GroovyShell 脚本应用

GroovyShell 脚本应用

在Groovy中你可以使用GroovyShell对Groovy脚本和表达式进行调试，GroovyShell允许你通过Binding对象传入或传出变量。下面通过三种方式，传递参数。

def groovyShellTest1()
{
    def city = new City()
        
    def shell = new GroovyShell()
    def closure
    def result
    def shellContext = "{city->city.name='haerbin';city.tel='123456';city.save();return city;}"

    try
    {
        closure = shell.evaluate(shellContext)
        result = closure(city)
        println "result = " + result
        return result
    }
    catch (Exception e)
    {
        println e
    }
}

def groovyShellTest2()
{
    def city = new City()

    Binding binding = new Binding();
    binding.setVariable("city", city);

    def shell = new GroovyShell(binding)
    def result
    def shellContext = "city.name='haerbin2';city.tel='876543';city.save();return city;"
    try
    {
        result = shell.evaluate(shellContext)
        println "result = " + result
        return result
    }
    catch (Exception e)
    {
        println e
    }
}

def groovyShellTest3()
{
    Binding binding = new Binding();
    binding.setVariable("age", 10);

    def shell = new GroovyShell(binding)
    def result
    try
    {
        result = shell.evaluate("println 'Hello Groovy !';return age * 10")

        println "result = " + result
        return result
    }
    catch (Exception e)
    {
        println e
    }
}