struts2 ongl

package com.chenjiahao.test;

import ognl.OgnlContext;
import ognl.OgnlException;

public class Demo1 {

	/**
	 * @param args
	 * @throws OgnlException
	 */
	public static void main(String[] args)  {
		//一个叫小李的员工
		Employee e = new Employee();
		e.setName("小李");
        //张经理的管理人员
		Manager m = new Manager();
		m.setName("张经理");

		// 创建OGNL下文,而OGNL上下文实际上就是一个Map对象
		OgnlContext ctx = new OgnlContext();

		// 将员工和经理放到OGNL上下文当中去
		ctx.put("employee", e);
		ctx.put("manager", m);
		//一个公司有很多老板，只有一个员工
		ctx.setRoot(e);// 设置OGNL上下文的根对象

		/** ********************** 取值操作 *************************** */
		// 表达式name将执行e.getName()，因为e对象是根对象(请注意根对象和非根对象表达式的区别)
		String employeeName = (String) OnglExpression.getValue("name", ctx, e);
		System.out.println(employeeName);//小李

		// 表达式#manager.name将执行m.getName()，注意：如果访问的不是根对象那么必须在前面加上一个名称空间，例如：#manager.name
		String managerName = (String) OnglExpression.getValue("#manager.name",
				ctx, e);
		System.out.println(managerName);//张经理

		// 当然根对象也可以使用#employee.name表达式进行访问
		employeeName = (String) OnglExpression.getValue("#employee.name", ctx,
				e);
		System.out.println(employeeName);//小李

		/** ********************** 赋值操作 *************************** */
		OnglExpression.setValue("name", ctx, e, "小明");
		employeeName = (String) OnglExpression.getValue("name", ctx, e);
		System.out.println(employeeName);

		OnglExpression.setValue("#manager.name", ctx, e, "孙经理");
		managerName = (String) OnglExpression.getValue("#manager.name", ctx, e);
		System.out.println(managerName);

		OnglExpression.setValue("#employee.name", ctx, e, "小芳");
		employeeName = (String) OnglExpression.getValue("name", ctx, e);
		System.out.println(employeeName);
	}

}

<a href="${pageContext.request.contextPath}/sy/demo_accept1.action?num1=20&&num2=5">accept1</a>

public class HelloAction implements ModelDriven<Cal>{


	private HttpServletRequest request;
	private Cal cal1=new Cal();
    private Cal cal2;
    private String sex;
    private String num1;
    

	public String getNum1() {
		return num1;
	}

	public void setNum1(String num1) {
		this.num1 = num1;
	}

	public Cal getCal2() {
		return cal2;
	}

	public void setCal2(Cal cal2) {
		this.cal2 = cal2;
	}	
	public String getSex() {
		return sex;
	}
	public void setSex(String sex) {
		this.sex = sex;
	}


	public String accept1() {
		System.out.println("cal1:"+cal1);
		System.out.println("num1:"+num1);

	        return "rs";
	}

}