我猜我得到了这个错误,因为字符串试图对一个null值进行子串.但这".length() > 0"部分不会消除这个问题吗？
这是Java片段:
if (itemdescription.length() > 0) {
pstmt2.setString(3, itemdescription.substring(0,38));
}
else {
pstmt2.setString(3, "_");
}
我收到了这个错误:
java.lang.StringIndexOutOfBoundsException: String index out of range: 38
at java.lang.String.substring(Unknown Source)
at MASInsert2.itemimport(MASInsert2.java:192)
at MASInsert2.processRequest(MASInsert2.java:125)
at MASInsert2.doGet(MASInsert2.java:219)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:627)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:172)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:108)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:174)
at org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:835)
at org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:640)
at org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1286)
at java.lang.Thread.run(Unknown Source)
我告诉我的程序打印输出的第53行.这个错误告诉我没有那么多行,因此无法打印出来吗？
我有一个有大量下载的应用程序,我收到了很多这个错误:
16783 AndroidRuntime E java.lang.IndexOutOfBoundsException: Invalid index 0, size is 0
16783 AndroidRuntime E at java.util.ArrayList.throwIndexOutOfBoundsException(ArrayList.java:257)
16783 AndroidRuntime E at java.util.ArrayList.get(ArrayList.java:311)
16783 AndroidRuntime E at android.widget.HeaderViewListAdapter.isEnabled(HeaderViewListAdapter.java:16
4)
16783 AndroidRuntime E at android.widget.ListView.dispatchDrawWithExcessScroll_Default(ListView.java:3
288)
16783 AndroidRuntime E at android.widget.ListView.dispatchDraw(ListView.java:3029)
16783 AndroidRuntime E at android.view.View.draw(View.java:6743)
16783 AndroidRuntime E at android.widget.AbsListView.draw(AbsListView.java:2549)
16783 AndroidRuntime E at android.view.ViewGroup.drawChild(ViewGroup.java:1640)
16783 AndroidRuntime E at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1367)
16783 AndroidRuntime E at android.view.View.draw(View.java:6743)
16783 AndroidRuntime E at android.view.ViewGroup.drawChild(ViewGroup.java:1640)
16783 AndroidRuntime E at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1367)
16783 AndroidRuntime E at android.view.ViewGroup.drawChild(ViewGroup.java:1638)
16783 AndroidRuntime …java android listview indexoutofboundsexception commonsware-cwac
我有一个空的数组列表:
var mylist: ArrayList<Int> = ArrayList()
当我想在其中设置值时,我收到此错误:
java.lang.IndexOutOfBoundsException: Invalid index 0, size is 0
问题是:我如何初始化我的清单？
无法跟踪项目中的崩溃，我在 Play 商店预发布部分遇到了这个错误，它在点击 时显示EditText，它得到了错误。但在真实设备上没有发生任何崩溃。
问题：java.lang.IndexOutOfBoundsException：setSpan (4 ... 4) 结束超过长度 0
Fatal Exception: java.lang.IndexOutOfBoundsException: setSpan (4 ... 4) ends beyond length 0
at android.text.SpannableStringBuilder.checkRange(SpannableStringBuilder.java:1096)
at android.text.SpannableStringBuilder.setSpan(SpannableStringBuilder.java:671)
at android.text.SpannableStringBuilder.setSpan(SpannableStringBuilder.java:664)
at android.text.Selection.setSelection(Selection.java:76)
at android.text.Selection.setSelection(Selection.java:87)
at android.widget.EditText.setSelection(EditText.java:98)
at android.widget.EditText.performAccessibilityActionInternal(EditText.java:138)
at android.view.View.performAccessibilityAction(View.java:8892)
at android.view.AccessibilityInteractionController.performAccessibilityActionUiThread(AccessibilityInteractionController.java:668)
at android.view.AccessibilityInteractionController.-wrap6(AccessibilityInteractionController.java)
at android.view.AccessibilityInteractionController$PrivateHandler.handleMessage(AccessibilityInteractionController.java:1194)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5459)
at java.lang.reflect.Method.invoke(Method.java)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:728)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618)
noobie question ..检查NSArray或NSMutableArray的索引是否存在的最佳方法是什么.我到处搜索都没有用!
