ZK 前端框架GenericForwardComposer和SelectorComposer的區別

1、繼承了GenericForwardCompose的類，不需要@Wire就可以調用組件；而繼承了SelectorComposer需要@Wire才能調用組件，比如獲得它的值，並且需要給它的事件添加監聽@Listen；如下所示的一段代碼：

public class TestGenericComposer extends SelectorComposer<Component>{
	
	/**
	 * 
	 */
	private static final long serialVersionUID = 8383213293757822132L;
	
	@Wire
	private Textbox t1;
	@Wire
	private Textbox t2;
	
	@Wire
	private Textbox t3;
	
	@Listen("onClick = #bt")
	public void onClick(){

import org.zkoss.zk.ui.Component;
import org.zkoss.zk.ui.util.GenericForwardComposer;
import org.zkoss.zul.Textbox;

public class TestGenericComposer extends GenericForwardComposer<Component> {

	/**
	 * 
	 */
	private static final long serialVersionUID = -8084302987575367204L;
	
	private Textbox tb1;
	private Textbox tb2;
	private Textbox tb3;
	
	
	public void onClick$bt(){
		System.out.println(tb1.getValue()+"==="+tb2.getValue()+"==="+tb3.getValue()+"===");
	}

zul頁面：

至於爲什麼，我應該是GenericForwardComposer所繼承的父類(GenericAutowireComposer.java)裏面有這麼一個構造方法應該可以解釋爲什麼了，如下所示：

這段註釋表明了：構造函數與自定義分隔符。分離器用於單獨的組件ID和事件名稱。默認情況下,它是“$”。Groovy和其他環境,“$”不適用,您可以指定“_”。

protected GenericAutowireComposer() {
		this('$');
	}
	/** Constructor with a custom separator.
	 * The separator is used to separate the component ID and event name.
	 * By default, it is '$'. For Groovy and other environment that '$'
	 * is not applicable, you can specify '_'.
	 * <p>It is a shortcut of <code>GenericAutowireComposer('$',
	 * !"true".equals(Library.getProperty("org.zkoss.zk.ui.composer.autowire.zscript")),
	 * !"true".equals(Library.getProperty("org.zkoss.zk.ui.composer.autowire.xel")))</code>.
	 * <p>In other words, whether to ignore variables defined in ZSCRIPT and XEL depends
	 * on the library variables called <code>org.zkoss.zk.ui.composer.autowire.zscript</code>
	 * and <code>org.zkoss.zk.ui.composer.autowire.xel</code>.
	 * Furthermore, if not specified, their values are default to <b>false</b>, i.e., 
	 * they shall <t>not</t> be wired (i.e., shall be ignored)
	 * <p>If you want to control whether to wire ZSCRIPT's or XEL's variable
	 * explicitly, you could use
	 * {@link #GenericAutowireComposer(char,boolean,boolean)} instead.
	 *
	 * <h2>Version Difference</h2>
	 * <p>ZK 5.0 and earlier, this constructor is the same as
	 * <code>GenericAutowireComposer('$', false, false)</code><br/>
	 * In other words, it is default to wire (i.e., shall <i>not</i> ignore).
	 * @param separator the separator used to separate the component ID and event name.
	 * Refer to {@link #_separator} for details.
	 * @since 3.6.0
	 */
	protected GenericAutowireComposer(char separator) {
		initIgnores();
		_separator = separator;
		_ignoreZScript = _sIgnoreZScript;
		_ignoreXel = _sIgnoreXel;
	}

以上所測是本人臆測，