apache-wicket 学习笔记(一) maven依赖与集成spring

apache-wicket 学习笔记(一) maven依赖与集成spring

一) 官方网站发布的新消息wicket6.0已经发布了，上一个版本是1.5。可见官方直接升级了主版本号。

<dependency>
	<groupId>org.apache.wicket</groupId>
	<artifactId>wicket-core</artifactId>
	<version>6.0.0</version>
</dependency>
<dependency>
	<groupId>org.apache.wicket</groupId>
	<artifactId>wicket-extensions</artifactId>
	<version>6.0.0</version>
</dependency>
<dependency>
	<groupId>org.apache.wicket</groupId>
	<artifactId>wicket-auth-roles</artifactId>
	<version>6.0.0</version>
</dependency>
<dependency>
	<groupId>org.apache.wicket</groupId>
	<artifactId>wicket-spring</artifactId>
	<version>6.0.0</version>
</dependency>

spring嘛，在spring3.2还没有正式发布之前还是先用3.1或者2.5，个人觉得如果不用spring-mvc的话,2.5还是挺好用的。要加的依赖jar也只有一个。

<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring</artifactId>
    <version>2.5.6</version>
</dependency>

或者

<dependency>
	<groupId>org.springframework</groupId>
	<artifactId>spring-test</artifactId>
	<version>3.1.2.RELEASE</version>
	<scope>test</scope>
</dependency>
<dependency>
	<groupId>org.springframework</groupId>
	<artifactId>spring-context-support</artifactId>
	<version>3.1.2.RELEASE</version>
</dependency>
<dependency>
	<groupId>org.springframework</groupId>
	<artifactId>spring-web</artifactId>
	<version>3.1.2.RELEASE</version>
</dependency>
<dependency>
	<groupId>aopalliance</groupId>
	<artifactId>aopalliance</artifactId>
	<version>1.0</version>
</dependency>
<dependency>
	<groupId>org.aspectj</groupId>
	<artifactId>aspectjweaver</artifactId>
	<version>1.6.11</version>
</dependency>

二) 配置spring容器
在web.xml中用监听器，每个spring的web项目都要这么做。

<listener>
	<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<context-param>
	<param-name>contextConfigLocation</param-name>
	<param-value>classpath:spring-beans.xml</param-value>
</context-param>

三) wicket框架的核心组件是一个servlet
web.xml 被注释掉的部分在正式部署上线的时候一定要记得不注释符号去掉。

<servlet>
	<servlet-name>Application</servlet-name>
	<servlet-class>org.apache.wicket.protocol.http.WicketServlet</servlet-class>
	<init-param>
		<param-name>applicationFactoryClassName</param-name>
		<param-value>org.apache.wicket.spring.SpringWebApplicationFactory</param-value>
	</init-param>
	<init-param>
		<param-name>applicationBean</param-name>
		<param-value>wicketApplication</param-value>
	</init-param>
	<!--
	<init-param>
		<param-name>configuration</param-name>
		<param-value>DEPLOYMENT</param-value>
	</init-param>
	-->
	<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
	<servlet-name>Application</servlet-name>
	<url-pattern>/*</url-pattern>
</servlet-mapping>

四) wicketApplication Bean 要加入代码。

package com.ztgame.webapp.wicket;

import org.apache.wicket.Page;
import org.apache.wicket.protocol.http.WebApplication;
import org.apache.wicket.spring.injection.annot.SpringComponentInjector;
import org.springframework.stereotype.Component;

import com.ztgame.webapp.wicket.page.HelloWorldPage;

@Component("wicketApplication")
public class Application extends WebApplication {

	@Override
	protected void init() {
		super.init();
		super.getComponentInstantiationListeners().add(new SpringComponentInjector(this));
	}
	
	@Override
	public Class<? extends Page> getHomePage() {
		return HelloWorldPage.class;
	}

}

五) 在Page对象中注入业务层的Bean

package com.ztgame.webapp.wicket.page;

import org.apache.wicket.markup.html.WebPage;
import org.apache.wicket.markup.html.link.ExternalLink;
import org.apache.wicket.spring.injection.annot.SpringBean;

import com.ztgame.webapp.wicket.service.SomeService;

public class HelloWorldPage extends WebPage {

	private static final long serialVersionUID = -4345240865727174450L;
	
	@SpringBean
	private SomeService someService;

	public HelloWorldPage() {
		ExternalLink externalLink = new ExternalLink("externalLink", "http://yingzhuo.iteye.com", someService.getString());
		super.addOrReplace(externalLink);
	}

}

比较奇怪的是wicket做注入既没有使用JSR250的标注或者JSR330的标注，而是用了自己定义的一个标注。
另外，需要注意的是wicket与spring集成以后不可以通过构造方法注入，只能通过field或者property注入。