ognl

Execute ognl expression.

Since 3.0.5.

Parameters

Name	Specification
express	expression to be executed
[c:]	The hashcode of the ClassLoader that executes the expression, default ClassLoader is SystemClassLoader.
[x]	Expand level of object (1 by default).

Usage

• Special usages
• OGNL official guide

Call static method:

$ ognl '@java.lang.System@out.println("hello")'
null

Get static field:

$ ognl '@demo.MathGame@random'
@Random[
    serialVersionUID=@Long[3905348978240129619],
    seed=@AtomicLong[125451474443703],
    multiplier=@Long[25214903917],
    addend=@Long[11],
    mask=@Long[281474976710655],
    DOUBLE_UNIT=@Double[1.1102230246251565E-16],
    BadBound=@String[bound must be positive],
    BadRange=@String[bound must be greater than origin],
    BadSize=@String[size must be non-negative],
    seedUniquifier=@AtomicLong[-3282039941672302964],
    nextNextGaussian=@Double[0.0],
    haveNextNextGaussian=@Boolean[false],
    serialPersistentFields=@ObjectStreamField[][isEmpty=false;size=3],
    unsafe=@Unsafe[sun.misc.Unsafe@28ea5898],
    seedOffset=@Long[24],
]

Execute a multi-line expression, and return a list:

$ ognl '#value1=@System@getProperty("java.home"), #value2=@System@getProperty("java.runtime.name"), {#value1, #value2}'
@ArrayList[
    @String[/opt/java/8.0.181-zulu/jre],
    @String[OpenJDK Runtime Environment],
]