Apache Velocity 模板文件中出现意外错误

Question

我有一个 xml 包含我想用速度生成的类的描述，形式如下：

<Class name="name">
  <Attribute name="name" type="typeName"/>
  ...
  <Method name="name" type="typeName"/>
</Class>

模板代码为：

public class $class.Name implements NodeIface {

#foreach($att in $class.Attributes)
  private $att.Type $att.name;

  public $att.Type get$utility.firstToUpperCase($att.Name)() {
    return this.$att.Name;
  } 

  public void set$utility.firstToUpperCase($att.Name)($att.Type $att.Name) {
    this.$att.Name = $att.Name;
  }
#end

#foreach($mtd in $class.Methods)
  if($class.Name == "name") {
    public $mtd.Name() {
      this.$att.Name = new $att.Type(Constants.SERVER_PORT, classNameHandler.class); //here lies the error
    }

    @Override
       public $mtd.Type $mtd.Name() throws TException {
         TSocket $att.Name = new TSocket("localhost", Constants.SERVER_PORT);
         TBinaryProtocol $att.Name = new TBinaryProtocol($att.Name);
         managementClient = new ManagementService.Client($att.Name);
         this.setDispatcher(new OperationDispatcher($att.Name));
         arithmeticServerTransport.open();
         $att.Name.start();
                $att.Name = new $att.Type($att.Name);
        PortNegotiator negotiator = new PortNegotiator($att.Name);
        negotiator.negotiate($att.Type, $att.Name);
    }

    @Override
    public $mtd.Type $mtd.Name() {
        $att.Name.stop();
    }
  }
  else if ($class.Name == "GreetingsNode") {
    public $mtd.Name();
        this.$att.Name = new $att.Type((Constants.SERVER_PORT, GreetingsServiceHandler.class));
    }

    #Override
    public $mtd.Type $mtd.Name() throws TException {
        TSocket $att.Name = new TSocekt("localhost", Constants.SERVER_PORT);
        TBinaryProtocol $att.Name = new TBinaryProtocol($att.Name);
        $att.Name = new ManagementService.Client($att.Name);
        this.SetUser(new User($att.Name);
        this.setMessenger(new MessageDispatcher($att.Name));
        $att.Name.open()

        $att.Name = new $att.Type($att.Name);
        PortNegotiator negotiator = new PortNegotiator($att.Name);
        negotiator.negotiate($att.Type, $att.Name);
    }

    @Override
    public $mtd.Type $mtd.Name() {
      $att.Name.stop();
    }

#End

Eclipse 的速度文本编辑器告诉我此消息有错误："Encountered ");\r\n\t\t}\r\n\t\t\r\n\t\t@Override\r\n\t\t public“在Class.vm[第 23 行，第 86 列] 期待其中之一： “[” ... ”、“…… “）” ... ..."

这是什么意思？

Answer 1

在这种情况下，您需要使用 formal reference notation:

      this.$att.Name = new ${att.Type}(Constants.SERVER_PORT, classNameHandler.class);

否则 Velocity 解析器会认为您正在尝试调用 $att.Type 对象上的方法。

Apache Velocity 模板文件中出现意外错误

Unexpected error in Apache Velocity template file

java

templates

velocity