Java和Groovy脚本互相调用实例

本实例是GODU动态脚本的一个技术简化版，演示了java调groovy，groovy又调java的运行过程。 测试用例： package com.boco.godu.integration;

import java.util.HashMap;

import java.util.Map;

import org.apache.log4j.Logger;

import org.junit.After;

import org.junit.AfterClass;

import org.junit.Before;

import org.junit.BeforeClass;

import org.junit.Test;

import com.boco.godu.gapi.ConnManager;

import com.boco.godu.gapi.Constants;

import com.boco.godu.gapi.IConnection;

import com.boco.godu.gapi.IResult;

public class SimpleExpScriptTest {

private  static  final  Logger  logger  = Logger

 . getLogger (SimpleExpScriptTest.  class  );

private  IConnection  conn ;

@Before

public  void  setUp()  throws  Exception {

 conn  = ConnManager. getDataConn ( "10.0.2.47" , 1234,

   "< aa ><7001><administrator><autocmd>" ,  "goduapp" ,

  Constants.  TYPE_DATA_CMD_SYNC  , 5);

}

@After

public  void  tearDown()  throws  Exception {

 conn .close();

}

@Test

public  void  testImport()  throws  Exception {

Map<String, String> params =  new  HashMap<String, String>();

params.put(  "cmd1" ,  "ls" );

params.put(  "id" , 3);

IResult result =  conn .execScript( "ImportEx" , params);

}

}

Java代码：

IConnection.java

package com.boco.godu.gapi;

public interface IConnection {

......// other method definition

 public  IResult execScript (String name, Map<String, Object> params)

   throws  Exception;

}

GoduDataConnection.java

package com.boco.godu.gapi.conn;

public class GoduDataConnection extends AbstractConnection {

......// Other IConnection Methods

 public  IResult execScript(String name, Map<String, Object> params)

   throws  Exception {

String[] roots =  new  String[] {  "e:/MyDoc/Project/GoduScript"  };

GroovyScriptEngine gse =  new  GroovyScriptEngine(roots);

Binding binding =  new  Binding();

 for  (Entry<String, Object> item : params.entrySet()) {

 binding.setVariable(item.getKey(), item.getValue());

}

GapiIosessionUtils giu =  new  GapiIosessionUtils();

binding.setVariable(  "giu" , giu );

gse.run(name, binding);

System.  out  .println(binding.getVariable(  "result" )); // 运行结果是这里输出“11”，即3*2+5。

 return  null  ;

}

}

GapiIosessionUtils.java

package com.boco.godu.gapi.util;

public class GapiIosessionUtils {

......// other method

public  int  testM(  int  x,  int  y) {

 return  x * 2 + y;

}

}

groovy代码：

e:\MyDoc\Project\GoduScript\ImportEx

def send(cmd){

def result = giu.testM(cmd,5);

return result;

}

result = send(id)

运行过程

测试用例 ->GoduDataConnection.java -> groovy代码 -> GapiIosessionUtils.java；

总结

binding的setVariable中定义的变量（如giu是com.boco.godu.gapi.util.GapiIosessionUtils对象，id是int型数据）在groovy脚本里直接使用，可以出现在脚本的任何地方，且无需声明类型，无需使用import导入定义该变量的类（例如对于giu来说，如果在java代码中，需要import com.boco.godu.gapi.util.GapiIosessionUtils）。