Struts2 参数传入四种方式

public class UserAction {
    private String name;
    private int     age;
    public String add(){
        System.out.println(name+age);
        return "success";
    }
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public int getAge() {
        return age;
    }
    public void setAge(int age) {
        this.age = age;
    }
    

}

public class UserModelAction {
    private User user;
    
    public String add(){
        System.out.println(user.getName()+user.getAge());
        return "success";
    }
    public User getUser() {
        return user;
    }
    public void setUser(User user) {
        this.user = user;
    }
    
    

}

public class UserModelDrivenAction implements ModelDriven<User>{
    private User user  = new User();;
    public  String add(){
        System.out.println("姓名"+user.getName()+"年龄:"+user.getAge());
        return "success";
    }
    //使用 ModelDriven 将参数值存入对应的对象中，user 对象必须被初始化,在跳转的页面能够得到参数的值
    @Override
    public User getModel() {
        // TODO Auto-generated method stub
        return user;
    }

}

配置文件

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC
    "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
    "http://struts.apache.org/dtds/struts-2.0.dtd">

<struts>
    <constant name="struts.devMode" value="true" />
    
    <package name="param" namespace="/param" extends="struts-default">
        <action name="user" class="com.yao.action.paramInput.UserAction" >
            <result>/ActionParamInput/success.jsp</result>
        </action>
        
        <!-- 参数初始化一个对象 -->
        <action name="userModel" class="com.yao.action.paramInput.UserModelAction"  method="add">
            <result>/ActionParamInput/success.jsp</result>
        </action>
        
        <action name="userModelDriver" class="com.yao.action.paramInput.UserModelDrivenAction"  method="add">
            <result>/ActionParamInput/success.jsp</result>
        </action>
    </package>
</struts>

（一）页面表单提交

 <form action="/param/user!add" method="post"> 
        <input type="text" name="name"> 
        <input type="text" name="age">
        <input type="submit" value="submit"> 
    </form> 

（二）表单Model方式

  <form action="/param/userModel" method="get"> 
        <input type="text" name="user.name"> 
        <input type="text" name="user.age">
        <input type="submit" value="submit"> 
    </form>

（三）ModelDriver

  <form action="/param/userModelDriver" method="get"> 
        <input type="text" name="name"> 
        <input type="text" name="age">
        <input type="submit" value="submit"> 
    </form>

（四）URL

      通过链接传递参数
    <a href="<%=path%>/param/user!add?name=宋&age=9">添加用户</a> <br>
    
    使用Domain Model接收参数<a href="<%=path%>/param/userModel!add?user.name=song&user.age=8">添加用户</a>