Struts2中Action接收传递的参数

Struts2中Action接收传递的参数有 三种方式：

1.用Action的属性接收参数：

struts.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC
	"-//Apache Software Foundation//DTD Struts Configuration 2.3//EN"
	"http://struts.apache.org/dtds/struts-2.3.dtd">

<struts>
	<constant name="struts.enable.DynamicMethodInvocation" value="true" />
    <constant name="struts.devMode" value="true" />
	<package name="font" namespace="/user" extends="struts-default">
		      
       <action name="user" class="com.zhang.HelloAction">
           <result >
             /Studentadd_success.jsp
           </result>
        </action>
        
    </package>
</struts>

HelloAction.java

package com.zhang;

import com.opensymphony.xwork2.ActionSupport;

public class HelloAction extends ActionSupport
{
	private String name;
	private int age;
	
	public String add()
	{
		System.out.println("name="+name);
		System.out.println("age="+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;
	}
	
}

     .定义：在Action类中定义属性，创建get和set方法；
      访问：使用属性名传递参数，如：http://localhost:8080/Struts2_03/user/user!add?name=aa&age=10

2.用DomainModel接收参数：

HelloAction.java

package com.zhang;

import com.opensymphony.xwork2.ActionSupport;

public class HelloAction extends ActionSupport
{
	private User user;
	
	public String add()
	{
		System.out.println("name="+user.getName());
		System.out.println("age="+user.getAge());
		return SUCCESS;
	}
	
	public User getUser()
	{
		return user;
	}
	
	public void setUser(User user)
	{
		this.user = user;
	}
}

package com.zhang;

public class User
{
	private String name;
	private int age;

	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;
	}
}

       定义：定义Model类，在Action中定义Model类的对象（不需要new），创建该对象的get和set方法；
      接收：通过对象的属性接收参数，如：user.getName()；
      访问：使用对象的属性传递参数，如：http://localhost:8080/Struts2_04/user/user!add?user.name=a&user.age=10

3.用ModelDriven接收参数

HelloAction.java

package com.zhang;

import com.opensymphony.xwork2.ActionSupport;
import com.opensymphony.xwork2.ModelDriven;

public class HelloAction extends ActionSupport implements ModelDriven<User>
{
	private User user = new User();
	
	public String add()
	{
		System.out.println("name="+user.getName());
		System.out.println("age="+user.getAge());
		return SUCCESS;
	}
	
	public User getModel()
	{
		return user;
	}
}

package com.zhang;

public class User
{
	private String name;
	private int age;

	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;
	}
}

        定义：Action实现ModelDriven泛型接口，定义Model类的对象（必须new），通过getModel方法返回该对象；
        访问：直接使用属性名传递参数，如：http://localhost:8080/Struts2_04/user/user!add?name=a&age=10

Struts2中Action接收传递的参数,布布扣,bubuko.com

Struts2中Action接收传递的参数

原文：http://blog.csdn.net/jiangnan2014/article/details/20999801