BaseWebAction.java

package cn.newgxu.bbs.web.webservice.impl;

import java.io.PrintWriter;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.opensymphony.webwork.ServletActionContext;
import com.opensymphony.xwork.ActionSupport;

public abstract class BaseWebAction extends ActionSupport {

	private static final long serialVersionUID = 21827121L;
	protected static Logger l = LoggerFactory.getLogger(BaseWebAction.class);

	// 子类action需要实现这个方法
	public abstract String execute();

	public HttpServletRequest getRequest() {
		return ServletActionContext.getRequest();
	}

	public HttpServletResponse getResponse() {
		return ServletActionContext.getResponse();
	}

	public HttpSession getSession() {
		return this.getRequest().getSession();
	}

	public void request_add(String name, Object obj) {
		this.getRequest().setAttribute(name, obj);
	}

	/**
	 * @方法名称 :session_add
	 * @功能描述 :添加session的属性
	 * @返回值类型 :boolean
	 * @param name
	 * @param obj
	 * @return
	 * 
	 * @创建日期 :2011-5-16
	 * @修改记录 :
	 */
	public boolean session_add(String name, Object obj) {
		try {
			getSession().setAttribute(name, obj);
			return true;
		} catch (Exception e) {
			return false;
		}
	}

	public Object session_get(String name) {
		return getSession().getAttribute(name);
	}

	/**
	 * 使用 Ajax 返回相应的值
	 * 
	 * @param info
	 */
	public void ajaxReturn(Object info) {
		PrintWriter writer = null;
		try {
			writer = this.getResponse().getWriter();
			writer.print(info);
		} catch (Exception e) {
			l.error("ajax返回值时出错 " + e.toString());
		} finally {
			if (writer != null) {
				writer.close();
			}
		}
	}

}