Outline View 을 볼때 아이콘이 자꾸 헷걸려서… 참고 : http://help.eclipse.org/helios/index.jsp?topic=/org.eclipse.jdt.doc.user/reference/ref-icons.htm JDT Icons Object adornments compilation unit (*.java file) Java file which is not on a build path class file generic file (unknown content type) unknown object Java scrapbook page … Continue reading
Notice : 해당 자료가 저작권등에 의해서 문제가 있다면 바로 삭제하겠습니다. 연구목적으로 사용하지 않고 악의적인 목적으로 이용할 경우 발생할 수 있는 법적은 책임은 모두 본인에게 있습니다. 쓰레드 덤프보는 JSP (threaddump.jsp) 완전 멋지다!ㅋ
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <%-- This source is under a creative common license. (Attribution Non-Commercial) You can use it for non-commercial purposes only. Author: Dongyoul Kim Blog: http://greatkim91.tistory.com Twitter: greatkim91 --%> <%@ page contentType="text/html; charset=UTF-8" %> <%@ page import="java.util.List"%> <%@ page import="java.util.ArrayList"%> <%@ page import="java.util.Collections"%> <%@ page import="java.util.Comparator"%> <%@ page import="java.lang.management.ManagementFactory"%> <%@ page import="java.lang.management.MemoryMXBean"%> <%@ page import="java.lang.management.MemoryUsage"%> <%@ page import="java.text.DecimalFormat"%> <%@ page import="java.text.NumberFormat"%> <%@ page import="java.lang.management.ThreadInfo"%> <%@ page import="java.lang.management.ThreadMXBean"%> <%! private static String kbytes(long l) { NumberFormat nf = new DecimalFormat("#,###"); return nf.format(l/1000); } private static String percent(double l) { NumberFormat nf = new DecimalFormat("#.#"); return nf.format(l); } private static List<ThreadInfo> loadThreadInfo() { ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean(); ThreadInfo[] threadInfoArray = threadMXBean.getThreadInfo(threadMXBean.getAllThreadIds(), Integer.MAX_VALUE); List<ThreadInfo> threadInfos = new ArrayList<ThreadInfo>(threadInfoArray.length); for (ThreadInfo threadInfo : threadInfoArray) { threadInfos.add(threadInfo); } Collections.sort( threadInfos, new Comparator() { public int compare(Object o1, Object o2) { if (o1 == null || o2 == null) return 0; ThreadInfo t1 = (ThreadInfo) o1; ThreadInfo t2 = (ThreadInfo) o2; return t1.getThreadName().compareTo(t2.getThreadName()); } } ); return threadInfos; } %> <html> <head> <title>Thread dump</title> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <meta http-equiv="cache-control" content="no-cache" /> <meta http-equiv="Pragma" content="no-cache" /> <style type="text/css"> <!-- body { font: 12px sans-serif; } table { border: 0px solid #DEDEDE; } td, th { border: 1px solid #DEDEDE; padding: 1px 10px; } .right { text-align: right; } --> </style> </head> <body> <% String uri = request.getRequestURI(); String namePrefix = request.getParameter("name"); String stateParam = request.getParameter("state"); long threadId; try { threadId = Long.parseLong(request.getParameter("tid")); } catch(Exception e) { threadId = -1; } // Memory Info MemoryMXBean memoryMXBean = ManagementFactory.getMemoryMXBean(); MemoryUsage heapMemoryUsage = memoryMXBean.getHeapMemoryUsage(); MemoryUsage nonHeapMemoryUsage = memoryMXBean.getNonHeapMemoryUsage(); double heapUsedPercent = ((double)heapMemoryUsage.getUsed()/(double)heapMemoryUsage.getMax()) * 100.0D; double nonHeapUsedPercent = ((double)nonHeapMemoryUsage.getUsed()/(double)nonHeapMemoryUsage.getMax()) * 100.0D; %> <table> <tr> <th>Area</th> <th>Init (KB)</th> <th>Max (KB)</th> <th>Used (KB)</th> <th>Used(%)</th> </tr> <tr> <td>Heap</td> <td class="right"><%=kbytes(heapMemoryUsage.getInit())%></td> <td class="right"><%=kbytes(heapMemoryUsage.getMax())%></td> <td class="right"><%=kbytes(heapMemoryUsage.getUsed())%></td> <td class="right"><%=percent(heapUsedPercent)%></td> </tr> <tr> <td>Non Heap</td> <td class="right"><%=kbytes(nonHeapMemoryUsage.getInit())%></td> <td class="right"><%=kbytes(nonHeapMemoryUsage.getMax())%></td> <td class="right"><%=kbytes(nonHeapMemoryUsage.getUsed())%></td> <td class="right"><%=percent(nonHeapUsedPercent)%></td> </tr> </table> <hr/> <form method="get"> Show only what thread name starts with <input type="text" name="name" value="<%=(namePrefix != null ? namePrefix : "")%>"/> and thread state is <select name="state"> <option value="all">All</option> <% for(Thread.State threadState: Thread.State.values()) { boolean selected = threadState.toString().equals(stateParam); %> <option value="<%=threadState%>"<%=selected ? " selected=\"true\"" : ""%>><%=threadState%></option> <% } %> </select> <input type="submit" value="go!"