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java web之个人通讯录系统

kangyaping 2016-11-23 19:18 原文

前天下了第一场雪，专业课老师给我们布置了一个期末小作业，真的感觉到寒假就要来临了。这个学期没过多久就要结束了。总结这学期，感觉还是有不少收获的。完成了当初许下的诺言，现在也越来越喜欢软件这个行业了，虽然在编程的时候运行一出错就感觉到异常的烦心。但是问题解决之后又是异常的开心。大概这就是编程的乐趣与纠结所在吧。好了，不说那么多废话了，现在开始上截图：

下面粘贴代码：

首先是目录结构：

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>


<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <title>add.jsp</title>
    <script type="text/javascript" src="<c:url value='/jquery/contactor.js'/>"></script> 
 
      <style type="text/css">
    body{
        text-align: center;
        font-size:38px;
    }
         *{
           font-family:华文楷体;
           font-size:18px;
           color:#F0F";
   }
   h1{
       text-align: center;
       font-size:38px;
   }
    </style>
      
  </head>
  
  <body >
  
    <h1 style="font-size:38px;">添加新的联系人</h1>
    
    <form action="<c:url value='/ContactorServlet?userId=${userId } '/>"  method="post" onsubmit="return checkForm()">
        <input type="hidden" name="method" value="4">
        <table border="1" width="50%" align="center">
            <tr>
                <td>姓名</td>
                <td>
                    <input type="text" name="name" id="name" onfocus="nameFocus()" onblur="nameBlur()"/>
                    <div id="nameId"></div>
                </td>
            </tr>
            <tr>
                <td>电话</td>
                <td>
                    <input type="text" name="tel" id="tel" onfocus="telFocus()" onblur="telBlur()"/>
                    <div id="telId"></div>
                </td>
            </tr>
            <tr>
                <td>地址</td>
                <td>
                    <input type="text" name="address" id="address" />
                </td>
            </tr>        
             <tr>
                <td>邮编</td>
                <td>
                    <input type="text" name="zipcode" />
                </td>
            </tr>
        
                    
        </table>
        <input style="margin-right:200px;" type="submit"  value="添加"/>    
                
    </form>
  </body>
</html>
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>


<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <title>edit.jsp</title>

    <script type="text/javascript" src="<c:url value='/jquery/contactor.js'/>"></script> 
 
    
      <style type="text/css">
    body{
        text-align: center;
        font-size:38px;
    }
         *{
           font-family:华文楷体;
           font-size:18px;
           color:#F0F";
   }
   h1{
       text-align: center;
       font-size:38px;
   }
    </style>
      
  </head>
  
  <body > 
    <h1 style="font-size:38px;">修改联系人信息</h1>
    <form action="<c:url value='/ContactorServlet'/>" method="post" onsubmit="return checkForm()">
        <input type="hidden" name="method" value="6">
        <input type="hidden" name="id" value="${contactor.id }">
        <table border="1" width="50%" align="center">
            <tr>
                <td>姓名</td>
                <td>
                    <input type="text" name="name" value="${contactor.name }" id="name" onfocus="nameFocus()" onblur="nameBlur()"/>
                    <div id="nameId"></div>
                </td>
            </tr>
            <tr>
                <td>电话</td>
                <td>
                    <input type="text" name="tel" value="${contactor.tel }" id="tel" onfocus="telFocus()" onblur="telBlur()" />
                    <div id="telId"></div>
                </td>
            </tr>
            <tr>
                <td>地址</td>
                <td>
                    <input type="text" id="address" name="address" value="${contactor.address }" />
                </td>
            </tr>        
             <tr>
                <td>邮编</td>
                <td>
                    <input type="text" name="zipcode" value="${contactor.zipcode }" />
                </td>
            </tr>    
            
        </table>
        <input style="margin-right:200px;" type="submit" value="更改"/>
                    
            
    </form>
  </body>
</html>
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>


<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <title>home.jsp</title>
  </head>
  
<frameset rows="100%,*">
    
    <frame name="body" src="<c:url value='/jsp/top.jsp'/>" />
</frameset>
</html>
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>


<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <title>list.jsp</title> 
      <style type="text/css">
    body{
        text-align: center;
        font-size:38px;
    }
         *{
           font-family:华文楷体;
           font-size:18px;
           color:#F0F";
   }
   h1{
       text-align: center;
        font-size:38px;
   }
   a:link{
        color: #999;
        text-decoration: none;
   }
   a:VISITED {
    text-decoration: none;
    color: #c60;
}
    a:HOVER {
    text-decoration: none;
    color: #00F;
}
    </style>
     
