SpringBoot项目中使用Groovy脚本的示例代码

       <dependency>
            <groupId>org.codehaus.groovy</groupId>
            <artifactId>groovy</artifactId>
            <version>2.5.5</version>
        </dependency>
        <dependency>
            <groupId>org.codehaus.groovy</groupId>
            <artifactId>groovy-jsr223</artifactId>
            <version>2.5.5</version>
        </dependency>

ScriptEngineManager factory = new ScriptEngineManager();
ScriptEngine engine = factory.getEngineByName("groovy");
// 变量
Bindings bindings = engine.createBindings();
bindings.put("value", 10);
// groovy脚本
String scriptStr = "if (value == null) { return false}\n if (value <= 0) {return false} else { return true}";
// 执行脚本
Object res = engine.eval(scriptStr, bindings);

            ClassLoader parent = this.getClass().getClassLoader();
            GroovyClassLoader loader = new GroovyClassLoader(parent);
            Class groovyClass = loader.parseClass(
                    new File("src/main/java/com/example/demo/groovyscript/test.groovy")
            );
            GroovyObject groovyObject= (GroovyObject)groovyClass.newInstance();
            String result = (String) groovyObject.invokeMethod("test", id);

package com.example.demo.groovyscript

class MyTest{
    static String test(String id){
        return "test1 id:"+ id;
    }
}

            GroovyScriptEngine engine = new GroovyScriptEngine("src/main/java/com/example/demo/groovyscript");
            Script script = engine.createScript("test.groovy", new Binding());
            return (String) script.invokeMethod("test",id);

def test(id){
    return "test2 id:"+ id;
}

            GroovyScriptEngine engine = new GroovyScriptEngine("src/main/java/com/example/demo/groovyscript");
            Binding binding = new Binding();
            binding.setVariable("id",id);
            engine.run("test.groovy",binding);
            return binding.getVariable("output").toString();

package com.example.demo.groovyscript

output = "test3 id: ${id}"