您好我正在尝试修改学校日程安排应用程序github.com/LiquidPL/Kochanowski以显示从其他网站获取的日程安排。我将MasterlistDownloadRunnable.java中的url修改为“http://gagla.h2g.pl/masterlist”，我将url放入我的日程http://liceumhs-wrze...lan/lista.html。当我运行应用程序并尝试从我的网站同步并下载html计划时，错误会显示在此行中：
shortName = new String (values[1].toCharArray (), 0, values[1].length () - 1);
错误：
java.lang.ArrayIndexOutOfBoundsException: length=1; index=1
at
com.github.LiquidPL.kochanowski.parse.handler.VulcanHandler.characters(VulcanHandler.java:192)
我还应该在代码中修改哪些内容才能从我的网站下载schdule？
这是VulcanHandler.java的代码
public class VulcanHandler
extends DefaultHandler
{
private TimeTableDownloadRunnable runnable;
private int tableType;
private String shortName;
private String longName;
private int currentLesson = -4;// currentLesson and currentDay are set to negative values
private int currentDay = -3; // because of the <tr> and <td> tags at the beginning of
// the HTML file not containing any important data (so the indexing begins from 0)
private String currentName = "";
private String currentAttribute = "";
private int currentGroup = 0; // 0 - current lesson is not grouped; -1 - current lesson is going to be grouped
// 1 - group 1; 2 - group 2
private String currentSubject = "";
private String currentTeacher = "";
private String currentClassroom = "";
private String currentClass = "";
private List<String> startTimes = new ArrayList<> ();
private List<String> endTimes = new ArrayList<> ();
/**
* Class constructor
*
*/
public VulcanHandler (TimeTableDownloadRunnable runnable, int tableType)
{
this.runnable = runnable;
this.tableType = tableType;
}
@Override
public void startElement (String uri, String localName, String qName, Attributes attributes) throws SAXException
{
currentName = qName; // storing the name for use in other methods
if ("tr".equals (qName)) // increasing the lesson number as we traverse the timetable
{
currentLesson++;
currentDay = -3;
}
if ("td".equals (qName) || "th".equals (qName)) currentDay++; // same with the day
if ("span".equals (qName) && currentGroup == -1) // set the appropriate group number when in group mode
{
currentGroup = 1;
}
else if ("span".equals (qName) && currentGroup == 1) // same as above
{
currentGroup = 2;
}
if ("span".equals (qName) || "a".equals (qName)) // if we hit elements that may contain timetable data,
{ // we check if this is the case and store the information
int length = attributes.getLength (); // on what data may it be, so we can check it in
for (int i = 0; i < length; i++) // characters () method
{
String value = attributes.getValue (i);
// p - subject, n - teacher, s - classroom, o - class
// tytulnapis is a special case, it contains title of the timetable
if ("p".equals (value) || "n".equals (value) || "s".equals (value) || "o".equals (value) || "tytulnapis".equals (value))
{
currentAttribute = value;
}
if ("font-size:85%".equals (value)) // entering group mode, there will be two lessons within one hour here
{
currentGroup = -1;
}
}
}
// inserting lesson for the first group, they are separated by a <br/> tag
if ("br".equals (qName) && currentGroup == 1 && currentDay >= 0 && currentDay <= 4 &&
!checkIfEmpty (currentSubject, currentTeacher, currentClassroom, currentClass))
{
DbWriter.insertLesson (
currentDay,
startTimes.get (currentLesson),
endTimes.get (currentLesson),
currentLesson,
currentGroup,
currentSubject,
currentTeacher,
currentClassroom,
shortName);
