Java VisualVM（jvisualvm）工具抛出警告；无法安装某些模块"；启动时

Java VisualVM（jvisualvm）工具在启动时抛出警告“无法安装某些模块”，此后甚至单击jvisualvm警告屏幕忽略按钮也不会启动

系统详细信息：
1.Java版本“1.8.0”Java热点（TM）64位服务器虚拟机（构建 25.0-b69，混合模式）
2.OS Debian 7.8 64位

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根本原因是jvisualvm用户目录指向我删除并更正的一些旧java引用。详情如下:

以了解问题的细节；我使用控制台选项运行了jvisualvm

**./jvisualvm -J-Dnetbeans.logger.console=true

这给了我一些输出和细节，如下所示：

Log Session: Monday, August 8, 2016 12:39:55 AM EDT
>System Info: 
  Product Version         = Java VisualVM
  Operating System        = Linux version 3.2.0-4-amd64 running on amd64
  Java; VM; Vendor        = 1.8.0; Java HotSpot(TM) 64-Bit Server VM 25.0-b69; Oracle Corporation
  Runtime                 = Java(TM) SE Runtime Environment 1.8.0-b129
  Java Home               = /usr/local/jetty/common/Java/jdk8/jre
  System Locale; Encoding = en_US (visualvm); UTF-8
  Home Directory          = /root
  Current Directory       = /usr/local/jetty/common/Java/jdk8/bin
  User Directory          = /root/.visualvm/7u60
  Cache Directory         = /root/.cache/visualvm/7u60
  Installation            = /usr/local/jetty/common/Java/jdk8/lib/visualvm/visualvm
                            /usr/local/jetty/common/Java/jdk8/lib/visualvm/profiler
                            /usr/local/jetty/common/Java/jdk8/lib/visualvm/platform
  Boot & Ext. Classpath   = /usr/local/jetty/common/Java/jdk8/jre/lib/resources.jar:/usr/local/jetty/common/Java/jdk8/jre/lib/rt.jar:/usr/local/jetty/common/Java/jdk8/jre/lib/sunrsasign.jar:/usr/local/jetty/common/Java/jdk8/jre/lib/jsse.jar:/usr/local/jetty/common/Java/jdk8/jre/lib/jce.jar:/usr/local/jetty/common/Java/jdk8/jre/lib/charsets.jar:/usr/local/jetty/common/Java/jdk8/jre/lib/jfr.jar:/usr/local/jetty/common/Java/jdk8/jre/classes:/usr/local/jetty/common/Java/jdk8/jre/lib/ext/localedata.jar:/usr/local/jetty/common/Java/jdk8/jre/lib/ext/zipfs.jar:/usr/local/jetty/common/Java/jdk8/jre/lib/ext/sunpkcs11.jar:/usr/local/jetty/common/Java/jdk8/jre/lib/ext/nashorn.jar:/usr/local/jetty/common/Java/jdk8/jre/lib/ext/dnsns.jar:/usr/local/jetty/common/Java/jdk8/jre/lib/ext/sunec.jar:/usr/local/jetty/common/Java/jdk8/jre/lib/ext/jfxrt.jar:/usr/local/jetty/common/Java/jdk8/jre/lib/ext/sunjce_provider.jar:/usr/local/jetty/common/Java/jdk8/jre/lib/ext/cldrdata.jar
  Application Classpath   = /usr/local/jetty/common/Java/jdk8/lib/visualvm/platform/lib/boot.jar:/usr/local/jetty/common/Java/jdk8/lib/visualvm/platform/lib/org-openide-modules.jar:/usr/local/jetty/common/Java/jdk8/lib/visualvm/platform/lib/org-openide-util.jar:/usr/local/jetty/common/Java/jdk8/lib/visualvm/platform/lib/org-openide-util-lookup.jar:/usr/local/jetty/common/Java/jdk8/lib/visualvm/platform/lib/locale/boot_ja.jar:/usr/local/jetty/common/Java/jdk8/lib/visualvm/platform/lib/locale/boot_zh_CN.jar:/usr/local/jetty/common/Java/jdk8/lib/visualvm/platform/lib/locale/org-openide-modules_ja.jar:/usr/local/jetty/common/Java/jdk8/lib/visualvm/platform/lib/locale/org-openide-modules_zh_CN.jar:/usr/local/jetty/common/Java/jdk8/lib/visualvm/platform/lib/locale/org-openide-util_ja.jar:/usr/local/jetty/common/Java/jdk8/lib/visualvm/platform/lib/locale/org-openide-util-lookup_ja.jar:/usr/local/jetty/common/Java/jdk8/lib/visualvm/platform/lib/locale/org-openide-util-lookup_zh_CN.jar:/usr/local/jetty/common/Java/jdk8/lib/visualvm/platform/lib/locale/org-openide-util_zh_CN.jar:/usr/local/jetty/common/Java/jdk8/lib/dt.jar:/usr/local/jetty/common/Java/jdk8/lib/tools.jar
  Startup Classpath       = /usr/local/jetty/common/Java/jdk8/lib/visualvm/platform/core/core.jar:/usr/local/jetty/common/Java/jdk8/lib/visualvm/platform/core/org-openide-filesystems.jar:/usr/local/jetty/common/Java/jdk8/lib/visualvm/platform/core/locale/org-openide-filesystems_zh_CN.jar:/usr/local/jetty/common/Java/jdk8/lib/visualvm/platform/core/locale/core_ja.jar:/usr/local/jetty/common/Java/jdk8/lib/visualvm/platform/core/locale/org-openide-filesystems_ja.jar:/usr/local/jetty/common/Java/jdk8/lib/visualvm/platform/core/locale/core_zh_CN.jar:/usr/local/jetty/common/Java/jdk8/lib/visualvm/visualvm/core/com-sun-tools-visualvm-modules-startup.jar:/usr/local/jetty/common/Java/jdk8/lib/visualvm/visualvm/core/locale/com-sun-tools-visualvm-modules-startup_ja.jar:/usr/local/jetty/common/Java/jdk8/lib/visualvm/visualvm/core/locale/com-sun-tools-visualvm-modules-startup_zh_CN.jar:/usr/local/jetty/common/Java/jdk8/lib/visualvm/visualvm/core/locale/core_visualvm.jar
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就jdk8和home等而言，一切都很好。但用户目录指向一些不存在的java路径，然后我在linux文件系统中跟踪它：

User Directory          = /root/.visualvm/7u60

为了解决问题；我删除了操作系统中的

/root/.visualvm/7u60

目录。 再次运行

/jvisualvm

，它正常工作

早些时候，我尝试使用

/jvisualvm

和

--help

选项运行，其中看到了jdkhome并尝试更改jdkhome，但没有成功。最后，从操作系统中删除文件夹对我来说很有效

Wow! Great!! 

Wow! Great!!