eclipse 4.2.2 无法启动问题
configuration/*.log 错误信息如下：
!SESSION 2013-06-05 02:18:29.527 -----------------------------------------------
eclipse.buildId=M20130204-1200
java.version=1.4.2_03
java.vendor=Sun Microsystems Inc.
BootLoader constants: OS=win32, ARCH=x86, WS=win32, NL=zh_CN
Command-line arguments: -os win32 -ws win32 -arch x86
!ENTRY org.eclipse.equinox.p2.reconciler.dropins 4 0 2013-06-05 02:18:30.448
!MESSAGE FrameworkEvent ERROR
!STACK 0
org.osgi.framework.BundleException: The bundle "org.eclipse.equinox.p2.reconciler.dropins_1.1.200.v20120301-2145 [116]" could not be resolved. Reason: Missing Constraint: Import-Package: org.eclipse.equinox.internal.p2.extensionlocation; version="0.0.0"
at org.eclipse.osgi.framework.internal.core.AbstractBundle.getResolverError(AbstractBundle.java:1332)
at org.eclipse.osgi.framework.internal.core.AbstractBundle.getResolutionFailureException(AbstractBundle.java:1316)
at org.eclipse.osgi.framework.internal.core.BundleHost.startWorker(BundleHost.java:323)
at org.eclipse.osgi.framework.internal.core.AbstractBundle.resume(AbstractBundle.java:390)
at org.eclipse.osgi.framework.internal.core.Framework.resumeBundle(Framework.java:1176)
at org.eclipse.osgi.framework.internal.core.StartLevelManager.resumeBundles(StartLevelManager.java:559)
at org.eclipse.osgi.framework.internal.core.StartLevelManager.resumeBundles(StartLevelManager.java:544)
at org.eclipse.osgi.framework.internal.core.StartLevelManager.incFWSL(StartLevelManager.java:457)
at org.eclipse.osgi.framework.internal.core.StartLevelManager.doSetStartLevel(StartLevelManager.java:243)
at org.eclipse.osgi.framework.internal.core.StartLevelManager.dispatchEvent(StartLevelManager.java:438)
at org.eclipse.osgi.framework.internal.core.StartLevelManager.dispatchEvent(StartLevelManager.java:1)
at org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:230)
at org.eclipse.osgi.framework.eventmgr.EventManager$EventThread.run(EventManager.java:340)
!ENTRY org.eclipse.osgi 4 0 2013-06-05 02:18:30.473
!MESSAGE Could not start bundle: org.eclipse.equinox.console
!STACK 0
org.osgi.framework.BundleException: Could not start bundle: org.eclipse.equinox.console
at org.eclipse.osgi.framework.internal.core.ConsoleManager.checkForConsoleBundle(ConsoleManager.java:217)
at org.eclipse.core.runtime.adaptor.EclipseStarter.startup(EclipseStarter.java:297)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:176)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:629)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:584)
at org.eclipse.equinox.launcher.Main.run(Main.java:1438)
Caused by: org.osgi.framework.BundleException: The bundle "org.eclipse.equinox.console_1.0.0.v20120522-1841 [88]" could not be resolved. Reason: Missing Constraint: Bundle-RequiredExecutionEnvironment: J2SE-1.5
at org.eclipse.osgi.framework.internal.core.AbstractBundle.getResolverError(AbstractBundle.java:1332)
at org.eclipse.osgi.framework.internal.core.AbstractBundle.getResolutionFailureException(AbstractBundle.java:1316)
at org.eclipse.osgi.framework.internal.core.BundleHost.startWorker(BundleHost.java:323)
at org.eclipse.osgi.framework.internal.core.AbstractBundle.start(AbstractBundle.java:300)
at org.eclipse.osgi.framework.internal.core.ConsoleManager.checkForConsoleBundle(ConsoleManager.java:215)
... 9 more
Root exception:
org.osgi.framework.BundleException: The bundle "org.eclipse.equinox.console_1.0.0.v20120522-1841 [88]" could not be resolved. Reason: Missing Constraint: Bundle-RequiredExecutionEnvironment: J2SE-1.5
at org.eclipse.osgi.framework.internal.core.AbstractBundle.getResolverError(AbstractBundle.java:1332)
at org.eclipse.osgi.framework.internal.core.AbstractBundle.getResolutionFailureException(AbstractBundle.java:1316)
at org.eclipse.osgi.framework.internal.core.BundleHost.startWorker(BundleHost.java:323)
at org.eclipse.osgi.framework.internal.core.AbstractBundle.start(AbstractBundle.java:300)
at org.eclipse.osgi.framework.internal.core.ConsoleManager.checkForConsoleBundle(ConsoleManager.java:215)
at org.eclipse.core.runtime.adaptor.EclipseStarter.startup(EclipseStarter.java:297)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:176)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:629)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:584)
at org.eclipse.equinox.launcher.Main.run(Main.java:1438)
!ENTRY org.eclipse.osgi 2 0 2013-06-05 02:18:30.750
!MESSAGE One or more bundles are not resolved because the following root constraints are not resolved:
!SUBENTRY 1 org.eclipse.osgi 2 0 2013-06-05 02:18:30.750
!MESSAGE Bundle reference:file:plugins/org.eclipse.jdt.launching_3.6.101.v20130111-183046.jar was not resolved.
!SUBENTRY 2 org.eclipse.jdt.launching 2 0 2013-06-05 02:18:30.750
!MESSAGE Missing required capability Require-Capability: osgi.ee; filter="(&(osgi.ee=JavaSE)(version=1.5))".
!SUBENTRY 1 org.eclipse.osgi 2 0 2013-06-05 02:18:30.750
!MESSAGE Bundle reference:file:plugins/org.eclipse.equinox.jsp.jasper.registry_1.0.300.v20120912-130548.jar was not resolved.
!SUBENTRY 2 org.eclipse.equinox.jsp.jasper.registry 2 0 2013-06-05 02:18:30.750
!MESSAGE Missing required capability Require-Capability: osgi.ee; filter="(|(&(osgi.ee=CDC/Foundation)(version=1.0))(&(osgi.ee=JavaSE)(version=1.3)))".
!SUBENTRY 1 org.eclipse.osgi 2 0 2013-06-05 02:18:30.750
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JAVA/JRE环境变量配置问题：
我的电脑---->属性----->高级---->环境变量，
在系统变量中如下设置：
1)JAVA_HOME = C:\Program Files\Java\jdk1.6.0_10
2)JRE_HOME = C:\Program Files\Java\jre6
3)path =%JAVA_HOME%\bin; *********(把自定义安装的JDK的bin目录添加到系统PATH路径的最前面)
4)classpath = .;%JAVA_HOME%\lib
要注意的是：path已经存在，我们只要“修改”添加：[;%JAVA_HOME%\bin]；
其他的使用“新建”，classpath中不能少：[.;]，并且得在英文输入法下输入；
JAVA_HOME，JRE_HOME，path是为eclipse,tomcat等做一些设置的，建议是最好设置一下，免得又出现一不必要的麻烦。
最后在"命令提示符"下输入:[class -version],可以见到配置正确有关的信息.
