客戶管理系統第一版

src中包括com.mmy.cstm包中含有子包：

1.actions（控制器）

    1>AddServlet

    2>DelServlet

    3>EditServlet

    4>SelectAllServlet

    5>SelectServlet

2.beans（實體類）

    1>Customer

3.dao（數據庫操作）

    1>CustomerDao

4.sevice（業務）

    1>CustomerService

5.utils（工具類）

    1>JdbcUtil

屬性文件：mysql_jdbc.properties

addServlet

package com.mmy.cstm.actions;

import com.mmy.cstm.beans.Customer;
import com.mmy.cstm.service.CustomerService;
import org.apache.commons.beanutils.BeanUtils;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.lang.reflect.InvocationTargetException;
import java.util.UUID;

public class AddServlet extends HttpServlet {
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        //處理請求參數的亂碼
        request.setCharacterEncoding("utf-8");
        Customer customer = new Customer();
        try {
            BeanUtils.populate(customer,request.getParameterMap());
        } catch (IllegalAccessException e) {
            e.printStackTrace();
        } catch (InvocationTargetException e) {
            e.printStackTrace();
        }
        String cid = UUID.randomUUID().toString().replace("-","").substring(0,10);
        customer.setCid(cid);
        CustomerService customerService = new CustomerService();
        customerService.addCustomer(customer);
        response.sendRedirect(request.getContextPath()+"/selectAll");
    }
}

DelServlet

package com.mmy.cstm.actions;

import com.mmy.cstm.beans.Customer;
import com.mmy.cstm.service.CustomerService;

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

public class DelServlet extends HttpServlet {
    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
            request.setCharacterEncoding("utf-8");
            String cid = request.getParameter( "cid");
            CustomerService customerService = new CustomerService();
            customerService.delCustomer(cid);
            response.sendRedirect(request.getContextPath()+"/selectAll");
    }
}

EditServlet

package com.mmy.cstm.actions;

import com.mmy.cstm.beans.Customer;
import com.mmy.cstm.service.CustomerService;
import org.apache.commons.beanutils.BeanUtils;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.lang.reflect.InvocationTargetException;

public class EditServlet extends HttpServlet {
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
            request.setCharacterEncoding("utf-8");
        Customer customer = new Customer();
        try {
            BeanUtils.populate(customer,request.getParameterMap());
        } catch (IllegalAccessException e) {
            e.printStackTrace();
        } catch (InvocationTargetException e) {
            e.printStackTrace();
        }
        CustomerService customerService = new CustomerService();
        customerService.editCustomer(customer);
        response.sendRedirect(request.getContextPath()+"/selectAll");
    }
}

SelectAllServlet

package com.mmy.cstm.actions;

import com.mmy.cstm.beans.Customer;
import com.mmy.cstm.service.CustomerService;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.util.List;

public class SelectAllServlet extends HttpServlet {
    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        request.setCharacterEncoding("utf-8");
        CustomerService customerService = new CustomerService();
        List<Customer> customerList = null;
        customerList = customerService.selectAll();
        request.setAttribute("customerList",customerList);
        request.getRequestDispatcher("/list.jsp").forward(request,response);
    }
}

SelectServlet 

package com.mmy.cstm.actions;

import com.mmy.cstm.beans.Customer;
import com.mmy.cstm.service.CustomerService;
import org.apache.commons.beanutils.BeanUtils;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.lang.reflect.InvocationTargetException;

public class SelectServlet extends HttpServlet {
    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
            request.setCharacterEncoding("utf-8");
            String cid = request.getParameter("cid");
            CustomerService customerService = new CustomerService();
            Customer customer = customerService.select(cid);
            request.setAttribute("customer",customer);
            request.getRequestDispatcher("/edit.jsp").forward(request,response);
    }
}

Customer

package com.mmy.cstm.beans;

public class Customer {
    private String cid;
    private String cname;
    private String gender;
    private String birthday;
    private String cellphone;
    private String email;
    private String description ;

    public Customer() {}

    public Customer(String cname, String gender, String birthday, String cellphone, String email, String description) {
        this.cname = cname;
        this.gender = gender;
        this.birthday = birthday;
        this.cellphone = cellphone;
        this.email = email;
        this.description = description;
    }

    public String getCid() {
        return cid;
    }

    public void setCid(String cid) {
        this.cid = cid;
    }

    public String getCname() {
        return cname;
    }

    public void setCname(String cname) {
        this.cname = cname;
    }

    public String getGender() {
        return gender;
    }

    public void setGender(String gender) {
        this.gender = gender;
    }

    public String getBirthday() {
        return birthday;
    }

    public void setBirthday(String birthday) {
        this.birthday = birthday;
    }

    public String getCellphone() {
        return cellphone;
    }

    public void setCellphone(String cellphone) {
        this.cellphone = cellphone;
    }

    public String getEmail() {
        return email;
    }

    public void setEmail(String email) {
        this.email = email;
    }

    public String getDescription() {
        return description;
    }

    public void setDescription(String description) {
        this.description = description;
    }
}

