import
javax.script.*;
public
class
TestScript {
public
static
void
main(String[] args)
throws
Exception {
String str =
"(a >= 0 && a <= 5)"
;
System.out.println(TestScript.isInclude(str,str));
}
public static Boolean isInclude(String elValue,String elString){
String el = elString.substring(elString.indexOf("(")+1, elString.indexOf(")"));
System.out.println(el);
ScriptEngineManager manager = new ScriptEngineManager(); //ScriptEngineManager 和 ScriptEngine
ScriptEngine engine = manager.getEngineByName("js"); //ScriptEngine engine = ScriptEngineManager.getEngineByName("js") ;
engine.put("money",elValue);
boolean eval = false;
try {
eval = (boolean) engine.eval(el);
} catch (ScriptException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return eval;
}
}
使用ScriptEngine 对象的eval方法解析逻辑字符串