我无法阅读文件使用saxParser

问题描述：

我是新来的Android和我有一个SAXParser问题我有一个XML文件，我想将此文件传递给ArrayList，但我无法读取文件.. 。我无法阅读文件使用saxParser

这是我的代码

public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.index); 

     FileParserSax saxParcer = new FileParserSax(getFilesDir().getAbsoluteFile() + "/datos.xml"); 
     ArrayList<Meansurement> procesos = saxParcer.parse(); 
     System.out.println("aqui"); 
    }

我的函数解析器这个..

public ArrayList<Meansurement> parse(){ 

    SAXParserFactory factory= SAXParserFactory.newInstance(); 
    try{ 
    SAXParser parser= factory.newSAXParser(); 
    SaxMeansurementHandler handler = new SaxMeansurementHandler(); 
    parser.parse(new File(ruta), handler); 
    return handler.getMeansurements(); 
    }catch (Exception e) { 
     throw new RuntimeException(e); 
    } 
}

但是当我到达这条线parser.parse（新文件（鲁塔），处理程序）;失败！

这是错误

04-23 00:18:13.308: ERROR/AndroidRuntime(2533): Uncaught handler: thread main exiting due to uncaught exception 
04-23 00:18:13.559: ERROR/AndroidRuntime(2533): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.cronox/com.cronox.Index}: java.lang.RuntimeException: java.io.IOException: Couldn't open /data/data/com.cronox/files/datos.xml 
04-23 00:18:13.559: ERROR/AndroidRuntime(2533):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2401) 
04-23 00:18:13.559: ERROR/AndroidRuntime(2533):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2417) 
04-23 00:18:13.559: ERROR/AndroidRuntime(2533):  at android.app.ActivityThread.access$2100(ActivityThread.java:116) 
04-23 00:18:13.559: ERROR/AndroidRuntime(2533):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1794) 
04-23 00:18:13.559: ERROR/AndroidRuntime(2533):  at android.os.Handler.dispatchMessage(Handler.java:99) 
04-23 00:18:13.559: ERROR/AndroidRuntime(2533):  at android.os.Looper.loop(Looper.java:123) 
04-23 00:18:13.559: ERROR/AndroidRuntime(2533):  at android.app.ActivityThread.main(ActivityThread.java:4203) 
04-23 00:18:13.559: ERROR/AndroidRuntime(2533):  at java.lang.reflect.Method.invokeNative(Native Method) 
04-23 00:18:13.559: ERROR/AndroidRuntime(2533):  at java.lang.reflect.Method.invoke(Method.java:521) 
04-23 00:18:13.559: ERROR/AndroidRuntime(2533):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:791) 
04-23 00:18:13.559: ERROR/AndroidRuntime(2533):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:549) 
04-23 00:18:13.559: ERROR/AndroidRuntime(2533):  at dalvik.system.NativeStart.main(Native Method) 
04-23 00:18:13.559: ERROR/AndroidRuntime(2533): Caused by: java.lang.RuntimeException: java.io.IOException: Couldn't open /data/data/com.cronox/files/datos.xml 
04-23 00:18:13.559: ERROR/AndroidRuntime(2533):  at com.cronox.FileParserSax.parse(FileParserSax.java:25) 
04-23 00:18:13.559: ERROR/AndroidRuntime(2533):  at com.cronox.Index.onCreate(Index.java:35) 
04-23 00:18:13.559: ERROR/AndroidRuntime(2533):  at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1123) 
04-23 00:18:13.559: ERROR/AndroidRuntime(2533):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2364) 
04-23 00:18:13.559: ERROR/AndroidRuntime(2533):  ... 11 more 
04-23 00:18:13.559: ERROR/AndroidRuntime(2533): Caused by: java.io.IOException: Couldn't open /data/data/com.cronox/files/datos.xml 
04-23 00:18:13.559: ERROR/AndroidRuntime(2533):  at org.apache.harmony.xml.ExpatParser.openUrl(ExpatParser.java:744) 
04-23 00:18:13.559: ERROR/AndroidRuntime(2533):  at org.apache.harmony.xml.ExpatReader.parse(ExpatReader.java:300) 
04-23 00:18:13.559: ERROR/AndroidRuntime(2533):  at javax.xml.parsers.SAXParser.parse(SAXParser.java:361) 
04-23 00:18:13.559: ERROR/AndroidRuntime(2533):  at javax.xml.parsers.SAXParser.parse(SAXParser.java:303) 
04-23 00:18:13.559: ERROR/AndroidRuntime(2533):  at com.cronox.FileParserSax.parse(FileParserSax.java:22) 
04-23 00:18:13.559: ERROR/AndroidRuntime(2533):  ... 14 more 
04-23 00:18:13.559: ERROR/AndroidRuntime(2533): Caused by: java.net.MalformedURLException: Protocol not found: /data/data/com.cronox/files/datos.xml 
04-23 00:18:13.559: ERROR/AndroidRuntime(2533):  at java.net.URL.<init>(URL.java:285) 
04-23 00:18:13.559: ERROR/AndroidRuntime(2533):  at java.net.URL.<init>(URL.java:164) 
04-23 00:18:13.559: ERROR/AndroidRuntime(2533):  at org.apache.harmony.xml.ExpatParser.openUrl(ExpatParser.java:737) 
04-23 00:18:13.559: ERROR/AndroidRuntime(2533):  ... 18 more

你确定文件'/ data/data/com.cronox/files/datos.xml'是否存在？ – MByD 2011-04-23 04:31:28

答

使用file：///data/data/com.cronox/files/datos.xml。像：

FileParserSax saxParcer = new FileParserSax("file://" + getFilesDir().getAbsoluteFile() + "/datos.xml");

嗯，我认为你应该使用InputStream而不是String构造函数。

我无法阅读文件使用saxParser

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