启动Eclipse Memory Analyzer(即MAT)程序报如下异常：
eclipse.buildId=unknown
java.version=1.8.0_141
java.vendor=Oracle Corporation
BootLoader constants: OS=macosx, ARCH=x86_64, WS=cocoa, NL=zh_CN
Framework arguments: --data /Users/lcp/Documents/mat -keyring /Users/lcp/.eclipse_keyring
Command-line arguments: -os macosx -ws cocoa -arch x86_64 --data /Users/lcp/Documents/mat -keyring /Users/lcp/.eclipse_keyring
!ENTRY org.eclipse.osgi 4 0 2019-10-17 15:02:50.158
!MESSAGE Application error
!STACK 1
java.lang.IllegalStateException: The platform metadata area could not be written: /private/var/folders/sm/ss8nr3kj5_36d8tq_867mj9c0000gn/T/AppTranslocation/741D64CC-BF78-4406-A40C-6284FE0279D6/d/mat-1.app/Contents/MacOS/workspace/.metadata. By default the platform writes its content
under the current working directory when the platform is launched. Use the -data parameter to
specify a different content area for the platform.
at org.eclipse.core.internal.runtime.DataArea.assertLocationInitialized(DataArea.java:70)
at org.eclipse.core.internal.runtime.DataArea.getStateLocation(DataArea.java:138)
at org.eclipse.core.internal.preferences.InstancePreferences.getBaseLocation(InstancePreferences.java:44)
at org.eclipse.core.internal.preferences.InstancePreferences.initializeChildren(InstancePreferences.java:209)
at org.eclipse.core.internal.preferences.InstancePreferences.<init>(InstancePreferences.java:59)
at org.eclipse.core.internal.preferences.InstancePreferences.internalCreate(InstancePreferences.java:220)
at org.eclipse.core.internal.preferences.EclipsePreferences.create(EclipsePreferences.java:349)
at org.eclipse.core.internal.preferences.EclipsePreferences.create(EclipsePreferences.java:337)
at org.eclipse.core.internal.preferences.PreferencesService.createNode(PreferencesService.java:393)
at org.eclipse.core.internal.preferences.RootPreferences.getChild(RootPreferences.java:60)
at org.eclipse.core.internal.preferences.RootPreferences.getNode(RootPreferences.java:95)
at org.eclipse.core.internal.preferences.RootPreferences.node(RootPreferences.java:84)
at org.eclipse.core.internal.preferences.AbstractScope.getNode(AbstractScope.java:38)
at org.eclipse.core.runtime.preferences.InstanceScope.getNode(InstanceScope.java:77)
at org.eclipse.ui.preferences.ScopedPreferenceStore.getStorePreferences(ScopedPreferenceStore.java:225)
at org.eclipse.ui.preferences.ScopedPreferenceStore.<init>(ScopedPreferenceStore.java:132)
at org.eclipse.ui.plugin.AbstractUIPlugin.getPreferenceStore(AbstractUIPlugin.java:287)
at org.eclipse.ui.internal.Workbench.lambda$3(Workbench.java:609)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:336)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:597)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:148)
at org.eclipse.mat.ui.rcp.Application.start(Application.java:26)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:388)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:243)
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:498)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:656)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:592)
at org.eclipse.equinox.launcher.Main.run(Main.java:1498)xxxxxxxxxx eclipse.buildId=unknownjava.version=1.8.0_141java.vendor=Oracle CorporationBootLoader constants: OS=macosx, ARCH=x86_64, WS=cocoa, NL=zh_CNFramework arguments: --data /Users/lcp/Documents/mat -keyring /Users/lcp/.eclipse_keyringCommand-line arguments: -os macosx -ws cocoa -arch x86_64 --data /Users/lcp/Documents/mat -keyring /Users/lcp/.eclipse_keyring!ENTRY org.eclipse.osgi 4 0 2019-10-17 15:02:50.158!MESSAGE Application error!STACK 1java.lang.IllegalStateException: The platform metadata area could not be written: /private/var/folders/sm/ss8nr3kj5_36d8tq_867mj9c0000gn/T/AppTranslocation/741D64CC-BF78-4406-A40C-6284FE0279D6/d/mat-1.app/Contents/MacOS/workspace/.metadata. By default the platform writes its contentunder the current working directory when the platform is launched. Use the -data parameter tospecify a different content area for the platform. at org.eclipse.core.internal.runtime.DataArea.assertLocationInitialized(DataArea.java:70) at org.eclipse.core.internal.runtime.DataArea.getStateLocation(DataArea.java:138) at org.eclipse.core.internal.preferences.InstancePreferences.getBaseLocation(InstancePreferences.java:44) at org.eclipse.core.internal.preferences.InstancePreferences.initializeChildren(InstancePreferences.java:209) at org.eclipse.core.internal.preferences.InstancePreferences.<init>(InstancePreferences.java:59) at org.eclipse.core.internal.preferences.InstancePreferences.internalCreate(InstancePreferences.java:220) at org.eclipse.core.internal.preferences.EclipsePreferences.create(EclipsePreferences.java:349) at org.eclipse.core.internal.preferences.EclipsePreferences.create(EclipsePreferences.java:337) at org.eclipse.core.internal.preferences.PreferencesService.createNode(PreferencesService.java:393) at org.eclipse.core.internal.preferences.RootPreferences.getChild(RootPreferences.java:60) at org.eclipse.core.internal.preferences.RootPreferences.getNode(RootPreferences.java:95) at org.eclipse.core.internal.preferences.RootPreferences.node(RootPreferences.java:84) at org.eclipse.core.internal.preferences.AbstractScope.getNode(AbstractScope.java:38) at org.eclipse.core.runtime.preferences.InstanceScope.getNode(InstanceScope.java:77) at org.eclipse.ui.preferences.ScopedPreferenceStore.getStorePreferences(ScopedPreferenceStore.java:225) at org.eclipse.ui.preferences.ScopedPreferenceStore.<init>(ScopedPreferenceStore.java:132) at org.eclipse.ui.plugin.AbstractUIPlugin.getPreferenceStore(AbstractUIPlugin.java:287) at org.eclipse.ui.internal.Workbench.lambda$3(Workbench.java:609) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:336) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:597) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:148) at org.eclipse.mat.ui.rcp.Application.start(Application.java:26) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:388) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:243) 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:498) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:656) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:592) at org.eclipse.equinox.launcher.Main.run(Main.java:1498)java.lang.IllegalStateException: The platform metadata area could not be written: /private/var/folders/9q/zhpkyd3s4y9d5t1nv_5hszww0000gp/T/AppTranslocation/DF264CA5-4EEF-4916-A3FA-881B111294E5/d/mat.app/Contents/MacOS/work/.metadata. By default the platform writes its contentunder the current working directory when the platform is launched. Use the -data parameter tospecify a different content area for the platform.java
解决方案：
打开MemoryAnalyzer.ini，添加一个参数即可解决问题，例如我是mac电脑，打开路径为：sudo vim ~/Downloads/mat.app/Contents/Eclipse/MemoryAnalyzer.ini
添加参数：
-data
/Users/lcp/Documents/mat
完整配置：
-startup
../Eclipse/plugins/org.eclipse.equinox.launcher_1.5.0.v20180512-1130.jar
-data
/Users/lcp/Documents/mat
--launcher.library
../Eclipse/plugins/org.eclipse.equinox.launcher.cocoa.macosx.x86_64_1.1.700.v20180518-1200
-vmargs
-Xmx1024m
-Dorg.eclipse.swt.internal.carbon.smallFonts
-XstartOnFirstThread
