我定义了以下变量:
def VAL1 = 'foo'
def VAL2 = 'bar'
def s2 = 'hello ${VAL1}, please have a ${VAL2}'
使这种替换最简单的方法是什么?
我如何从s2
构建一个GString并对其进行评估?
(VALs和s2是从数据库加载的,这个代码片段仅用于演示我的问题。)
答案 0 :(得分:6)
如果您可以将变量放入地图,可以使用SimpleTemplateEngine
import groovy.text.SimpleTemplateEngine
def binding = [ VAL1:'foo', VAL2:'bar' ]
def template = 'hello ${VAL1}, please have a ${VAL2}'
println new SimpleTemplateEngine().createTemplate( template ).make( binding ).toString()
修改强>
您可以使用绑定而不是地图,因此以下适用于groovyconsole:
// No def. We want the vars in the script's binding
VAL1 = 'foo'
VAL2 = 'bar'
def template = 'hello ${VAL1}, please have a ${VAL2}'
// Pass the variables defined in the binding to the Template
new SimpleTemplateEngine().createTemplate( template ).make( binding.variables ).toString()
答案 1 :(得分:1)
以及如何:
def VAL1 = 'foo'
def VAL2 = 'bar'
def s2 = "hello ${VAL1}, please have a ${VAL2}".toString()
注意:注意双引号