eclipse突然打不开了····

之前还好好的，大概有几个星期没用他，刚刚突然就打不开了，让我查一个.txt文件，文件内容如下

!SESSION 2015-12-29 22:17:47.795 -----------------------------------------------
 eclipse.buildId=unknown
 java.version=1.8.0_65
 java.vendor=Oracle Corporation
 BootLoader constants: OS=win32, ARCH=x86_64, WS=win32, NL=en_US
 Command-line arguments:  -os win32 -ws win32 -arch x86_64


 !ENTRY org.eclipse.osgi 4 0 2015-12-29 22:17:48.227
 !MESSAGE Application error
 !STACK 1
 java.lang.IllegalStateException: Unable to acquire application service. Ensure that the org.eclipse.core.runtime bundle is resolved and started (see config.ini).
 at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:78)
 at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:380)
 at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:235)
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
 at java.lang.reflect.Method.invoke(Method.java:497)
 at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:669)
 at org.eclipse.equinox.launcher.Main.basicRun(Main.java:608)
 at org.eclipse.equinox.launcher.Main.run(Main.java:1515)