Struts2組態Action類的靜態引數

為動作定義靜態引數

struts.xml

<struts>

   <constant name="struts.custom.i18n.resources" value="global" />
   <constant name="struts.devMode" value="true" />
	
   <package name="default" namespace="/" extends="struts-default">
	<action name="locale" class="com.tw511.common.action.LocaleAction">
		<result name="SUCCESS">pages/welcome.jsp</result>
		<param name="EnglishParam">English</param>
    	        <param name="ChineseParam">Chinese</param>
     	        <param name="FranceParam">France</param>
	</action>
   </package>	
</struts>

從動作獲取靜態引數

要從struts.xml中獲取靜態引數值，Action類必須實現引數化Parameterizable介面。動作的靜態引數是由staticParams攔截，其中包括在預設堆疊控制

1. Map屬性

//...
import com.opensymphony.xwork2.config.entities.Parameterizable;

public class LocaleAction implements Parameterizable{

	Map<String, String> params;
	//...
	public void setParams(Map<String, String> params) {
		this.params = params;
	}
}

2. JavaBean 屬性

在動作類的初始化，如果建立了getter和setter方法得當，staticParams攔截器將設定預先定義的引數值，以對應於該「引數」的每JavaBean屬性。

//...
import com.opensymphony.xwork2.config.entities.Parameterizable;

public class LocaleAction implements Parameterizable{

	String englishParam;
	String chineseParam;
	String franceParam;
	
	public String getEnglishParam() {
		return englishParam;
	}

	public void setEnglishParam(String englishParam) {
		this.englishParam = englishParam;
	}

	public String getChineseParam() {
		return chineseParam;
	}

	public void setChineseParam(String chineseParam) {
		this.chineseParam = chineseParam;
	}

	public String getFranceParam() {
		return franceParam;
	}

	public void setFranceParam(String franceParam) {
		this.franceParam = franceParam;
	}
    //...
}