Struts2 action之间传值与跳转

最近在学习struts2关于action之间的跳转
后台代码：LoginAction.java

public class LoginAction extends ActionSupport{
	private String userName;
	private String password;
	public String getUserName() {
		return userName;
	}
	public void setUserName(String userName) {
		this.userName = userName;
	}
	
	public String getPassword() {
		return password;
	}
	public void setPassword(String password) {
		this.password = password;
	}
	public String login(){
		Map session1=ActionContext.getContext().getSession();
		session1.remove("name");
		if(userName.length()<6){
			return "failure";
		}
		System.out.println(userName+"  ll");
		if(password.length()>6){
		Map session=ActionContext.getContext().getSession();
		session.put("name", userName);
		HttpServletRequest request=ServletActionContext.getRequest();
		request.setAttribute("name", userName);}
		return "success";
		
	}
}

struts.xml配置：
方法一：redirectAction：

<action name="login" class="action.LoginAction">    
		<result name="success" type="redirectAction">
			<param name="actionName">show</param>
			<param name="userName">${userName}</param>
		</result>  
		</action>  
		<action name="show" class="action.ShowAction">    
		<result name="success">/success.jsp</result>
		</action>  

 
方法二：redirect：

<action name="login" class="action.LoginAction">    
		<result name="success" type="redirect">/show.action?userName=${userName}
		</result>  
		</action>  
		<action name="show" class="action.ShowAction">    
		<result name="success">/success.jsp</result>
		</action>