版本是8.1

这是log文件：

[2016-04-01 22:02:15.696]: NameResolver - to parse 取消
[2016-04-01 22:02:16.678]: NameResolver - to parse 用于提取安装数据的磁盘空间不足。{0}中需要额外的 {1}。
[2016-04-01 22:02:17.850]: NameResolver - to parse 安装大小: {0}
[2016-04-01 22:02:17.852]: NameResolver - to parse C:\Program Files (x86)\NetBeans 8.1
[2016-04-01 22:02:18.438]: NameResolver - to parse 安装大小: {0}
[2016-04-01 22:02:18.439]: NameResolver - to parse C:\Program Files (x86)\NetBeans 8.1
[2016-04-01 22:02:18.679]: NameResolver - to parse 用于提取安装数据的磁盘空间不足。{0}中需要额外的 {1}。
[2016-04-01 22:02:18.895]: NameResolver - to parse 安装大小: {0}
[2016-04-01 22:02:18.897]: NameResolver - to parse C:\Program Files (x86)\NetBeans 8.1
[2016-04-01 22:02:19.355]: NameResolver - to parse 安装大小: {0}
[2016-04-01 22:02:19.356]: NameResolver - to parse C:\Program Files (x86)\NetBeans 8.1
[2016-04-01 22:02:19.799]: NameResolver - to parse 安装大小: {0}
[2016-04-01 22:02:19.801]: NameResolver - to parse C:\Program Files (x86)\NetBeans 8.1
[2016-04-01 22:02:20.281]: NameResolver - to parse 安装大小: {0}
[2016-04-01 22:02:20.283]: NameResolver - to parse C:\Program Files (x86)\NetBeans 8.1
[2016-04-01 22:02:20.681]: NameResolver - to parse 用于提取安装数据的磁盘空间不足。{0}中需要额外的 {1}。
[2016-04-01 22:02:20.719]: NameResolver - to parse 安装大小: {0}
[2016-04-01 22:02:20.720]: NameResolver - to parse 需要{1}才能安装{0}。
[2016-04-01 22:02:21.152]: NameResolver - to parse 安装大小: {0}
[2016-04-01 22:02:21.153]: NameResolver - to parse 需要{1}才能安装{0}。
[2016-04-01 22:02:21.698]: NameResolver - to parse 安装大小: {0}

发出来会被删

实在不行，干脆重装系统，重新下jdk和NetBeans

拿去水了