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Struts/Hibernate
struts傻瓜式学习(一天篇)
作者:未知 时间:2005-07-24 21:22 出处:JR 责编:chinaitpower
摘要:struts傻瓜式学习(一天篇)
作者:林佩雯
或许有人觉得struts不容易学,似乎里面的一些概念让未接触过的人迷惑,M
VC
1、M
VC
2、模式……我写这篇文章是想让从来没有接触过struts的人,能有个简单的入门指引,当然,
系统
地学习struts是必要的,里面有很多让人心醉的东东,那是后话了。
该案例包括首页,用户登陆、网站向导页面。就这么简单,没有深奥的struts概念,主要靠动手,然后用心体会~!@#$%^&
WEB Server用tomcat4。到
http://jakarta.apache.org
下载struts1.1,把zip
文件
释放到c:\struts,拷贝C:\struts\webapps\struts-example.war到c:\tomcat4\webapps中,启动tomcat,war包被释放为struts-example
文件
夹,删除war包,把struts-example
文件
夹更名为test。
一、把WEB-INF\web.xml改成:
action
org.apache.struts.action.ActionServlet
config
/WEB-INF/struts-config.xml
1
action
*.cool
index.jsp
二、把test\WEB-INF\ struts-config.xml改成:
三、增加一个FormBean,类路径为test.UserForm,以下是这个类的内容:
package test;
import org.apache.struts.action.ActionForm;
public class UserForm extends ActionForm
{
private
[url= target=_blank http: www.chinaitpower.com Dev Programme Java index.html?>java/lang/String.
[url=]java[/url]
.html]String[/url]
name="lpw";//用户名
private
[url= target=_blank http: www.chinaitpower.com Dev Programme Java index.html?>java/lang/String.
[url=]java[/url]
.html]String[/url]
ps="1111";//密码
public UserForm(){}
public void setName(
[url= target=_blank http: www.chinaitpower.com Dev Programme Java index.html?>java/lang/String.
[url=]java[/url]
.html]String[/url]
s) {name=s;}
public
[url= target=_blank http: www.chinaitpower.com Dev Programme Java index.html?>java/lang/String.
[url=]java[/url]
.html]String[/url]
getName() {return name;}
public void setPs(
[url= target=_blank http: www.chinaitpower.com Dev Programme Java index.html?>java/lang/String.
[url=]java[/url]
.html]String[/url]
s) {ps=s;}
public
[url= target=_blank http: www.chinaitpower.com Dev Programme Java index.html?>java/lang/String.
[url=]java[/url]
.html]String[/url]
getPs() {return ps;}
}
四、增加一个Action的子类,类路径为test. RegistAction,以下是这个类的内容:
package test;
import
java
.lang.reflect.
[url= target=_blank http: www.chinaitpower.com Dev Programme Java index.html?>java/lang/reflect/InvocationTargetException.
[url=]java[/url]
.html]InvocationTargetException[/url]
;
import
java
.util.
[url= target=_blank http: www.chinaitpower.com Dev Programme Java index.html?>java/util/Locale.
[url=]java[/url]
.html]Locale[/url]
;
import
java
x.servlet.
[url= target=_blank http: www.chinaitpower.com Dev Programme Java index.html?>javax/servlet/ServletException.
[url=]java[/url]
.html]ServletException[/url]
;
import
java
x.servlet.http.
[url= target=_blank http: www.chinaitpower.com Dev Programme Java index.html?>javax/servlet/http/HttpServletRequest.
[url=]java[/url]
.html]HttpServletRequest[/url]
;
import
java
x.servlet.http.
[url= target=_blank http: www.chinaitpower.com Dev Programme Java index.html?>javax/servlet/http/HttpSession.
[url=]java[/url]
.html]HttpSession[/url]
;
import
java
x.servlet.http.
[url= target=_blank http: www.chinaitpower.com Dev Programme Java index.html?>javax/servlet/http/HttpServletResponse.
[url=]java[/url]
.html]HttpServletResponse[/url]
;
import org.apache.struts.action.Action;
import org.apache.struts.action.ActionError;
import org.apache.struts.action.ActionErrors;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.util.MessageResources;
import test.UserForm;
public final class RegistAction extends Action
{
public ActionForward execute(ActionMapping mapping,ActionForm form,
[url= target=_blank http: www.chinaitpower.com Dev Programme Java index.html?>javax/servlet/http/HttpServletRequest.
[url=]java[/url]
.html]HttpServletRequest[/url]
request,
[url= target=_blank http: www.chinaitpower.com Dev Programme Java index.html?>javax/servlet/http/HttpServletResponse.
[url=]java[/url]
.html]HttpServletResponse[/url]
response) throws
[url= target=_blank http: www.chinaitpower.com Dev Programme Java index.html?>java/lang/Exception.
[url=]java[/url]
.html]Exception[/url]
{
[url= target=_blank http: www.chinaitpower.com Dev Programme Java index.html?>java/util/Locale.
[url=]java[/url]
.html]Locale[/url]
locale = getLocale(request);
MessageResources messages = getResources(request);
[url= target=_blank http: www.chinaitpower.com Dev Programme Java index.html?>javax/servlet/http/HttpSession.
[url=]java[/url]
.html]HttpSession[/url]
session = request.getSession();
UserForm userform = (UserForm) form;
//此处可以调用其他类来执行
数据库
写入或其他逻辑判断
// 如果UserForm传来的参数name的值为默认的lpw,将forward到failed,
// 该名称将到struts-config.xml的中寻找映射的url地址
// (可以是绝对路径,也可以是相对路径),对于本例,是转到failed.cool,
// 还记得吗?后缀为cool的请求全部到action-mappings中寻找
// 对应的action处理,最终目录是wuwu.jsp*/
if( "lpw".equals(userform.getName()) ) return (mapping.findForward("failed"));
else return (mapping.findForward("regist"));
}
}
五、以下所有新增或修改的页面相当于struts的View部分,把首页index.jsp改成:
站点导航
用户:
密码:
六、增加hello.jsp,用于站点导航:
site mapThe following is content filling by reader
七、增加wuwu.jsp,当没有新用户登陆时,将转到这个页面:
现有用户:
密码:
没有得到新的用户!55555~~~~~
八、增加regist.jsp,当有新用户登陆时,将转到这个页面:
新用户帐号:
密码:
九、启动tomcat4,浏览器中键入http://localhost:8080/test/index.jsp,操作一下,就可以看到结果,并初步理解struts的M、V、C各部分的协同工作原理,当然这是作者的良好意愿,如果读者看得一头雾水,欢迎指出错误在哪里 :)
[ 收藏此页到
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