BlogJava-探索与发现-随笔分类-webworkhttp://www.blogjava.net/zhaijianhui/category/13672.html研究java技术zh-cnFri, 02 Mar 2007 09:33:07 GMTFri, 02 Mar 2007 09:33:07 GMT60webwork使用spring ioc集成http://www.blogjava.net/zhaijianhui/archive/2006/08/03/61441.html蜘蛛蜘蛛Wed, 02 Aug 2006 23:29:00 GMThttp://www.blogjava.net/zhaijianhui/archive/2006/08/03/61441.htmlhttp://www.blogjava.net/zhaijianhui/comments/61441.htmlhttp://www.blogjava.net/zhaijianhui/archive/2006/08/03/61441.html#Feedback2http://www.blogjava.net/zhaijianhui/comments/commentRss/61441.htmlhttp://www.blogjava.net/zhaijianhui/services/trackbacks/61441.html 在WebWork 2.2.x 之后,它将直接内建支持spring ioc了,所以更加简单了,,
做个例子
第一步:在web-inf下建一个webwork.properties文件,
内容为
webwork.objectFactory = spring
第二步:也就是加载applicationContext.xml,可以采取前面前的两种之一,,这里采用后面那种
<listener>
  <listener-class>
   org.springframework.web.context.ContextLoaderListener
  </listener-class>
 </listener>
第三步:创建要装载的实例,在applicationContext.xml(采用监听的方式,记住默认的位置是在web-inf下面)
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" "http://www.springframework.org/dtd/spring-beans.dtd">

<beans default-autowire="autodetect"> <!--记注一定要加上-->
  <bean id="userManager" singleton="true" class="helloWorld.UserManager"/>
</beans>
第四步:在修改我原来的例子
HelloWorldAction.java
为
package helloWorld;
import com.opensymphony.xwork.ActionSupport;
public class HelloWorldAction extends ActionSupport{

    String greeting;
    UserManager userManager;
    public void setGreeting(String greeting) {
        this.greeting = greeting;
    }

    public String getGreeting() {
        return greeting;
    }
    public UserManager getUserManager() {
  return userManager;
 }

 public void setUserManager(UserManager userManager) {
  this.userManager = userManager;
 }

 public String execute() throws Exception {
  userManager.sayHello();
  System.out.println("after userManager.sayHello()");
        if (greeting.equals("") || greeting == null) {
            addFieldError("greeting", getText("greeting"));
            return ERROR;
        }
        return SUCCESS;
    }
}
而UserManager.java类如下
package helloWorld;
 public class UserManager {
 public UserManager()
 {
  System.out.println("create instance of UserManger");
 }
 public void sayHello()
 {
  System.out.println("hello zjh");
 }
}
再访问http://localhost:8080/WebWork/index.jsp提交后在tomcat console窗口打印出
hello zjh
after userManager.sayHello()



蜘蛛 2006-08-03 07:29 发表评论
]]>webwork 学习二(validation验证框架)http://www.blogjava.net/zhaijianhui/archive/2006/08/02/61406.html蜘蛛蜘蛛Wed, 02 Aug 2006 14:10:00 GMThttp://www.blogjava.net/zhaijianhui/archive/2006/08/02/61406.htmlhttp://www.blogjava.net/zhaijianhui/comments/61406.htmlhttp://www.blogjava.net/zhaijianhui/archive/2006/08/02/61406.html#Feedback0http://www.blogjava.net/zhaijianhui/comments/commentRss/61406.htmlhttp://www.blogjava.net/zhaijianhui/services/trackbacks/61406.html看一个例子:
SimpleAction-validation.xml 名字前缀要与类名相同，而且与之在同一目录下
<!DOCTYPE validators PUBLIC "-//OpenSymphony Group//XWork Validator 1.0//EN" "http://www.opensymphony.com/xwork/xwork-validator-1.0.dtd">
<validators>
    <field name="count">
        <field-validator type="required">
            <message>You must enter a value for count.</message>
        </field-validator>
        <field-validator type="int">
            <param name="min">0</param>
            <param name="max">5</param>
            <message>
    count must be between ${min} and ${max}, current value is ${count}.
     </message>
        </field-validator>
    </field>
</validators>
==
package helloWorld;
import com.opensymphony.xwork.ActionSupport;
import com.opensymphony.xwork.ValidationAware;
public class SimpleAction extends ActionSupport implements ValidationAware {
    private int count;
    public void setCount(int count) {
        this.count = count;
    }
    public int getCount() {
        return count;
    }
    public String doExecute() throws Exception {
   return SUCCESS;
    }
}
------
在xwork.xml里面添加
<interceptors>
 <interceptor name="validator" class="com.opensymphony.xwork.validator.ValidationInterceptor"/>
 </interceptors>
<action name="validation" class="helloWorld.SimpleAction">
   <result name="success" type="dispatcher">
    <param name="location">/simple_result.jsp</param>
   </result>
   <result name="error" type="dispatcher">
    <param name="location">/simple.jsp</param>
   </result>
   <!-- If you don't override execute(), you must do this: -->
   <result name="input" type="dispatcher">
    <param name="location">/simple.jsp</param>
   </result>
   <interceptor-ref name="validator" />
   <interceptor-ref name="debugStack" />
   <interceptor-ref name="defaultStack" />
   
