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; } @Override public 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 getDatalist(); public void setDatalist(ArrayList 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 datalist; public TestBeanImpl() { datalist = new ArrayList(); } @Override public ArrayList getDatalist() { return datalist; } @Override public void setDatalist(ArrayList list) { datalist = list; } @Override public void addData(String title, Date time, String memo) { datalist.add(new DataBean(title, time, memo)); } @Override public void removeData(int i) { datalist.remove(i); } @Override public String toString() { String result = "

"; for (DataBean bean : datalist) { result += ""; result += ""; result += ""; result += ""; result += ""; } result += "

" + bean.getTitle() + "

" + bean.getTime().toString() + "

" + bean.getMemo() + "

"; return result; } }

 

 新建S2Container的配置文件（app.dicon）

 

  

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; @Override protected 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(""); out.print(""); out.print("

"); out.print(bean.toString()); out.print("

"); out.print(""); } }

 

配置web.xml

seasar2 serv1 jp.seasar.framework.Servlet1 serv1 /serv1 index.html

 

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。