footprint_transportation_mpg1="+ mpg +
"&input_footprint_transportation_bus="+ bushours +
"&input_footprint_transportation_commuter=" + trainhours +
"&input_footprint_shopping_goods_default_furnitureappliances=" + household +
"&input_footprint_shopping_goods_default_clothing=" + clothes +
"&input_footprint_shopping_goods_default_other_personalcare=" + beauty +
"&input_footprint_shopping_goods_default_other_entertainment=" + entertainment +
"&input_footprint_housing_electricity_dollars="+yearlyvalue+
"&input_footprint_housing_naturalgas_dollars="+ yearlyvalue +
" -H \"accept: application/json\" -H \"app_id: #\" -H \"app_key: #";
您可以看到URL的末尾有标题。
我怎么称呼它:
public void fetchXML(){
Thread thread = new Thread(new Runnable() {
@Override
public void run() {
try {
URL url = new URL(urlstring);
HttpURLConnection connect = (HttpURLConnection) url.openConnection();
connect.setReadTimeout(100000);
connect.setConnectTimeout(150000);
connect.setRequestMethod("GET");
connect.setDoInput(true);
connect.connect();
InputStream stream = connect.getInputStream();
xmlFactoryObject = XmlPullParserFactory.newInstance();
XmlPullParser myparser = xmlFactoryObject.newPullParser();
myparser.setFeature(XmlPullParser.FEATURE_PROCESS_NAMESPACES, false);
myparser.setInput(stream, null);
parseXMLAndStoreIt(myparser);
stream.close();
}catch (Exception e){
e.printStackTrace();
}
}
});
您通过在HttpURLConnection上调用setRequestProperty添加标题。
connect.setRequestProperty("Content-Type", "application/json");
在尝试解析答复之前,您可能应该检查响应代码并继续使用http 200。
[在此处提出问题时,您也应注意不要共享私有数据,如API密钥。