/> </form> <% if(threadId != -1 || (namePrefix != null && namePrefix.trim().length() > 0)) { %> <a href="<%=uri%>">Show all threads</a> <% } %> <% // Thread info for(ThreadInfo threadInfo : loadThreadInfo()) { StackTraceElement[] stackTraces = threadInfo.getStackTrace(); // filter the current thread if (threadInfo.getThreadId() == Thread.currentThread().getId()) continue; // filter name if (namePrefix != null && namePrefix.trim().length() > 0) { if (!threadInfo.getThreadName().startsWith(namePrefix)) continue; } // filter state if (stateParam != null && !stateParam.equals("all")) { if (!threadInfo.getThreadState().toString().equals(stateParam)) continue; } // show only specific thread id if (threadId != -1) { if (threadInfo.getThreadId() != threadId) continue; } %> <dl> <dt> <b><%=threadInfo.getThreadName()%> (<%=threadInfo.getThreadState()%>)</b> - <a href="<%=uri%>?tid=<%=threadInfo.getThreadId()%>"><%=threadInfo.getThreadId()%></a> </dt> <dd> <pre> <% for(int i = 0; i < stackTraces.length; i++) { out.println(stackTraces[i]); } %> </pre> </dd> </dl> <% } %> </body> </html> |
간단한 메모리 정보와 현재 쓰레드들의 스택들을 보여줍니다. … Continue reading
paros customize를 위한 개발환경 설정 – github에 가입하고 로그인 한다.(생략) – 상단의 Create a new repo 버튼으로 새로운 저장소를 생성한다 입력할게 없이 간단하다. 저장소 생성 결과화면 – 콘솔에서 생성한 git의 clone 을 만든다 – paros의 원본 소스를 받는다. http://www.parosproxy.org/download.shtml … Continue reading
Notice : 해당 자료가 저작권등에 의해서 문제가 있다면 바로 삭제하겠습니다. 연구목적으로 사용하지 않고 악의적인 목적으로 이용할 경우 발생할 수 있는 법적은 책임은 모두 본인에게 있습니다. 참고 : ibatis (ibatis.apache.org) 는 google code 쪽으로 이전했으며, 이름을 mybatis.org으로 바꿨다 1. myBatis 개요 MyBatis … Continue reading
pom.xml 부분 jar를 작성하기 위해서는 maven-jar-plugin 이 필요하며, 의존성 jar 파일들을 제어하기 위해서는 maven-dependency-plugin이 필요하다. 그러나 maven-dependency-plugin 설정을 하여 m2eclipse로 package하게 되면 다음과 같은 메세지의 에러가 발생된다.
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maven-dependency-plugin (goals "copy-dependencies","unpack") is not supported by m2e |
이를 해결하기 위하여 구글링해보면, project build lifecycle mapping 에 위의 플러그인을 … Continue reading
1. JVM Heap memory 설성 – eclipse.exe 실행시 -Xms128m -Xmx256m 처럼 할당할 메모리를 설정. 2. Automatic folding 설정 해제 – Window > Preferences > Java > Editor > Folding 옵션을 모두 해제(disable). 3. Automatic Code Insight 설정 해제 – … Continue reading
Java DateUtil
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package com.apollo89.java.util; import java.text.DateFormat; import java.text.ParsePosition; import java.text.SimpleDateFormat; import java.util.Calendar; import java.util.Date; import java.util.GregorianCalendar; import java.util.Locale; import java.util.TimeZone; import java.util.Vector; public class DateUtil { public static String getDate2String(String date, String originFormat, String targetFormat, String locale) { SimpleDateFormat parser = new SimpleDateFormat(originFormat, new Locale(locale)); ParsePosition pos = new ParsePosition(0); DateFormat df = new SimpleDateFormat(targetFormat); return df.format(parser.parse(date, pos)); } public static String[] getDates(String startDay, String endDay) { Vector v = new Vector(); v.addElement(startDay); Calendar cal = getCalendar(); cal.setTime(string2Date(startDay)); String nextDay = date2String(cal.getTime()); while (!nextDay.equals(endDay)) { cal.add(Calendar.DATE, 1); nextDay = date2String(cal.getTime()); v.addElement(nextDay); } String[] dates = new String[v.size()]; v.copyInto(dates); return dates; } public static Calendar getCalendar() { Calendar cal = new GregorianCalendar(TimeZone.getTimeZone("GMT+09:00"), Locale.KOREA); cal.setTime(new Date()); return cal; } public static Date string2Date(String s) { return string2Date(s, "yyyyMMdd"); } public static Date string2Date(String s, String format) { Date date = null; SimpleDateFormat sdf = new SimpleDateFormat(format); date = sdf.parse(s, new ParsePosition(0)); return date; } public static String date2String(Date d) { return date2String(d, "yyyyMMdd"); } public static String date2String(Date d, String format) { SimpleDateFormat sdf = new SimpleDateFormat(format); return sdf.format(d); } } |
JDBC Driver 버전 확인
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]$ jar -xvf ojdbc14.jar ]$ cat META-INF/MANIFEST.MF |
Oracle 서버 버전확인
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> select * from product_component_version; |
JDBC Driver 다운받는곳 http://www.oracle.com/technetwork/database/features/jdbc/ 관련 에러 SQLException java.sql.SQLException: OALL8 is in an inconsistent state.
ant에 tomcat deploy 사용시 java heap space 에러 발생
기존 서비스를 tomcat 5.5에서 tomcat7으로 대폭 올렸다ㅋㅋ 그랬더니 아래와 같은 에러가…ㅋㅋ java.lang.IllegalArgumentException: taglib definition not consistent with specification version 구글님께 물어보니 web.xml을 아래와 같이 변경하란다..
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<?xml version="1.0" encoding="UTF-8"?> <web-app xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_5.xsd" version="2.5"> |
그래도 에러가 나서 보니… web.xml의 taglib 노드를 jsp-config 노드로 감싸줘야 된단다..
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<jsp-config> <tablib> ... </taglib> </jsp-config> |
하고나니 … Continue reading