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JAVA与groovy脚本的结合使用

2024-08-04 14:10:11   222人阅读

java执行groovy shell脚本

<dependency>
 <groupId>org.codehaus.groovy</groupId>
 <artifactId>groovy-all</artifactId>
 <version>2.4.0-beta-1</version>
</dependency>

添加groovy jar包支持
====================================================
package groovy;
import groovy.lang.Binding;
import groovy.lang.GroovyShell;
public class Java2GroovyShell {
 public static void main(String[] args) {
  // TODO Auto-generated method stub
  Binding binding = new Binding();
  binding.setVariable("var", 5);
  GroovyShell gs = new GroovyShell(binding);
  Object value = http://www.mamicode.com/gs.evaluate("println ‘Hello Groovy !‘;abc=123;return var*10");//执行groovyshell脚本
  System.out.println(value.equals(50));
  System.out.println(binding.getVariable("abc").equals(123));
 }
}
====================================================直接运行groovy的脚本


++++++++++++++++++++++++++++++++++++++++++++++++++++JAVA中动态运行groovy脚本
通过JAVA来加载如一个groovy脚本文件，然后调用该脚本中的方法
package groovy;
import groovy.lang.GroovyClassLoader;
import groovy.lang.GroovyObject;
import java.io.File;
public class Java2GroovyDynamic {
 public static void main(String[] args) throws Exception {
  // TODO Auto-generated method stub
  ClassLoader parent = ClassLoader.getSystemClassLoader();
  GroovyClassLoader loader = new GroovyClassLoader(parent);
  Class groovyClass = loader.parseClass(new File("C:\\normandy_workspace\\groovy\\src\\groovy\\GroovyDemo.groovy"));
  GroovyObject groovyObject = (GroovyObject)groovyClass.newInstance();
  Object[] param = {123,321};
  int res = (int) groovyObject.invokeMethod("add", param);
  System.out.println("res="+res);
 
 
 
 }
}
groovy脚本
package groovy
class GroovyDemo {
 static int add(int x,int y) {
  return x+y;
 }
 
 static main(args) {
  int z = add(123,321);
  println("x+y="+z);
 }
}
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

Groovy脚本引擎
通过设定CLASSPATH来初始化groovy脚本引擎，可以运行该path下的任何groovy脚本文件了
package groovy;
import groovy.lang.Binding;
import groovy.util.GroovyScriptEngine;
public class Java2GroovyEngine {
 public static void main(String[] args) throws Exception {
  // TODO Auto-generated method stub
  String path = "C:\\normandy_workspace\\groovy\\src\\groovy\\";
  GroovyScriptEngine gse = new GroovyScriptEngine(path);
  Binding binding = new Binding();
  binding.setVariable("input", "Groovy");
  gse.run("Test.groovy", binding);
  System.out.println(binding.getVariable("output"));
 
 }
}
groovy脚本
package groovy;
output = "Hello ${input}";















JAVA与groovy脚本的结合使用


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