  </head>
  
  <body >
    <h1 style="font-size:38px;">欢迎登录到通信录系统</h1>
    <a  style="font-size:26px;" href="<c:url value='/ContactorServlet?method=3&userId=${userId }'/>">查看联系人</a>
    <a  style="font-size:26px;" href="<c:url value='/jsp/add.jsp'/>">添加联系人</a>
    <a     style="font-size:26px;" href="<c:url value='/jsp/top.jsp'/>">退出系统</a>
    
    <table border="1" align="center" width="60%">
        <tr>
            <th>姓名</th>
            <th>电话</th>
            <th>地址</th>
            <th>邮编</th>
            <th>操作1</th>
            <th>操作2</th>
            
        </tr>
        <c:forEach items="${contactorList }" var="c">
        <tr>
            <td>${c.name }</td>
            <td>${c.tel }</td>
            <td>${c.address }</td>
            <td>${c.zipcode }</td>
            
            <td><a href="<c:url value='/ContactorServlet?method=5&id=${c.id }'/>">编辑</a>
            </td>
            <td>
                <a href="<c:url value='/ContactorServlet?method=7&id=${c.id }'/>" >删除</a>
            </td>
        </tr>
        </c:forEach>
    </table>
  </body>
</html>
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>


<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <title>top.jsp</title>
      <style type="text/css">
    body{
        text-align: center;
        font-size:38px;
    }
         *{
           font-family:华文楷体;
           font-size:18px;
           color:#F0F";
   }
   h1{
       text-align: center;
       font-size:38px;
   }
    </style>
    
  </head>
  
  <body >
    <h1 style="font-size:38px;">我的通信录</h1>
     
    <form action="<c:url value='/ContactorServlet'/>" method="post">
          <input type="hidden" name="method" value="1"> 
        用户名:<input type="text" name="username"  /><br/>
        密 &nbsp;   码:<input type="password" name="password" /><br/>
        <input type="submit" value="注册">
    </form>
  </body>
</html>
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>


<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <title>top.jsp</title>
     <style type="text/css">
    body{
        text-align: center;
        font-size:38px;
    }
         *{
           font-family:华文楷体;
           font-size:18px;
           color:#F0F";
   }
   h1{
       text-align: center;
       font-size:38px;
   }
    </style>
  </head>
  
  <body >
    <h1 style="font-size:38px;">我的通信录</h1>
     
    <form action="<c:url value='/ContactorServlet'/>" method="post">
        <input type="hidden" name="method" value="2"> 
        用户名:<input type="text" name="username"/><br/>
        密 &nbsp;  码:<input type="password" name="password"/><br/>
        <input type="submit" value="登录">
    <a href="<c:url value='/jsp/register.jsp'/>" target="body" >注册</a>
  </form>
  </body>
</html>

index.jsp

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<jsp:forward page="/jsp/home.jsp" />

contactor.js

//当鼠标放在客户名文本框时，给出一个提示文本
function nameFocus() {
    var nameId = document.getElementById("nameId");
    nameId.innerHTML = "请输入客户真实姓名";
}
//当鼠标离开客户名文本框时，给出一个文本提示
function nameBlur() {
    var name = document.getElementById("name");
    var nameId = document.getElementById("nameId");
    var reg= /^[\u4e00-\u9fa5]+$/;
    if(name.value == ""){
        nameId.innerHTML = "<font color='red'>联系人名不能为空</font>";
        return false;
    }
    if(reg.test(name.value) == false){
        nameId.innerHTML = "<font color='red'>联系人名只能输入中文简体汉字</font>";
        return false;
    }
    nameId.innerHTML = "<font color='green'>联系人名输入正确</font>";
    return true;
    
}
//当鼠标放在客户名文本框时，给出一个提示文本
function telFocus() {
    var telId = document.getElementById("telId");
    telId.innerHTML = "请输入手机号码";
}

//当鼠标离开客户名文本框时，给出一个文本提示
function telBlur() {
    var tel = document.getElementById("tel");
    var telId = document.getElementById("telId");
    var reg= /^(13|15|17|18)\d{9}$/;
    if(tel.value == ""){
        telId.innerHTML = "<font color='red'>手机号码不能为空</font>";
        return false;
    }
    if(reg.test(tel.value) == false){
        telId.innerHTML = "<font color='red'>手机号码输入不正确</font>";
        return false;
    }
    telId.innerHTML = "<font color='green'>手机号码输入正确</font>";
    return true;
    
