Xml解析器意外标记错误位置：java.io.stringreader中的TEXT @ 1：2 [英] Xml parser unexpected token error position:TEXT @1:2 in java.io.stringreader
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问题描述
问题是当我从原始链接解析XML时（我不会因为安全目的而发布原始链接），例如http://example.com/ss.svc/APIabc?A=10&Key = XXXXX& From = 19& To = 221& Date = 19-Apr-2016然后listview没有填充，logcat说错误这个
LogCat错误 -
The problem is when I parse the XML from the original link for example (i am not posting the original link due to securit purpose) like http://example.com/ss.svc/APIabc?A=10&Key=XXXXX&From=19&To=221&Date=19-Apr-2016 then listview is not populated and the the logcat says error this
LogCat error-
Unexpected token (position:TEXT @1:2 in java.io.StringReader@4255df00)
Shutting down VM
threadid=1: thread exiting with uncaught exception (group=0x41b19438)
FATAL EXCEPTION: main
<pre lang="java"> java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.androidhive/com.example.androidhive.CustomizedListView}: java.lang.NullPointerException
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2114)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2139)
at android.app.ActivityThread.access$700(ActivityThread.java:143)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1241)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:4960)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1038)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:805)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.NullPointerException
at com.example.androidhive.CustomizedListView.onCreate(CustomizedListView.java:48)
at android.app.Activity.performCreate(Activity.java:5203)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1094)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2078)
... 11 more
但是当相同的XML被放到另一个服务器链接然后链接以.php结尾时，例如这个http：//www.example .in / exapmle / sub.php然后它将解析后的数据显示到listview
说我的XML格式是这样的
but when the same XML is put to another server link then with the link ending with .php for example this http://www.example.in/exapmle/sub.php then its showing the parsed data to listview
Say my XML Format is like this
<APIabc
xmlns="http://exapmle.org/">
<APIabcd
xmlns:a="http://ac.ssc.org/2014/21/abfaggkk"
xmlns:i="http://www.w3.org/2001/XMLSchema-instance">
<Route>
<Time>2016-04-13 06:11:00 AM</Time>
<Avail>xyz</Avail>
<thumb_url>http://api.androidhive.info/music/images/adele.png</thumb_url>
<BusLabel/>
</Route>
</APIabcd>
</APIabc>
as logcat s ays error com.example.androidhive.CustomizedListView.onCreate（CustomizedListView.java:48）所以代码中的第48行
As logcat says error com.example.androidhive.CustomizedListView.onCreate(CustomizedListView.java:48) so the line 48 in code
NodeList nl = doc.getElementsByTagName(KEY_SONG);
我尝试过：
CustomizedListView.java
What I have tried:
CustomizedListView.java
public class CustomizedListView extends Activity {
// All static variables
static final String URL = "http://example.com/ss.svc/APIabc?A=10&Key=XXXXX&From=19&To=221&Date=19-Apr-2016";
// XML node keys
static final String KEY_SONG = "Route"; // parent node
static final String KEY_ID = "Avail";
static final String KEY_TITLE = "Avail";
static final String KEY_ARTIST = "Avail";
static final String KEY_ARTIST2 = "Avail";
static final String KEY_DURATION = "Avail";
static final String KEY_THUMB_URL = "thumb_url";
ListView list;
LazyAdapter adapter;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
ArrayList<HashMap<String, String>> songsList = new ArrayList<HashMap<String, String>>();
XMLParser parser = new XMLParser();
String xml = parser.getXmlFromUrl(URL); // getting XML from URL
Document doc = parser.getDomElement(xml); // getting DOM element
NodeList nl = doc.getElementsByTagName(KEY_SONG);
// looping through all song nodes <song>
for (int i = 0; i < nl.getLength(); i++) {
// creating new HashMap
HashMap<String, String> map = new HashMap<String, String>();
Element e = (Element) nl.item(i);
// adding each child node to HashMap key => value
map.put(KEY_ID, parser.getValue(e, KEY_ID));
map.put(KEY_TITLE, parser.getValue(e, KEY_TITLE));
map.put(KEY_ARTIST, parser.getValue(e, KEY_ARTIST));
map.put(KEY_DURATION, parser.getValue(e, KEY_DURATION));
map.put(KEY_THUMB_URL, parser.getValue(e, KEY_THUMB_URL));
// adding HashList to ArrayList
songsList.add(map);
}
list=(ListView)findViewById(R.id.list);
// Getting adapter by passing xml data ArrayList
adapter=new LazyAdapter(this, songsList);
list.setAdapter(adapter);
// Click event for single list row
list.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
}
});
}
}
推荐答案
700（ActivityThread.java:143）
