struts2注入类
struts2是可以注入一个对象的，那么一定需要继承ModelDriven的泛型接口。
package com.test.action;
import com.opensymphony.xwork2.ActionSupport;
import com.opensymphony.xwork2.ModelDriven;
import com.test.model.Contact;
import com.test.model.User;
public class ValideAction extends ActionSupport implements ModelDriven<User>{
/**
*
*/
private static final long serialVersionUID = 1L;
private User user;
private String username;
private Contact contact;
public Contact getContact() {
return contact;
}
public void setContact(Contact contact) {
this.contact = contact;
}
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;
}
private String password;
public String execute()
{
System.out.println(user.getContact().getPhone());
return SUCCESS;
}
@Override
public User getModel() {
// TODO Auto-generated method stub
if (null == user) {
return user = new User();
}
return user;
}
}
如上面的代码所示，就是会将User注入到类action中。而User也是一个嵌套类。
User
package com.test.model;
public class User {
private String username;
private Contact contact;
public Contact getContact() {
return contact;
}
public void setContact(Contact contact) {
this.contact = contact;
}
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;
}
private String password;
public String toString()
{
return username+" "+password;
}
}
里面包含一个联系信息类Contact
package com.test.model;
public class Contact {
private String phone;
private String address;
private String email;
public Contact()
{
}
public Contact(String phone,String address,String email)
{
this.phone=phone;
this.address=address;
this.email=email;
}
public String getPhone() {
return phone;
}
public void setPhone(String phone) {
this.phone = phone;
}
public String getAddress() {
return address;
}
public void setAddress(String address) {
this.address = address;
}
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
}
然后JSP页面的input类型如下所示
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ taglib uri="/struts-tags" prefix="s"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
<!-- 这个地方是用来显示错误信息 -->
<s:fielderror/>
<form action="data.action" method="post">
用户名：<input type="text" name="username"><br>
密码：<input type="password" name="password"><br>
-------------------联系方式----------------<br>
手机：<input type="text" name="contact.phone"><br>
地址：<input type="text" name="contact.address"><br>
邮箱：<input type="text" name="contact.email"><br>
<input type="submit" name="ok"><br>
</form>
</body>
</html>
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ taglib uri="/struts-tags" prefix="s" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
测试结果页面<br>
用户名：<s:property value="username"/><br>
密码：<s:property value="password"/><br>
--------------------联系方式-------------<br>
手机：<s:property value="contact.phone"/><br>
地址：<s:property value="contact.address"/><br>
邮箱：<s:property value="contact.email"/><br>
<s:debug></s:debug>
</body>
</html>
最终的输出结果如图所示
从这个例子中，学会了跳跃性的解决问题的思路，另外就是对依赖注入还不是非常了解，这个需要重点去学习和理解一下，特别是常用的几种注入方式。