转发请注明出处
1.页面传值。
传值
前台
<s:form action="login1">//action 名字 需要在structs配置
用户<s:textfield name="user.userName" type="text"/>//传对象
<s:textfield name="user.password" key="pass" />//传对象
<s:textfield name="password" key="pass" />//传值
<s:submit key="login" />
</s:form>
配置文件
<?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.3//EN" "http://struts.apache.org/dtds/struts-2.3.dtd"> <struts> <constant name="struts.ognl.allowStaticMethodAccess" value="true"></constant> <package name="userManager" namespace="/" extends="struts-default"> <!-- //登录 --> <action name="login1" class="action.LoginAction" method="login"> <result name="success">/loginuser.jsp</result> <result name="loginout">/adetails.jsp</result> </action> <!-- //登出 --> <action name="loginout" class="action.LoginAction" method="loginout"> <result name="success">/login.jsp</result> <result name="loginout">/adetails.jsp</result> </action> </package> </struts>
后台类
import javax.servlet.http.HttpServletRequest; import org.apache.struts2.ServletActionContext; import bean.User; import com.opensymphony.xwork2.ActionSupport; public class LoginAction extends ActionSupport{ /** * */ private static final long serialVersionUID = 1L; private String userName; private String password; public String getUserName() { return userName; } public void setUserName(String userName) { this.userName = userName; } public String getPassword() { return password; } //与前台页面name="password" 一致 public void setPassword(String password) { this.password = password; }
// 此处用于传对象 private User user; public User getUser() { return user; } public void setUser(User user) { this.user = user; //structs 把对应的值放到对象，在这里获取 user.userName,user.password 在这里把对象赋值,下面才可以调用
} public String login(){ HttpServletRequest request = ServletActionContext.getRequest(); System.out.println("111"); System.out.print(user); request.getSession().setAttribute("username", user.getUserName()); request.getSession().setAttribute("user", user); System.out.println(user.getUserName()); return "success"; } public String loginout(){ HttpServletRequest request = ServletActionContext.getRequest(); request.getSession().setAttribute("username", ""); /* HttpServletRequest request = ServletActionContext.getRequest(); request.getSession().setAttribute("username", user.getUserName()); 或者 把Username 设置为空 */ return "success"; } }
前台页面
<%@taglib prefix="s" uri="/struts-tags"%> <body> <s:a href="loginout.action">登出 </s:a> 用户名：<s:property value="user.userName" /> 密码：<s:property value="user.password"/> <s:property value="password"/> 值： <br> 用struts标签： <s:property value="#session.username" /> <br> 用EL表达式：${session.username} <br> 用java代码：<%=session.getAttribute("username")%> <br> 对象 <br> 用struts标签： <s:property value="#session.user.userName" /> <br> 用EL表达式：${session.user.password} <br> 用java代码：<%=session.getAttribute("user")%>
此处还用到过滤器