helloworldaction.java

本书由浅入深、循序渐进地介绍了MVC的体系结构和如何构建一个基于MVC的Web框架

package com.gc.action;

import java.util.HashMap;

import com.gd.mvc.action.Action;
import com.gd.mvc.io.InfoInAndOut;

public class HelloWorldAction  {

	public InfoInAndOut doAction(InfoInAndOut infoIn) {
		String action = (infoIn.get("action") == null) ? "" : (String)infoIn.get("action");
		InfoInAndOut infoOut = infoIn;
		if (action.equals(""))                      	infoOut = this.doInit(infoIn);
		else if (action.equals("show"))  			infoOut = this.doShow(infoIn);
		return infoOut;
	}
	/**该方法用来实现没有传入动作时要处理的内容
	* @param infoIn
	* @return HashMap
	*/

	private InfoInAndOut doInit(InfoInAndOut infoIn) {
		InfoInAndOut infoOut = infoIn;
		try {
			infoOut.put("msg", "HelloWorld");
		} catch(Exception e) {
			e.printStackTrace();
		} finally {
			return infoOut;
		}
  	}
	
	/**该方法用来实现输出HelloWorld
	* @param infoIn
	* @return HashMap
	*/

	private InfoInAndOut doShow(InfoInAndOut infoIn) {
		InfoInAndOut infoOut = infoIn;
		try {
			infoOut.put("msg", "HelloWorld，执行的是show方法");
		} catch(Exception e) {
			e.printStackTrace();
		} finally {
			return infoOut;
		}
  	}
}