struts2接收参数的几种形式

1、使用属性

HTML:

<form action="login" method="post" name="form1">
  用户名：<s:textfield name="username"/><br/>
   密 码：<s:password name="password"/><br/>
               <s:submit value="提交"/>
 </form>

action:

public class TestAction 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;
     }
 }

2、使用类来接收

HTML：

<form action="login" method="post" name="form1">
  用户名：<s:textfield name="users.username"/><br/>
   密 码：<s:password name="users.password"/><br/>
             <s:submit value="提交"/>
 </form>

Action：

public class TestAction extends ActionSupport{
private Users users;

public Users getUsers(){

return users;

}

public void setUsers(Users users){

this.users=users;

}

Users类：

public class Users{
 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;
 }
}

3、使用模型驱动

HTML:

<form action="login" method="post" name="form1">
  用户名：<s:textfield name="username"/><br/>
   密 码：<s:password name="password"/><br/>
               <s:submit value="提交"/>
 </form>

Action:

public class sysAction extends ActionSupport implements ModelDriven<User>{
    private User user = new User();  //必须手动实例化   

    public User getModel() {
        return user;  //返回实例
    }
}

4、使用传统的request

public class TestAction extends ActionSupport{
     private static final long serialVersionUID = -7463970150000893325L;  

     public void execeute() {
         String name = super.getRequest().getParameter("paraName");
         System.out.println("姓名：" + name);
     }
 }