一、用Action属性
在action里定义要接收的参数，并提供相应的set和get方法。
如：
- public class LoginAction extends ActionSupport {
- private String username;
- private String password;
- //对应的get set方法
- 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 execute() {
- // TODO Auto-generated method stub
- System.out.println("username = "+username);
- System.out.println("password = "+password);
- return SUCCESS;
- }
- }
- <form action="login" method="post">
- 用户名:<input type="text" name="username"><br/>
- 密 码：<input type="password" name="password"><br/>
- <input type="submit" value="提交">
- </form>
二、使用DomainModel
如果Action中属性过多，则可以Model保存为一个对象，并提供get和set
Model类
- public class User {
- 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;
- }
- }
Action类
- public class LoginAction extends ActionSupport {
- private User user;
- public String execute() {
- // TODO Auto-generated method stub
- System.out.println("username = "+user.getUsername());
- System.out.println("password = "+user.getPassword());
- return SUCCESS;
- }
- public User getUser() {
- return user;
- }
- public void setUser(User user) {
- this.user = user;
- }
- }
JSP
- <form action="login" method="post">
- 用户名:<input type="text" name="user.username"><br/>
- 密 码：<input type="password" name="user.password"><br/>
- <input type="submit" value="提交">
- </form>
三、使用ModelDriven（模型驱动）
使用模型驱动模式时，Acton必须实现ModelDriven接口，实现该接口则必须实现getModel()方法，该方法用于把Action和与之对应的Model实例关联起来。
Model类同DomainModel
Action类
- public class LoginAction extends ActionSupport implements ModelDriven<User> {
-
private User user = new User(); //需实例化
，一定要自己手动实例化 - public String execute() {
- return SUCCESS;
- }
- }
- public User getModel() {
- // TODO Auto-generated method stub
- return user;
- }
- }
JSP
- <form action="login" method="post">
- <!-- 属性可以为 对象.XXX 也可以直接为XXX 则前提Action中要自己实例化Model对象 -->
- 用户名:<input type="text" name="user.username"><br/>
- 密 码：<input type="password" name="password"><br/>
- <input type="submit" value="提交">
- </form>
四、使用request接收参数
此方法和传统的JSP页面接收参数一样，用request.getParameter("")方法。