currentSubject = ""; currentTeacher = ""; currentClassroom = ""; currentClass = "";
}
}
@Override
public void endElement (String uri, String localName, String qName) throws SAXException
{
// inserting lesson for the second group, or if the lesson is not grouped
if ("td".equals (qName) && currentDay >= 0 && currentDay <= 4 &&
!checkIfEmpty (currentSubject, currentTeacher, currentClassroom, currentClass))
{
if (currentGroup == 1 || currentGroup == 2)
{
DbWriter.insertLesson (
currentDay,
startTimes.get (currentLesson),
endTimes.get (currentLesson),
currentLesson,
currentGroup,
currentSubject,
currentTeacher,
currentClassroom,
shortName);
}
else
{
DbWriter.insertLesson (
currentDay,
startTimes.get (currentLesson),
endTimes.get (currentLesson),
currentLesson,
0,
currentSubject,
currentTeacher,
currentClassroom,
shortName);
}
currentGroup = 0;
currentSubject = ""; currentTeacher = ""; currentClassroom = ""; currentClass = "";
}
}
@Override
public void characters (char[] ch, int start, int length) throws SAXException
{
String value = new String (ch, start, length).trim ();
if (value.length () == 0) return;
// next for ifs: storing timetable data for later insertion depending on the attribute
if ("p".equals (currentAttribute))
{
currentSubject = value;
}
if ("n".equals (currentAttribute))
{
currentTeacher = value;
}
if ("s".equals (currentAttribute))
{
currentClassroom = value;
}
if ("o".equals (currentAttribute))
{
currentClass = value;
}
if ("td".equals (currentName) && currentDay == -1) // storing the lessons begin and end hours
{
String[] values = new String (value.toCharArray (), 3, value.length () - 3).split ("-");
// time must comply with the ISO 8601 standard, so we add a leading zero
// to the time string if it's only 4 characters in length (eg. 8:55 goes into 08:55)
if (values[0].length () == 4) values[0] = '0' + values[0];
if (values[1].length () == 4) values[1] = '0' + values[1];
startTimes.add (values[0]);
endTimes.add (values[1]);
}
if ("span".equals (currentName) && "-------".equals (value)) // this means that only group 2 has a lesson at this hour
{
currentGroup = 2;
}
// storing the timetable name, works different for class/teacher and classroom
if ("span".equals (currentName) && "tytulnapis".equals (currentAttribute))
{
String values[] = value.split (" \\(");
longName = values[0];
[b] shortName = new String (values[1].toCharArray (), 0, values[1].length () - 1);[/b]
if (tableType == Type.CLASS)
{
DbWriter.insertClass (shortName, longName);
runnable.setTableName (longName + " (" + shortName + ")");
}
currentAttribute = "";
}
}
/**
* Checks if the entire set of lesson data have been already collected.
* @param name Subject name
* @param code Teacher code
* @param room Classroom
* @param _class Class
* @return
*/
private Boolean checkIfEmpty (String name, String code, String room, String _class)
{
if (name.length () != 0 && code.length () != 0 && room.length () != 0) return false;
else if (_class.length () != 0 && name.length () != 0 && room.length () != 0) return false;
else return !(code.length () != 0 && _class.length () != 0 && name.length () != 0);
}
}
完整错误日志：
06-16 22:35:39.296 32122-32157/com.github.LiquidPL.kochanowski D/OpenGLRenderer﹕ Use EGL_SWAP_BEHAVIOR_PRESERVED: true
06-16 22:35:39.302 32122-32122/com.github.LiquidPL.kochanowski D/Atlas﹕ Validating map...
