cn.infop.controller.user.UserExists Maven / Gradle / Ivy

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package cn.infop.controller.user;

import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.commons.lang3.ObjectUtils;
import org.apache.commons.lang3.StringUtils;

import cn.infop.dao.UserDao;
import cn.infop.entity.User;
import cn.infop.tools.JsonUtils;

/**
 * Servlet implementation class UserExists
 */
@WebServlet("/console/user-exists.do")
public class UserExists extends HttpServlet {

	private static final long serialVersionUID = 6254161255754697910L;

	protected void service(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		boolean flag = false;
		String username = request.getParameter("username");
		if (StringUtils.isNotEmpty(username)) {
			User user = new UserDao().findByUsername(username);
			if (ObjectUtils.isEmpty(user)) {
				flag = false;
			} else {
				flag = true;
			}

		} else {
			flag = false;
		}
		JsonUtils.printJson(response, flag);
	}

}