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利用struts2框架进行将页面请求的参数封装有三种方法
第一种（不推荐）
就是动作类和bean中结合在一起，这样方法比较简单，但是很混乱。
代码：
package com.example.action; import com.opensymphony.xwork2.ActionSupport; public class Person extends ActionSupport{ private String username; private String password; private String nickname; public String getUsername() { return username; } //动作的方法 public String execute() throws Exception { System.out.println(username+","+password+","+nickname); return NONE; } public void setUsername(String username) { this.username = username; } public String getPassword() { return password; } public void setPassword(String password) { this.password = password; } public String getNickname() { return nickname; } public void setNickname(String nickname) { this.nickname = nickname; } }
<action name="act1" class="com.example.action.Person"> <!-- 静态注入 相当于调用action动作类的get 和set 方法-->
<param name="nickname">游客</param> </action>
第二种将动作类与bean中分离
package com.example.domain; /** * 这是模型 * @author sheldonLee * */ public class Student { private String username; private String password; private String nickname; 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 getNickname() { return nickname; } public void setNickname(String nickname) { this.nickname = nickname; } @Override public String toString() { return "Student [username=" + username + ", password=" + password + ", nickname=" + nickname + "]"; } }
package com.example.action; import com.example.domain.Student; /** * 这是动作 * @author sheldonLee * */ public class StudentAction { private Student student; public Student getStudent() { return student; } public void setStudent(Student student) { this.student = student; } public String save(){ //将表单的数据封装到模型对象中 //调用service 将student中的数据保存到数据库中 System.out.println(student.toString()); return "none"; } }
<body>
<form action="${pageContext.request.contextPath }/act2" method="post">
用户名：<input type="text" name="student.username"/><br/>
密 码：<input type="password" name="student.password"/><br/>
昵 称: <input type="text" name="student.nickname"/><br/>
<input type="submit" value="注册"/><br/>
</form>
第三种是驱动模型（动作和bean也是分开的）ModelDriven
package com.example.domain; /** * 这是Customer模型 * @author sheldonLee * */ public class Customer { private String username; private String password; private String nickname; public String getUsername() { return username; } public void setUsername(String username) { this.username = username; } public String getPassword() { return password; } public void setPassword(String password) { this.password = password; } public String getNickname() { return nickname; } public void setNickname(String nickname) { this.nickname = nickname; } @Override public String toString() { return "Customer [username=" + username + ", password=" + password + ", nickname=" + nickname + "]"; } }
package com.example.action; import com.example.domain.Customer; import com.opensymphony.xwork2.ModelDriven; public class CustomerAction implements ModelDriven<Customer>{ //动作类关联一个Customer 对象 //为了getModel() 这个不会返回为空 所以要是实例化一个对象 private Customer customer= new Customer(); public Customer getCustomer() { return customer; } public void setCustomer(Customer customer) { this.customer = customer; } public String save(){ System.out.println(customer); return "none"; } //调用动作方法前，框架会先调用这个方法 //这里不会实例化对象 public Customer getModel() { // TODO Auto-generated method stub return customer; } }
<form action="${pageContext.request.contextPath }/act2" method="post">
<!--参数中省掉了类名 -->
用户名：<input type="text" name="username"/><br/>
密 码：<input type="password" name="password"/><br/>
昵 称: <input type="text" name="nickname"/><br/>
<input type="submit" value="注册"/><br/>
</form>
主要注意两点 动作类要实现ModelDriver的接口，动作类中要关联对象要注意要实例化
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原文地址：http://www.cnblogs.com/qerror404/p/4875898.html
