1.属性驱动
struts2属性驱动和模型驱动帮助我们完成了数据自动获取，数据自动封装
表单中的name值要与action中定义的属性值一致
struts.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.5//EN"
"http://struts.apache.org/dtds/struts-2.5.dtd">
<struts>
<package name="userlogin" extends="struts-default">
<action name="loginAction" class="com.cheng.action.LoginAction">
<result name="success">/index.jsp</result>
</action>
</package>
</struts>
LoginAction.action
package com.cheng.action;
import com.opensymphony.xwork2.ActionSupport;
public class LoginAction 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;
}
@Override
public String execute() throws Exception {
System.out.println(username+password);
return "success";
}
}
index.jsp
<body>
<form action="loginAction.action" method="post">
username:<input type="text" name="username"><br>
password:<input type="password" name="password"><br>
<input type="submit" value="提交">
</form>
</body>
2.模型驱动
action中需要实现ModelDriven接口，接口中的泛型为我们要封装的实体类
当请求发送到action之前，调用MlogionAction类中的getModel()获取要将表单数据封装到哪个实例化的对象中。获得到该对象之后，我们可以获得类类型。获得类类型后，获得类中属性。request.getParameters获得表单提交的所有数据名。从而获取值。如果表单提交的name值与实体类中属性名一致，那么我们将获得表单中的数据封装到us对象当中去
Users.java
package com.cheng.pojo;
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;
}
}
MloginAction.java
package com.cheng.action;
import com.cheng.pojo.Users;
import com.opensymphony.xwork2.ActionSupport;
import com.opensymphony.xwork2.ModelDriven;
public class MloginAction extends ActionSupport implements ModelDriven<Users>{
private Users us=new Users();//前台提交的数据自动封装到对象中
@Override
public String execute() throws Exception {
System.out.println(us.getUsername());
System.out.println(us.getPassword());
return "success";
}
@Override
public Users getModel() {
return us;
}
}
struts.xml
<struts>
<package name="userlogin" extends="struts-default">
<action name="muserlogin" class="com.cheng.action.MloginAction">
<result name="success">/index.jsp</result>
<!-- 需要加入两个拦截器：模型封装拦截器，默认的拦截器 -->
<interceptor-ref name="modelDriven"></interceptor-ref>
<interceptor-ref name="defaultStack"></interceptor-ref>
</action>
</package>
</struts>
index.jsp
<body>
<form action="muserlogin.action" method="post">
username:<input type="text" name="username"><br>
password:<input type="password" name="password"><br>
<input type="submit" value="提交">
</form>
</body>
3.标签实现模型驱动
Users.java
package com.cheng.pojo;
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;
}
}
SloginAction.java
package com.cheng.action;
import com.cheng.pojo.Users;
import com.opensymphony.xwork2.ActionSupport;
public class SloginAction extends ActionSupport{
private Users us;
public Users getUs() {
return us;
}
public void setUs(Users us) {
this.us = us;
}
@Override
public String execute() throws Exception {
System.out.println(us.getUsername());
System.out.println(us.getPassword());
return "success";
}
}
struts.xml
<struts>
<!-- 使表单样式不被struts标签控制，从而手动控制-->
<constant name="struts.ui.theme" value="simple"/>
<constant name="struts.ui.templateDir" value="template"/>
<constant name="struts.ui.templateSuffix" value="ftl"/>
<package name="userlogin" extends="struts-default">
<action name="suserlogin" class="com.cheng.action.SloginAction">
<result name="success">/index.jsp</result>
</action>
</package>
</struts>
index.jsp
<body>
<s:form action="suserlogin" method="post" namespace="">
<!-- us.username action中定义的对象.实体属性 -->
username:<s:textfield name="us.username"/><br>
password:<s:password name="us.password"/><br>
<s:submit value="提交" />
</s:form>
</body>
4.源代码下载 密码：yw3e
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