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Struts2中Action取得表单数据的几种方法

Struts2中Action取得表单数据的几种方法

 
Struts2中Action获得表单数据的几种方法
struts2 Action获取表单传值

1.通过属性驱动式
JSP:
<form action="sys/login.action" method="post">  <input type="text" name="username">  <input type="submit" value="submit"></form>

Action:直接通过get、set方法获取。

public class sysAction extends ActionSupport{    private String username;    public String login() throws Exception {        System.out.println(username);        return SUCCESS;    }    public String getUsername() {        return username;    }    public void setUsername(String username) {        this.username= username;    }}

 

2.模型驱动方式,必须要实现ModelDriven<T>接口。对于要传入多个model第二种方式不方便
JSP:
<form action="sys/login.action" method="post">  <input type="text" name="username">  <input type="submit" value="submit"></form>

Action:必须实现getModel() 方法

public class sysAction extends ActionSupport implements ModelDriven<User>{    private User user;    public String login() throws Exception {        System.out.println(getModel().getUsername());        return SUCCESS;    }    public User getModel() {        if (null == user) {            return user = new User();        }            return user;    }}

 


3.第三种方式可以完全不实现ModelDriven<T>,也可使用多个model对象的属性。
JSP:
<form action="sys/login.action" method="post">  <input type="text" name="user.username">  <input type="text" name="teacher.level">  <input type="submit" value="submit"></form>

 

Action: 必须提供set方法

public class sysAction extends ActionSupport{
   //using spring ioc or new manually 
private User user=new User(); private Teacher teacher=new Teacher(); public String login() throws Exception { System.out.println(user.getUsername()); System.out.println(teacher.getLevel()); return SUCCESS; } public void setUser(User user) { this.user = user; } public void setTeacher(Teacher teacher) { this.teacher = teacher; }}

 

Struts2中Action取得表单数据的几种方法