<s:fielderror/>使用

<s:fielderror/>
        该标签主要用于在页面上输出在Action中设置的FieldError信息。用法如下所示:

//TestStruts2Tag.java
import com.opensymphony.xwork2.ActionSupport;
public class TestStruts2Tag extends ActionSupport {
    @Override
    
public String execute() throws Exception {
        
// TODO Auto-generated method stub
        return  SUCCESS;
    }


    @Override
    
public void validate() {
        
// TODO Auto-generated method stub
        this.addActionError("actionError!");
        
this.addActionMessage("actionMessage!");
        
this.addFieldError("field""fieldError");
        
this.addFieldError("field2""fieldError2");
    }

}
//index.jsp部分代码
<s:fielderror/>
   
<s:fielderror>
           
<s:param>field</s:param>
           
<s:param>field2</s:param>
   
</s:fielderror>
//struts.xml
<!DOCTYPE struts PUBLIC
    
"-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
    
"http://struts.apache.org/dtds/struts-2.0.dtd">

<struts>
    
<include file="struts-default.xml"/>
    
<package name="TestStruts2Tag" extends="struts-default">
        
<action name="testTag" class="TestStruts2Tag">
            
<result name="success">/index.jsp</result>
            
<result name="input">/index.jsp</result>
        
</action>
    
</package>
</struts>

        注:<s:fielderror />用于输出所有FieldError信息。
                <s:fielderror>
          <s:param>field</s:param>
          <s:param>field2</s:param>
      </s:fielderror>
                或
                <s:fielderror>
             <s:param value="%{'field'}" />
             <s:param value="%{'field2'}" />
       </s:fielderror>
                用于输出"field"和"field2"的信息。
            7、<s:actionerror/>
            用于输出ActionError信息。用法如下所示:

<s:actionerror/>

            8、用于输出ActionMessage信息。用法如下所示:

<s:actionmessage/>

            

posted @ 2012-09-01 11:37  西瓜霜  阅读(1556)  评论(0编辑  收藏  举报