  </action>
注意interceptor为多个时与servlet里面的filter一样按顺序依次传递,假若失败就为影响后面的程序运行效果.
还有两个jsp页面
simple_result.jsp
<%@ taglib prefix="ww" uri="webwork"%>
<html>
 <head>
  <title>WebWork Validation Example</title>
 </head>
 <body>
  <p>
   The count is
   <ww:property value="count" />
  </p>
  </form>
 </body>
</html>
--
simple.jsp
<%@ taglib prefix="ui" uri="webwork" %>
<html>
<head>
    <title>WebWork Validation Example</title>
</head>
<body>
<form action="validation.action" method="post">
<table>
     <ui:textfield label="Set the counter" name="count"/>
    <ui:submit value="'Submit'"/>
</table>
</form>
</body>
</html>
运行效果如下
count must be between 0 and 5, current value is 8.

下面为日期类型的验证
<field-validator type="date">
<param name="min">12/22/2002</param>
  <param name="max">12/25/2002</param>
  <message>The date must be between 12-22-2002 and 12-25-2002.</message>
</field-validator>
</field>
<field name="foo">
<field-validator type="int">
<param name="min">0</param>
<param name="max">100</param>
<message key="foo.range">Could not find foo.range!</message>
</field-validator>
</field>
</validators>



蜘蛛 2006-08-02 22:10 发表评论
]]>webwork学习一http://www.blogjava.net/zhaijianhui/archive/2006/08/02/61377.html蜘蛛蜘蛛Wed, 02 Aug 2006 11:02:00 GMThttp://www.blogjava.net/zhaijianhui/archive/2006/08/02/61377.htmlhttp://www.blogjava.net/zhaijianhui/comments/61377.htmlhttp://www.blogjava.net/zhaijianhui/archive/2006/08/02/61377.html#Feedback0http://www.blogjava.net/zhaijianhui/comments/commentRss/61377.htmlhttp://www.blogjava.net/zhaijianhui/services/trackbacks/61377.html 本地中文化网址

http://wiki.javascud.org/display/ww2cndoc/Home

在线文档

http://www.opensymphony.com/webwork/wikidocs

与 struts 的区别有实现国级化的时候， struts 的 message 只能出现 5 个动态的值

也就像下面的信息

Your {0} ticket(s) for flight {1} have been booked.

The total cost is {2}. Your confirmation number is {3}.

Your flight leaves at {4} and arrives at {5}

需要分成两段才能完成

<bean:message key="confirmation.msg1"

arg0="count" arg1="flightNumber" arg2="cost"/>

<bean:message key="confirmation.msg2"

arg0="confirmation" arg1="departure" arg2="arrival"/>

而 webwork 是无限制的，像上面的可以写成这样子

<ww:text name="confirmation.msg">

<ww:param value="count"/>

<ww:param value="flightNumber"/>

<ww:param value="cost"/>

<ww:param value="confirmation"/>

<ww:param value="departure"/>

<ww:param value="arrival"/>

</ww:text>

还有在web.xml里同指定webwork的tld所在位置

<taglib>

<taglib-uri>webwork</taglib-uri>

<taglib-location>
/WEB-INF/lib/webwork-2.1.7.jar

</taglib-location>

</taglib>
在很多书上都讲上面可行，可是我却报下面的错．．．换成下面那种方式就ok了

org.apache.jasper.JasperException: Unable to initialize TldLocationsCache: null
也可以指定webwork.tld所在的位置也可以，，如
/WEB-INF/webwork.tld(webwork.tld拷到这下面来).

一个简单的例子
 
import com.opensymphony.xwork.Action;
public class HelloWorldAction implements Action{
    String greeting;
    public String getGreeting() {
        return greeting;
    }
    public String execute() throws Exception {
        greeting = "Hello World!";
        return SUCCESS;
    }
}
实现的action接口里面只有一个方法
 
