4.12 重写团队作业1

最简单的就是三个数据的java文件，只需要写出对应的属性即可，还有连接数据库的DBUtil文件。

写出了一些功能，可以返回一些数据

看Servlet的代码

package classes.com.servlet;

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 javax.servlet.http.HttpSession;

import classes.com.bean.dao;


/**
 * Servlet implementation class DataServlet
 */
@WebServlet("/DataServlet")
public class DataServlet extends HttpServlet {
    private static final long serialVersionUID = 1L;

    /**
     * @see HttpServlet#HttpServlet()
     */
    public DataServlet() {
        super();
    }

    /**
     * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
     */
    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        request.setCharacterEncoding("UTF-8");
        response.setContentType("text/text;charset=UTF-8");
        String method = request.getParameter("method");
        System.out.println("DataServlet");
        if(method.equals("c1")) {
            try {
                System.out.println("c1");
                dao dao = new dao();
                String get_c1_data = dao.get_c1_data();
                response.getWriter().write(get_c1_data);
            } catch (Exception e) {
                e.printStackTrace();
            }
        }else if(method.equals("c2")) {
            try {
                dao dao = new dao();
                String get_c2_data = dao.get_c2_data();
                response.getWriter().write(get_c2_data);
            } catch (Exception e) {
                e.printStackTrace();
            }
        }else if(method.equals("c3")) {
            try {
                dao dao = new dao();
                String get_c3_data = dao.get_c3_data();
                response.getWriter().write(get_c3_data);
            } catch (Exception e) {
                e.printStackTrace();
            }
        }else if(method.equals("l1")) {
            try {
                dao dao = new dao();
                String get_l1_data = dao.get_l1_data();
                response.getWriter().write(get_l1_data);
            } catch (Exception e) {
                e.printStackTrace();
            }
        }else if(method.equals("l2")) {
            try {
                dao dao = new dao();
                String get_l2_data = dao.get_l2_data();
                response.getWriter().write(get_l2_data);
            } catch (Exception e) {
                e.printStackTrace();
            }
        }else if(method.equals("r1")) {
            try {
                dao dao = new dao();
                String get_r1_data = dao.get_r1_data();
                response.getWriter().write(get_r1_data);
            } catch (Exception e) {
                e.printStackTrace();
            }
        }else if(method.equals("r2")) {
            try {
                dao dao = new dao();
                String get_r2_data = dao.get_r2_data();
                response.getWriter().write(get_r2_data);
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    }

    /**
     * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
     */
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        // TODO Auto-generated method stub
        doGet(request, response);
    }

}