CustomerDao

package com.mmy.cstm.dao;

import com.mmy.cstm.beans.Customer;
import com.mmy.cstm.utils.JdbcUtil;
import org.apache.commons.dbutils.QueryRunner;
import org.apache.commons.dbutils.handlers.BeanHandler;
import org.apache.commons.dbutils.handlers.BeanListHandler;
import java.sql.SQLException;
import java.util.List;

public class CustomerDao {
    private QueryRunner queryRunner = new QueryRunner(JdbcUtil.getComboPooledDataSource());

    public void add(Customer customer){
        String sql = "insert into customer values(?,?,?,?,?,?,?)";
        Object[] param = {customer.getCid(),customer.getCname(),
                customer.getGender(),customer.getBirthday(),
                customer.getCellphone(),customer.getEmail(),
                customer.getDescription()};
        try {
            queryRunner.update(sql,param);
        } catch (SQLException e) {
            e.printStackTrace();
        }
    }

    public List<Customer> selectAll() {
        String sql = "select * from customer";
        List<Customer> customerList = null;
        try {
            customerList = queryRunner.query(sql, new BeanListHandler<Customer>(Customer.class));
        } catch (SQLException e) {
            e.printStackTrace();
        }
        return customerList;
    }

    public Customer select(String cid) {
        String sql =  "select * from customer where cid = ?";
        try {
            Customer customer = queryRunner.query(sql,new BeanHandler<Customer>(Customer.class),cid);
            return customer;
        } catch (SQLException e) {
            e.printStackTrace();
        }
        return null;
    }

    public void delCustomer(String cid) {
        String sql = "delete from customer where cid = ?";
        try {
            queryRunner.update(sql,cid);
        } catch (SQLException e) {
            e.printStackTrace();
        }
    }

    public void editCustomer(Customer customer) {
        String sql = "update customer set cname = ?,gender = ?,birthday = ?,cellphone = ?,email =?," +
                "description = ? where cid = ?";
        try {
            queryRunner.update(sql,customer.getCname(),customer.getGender(),customer.getBirthday(),
                                   customer.getCellphone(),customer.getEmail(),customer.getDescription(),
                                   customer.getCid());
        } catch (SQLException e) {
            e.printStackTrace();
        }
    }
}

CustomerService

package com.mmy.cstm.service;

import com.mmy.cstm.beans.Customer;
import com.mmy.cstm.dao.CustomerDao;

import java.util.List;

public class CustomerService {
    private CustomerDao customerDao = new CustomerDao();
    //>添加客戶
    public void addCustomer(Customer customer) {
            customerDao.add(customer);
    }

    public List<Customer> selectAll() {
        List<Customer> customerList = customerDao.selectAll();
        return customerList;
    }

    public Customer select(String cid) {
        return customerDao.select(cid);
    }

    public void delCustomer(String cid) {
        customerDao.delCustomer(cid);
    }

    public void editCustomer(Customer customer) {
        customerDao.editCustomer(customer);
    }
}

JdbcUtil

package com.mmy.cstm.utils;

import com.mchange.v2.c3p0.ComboPooledDataSource;

import java.io.FileInputStream;
import java.io.InputStream;
import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.Properties;

public class JdbcUtil {
    private  static ComboPooledDataSource comboPooledDataSource = new ComboPooledDataSource();
    static {
        Properties properties = new Properties();
        InputStream inputStream = JdbcUtil.class.getResourceAsStream("/mysql_jdbc.properties");
        try {
            properties.load(inputStream);
            String driverClass = properties.getProperty("driverClass");
            String url = properties.getProperty("url");
            String username = properties.getProperty("username");
            String password = properties.getProperty("password");
            comboPooledDataSource.setDriverClass(driverClass);
            comboPooledDataSource.setJdbcUrl(url);
            comboPooledDataSource.setUser(username);
            comboPooledDataSource.setPassword(password);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
    public static Connection getConnection(){
        try {
            return comboPooledDataSource.getConnection();
        } catch (SQLException e) {
            e.printStackTrace();
        }
        return null;
    }
    public static ComboPooledDataSource getComboPooledDataSource(){
        return comboPooledDataSource;
    }
    public static void close(Connection connection, Statement statement, ResultSet resultSet){
        try {
            if (connection != null)
                connection.close();
            if (statement != null)
                statement.close();
            if (resultSet != null)
                resultSet.close();
        } catch (SQLException e) {
            e.printStackTrace();
        }
    }
}