Seasar2入门（一）

Seasar2（S2Container），简单的说，是比Spring一样提供DI功能的框架，但比Sping轻量级。

 

比理论来说本人更喜欢实际操作和调试，接下来，就让我们开始Seasar2之旅吧。

首先，先下载和安装JDK,Eclipse，Tomcat

JDK 下载：http://www.oracle.com/technetwork/java/javase/downloads/index-jsp-138363.html 下载JDK 6 Update 22

Eclipse 下载：http://www.eclipse.org/downloads/ 下载Eclipse IDE for Java EE Developers

Tomcat 下载：http://tomcat.apache.org/download-60.cgi 下载32-bit Windows zip

接下来，下载Seasar2（S2Container）

http://s2container.seasar.org/2.4/ja/downloads.html 下载S2Container

 

把下载后的S2Container解压缩,主要关注下2个文件夹

「lib」文件夹：包含S2Container以及相关库。

「doc」文件夹：S2Container的相关文档。

 

接下来，开始用S2Container开发。

使用Eclipse新建项目，「File」⇒「New」⇒「Dynamic Web Project」，项目名叫“seasar”。

  

把下面jar包拷贝到lib目录下，并加入到Build Path里。

（1）使用S2Container必须的文件

s2-framework-2.4.42.jar

commons-logging-1.1.1.jar

javassist-3.4.ga.jar

ognl-2.6.9-patch-20090427.jar

（2）使用S2AOP必须的文件

aopalliance-1.0.jar

（3）使用Java EE服务器以外的Servlet容器（比如Tomcat)时必须的文件

geronimo-jta_1.1_spec-1.0.jar

 

新建Bean类(DataBean.java)

package jp.seasar.framework;import java.util.Date;public class DataBean {private String title;private java.util.Date time;private String memo;public DataBean() {}public DataBean(String title, Date time, String memo) {this.title = title;this.time = time;this.memo = memo;}public String getTitle() {return title;}public void setTitle(String title) {this.title = title;}public java.util.Date getTime() {return time;}public void setTime(java.util.Date time) {this.time = time;}public String getMemo() {return memo;}public void setMemo(String memo) {this.memo = memo;}@Overridepublic String toString() {return "Title:" + title + ",Date:" + time + ",Memo:" + memo;}}

 

新建管理Data的接口(TestBean.java)

package jp.seasar.framework;import java.util.ArrayList;public interface TestBean {public java.util.ArrayList<DataBean> getDatalist();public void setDatalist(ArrayList<DataBean> list);public void addData(String title, java.util.Date time, String memo);public void removeData(int i);public String toString();}

 

新建管理Data的实现类 

 package jp.seasar.framework;import java.util.ArrayList;import java.util.Date;public class TestBeanImpl implements TestBean {private ArrayList<DataBean> datalist;public TestBeanImpl() {datalist = new ArrayList<DataBean>();}@Overridepublic ArrayList<DataBean> getDatalist() {return datalist;}@Overridepublic void setDatalist(ArrayList<DataBean> list) {datalist = list;}@Overridepublic void addData(String title, Date time, String memo) {datalist.add(new DataBean(title, time, memo));}@Overridepublic void removeData(int i) {datalist.remove(i);}@Overridepublic String toString() {String result = "<table border=/"1/">";for (DataBean bean : datalist) {result += "<tr>";result += "<td>" + bean.getTitle() + "</td>";result += "<td>" + bean.getTime().toString() + "</td>";result += "<td>" + bean.getMemo() + "</td>";result += "</tr>";}result += "</table>";return result;}}

 

 新建S2Container的配置文件（app.dicon）

 <?xml version="1.0" encoding="UTF-8"?><!DOCTYPE components PUBLIC "-//SEASAR//DTD S2Container 2.4//EN""http://www.seasar.org/dtd/components24.dtd"><components><component name="mybean" class="jp.seasar.framework.TestBeanImpl" /></components>

  

新建Servlet(Servlet1.java)

package jp.seasar.framework;import java.io.IOException;import javax.servlet.ServletException;import javax.servlet.annotation.WebServlet;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import org.seasar.framework.container.S2Container;import org.seasar.framework.container.factory.S2ContainerFactory;@WebServlet("/serv1")public class Servlet1 extends HttpServlet {private static final long serialVersionUID = 1L;@Overrideprotected void doGet(HttpServletRequest req, HttpServletResponse resp)throws ServletException, IOException {S2Container container = S2ContainerFactory.create("app.dicon");container.init();TestBeanImpl bean = (TestBeanImpl) container.getComponent("mybean");bean.addData("1", new java.util.Date(), "This is test.");bean.addData("2", new java.util.Date(), "这是测试。");resp.setContentType("text/html; charset=UTF-8");resp.setCharacterEncoding("UTF-8");java.io.PrintWriter out = resp.getWriter();out.print("<html><head></head>");out.print("<body>");out.print("<h5>");out.print(bean.toString());out.print("</h5>");out.print("</body></html>");}}

 

配置web.xml

<?xml version="1.0" encoding="UTF-8"?><web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5"> <display-name>seasar2</display-name> <servlet> <servlet-name>serv1</servlet-name> <servlet-class>jp.seasar.framework.Servlet1</servlet-class> </servlet> <servlet-mapping> <servlet-name>serv1</servlet-name> <url-pattern>/serv1</url-pattern> </servlet-mapping> <welcome-file-list> <welcome-file>index.html</welcome-file> </welcome-file-list></web-app>

 

编译发布到Tomcat

 

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本文没有写完，还需要修改，不明之处，还请谅解。