IntelliJ IDEA 搭建一个比较完整的网站实例 13

登录成功之后，前台页面需要获取到用户的账户信息，这里设置的数据库中的用户账户过于简单，因此只将用户名作为参数传递到前台。

1.修改action层的代码，在返回SUCCESS前，将用户名放进session中。LoginAction的代码：

package com.kay.struts2.Action;

import com.opensymphony.xwork2.ActionContext;
import com.opensymphony.xwork2.ActionSupport;
import com.yiibai.output.OutputHelper;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

import java.util.Map;

public class LoginAction extends ActionSupport {
    private String uname;
    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 getUname() {
        return uname;
    }

    public void setUname(String uname) {
        this.uname = uname;
    }

    @Override
    public String execute() throws Exception{
        ApplicationContext context = new ClassPathXmlApplicationContext(new String[]{"spring-config.xml"});
        OutputHelper output = (OutputHelper)context.getBean("OutputHelper");
        String str = output.generateOutput(this.getUname());
        if(str=="SUCCESS")
            return SUCCESS;
        else
            return LOGIN;
    }
    public String login(){
        String username = this.getUsername();
        String password = this.getPassword();
        System.out.println(username);
        ApplicationContext context = new ClassPathXmlApplicationContext(new String[]{"spring-config.xml"});
        OutputHelper output = (OutputHelper)context.getBean("OutputHelper");
        if(output.login(username,password)){
            ActionContext actionContext = ActionContext.getContext();
            Map session = actionContext.getSession();
            session.put("userName",username);
            return SUCCESS;
        }else {
            return ERROR;
        }
    }
}

接下来，在loginSuccess.jsp页面中获取到session中的用户名，并添加主页的超链接：

<%@ page contentType="text/html;charset=UTF-8" language="java" %>


    


hello <%=request.getSession().getAttribute("userName")%> !


主页

主页也同样获取session：

<%@ page contentType="text/html;charset=UTF-8" language="java" %>

  
    
  
  
  <% if(request.getSession().getAttribute("userName")==(null)){%>
  <%
  }else {%>
  <%=request.getSession().getAttribute("userName")%>
  <%}%>
  

    
    
  
  

  

    
  
  

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运行tomcat:

登录后：

主页：