Struts2处理用户输入信息的三种方式

最新推荐文章于 2022-04-24 13:50:01 发布

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本文介绍在Struts2框架中实现用户登录的三种常见方法：直接通过Action类接收参数、利用领域对象接收参数及采用ModelDriven模式接收参数。

<form action="login.action" method="POST" >
        UserName:<input type="text" name="username">
        PassWord:<input type="text" name="password">
       <input type="submit" value="submit">
</form>

1.利用action类的属性接受用户输入

public class LoginAction extends ActionSupport{
	private static final long serialVersionUID = 5895052291935342240L;
	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;
	}
	@Override
	public String execute() throws Exception {
		// TODO Auto-generated method stub
		return super.execute();
	}
	
	
}

2.利用领域对象接受用户输入

public class LoginAction extends ActionSupport{
	private static final long serialVersionUID = 5895052291935342240L;
	private User user;
	public User getUser() {
		return user;
	}
	public void setUser(User user) {
		this.user = user;
	}
	@Override
	public String execute() throws Exception {
		// TODO Auto-generated method stub
		return super.execute();
	}
}

需要注意到是：此时表单的属性要用user.username发送。<input type="text" name="user.username">

3.使用ModelDriven模式接受用户的输入

public class LoginAction extends ActionSupport implements ModelDriven<User>{
	private static final long serialVersionUID = 5895052291935342240L;
	private User user = new User();
	public User getUser() {
		return user;
	}
	public void setUser(User user) {
		this.user = user;
	}
	@Override
	public String execute() throws Exception {
		// TODO Auto-generated method stub
		return super.execute();
	}
	public User getModel() {
		return user;
	}
}