一：编写界面
login.jsp
<body>
<h1>用户登录</h1>
<form action="/dispatchAction/loginandLoginout.do?flag=userLogin" method="post">
u:<input type="text" name="name"/><br/>
p:<input type="password" name="password"/><br/>
<input type="submit" value="login"/>
</form>
</body>
ok.jsp
<body>
<h1>登陆成功</h1>
<a href="/dispatchAction/loginandLoginout.do?flag=userLogout1">退出登录方式1</a><br/>
<a href="/dispatchAction/loginandLoginout.do?flag=userLogout2">退出登录方式2</a><br/>
</body>
二：编写userForm表单
public class UserForm extends ActionForm {
private String name;
private String password;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
}
三：编写DispatchAction跳转方法
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.actions.DispatchAction;
import com.cloud.struts.form.UserForm;
public class LoginandLoginoutAction extends DispatchAction {
//响应登录请求请求
public ActionForward userLogin(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response) {
UserForm userForm=(UserForm)form;
if("123".equals(userForm.getPassword())){
return mapping.findForward("loginok");
}else{
return mapping.findForward("gologin");
}
}
//该函数用于响应注销请求
public ActionForward userLogout1(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response) {
//把用户的session清空
System.out.println("userLogout1");
request.getSession().invalidate();
return mapping.findForward("gologin");
}
public ActionForward userLogout2(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response) {
//把用户的session清空
System.out.println("userLogout2");
request.getSession().invalidate();
return mapping.findForward("gologin");
}
}
四：画出跳转图解
对应的struts-config.xml代码
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts-config PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 1.3//EN" "http://struts.apache.org/dtds/struts-config_1_3.dtd">
<struts-config>
<form-beans >
<form-bean name="userForm" type="com.yourcompany.struts.form.UserForm" />
</form-beans>
<global-exceptions />
<global-forwards />
<action-mappings >
<!-- parameter="flag" 用于区分用户的不同请求 -->
<action
attribute="userForm"
input="/WEB-INF/ok.jsp"
name="userForm"
parameter="flag"
path="/loginAndLogout"
scope="request"
type="com.yourcompany.struts.action.LoginAndLogoutAction"
validate="false"
cancellable="true">
<forward name="loginok" path="/WEB-INF/ok.jsp" />
<forward name="gologin" path="/WEB-INF/login.jsp" />
</action>
</action-mappings>
<message-resources parameter="com.yourcompany.struts.ApplicationResources" />
</struts-config>
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