06-16 22:35:39.349 32122-32157/com.github.LiquidPL.kochanowski I/Adreno-EGL﹕ <qeglDrvAPI_eglInitialize:379>: QUALCOMM Build: 01/14/15, ab0075f, Id3510ff6dc
06-16 22:35:39.350 32122-32157/com.github.LiquidPL.kochanowski I/OpenGLRenderer﹕ Initialized EGL, version 1.4
06-16 22:35:39.371 32122-32157/com.github.LiquidPL.kochanowski D/OpenGLRenderer﹕ Enabling debug mode 0
06-16 22:35:41.078 32122-32157/com.github.LiquidPL.kochanowski D/OpenGLRenderer﹕ endAllStagingAnimators on 0xb4b6aa80 (RippleDrawable) with handle 0xaec2ce40
06-16 22:35:41.600 32122-32180/com.github.LiquidPL.kochanowski I/liquid﹕ http://liceumhs-wrzesnia.pl/plan/plany/o1.html
06-16 22:35:41.600 32122-32180/com.github.LiquidPL.kochanowski I/liquid﹕ http://liceumhs-wrzesnia.pl/plan/plany/o2.html
06-16 22:35:41.600 32122-32180/com.github.LiquidPL.kochanowski I/liquid﹕ http://liceumhs-wrzesnia.pl/plan/plany/o3.html
06-16 22:35:41.600 32122-32180/com.github.LiquidPL.kochanowski I/liquid﹕ http://liceumhs-wrzesnia.pl/plan/plany/o4.html
06-16 22:35:41.600 32122-32180/com.github.LiquidPL.kochanowski I/liquid﹕ http://liceumhs-wrzesnia.pl/plan/plany/o5.html
06-16 22:35:41.600 32122-32180/com.github.LiquidPL.kochanowski I/liquid﹕ http://liceumhs-wrzesnia.pl/plan/plany/o6.html
06-16 22:35:41.601 32122-32180/com.github.LiquidPL.kochanowski I/liquid﹕ http://liceumhs-wrzesnia.pl/plan/plany/o7.html
06-16 22:35:41.601 32122-32180/com.github.LiquidPL.kochanowski I/liquid﹕ http://liceumhs-wrzesnia.pl/plan/plany/o8.html
06-16 22:35:41.601 32122-32180/com.github.LiquidPL.kochanowski I/liquid﹕ http://liceumhs-wrzesnia.pl/plan/plany/o9.html
06-16 22:35:41.601 32122-32180/com.github.LiquidPL.kochanowski I/liquid﹕ http://liceumhs-wrzesnia.pl/plan/plany/o10.html
06-16 22:35:41.601 32122-32180/com.github.LiquidPL.kochanowski I/liquid﹕ http://liceumhs-wrzesnia.pl/plan/plany/o11.html
06-16 22:35:41.601 32122-32180/com.github.LiquidPL.kochanowski I/liquid﹕ http://liceumhs-wrzesnia.pl/plan/plany/o12.html
06-16 22:35:41.601 32122-32180/com.github.LiquidPL.kochanowski I/liquid﹕ http://liceumhs-wrzesnia.pl/plan/plany/o13.html
06-16 22:35:41.601 32122-32180/com.github.LiquidPL.kochanowski I/liquid﹕ http://liceumhs-wrzesnia.pl/plan/plany/o14.html
06-16 22:35:41.601 32122-32180/com.github.LiquidPL.kochanowski I/liquid﹕ http://liceumhs-wrzesnia.pl/plan/plany/o15.html
06-16 22:35:41.602 32122-32180/com.github.LiquidPL.kochanowski I/liquid﹕ http://liceumhs-wrzesnia.pl/plan/plany/o16.html
06-16 22:35:41.602 32122-32180/com.github.LiquidPL.kochanowski I/liquid﹕ http://liceumhs-wrzesnia.pl/plan/plany/o17.html
06-16 22:35:41.945 32122-32122/com.github.LiquidPL.kochanowski I/liquid﹕ http://liceumhs-wrzesnia.pl/plan/plany/o1.html
06-16 22:35:41.945 32122-32122/com.github.LiquidPL.kochanowski I/liquid﹕ http://liceumhs-wrzesnia.pl/plan/plany/o2.html
06-16 22:35:41.946 32122-32122/com.github.LiquidPL.kochanowski I/liquid﹕ http://liceumhs-wrzesnia.pl/plan/plany/o3.html
06-16 22:35:41.947 32122-32122/com.github.LiquidPL.kochanowski I/liquid﹕ http://liceumhs-wrzesnia.pl/plan/plany/o4.html
06-16 22:35:41.947 32122-32122/com.github.LiquidPL.kochanowski I/liquid﹕ http://liceumhs-wrzesnia.pl/plan/plany/o5.html
06-16 22:35:41.947 32122-32122/com.github.LiquidPL.kochanowski I/liquid﹕ http://liceumhs-wrzesnia.pl/plan/plany/o6.html
06-16 22:35:41.947 32122-32122/com.github.LiquidPL.kochanowski I/liquid﹕ http://liceumhs-wrzesnia.pl/plan/plany/o7.html
06-16 22:35:41.947 32122-32122/com.github.LiquidPL.kochanowski I/liquid﹕ http://liceumhs-wrzesnia.pl/plan/plany/o8.html
