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mbean
=======
> 查看 Mbean 的信息
这个命令可以便捷的查看或监控 Mbean 的属性信息。
### 参数说明
|参数名称|参数说明|
|---:|:---|
|*name-pattern*|名称表达式匹配|
|*attribute-pattern*|属性名表达式匹配|
|[m]|查看元信息|
|[i:]|刷新属性值的时间间隔 (ms)|
|[n:]|刷新属性值的次数|
|[E]|开启正则表达式匹配，默认为通配符匹配。仅对属性名有效|
### 使用参考
列出所有 Mbean 的名称：
```bash
mbean
```
查看 Mbean 的元信息：
```bash
mbean -m java.lang:type=Threading
```
查看mbean属性信息：
```bash
mbean java.lang:type=Threading
```
mbean的name支持通配符匹配：
```bash
mbean java.lang:type=Th*
```
>注意：
通配符匹配特定的属性字段：
```bash
mbean java.lang:type=Threading *Count
```
使用`-E`命令切换为正则匹配：
```bash
mbean -E java.lang:type=Threading PeakThreadCount|ThreadCount|DaemonThreadCount
```
使用`-i`命令实时监控：
```bash
mbean -i 1000 java.lang:type=Threading *Count
```