webwork 学习笔记

xmx0632

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Webwork Java JSP Web XML

记一个使用iterator标签的例子

/*
 * Created on 2004-8-2
 * author:xmx
 */
package demo.tagdemo;


import com.opensymphony.xwork.Action;
import java.util.List;
import java.util.ArrayList;

public class TagDemoAction implements Action {
	//跟需要在页面输入的信息相对应
	private User user= new User();;
	private String name1;
	private int int1;
	private float float1;
	private double double1;
	private String []strs;

	public User getUser();{
		return this.user;
	}
	
	public String execute();{
		
		System.out.println("Start execute 。。。。。。。。。。。。。");;
		System.out.println("User="+user);;
		//在这里调用用户注册的业务逻辑，比如：将注册信息存储到数据库
		System.out.println("Name1="+name1);;
		System.out.println("Int1="+int1);;
		return SUCCESS;
	}
	
    public String[] getProperties(); {
        String []back=new String[]{"1","2","3","4","5","6"}; 
        return back; 
    }
	/**
	 * @return
	 */
	public String getName1(); {
		return name1;
	}

	/**
	 * @param string
	 */
	public void setName1(String string); {
		name1 = string;
	}

	/**
	 * @return
	 */
	public int getInt1(); {
		return int1;
	}

	/**
	 * @param i
	 */
	public void setInt1(int i); {
		int1 = i;
	}

	/**
	 * @return
	 */
	public double getDouble1(); {
		return double1;
	}

	/**
	 * @return
	 */
	public float getFloat1(); {
		return float1;
	}

	/**
	 * 只要在页面显示，设置getXXX();，并且返回对应的数据就可以了
	 * 数据从service中取到
	 * @return
	 */
	public String[] getStrs(); {
		String []back=new String[]{"11","22","33","44","55","66"};
				
		return back;
	}
/**
 * List也可以在页面用iterator显示
 * @return
 */
	public List getList(); {
		List back=new ArrayList();;
		back.add("test1");;
		back.add("test21");;		
				
		return back;
	}
	
	public List getUserList(); {
			List back=new ArrayList();;
			for(int i=0;i<5;i++);{
				User tmp=new User();;
				tmp.setUsername("UserName"+i);;
				back.add(tmp);;
			}
				
			return back;
	}
	
	
	/**
	 * @param d
	 */
	public void setDouble1(double d); {
		double1 = d;
	}

	/**
	 * @param f
	 */
	public void setFloat1(float f); {
		float1 = f;
	}

	/**
	 * @param strings
	 */
	public void setStrs(String[] strings); {
		strs = strings;
	}

}

input.jsp

<%@ page language="java" pageEncoding="GBK" %>


<html>
<head><title>Register Example</title></head>
<body>
<table border=0 width=97%>
<tr><td align="left">
	<form name="register" action="tagdemo.action" method="post">
		Username:<input type="text" name="user.username"><br>
		Password:<input type="text" name="user.password"><br>
		Email:<input type="text" name="user.email"><br>
		Age:<input type="text" name="user.age"><br>
		Name1:<input type="text" name="name1"><br>
		Int1:<input type="text" name="int1"><br>
		Float1:<input type="text" name="float1"><br>
		Double1:<input type="text" name="double1"><br>					
		<input type="submit" name="Submit"><br>	
	</form>
</td></tr>
</table>
</body>
</html>

show.jsp

<%@ page language="java" pageEncoding="GBK" %>
<%@ taglib prefix="ww" uri="/WEB-INF/taglib/webwork.tld" %>
<html>
<head>
    <title>First WebWork Example---tag-iterator</title>
</head>
<body>
<p>
TagDemoAction.java
<hr>

<ww:iterator value="properties" status="index"> 
        <ww:property /> 
        count = 
        <ww:property value="#index.count"/> 
        isfirst = 
        <ww:property value="#index.first"/> 
        islast = 
        <ww:property value="#index.last"/> 
        index = 
        <ww:property value="#index.index"/> 
        iseven = 
        <ww:property value="#index.even"/> 
        isodd = 
        <ww:property value="#index.odd"/> 
        modulus=
        <ww:property value="#index.modulus"/> 
        <ww:if test="#index.modulus(2); == 0">两个了<br /> </ww:if>
  <br />
        
        <p> 
</ww:iterator>

<hr>
strs:<br>
<ww:iterator value="strs" status="index"> 
        <ww:property /> 
        <ww:if test="#index.modulus(2); == 0">两个了<br /> </ww:if>
  <br />
</ww:iterator>

<hr>
list:<br>
<ww:iterator value="list" status="index"> 
        <ww:property /> 
        <ww:if test="#index.modulus(2); == 0">两个了<br /> </ww:if>
  <br />
</ww:iterator>
<hr>
UserList:<br>
<ww:iterator value="userList" status="index"> 
		username[<ww:property value="#index.count"/>]:<ww:property value="username"/> ___
        <ww:property /> 
        <ww:if test="#index.modulus(2); == 0">两个了<br /> </ww:if>
  <br />
</ww:iterator>



常量显示（不用import）:
TEST = 
<ww:property value="@demo.Constants@TEST"/>
<hr>
if。。。else。。。<br>
<ww:if test="true == false">
   <b>if: Failures</b>
</ww:if>

<ww:elseIf test="true == false">
   <b>elseIf: Failure</b>
</ww:elseIf>

<ww:elseIf test="true == true">
   <b>elseIf: Success</b>
</ww:elseIf>


<hr>
<ww:if test="1<0">
	<b>1<0</b>
</ww:if>

<ww:else>
   <b>else: 1>=0</b>
</ww:else>
<hr>

<br>
username:<ww:property value="user.username"/>
,password:<ww:property value="user.password"/>
,email:<ww:property value="user.email"/>
,age:<ww:property value="user.age"/>
,name1:<ww:property value="name1"/>
,int1:<ww:property value="int1"/>
,float1:<ww:property value="float1"/>
,double1:<ww:property value="double1"/>
<hr>
<input type="button" name="back" value="back" onclick="javascript:window.history.back();;">

</p>
</body>
</html>

xwork.xml片断

        <interceptors>
            <interceptor-stack name="defaultComponentStack">
                <interceptor-ref name="component"/>
                <interceptor-ref name="defaultStack"/>
            </interceptor-stack>
            
            <interceptor-stack name="standard-interceptors">
				<interceptor-ref name="static-params"/>
				<interceptor-ref name="params"/>
				<interceptor-ref name="conversionError"/>
			</interceptor-stack>
        </interceptors>

        <default-interceptor-ref name="standard-interceptors"/>



		<!-- tag demo -->
		<action name="tagdemo" class="demo.tagdemo.TagDemoAction">
            <result name="success" type="dispatcher">
                <param name="location">/web/tag_iterator.jsp</param>
            </result>
            <result name="error" type="dispatcher">
                <param name="location">/web/fail.jsp</param>
            </result>
            <result name="input" type="dispatcher">
                <param name="location">/web/tag_iterator.jsp</param>
            </result>
            
            <interceptor-ref name="standard-interceptors"/>     
        </action>

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