06-16 22:35:41.947 32122-32122/com.github.LiquidPL.kochanowski I/liquid﹕ http://liceumhs-wrzesnia.pl/plan/plany/o9.html
06-16 22:35:41.947 32122-32122/com.github.LiquidPL.kochanowski I/liquid﹕ http://liceumhs-wrzesnia.pl/plan/plany/o10.html
06-16 22:35:41.947 32122-32122/com.github.LiquidPL.kochanowski I/liquid﹕ http://liceumhs-wrzesnia.pl/plan/plany/o11.html
06-16 22:35:41.947 32122-32122/com.github.LiquidPL.kochanowski I/liquid﹕ http://liceumhs-wrzesnia.pl/plan/plany/o12.html
06-16 22:35:41.947 32122-32122/com.github.LiquidPL.kochanowski I/liquid﹕ http://liceumhs-wrzesnia.pl/plan/plany/o13.html
06-16 22:35:41.947 32122-32122/com.github.LiquidPL.kochanowski I/liquid﹕ http://liceumhs-wrzesnia.pl/plan/plany/o14.html
06-16 22:35:41.947 32122-32122/com.github.LiquidPL.kochanowski I/liquid﹕ http://liceumhs-wrzesnia.pl/plan/plany/o15.html
06-16 22:35:41.947 32122-32122/com.github.LiquidPL.kochanowski I/liquid﹕ http://liceumhs-wrzesnia.pl/plan/plany/o16.html
06-16 22:35:41.947 32122-32122/com.github.LiquidPL.kochanowski I/liquid﹕ http://liceumhs-wrzesnia.pl/plan/plany/o17.html
06-16 22:35:42.335 32122-32189/com.github.LiquidPL.kochanowski I/Process﹕ Sending signal. PID: 32122 SIG: 9
06-16 22:35:53.899 32209-32229/com.github.LiquidPL.kochanowski D/OpenGLRenderer﹕ endAllStagingAnimators on 0xb4b6cc00 (RippleDrawable) with handle 0xaed6c2f0
06-16 22:35:54.045 32209-32296/com.github.LiquidPL.kochanowski I/liquid﹕ http://liceumhs-wrzesnia.pl/plan/plany/o1.html
06-16 22:35:54.045 32209-32296/com.github.LiquidPL.kochanowski I/liquid﹕ http://liceumhs-wrzesnia.pl/plan/plany/o2.html
06-16 22:35:54.045 32209-32296/com.github.LiquidPL.kochanowski I/liquid﹕ http://liceumhs-wrzesnia.pl/plan/plany/o3.html
06-16 22:35:54.045 32209-32296/com.github.LiquidPL.kochanowski I/liquid﹕ http://liceumhs-wrzesnia.pl/plan/plany/o4.html
06-16 22:35:54.045 32209-32296/com.github.LiquidPL.kochanowski I/liquid﹕ http://liceumhs-wrzesnia.pl/plan/plany/o5.html
06-16 22:35:54.046 32209-32296/com.github.LiquidPL.kochanowski I/liquid﹕ http://liceumhs-wrzesnia.pl/plan/plany/o6.html
06-16 22:35:54.046 32209-32296/com.github.LiquidPL.kochanowski I/liquid﹕ http://liceumhs-wrzesnia.pl/plan/plany/o7.html
06-16 22:35:54.046 32209-32296/com.github.LiquidPL.kochanowski I/liquid﹕ http://liceumhs-wrzesnia.pl/plan/plany/o8.html
06-16 22:35:54.049 32209-32296/com.github.LiquidPL.kochanowski I/liquid﹕ http://liceumhs-wrzesnia.pl/plan/plany/o9.html
06-16 22:35:54.049 32209-32296/com.github.LiquidPL.kochanowski I/liquid﹕ http://liceumhs-wrzesnia.pl/plan/plany/o10.html
06-16 22:35:54.049 32209-32296/com.github.LiquidPL.kochanowski I/liquid﹕ http://liceumhs-wrzesnia.pl/plan/plany/o11.html
06-16 22:35:54.049 32209-32296/com.github.LiquidPL.kochanowski I/liquid﹕ http://liceumhs-wrzesnia.pl/plan/plany/o12.html
06-16 22:35:54.049 32209-32296/com.github.LiquidPL.kochanowski I/liquid﹕ http://liceumhs-wrzesnia.pl/plan/plany/o13.html
06-16 22:35:54.050 32209-32296/com.github.LiquidPL.kochanowski I/liquid﹕ http://liceumhs-wrzesnia.pl/plan/plany/o14.html
06-16 22:35:54.050 32209-32296/com.github.LiquidPL.kochanowski I/liquid﹕ http://liceumhs-wrzesnia.pl/plan/plany/o15.html
06-16 22:35:54.050 32209-32296/com.github.LiquidPL.kochanowski I/liquid﹕ http://liceumhs-wrzesnia.pl/plan/plany/o16.html
