java - 来自 Groovy 的带有参数的 invokeMethod

Question

我想从下面给定的类调用groovy方法

 package infa9

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.HashMap;
import com.ABC.csm.context.AppCtxProperties;

import com.ABC.csm.context.AppContext;


 public class LicenseInfo
{
private StringBuffer licenseInformation;

public LicenseInfo() {
    licenseInformation = new StringBuffer();
}

public StringBuffer getLicenseInformation(){
    return licenseInformation;
}

public void fetchLicenseInformation(HashMap<String,String> params,Map env)
{
    ArrayList<String> licenseList = fetchLicenses(params);
    .
    .
    .

}

private ArrayList<String> fetchLicenses(HashMap<String,String> params,Map env)
{

    ArrayList<String>licenseList = new ArrayList<String>();
    .
    .
    .
return licenseList;

}

}

这就是我想做的

//getting user parameters
HashMap<String,String> params = IntermediateResults.get("userparams")

//getting environment variables
Map env=AppContext.get(AppCtxProperties.environmentVariables)

Object[] arguments=new Object[2]
arguments.putAt("userparams", params)
arguments.putAt("env", env)

GroovyShell shell = new GroovyShell()
Script infa9LicenseScript = shell.parse("plugins.infa9.LicenseInfo")

   infa9LicenseScript.invokeMethod(fetchLicenseInformation, arguments)
   String lic=(String)infa9LicenseScript.invokeMethod(getLicenseInformation,null)

我是否将参数传递给 fetchLicenseInformation正确吗？？我需要通过HashMap<String,String> ,Map请帮我调用带有参数的常规方法

错误:Exception in thread "main" groovy.lang.MissingPropertyException: No such property: userparams for class: [Ljava.lang.Object;

更新

public List<String> fetchLicenses( Map<String,String> params, Map env ) {
//[ 'a', 'b', 'c' ]
  ArrayList<String>licenseList = new ArrayList<String>();
    String infacmdListLicensesCommand = null;

    if (System.getProperty("os.name").contains("Win"))
    {   infacmdListLicensesCommand = env.get("INFA_HOME")
                + "/isp/bin/infacmd.bat ListLicenses -dn "
                + params.get("dn") + " -un " + params.get("un") + " -pd "
                + params.get("pd") + " -sdn " + params.get("sdn") + " -hp "
                + params.get("dh") + ":" + params.get("dp");}
    else
    {   infacmdListLicensesCommand = env.get("INFA_HOME")
                + "/isp/bin/infacmd.sh ListLicenses -dn "  //this is line no 71, where exception is thrown
                + params.get("dn") + " -un " + params.get("un") + " -pd "
                + params.get("pd") + " -sdn " + params.get("sdn") + " -hp "
                + params.get("dh") + ":" + params.get("dp");}

    try {
        Process proc = Runtime.getRuntime().exec(infacmdListLicensesCommand);

        InputStream stdin = proc.getInputStream();
        InputStreamReader isr = new InputStreamReader(stdin);
        BufferedReader br = new BufferedReader(isr);
        String line = null;
        while ((line = br.readLine()) != null) {
            System.out.println(line);
            licenseList.add(line);
        }
        int exitVal = proc.waitFor();
        System.out.println("Process exit value is: " + exitVal);

    }catch (IOException io) {
        io.printStackTrace();
    }catch (InterruptedException ie) {
        ie.printStackTrace();
    } /* end catch */
return licenseList;
 }

异常 Exception in thread "main" groovy.lang.MissingMethodException: No signature of method: java.lang.String.positive() is applicable for argument types: () values: []
Possible solutions: notify(), tokenize(), size()
at org.codehaus.groovy.runtime.ScriptBytecodeAdapter.unwrap(ScriptBytecodeAdapter.java:55)
at org.codehaus.groovy.runtime.ScriptBytecodeAdapter.unaryPlus(ScriptBytecodeAdapter.java:764)
at infa9.LicenseInfo.fetchLicenses(Infa9LicensesUtil.groovy:71)


Answer 1

对...我在文件夹 ./test/ 中创建了这个 groovy 脚本 LicenseInfo.groovy:

package test

public class LicenseInfo {
  StringBuffer licenseInformation

  public LicenseInfo() {
    licenseInformation = new StringBuffer()
  }

  public void fetchLicenseInformation( Map<String,String> params, Map env ) {
    List<String> licenseList = fetchLicenses( params, env )
    println "List is $licenseList"
  }

  public List<String> fetchLicenses( Map<String,String> params, Map env ) {
    [ 'a', 'b', 'c' ]
  }
}

在当前文件夹./内，我创建了这个groovy脚本Test.groovy:

// Make some params...
def params = [ name:'tim', value:'text' ]

// Fake an env Map
def env = [ something:'whatever' ]

// Load the class from the script
def liClass = new GroovyClassLoader().parseClass( new File( 'test/LicenseInfo.groovy' ) )

// Run the method
liClass.newInstance().fetchLicenseInformation( params, env )

当我执行命令时

groovy Test.groovy

打印出来:

List is [a, b, c]

更新后编辑

您收到的正错误是由于 Groovy 解析器的工作方式造成的...在连接字符串时，您不能将 + 放在下一行的开头， + 必须在上一行后面(因为分号对于 groovy 中的行结尾是可选的，解析器无法知道您要添加到上一行) )

这会起作用:

if (System.getProperty("os.name").contains("Win")) {
  infacmdListLicensesCommand = env.get("INFA_HOME") + "/isp/bin/infacmd.bat ListLicenses -dn " +
                               params.get("dn") + " -un " + params.get("un") + " -pd " +
                               params.get("pd") + " -sdn " + params.get("sdn") + " -hp " +
                               params.get("dh") + ":" + params.get("dp")
}
else {
  infacmdListLicensesCommand = env.get("INFA_HOME") + "/isp/bin/infacmd.sh ListLicenses -dn " +
                               params.get("dn") + " -un " + params.get("un") + " -pd " +
                               params.get("pd") + " -sdn " + params.get("sdn") + " -hp " +
                               params.get("dh") + ":" + params.get("dp")
}

这将是做同样事情的更Groovy方式:

boolean isWindows = System.getProperty("os.name").contains("Win")
// Do it as a list of 3 items for formatting purposes
infacmdListLicensesCommand = [
  "$env.INFA_HOME/isp/bin/infacmd.${isWindows?'bat':'sh'} ListLicenses"
  "-dn $params.dn -un $params.un -pd $params.pd -sdn $params.sdn"
  "-hp $params.dh:$params.dp" ].join( ' ' ) // then join them back together

println infacmdListLicensesCommand // print it out to see it's the same as before