interface Action {
String execute() throws Exception;
}
greetings.jsp
<%@ taglib prefix="ww" uri="webwork" %>
<html>
<head>
    <title>First WebWork Example</title>
</head>
<body>
<p><ww:property value="greeting"/></p>
</body>
</html>
xwork.xml 放到就用的classpath下面(也就web-inf/classes下面)
<action name="hello" class="HelloWorldAction">
<result name="success" type="dispatcher">
<param name="location">/greetings.jsp</param>
</result>
<interceptor-ref name="debugStack"/>
<interceptor-ref name="defaultStack"/>
</action>
还有在web.xml里面加上webwork的一个加载类
<servlet>
        <servlet-name>action</servlet-name>
        <servlet-class>com.opensymphony.webwork.dispatcher.ServletDispatcher</servlet-class>
    </servlet>
    <servlet-mapping>
        <servlet-name>action</servlet-name>
        <url-pattern>*.action</url-pattern>
    </servlet-mapping>
ActionSupport
1:提供对错误信息的支持
• action and field specific errors
• field errors are automatically supported by views
– 2:国际化的支持
• 1 resource bundle per action
• pervasive UI support for retrieving messages
 --------------------------------------------------------------------------------
ActionSupport Example:
import com.opensymphony.xwork.ActionSupport;
public class HelloWorldAction extends ActionSupport{
    String greeting;
    public void setGreeting(String greeting) {
        this.greeting = greeting;
    }
    public String getGreeting() {
        return greeting;
    }
    public String execute() throws Exception {
        if (greeting.equals("") || greeting == null) {
            addFieldError("greeting", getText("greeting"));
            return ERROR;
        }
        return SUCCESS;
    }
}
这里的getText("greeting")的greeting要与HelloWorldAction.properties(放在与HelloWorldAction.class同级目录下面，名称也一样)里的greeting=Enter your greeting please相同
上面的set.get其实与struts当中的ActionFrom类似．．
<%@ page language="java" import="java.util.*" pageEncoding="gbk"%>
<%@ taglib prefix="ui" uri="webwork" %>
<html>
<head>
    <title>First WebWork Example</title>
</head>
<body>
<form action="hello.action" method="post">
<table>
    <ui:textfield label="欢迎语句" name="greeting"/>
    <ui:submit value="'Submit'"/>
</table>
</form>
</body>
</html>
这里的greeting要与HelloWorldActio.java里的属性一致
如出现错误会显示在当前页，
Enter your greeting please

如填上内容，就会相应的调用setGreeting()方法的．．
<%@ taglib prefix="ww" uri="webwork" %>
<html>
<head>
    <title>First WebWork Example</title>
</head>
<body>
<p><ww:property value="greeting"/></p>
</body>
</html>
把填的内容显示出来
在xwork.xml里的<action>
也相应的变成
<action name="hello" class="helloWorld.HelloWorldAction">
   <result name="success" type="dispatcher">
    <param name="location">/greetings.jsp</param>
   </result>
   <result name="error" type="dispatcher">
          <param name="location">/index.jsp</param>
            </result>
  </action>
------------------------------------------------------------
 
Model-Driven Actions vs. Field-Driven Actions
•
2 types of Actions possible:
(1)Field-Drivern上面的例子就是
(2)ModelDriven
package helloWorld;
public class Pet {
    private long id;
 private String name;
    public long getId() {
        return id;
    }
    public void setId(long id) {
        this.id = id;
    }
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
}
--
package helloWorld;
import com.opensymphony.xwork.*;
public class AddPetAction extends ActionSupport implements ModelDriven{
 Pet pet = new Pet();
    public Object getModel() {
        return pet;
    }
    protected void doValidation() {
        if (pet.getId() == 0) {
            addFieldError("id", "Please enter in an id number for you new Pet.");
        }
    }
    public String doExecute() throws Exception {
        if (hasErrors())
            return ERROR;
        return SUCCESS;
    }

}
需实现ModelDriven这个接口，它也只有一个方法
public Object getModel();
 在xwork.xml加上
<action name="addpet" class="helloWorld.AddPetAction">
   <result name="success" type="dispatcher">
    <param name="location">/petadded.jsp</param>
   </result>
   <result name="error" type="dispatcher">
    <param name="location">/addpet.jsp</param>
   </result>
   <interceptor-ref name="debugStack" />
   <interceptor-ref name="defaultStack" />
  </action>
还有两个页面分别用来添加和显示用的
<%@ page language="java" import="java.util.*" pageEncoding="ISO-8859-1"%>
<%@ taglib prefix="ui" uri="webwork" %>
<html>
<head>
    <title>First WebWork Example</title>
</head>
<body>
<form action="addpet.action" method="post">
<table>
    <ui:textfield label="Pet ID Number" name="id"/>
    <ui:textfield label="Name of Pet" name="name"/>
    <ui:submit value="'Submit'"/>
</table>
</form>
</body>
</html>
-------petadded.jsp
<%@ page language="java" import="java.util.*" pageEncoding="ISO-8859-1"%>
<%@ taglib prefix="ww" uri="webwork" %>
<html>
<head>
    <title>First WebWork Example</title>
</head>
<body>
<p>Added a pet with the following properties:</p>
<ul>
    <li>ID: <ww:property value="id"/></li>
    <li>Name: <ww:property value="name"/></li>
</ul>
</form>
</body>
</html>


蜘蛛 2006-08-02 19:02 发表评论
]]>