在android.app .ActivityThread
700(ActivityThread.java:143) at android.app.ActivityThread
H.handleMessage（ActivityThread.java:1241）
在android.os.Handler.dispatchMessage（Handler.java:99）
在android.os .Looper.loop（Looper.java:137）
在android.app.ActivityThread.main（ActivityThread.java:4960）
at java.lang.reflect.Method.invokeNative（Native Method）
at java.lang.reflect.Method.invoke（Method.java:511）
at com.android.internal.os.ZygoteInit
H.handleMessage(ActivityThread.java:1241) at android.os.Handler.dispatchMessage(Handler.java:99) at android.os.Looper.loop(Looper.java:137) at android.app.ActivityThread.main(ActivityThread.java:4960) at java.lang.reflect.Method.invokeNative(Native Method) at java.lang.reflect.Method.invoke(Method.java:511) at com.android.internal.os.ZygoteInit
MethodAndArgsCaller.run（ZygoteInit。 java：1038）
at com.android.internal.os.ZygoteInit.main（ZygoteInit.java:805)
at dalvik.system.NativeStart.main（Native Method）
引起： java.lang.NullPointerException
at com.example.androidhive.CustomizedListView.onCreate（CustomizedListView.java:48）
at android.app.Activity.performCreate（Activity.java:5203)
at android.app.Instrumentation.c allActivityOnCreate（Instrumentation.java:1094）
在android.app.ActivityThread.performLaunchActivity（ActivityThread.java:2078）
... 11更多
MethodAndArgsCaller.run(ZygoteInit.java:1038) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:805) at dalvik.system.NativeStart.main(Native Method) Caused by: java.lang.NullPointerException at com.example.androidhive.CustomizedListView.onCreate(CustomizedListView.java:48) at android.app.Activity.performCreate(Activity.java:5203) at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1094) at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2078) ... 11 more
但是当相同的XML被放到另一个服务器链接然后链接以.php结尾时，例如这个http://www.example.in/exapmle/sub.php然后它将解析后的数据显示到listview
说我的XML格式是这样的
but when the same XML is put to another server link then with the link ending with .php for example this http://www.example.in/exapmle/sub.php then its showing the parsed data to listview
Say my XML Format is like this
<APIabc
xmlns="http://exapmle.org/">
<APIabcd
xmlns:a="http://ac.ssc.org/2014/21/abfaggkk"
xmlns:i="http://www.w3.org/2001/XMLSchema-instance">
<Route>
<Time>2016-04-13 06:11:00 AM</Time>
<Avail>xyz</Avail>
<thumb_url>http://api.androidhive.info/music/images/adele.png</thumb_url>
<BusLabel/>
</Route>
</APIabcd>
</APIabc>
因为logcat说错误com.example.androidhive.CustomizedListView.onCreate（CustomizedListView.java:48）所以代码中的第48行
As logcat says error com.example.androidhive.CustomizedListView.onCreate(CustomizedListView.java:48) so the line 48 in code
NodeList nl = doc.getElementsByTagName(KEY_SONG);
我的尝试：
CustomizedListView.java
What I have tried:
CustomizedListView.java
public class CustomizedListView extends Activity {
// All static variables
static final String URL = "http://example.com/ss.svc/APIabc?A=10&Key=XXXXX&From=19&To=221&Date=19-Apr-2016";
// XML node keys
static final String KEY_SONG = "Route"; // parent node
static final String KEY_ID = "Avail";
static final String KEY_TITLE = "Avail";
static final String KEY_ARTIST = "Avail";
static final String KEY_ARTIST2 = "Avail";
static final String KEY_DURATION = "Avail";
static final String KEY_THUMB_URL = "thumb_url";
ListView list;
LazyAdapter adapter;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
ArrayList<HashMap<String, String>> songsList = new ArrayList<HashMap<String, String>>();
XMLParser parser = new XMLParser();
String xml = parser.getXmlFromUrl(URL); // getting XML from URL
Document doc = parser.getDomElement(xml); // getting DOM element
NodeList nl = doc.getElementsByTagName(KEY_SONG);
// looping through all song nodes <song>
for (int i = 0; i < nl.getLength(); i++) {
// creating new HashMap
HashMap<String, String> map = new HashMap<String, String>();
Element e = (Element) nl.item(i);
// adding each child node to HashMap key => value
map.put(KEY_ID, parser.getValue(e, KEY_ID));
map.put(KEY_TITLE, parser.getValue(e, KEY_TITLE));
map.put(KEY_ARTIST, parser.getValue(e, KEY_ARTIST));
map.put(KEY_DURATION, parser.getValue(e, KEY_DURATION));
map.put(KEY_THUMB_URL, parser.getValue(e, KEY_THUMB_URL));
// adding HashList to ArrayList
songsList.add(map);
}
list=(ListView)findViewById(R.id.list);
// Getting adapter by passing xml data ArrayList
adapter=new LazyAdapter(this, songsList);
list.setAdapter(adapter);
// Click event for single list row
list.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
}
});
}
}
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