06-16 22:35:54.050 32209-32296/com.github.LiquidPL.kochanowski I/liquid﹕ http://liceumhs-wrzesnia.pl/plan/plany/o17.html
06-16 22:35:54.400 32209-32209/com.github.LiquidPL.kochanowski I/liquid﹕ http://liceumhs-wrzesnia.pl/plan/plany/o1.html
06-16 22:35:54.402 32209-32209/com.github.LiquidPL.kochanowski I/liquid﹕ http://liceumhs-wrzesnia.pl/plan/plany/o2.html
06-16 22:35:54.402 32209-32209/com.github.LiquidPL.kochanowski I/liquid﹕ http://liceumhs-wrzesnia.pl/plan/plany/o3.html
06-16 22:35:54.402 32209-32209/com.github.LiquidPL.kochanowski I/liquid﹕ http://liceumhs-wrzesnia.pl/plan/plany/o4.html
06-16 22:35:54.403 32209-32209/com.github.LiquidPL.kochanowski I/liquid﹕ http://liceumhs-wrzesnia.pl/plan/plany/o5.html
06-16 22:35:54.403 32209-32209/com.github.LiquidPL.kochanowski I/liquid﹕ http://liceumhs-wrzesnia.pl/plan/plany/o6.html
06-16 22:35:54.403 32209-32209/com.github.LiquidPL.kochanowski I/liquid﹕ http://liceumhs-wrzesnia.pl/plan/plany/o7.html
06-16 22:35:54.403 32209-32209/com.github.LiquidPL.kochanowski I/liquid﹕ http://liceumhs-wrzesnia.pl/plan/plany/o8.html
06-16 22:35:54.403 32209-32209/com.github.LiquidPL.kochanowski I/liquid﹕ http://liceumhs-wrzesnia.pl/plan/plany/o9.html
06-16 22:35:54.403 32209-32209/com.github.LiquidPL.kochanowski I/liquid﹕ http://liceumhs-wrzesnia.pl/plan/plany/o10.html
06-16 22:35:54.403 32209-32209/com.github.LiquidPL.kochanowski I/liquid﹕ http://liceumhs-wrzesnia.pl/plan/plany/o11.html
06-16 22:35:54.403 32209-32209/com.github.LiquidPL.kochanowski I/liquid﹕ http://liceumhs-wrzesnia.pl/plan/plany/o12.html
06-16 22:35:54.403 32209-32209/com.github.LiquidPL.kochanowski I/liquid﹕ http://liceumhs-wrzesnia.pl/plan/plany/o13.html
06-16 22:35:54.403 32209-32209/com.github.LiquidPL.kochanowski I/liquid﹕ http://liceumhs-wrzesnia.pl/plan/plany/o14.html
06-16 22:35:54.404 32209-32209/com.github.LiquidPL.kochanowski I/liquid﹕ http://liceumhs-wrzesnia.pl/plan/plany/o15.html
06-16 22:35:54.404 32209-32209/com.github.LiquidPL.kochanowski I/liquid﹕ http://liceumhs-wrzesnia.pl/plan/plany/o16.html
06-16 22:35:54.404 32209-32209/com.github.LiquidPL.kochanowski I/liquid﹕ http://liceumhs-wrzesnia.pl/plan/plany/o17.html
06-16 22:35:54.827 32209-32303/com.github.LiquidPL.kochanowski E/AndroidRuntime﹕ FATAL EXCEPTION: pool-1-thread-3
Process: com.github.LiquidPL.kochanowski, PID: 32209
java.lang.ArrayIndexOutOfBoundsException: length=1; index=1
at com.github.LiquidPL.kochanowski.parse.handler.VulcanHandler.characters(VulcanHandler.java:192)
at org.apache.harmony.xml.ExpatParser.text(ExpatParser.java:163)
at org.apache.harmony.xml.ExpatParser.appendBytes(Native Method)
at org.apache.harmony.xml.ExpatParser.parseFragment(ExpatParser.java:513)
at org.apache.harmony.xml.ExpatParser.parseDocument(ExpatParser.java:474)
at org.apache.harmony.xml.ExpatReader.parse(ExpatReader.java:316)
at org.apache.harmony.xml.ExpatReader.parse(ExpatReader.java:279)
at javax.xml.parsers.SAXParser.parse(SAXParser.java:390)
at javax.xml.parsers.SAXParser.parse(SAXParser.java:187)
at com.github.LiquidPL.kochanowski.parse.TimeTableDownloadRunnable.run(TimeTableDownloadRunnable.java:87)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
at java.lang.Thread.run(Thread.java:818)
答案 0 :(得分：0)
在您想要输入特殊索引之前，您应该检查您的阵列是否足够大：
if(values.length >=2) {
shortName = new String (values[1].toCharArray (), 0, values[1].length () - 1);
} else {
//Your array is to short to make this operation
}
您可以确定，如果shortName足够大，您只需初始化values。