Struts2学习3——数据绑定及获取Session

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接收表单参数

1. 在Action中定义表单属性

<form action="login" method="post" name="form">User：<s:textfield name="username"/><br/>Password：<s:password name="password"/><br/><s:submit value="提交"/> </form>

在Action中定义

    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;    }

2. 表单参数封装成类

<form action="login" method="post" name="form"> User：<s:textfield name="user.username"/><br/>Password：<s:password name=" user.password"/><br/><s:submit value="提交"/> </form>

Model类

public class test {    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;    }}

在Action中定义Model对象

private User user;public getUser(){   return user;}public void setUser(User user){   this.user=user;}

3. 实现ModelDriven接口

表单及Model、Action中User定义与上面相同，对Action类：

public class loginAction extends ActionSupport implements ModelDriven<User>{   User user=new User();   ...   public Users getModel()   {      return user;   }}

在View显示Action中的变量

在Action定义

    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;    }

然后在jsp中，

 <%@ taglib prefix="s" uri="/struts-tags" %> <s:property value="username" /> 或String username = (String) request.getAttribute("username");

获取Session

方法1

在前一篇文章已有介绍，这里简要再记录一下

    private RbacAdmins rbacAdmin;    public RbacAdmins getRbacAdmin() {        return rbacAdmin;    }    public void setRbacAdmin(RbacAdmins rbacAdmin) {        this.rbacAdmin = rbacAdmin;    }    @Override    public String execute() throws Exception {        ActionContext actionContext = ActionContext.getContext();        Map session = actionContext.getSession();        rbacAdmin =(RbacAdmins)session.get(Session.ADMIN);              return "APP";    }

方法2(代码未测试)

    import java.util.Map;    import org.apache.struts2.interceptor.SessionAware;    import com.opensymphony.xwork2.ActionSupport;    public class SessionTest1Action extends ActionSupport implements SessionAware {    private Map session;    public void setSession（Map session） {        this.session = session;    }    public String execute（） {        this.session.put（"USER_NAME", "Test User 1"）；        return SUCCESS;    }}

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