这是我尝试过的:
if (sections = [arr objectAtIndex:4])
{
/*.....*/
}
要么
sections = [arr objectAtIndex:4]
if (sections == nil)
{
/*.....*/
}
但两者都抛出一个"出界"错误,不允许我继续
(不要用try catch回复因为那不是我的解决方案)
提前致谢
我试图将一个对象添加到ArrayList并抛出ArrayIndexOutOfBoundsException以下是代码
private void populateInboxResultHolder(List inboxErrors){
inboxList = new ArrayList();
try{
inboxHolder = new InboxResultHolder();
//Lots of Code
inboxList.add(inboxHolder);
}catch(Exception e){
e.printStackTrace();
}
}
例外是
[3/7/12 15:41:26:715 UTC] 00000045 SystemErr R java.lang.ArrayIndexOutOfBoundsException
[3/7/12 15:41:26:721 UTC] 00000045 SystemErr R at java.util.ArrayList.add(ArrayList.java:378)
[3/7/12 15:41:26:721 UTC] 00000045 SystemErr R at com.ml.fusion.ui.common.web.bean.inbox.InboxSearchBean.populateInboxResultHolder(InboxSearchBean.java:388)
[3/7/12 15:41:26:721 UTC] 00000045 SystemErr R at com.ml.fusion.ui.common.web.bean.inbox.InboxSearchBean.searchInboxErrors(InboxSearchBean.java:197)
[3/7/12 15:41:26:721 UTC] 00000045 SystemErr R at com.ml.fusion.ui.common.web.bean.inbox.InboxSearchBean.viewInbox(InboxSearchBean.java:207)
但是根据ArrayList.add的签名,它不应该抛出这个异常.请帮忙.
我们运行Java 1.4.
我们有这个方法:
static SimpleDateFormat xmlFormatter = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss");
public static Date fromXml(String xmlDateTime) {
ParsePosition pp = new ParsePosition(0);
return xmlFormatter.parse(xmlDateTime, pp);
}
其中xmlDateTime = 2013-08-22T16:03:00的例子.这一直有效,但突然停止了!
我们现在得到这个例外:
java.lang.ArrayIndexOutOfBoundsException: -1
at java.text.DigitList.fitsIntoLong(DigitList.java:170)
at java.text.DecimalFormat.parse(DecimalFormat.java:1064)
at java.text.SimpleDateFormat.subParse(SimpleDateFormat.java:1381)
at java.text.SimpleDateFormat.parse(SimpleDateFormat.java:1159)
我试图通过使用不同的日期格式在单元测试中重现这一点,即:
2013-08-22T16:03:00
2013-08-22 16:03:00
但没有运气!有任何想法吗？
我正在使用Android Studio中的proguard构建一个Android应用程序,我的项目有一个库jar(na.jar),我想跳过混淆和预验证,因为来自na.jar的一些类在构建过程中给了我错误.所以在我的proguard配置文件中,我有以下选项
-dontpreverify
# com.na, org.json are packages in na.jar, don't obfuscate the code in these packages
-keep class com.na.** { *; }
-keep interface com.na.** { *; }
-keep class org.json.** { *; }
-keep interface org.json.** { *; }
但是,在构建过程中,我仍然遇到与na.jar中的错误类相关的以下错误.
Caused by: java.io.IOException: Can't read [C:\StudioProjects\PBActivity\pBActivity\libs\na.jar(;;;;;;!META-INF/MANIFEST.MF)] (Can't process class [com/na/util/BinConverter.class] (256))
at proguard.InputReader.readInput(InputReader.java:188)
at proguard.InputReader.readInput(InputReader.java:158)
at proguard.InputReader.readInput(InputReader.java:136)
at proguard.InputReader.execute(InputReader.java:66)
at proguard.ProGuard.readInput(ProGuard.java:207)
at proguard.ProGuard.execute(ProGuard.java:81)
at proguard.gradle.ProGuardTask.proguard(ProGuardTask.java:1074)
at com.android.build.gradle.tasks.AndroidProGuardTask.proguard(AndroidProGuardTask.java:87)
at org.gradle.internal.reflect.JavaMethod.invoke(JavaMethod.java:63)
... 62 more
Caused by: java.io.IOException: Can't process class …java android ioexception indexoutofboundsexception android-proguard
确切的错误:
指数超出范围.必须是非负数且小于集合的大小.
我已经无数次索引数组和列表.我用过数组循环和列表无数次.数据在那里,它的工作原理.除非我尝试为我的功能创建任务.请注意,我成功地使用foreach循环执行此类功能; 这个新的需要两个参数,所以我不能正确使用foreach循环.至少我认为我不能.
这是错误的代码:
if (addressList != null) {
textBox1.Text += ("Address List Length: " + addressList.Count + Environment.NewLine);
for (int i = 0; i < addressList.Count; i++) {
textBox1.Text += ("Task for " + addressList[i] + ":" + portList[i] + " initiated." + Environment.NewLine);
Task.Factory.StartNew(() => PingTaskAdapted(addressList[i], portList[i]));
}
}
else textBox1.Text = ("No IPs have been added.");
假设addressList[0]是google.com并且portList[0]是80,输出:
Address List Length: 1
Task for google.com:80 initiated.
然后程序中断,Visual Studio告诉我在PingTaskAdapted()中我正在调用一个超出范围的索引,当它只是打印出有问题的索引时,因为它们存在.
而且要明确的是,如果我称之为PingTaskAdapted(addressList[0], pingList[0]);没有问题.
c# lambda task indexoutofboundsexception indexoutofrangeexception