欢迎您访问程序员文章站本站旨在为大家提供分享程序员计算机编程知识!
您现在的位置是: 首页

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

程序员文章站 2022-03-09 14:07:07
...
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。