一、 下载
https://www.eclipse.org/downloads/download.php?file=/mat/1.10.0/rcp/MemoryAnalyzer-1.10.0.20200225-macosx.cocoa.x86_64.zip
注意选择国内的下载镜像文件，会很快。如下图所示：
二、安装
使用unzip命令解压刚才下载的zip文件，解压后得到mat文件，如下
双击mat文件打开会报如下错误
按照提示打开日志文件，会有如下错误信息
java.lang.IllegalStateException: The platform metadata area could not be written: /private/var/folders/bx/32k5wynn03l5htl0lkzz4bw00000gn/T/AppTranslocation/907E9021-3F3C-441C-BAF5-F40CFD9ADD01/d/mat.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.(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. (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 java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:564) 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)
- 解决方式如下
右键mat显示包内容，进入Contents->MacOS下面，会有一个MemoryAnalyzer的命令。
打开终端，进入此路径找到MemoryAnalyzer，
一般路径是 /Users/xx/Downloads/memoryAnalyzer/mat.app/Contents/MacOS/
其中 /Users/xx/Downloads/memoryAnalyzer/ 是我的解压路径
运行如下命令打开
./MemoryAnalyzer
成功启动，如下，然后就可以打开需要分析的文件。