}

//表单提交时验证输入内容的有效性
function checkForm() {
    var flagname = nameBlur();
    var flagtel = telBlur();
    if(flagname == true &&  flagtel == true ){
        return true;
    }else{
        alert("失败，请按提示输入信息 ！")
        return false;
    }
    
    
}

 

package cn.edu.aynu.rjxy.bean;
/**
 * 联系人表属性
 * @author Administrator
 *
 */
public class Contactor {
    private int id;
    private int userId;
    private String name;
    private String tel;
    private String address;
    private String zipcode;
    
    public int getId() {
        return id;
    }
    public void setId(int id) {
        this.id = id;
    }
    public int getUserId() {
        return userId;
    }
    public void setUserId(int userId) {
        this.userId = userId;
    }
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public String getTel() {
        return tel;
    }
    public void setTel(String tel) {
        this.tel = tel;
    }
    public String getAddress() {
        return address;
    }
    public void setAddress(String address) {
        this.address = address;
    }
    public String getZipcode() {
        return zipcode;
    }
    public void setZipcode(String zipcode) {
        this.zipcode = zipcode;
    }
    
    
}

 

package cn.edu.aynu.rjxy.bean;
/**
 * 用户表属性
 * @author Administrator
 *
 */
public class User {
    private int id;
    private String username;
    private String password;
    public int getId() {
        return id;
    }
    public void setId(int id) {
        this.id = id;
    }
    public String getUsername() {
        return username;
    }
    public void setUsername(String username) {
        this.username = username;
    }
    public String getPassword() {
        return password;
    }
    public void setPassword(String password) {
        this.password = password;
    }
    
    
}

 

package cn.edu.aynu.rjxy.dao;

import java.sql.SQLException;
import java.util.List;

import org.apache.commons.dbutils.QueryRunner;
import org.apache.commons.dbutils.handlers.BeanHandler;
import org.apache.commons.dbutils.handlers.BeanListHandler;

import cn.edu.aynu.rjxy.bean.Contactor;
import cn.edu.aynu.rjxy.utils.JDBCUtils;

/**
 * 对linkman表的增删改查
 * @author Administrator
 *
 */
public class ContactorDao {
    private  QueryRunner qr = new QueryRunner(JDBCUtils.getDataSource());
    /**
     * 添加联系人
     * @param c
     * @throws SQLException 
     */
    public void insert(Contactor c,int userId) throws SQLException{
        String sql = "insert into linkman(name,tel,address,zipcode,userId) values(?,?,?,?,?)";
        qr.update(sql, c.getName(),c.getTel(),c.getAddress(),c.getZipcode(),userId);
    }
    /**
     * 删除联系人
     * @param cid
     * @throws SQLException
     */
    public void delete(int id) throws SQLException{
        String sql = "delete from linkman where id=?";
        qr.update(sql, id);
    }
    /**
     * 修改联系人
     * @param c
     * @throws SQLException
     */
    public void update(Contactor c,int userId) throws SQLException{
        String sql = "update linkman set name=?,tel=?,address=?,zipcode=?,userId=? where id=?";
        qr.update(sql, c.getName(),c.getTel(),c.getAddress(),c.getZipcode(),userId,c.getId());
    }
    /**
     * 根据userId查询联系人
     * @throws SQLException 
     * 
     */
    public List<Contactor> findAll(int userId) throws SQLException{
        String sql = "select * from linkman where userId = ?";
        List<Contactor> list = qr.query(sql, new BeanListHandler<Contactor>(Contactor.class),userId);
        return list;
        
    }
    /**
     * 根据id查询某个联系人
     * @throws SQLException 
     * 
     */
    public Contactor findByCid(int id) throws SQLException{
        String sql = "select * from linkman where id=?";
        Contactor c = qr.query(sql, new BeanHandler<Contactor>(Contactor.class), id);
        return c;
    }
    
}

 

package cn.edu.aynu.rjxy.dao;

import java.sql.SQLException;

import org.apache.commons.dbutils.QueryRunner;
import org.apache.commons.dbutils.handlers.BeanHandler;

import cn.edu.aynu.rjxy.bean.User;
import cn.edu.aynu.rjxy.utils.JDBCUtils;

/**
 * 对user表的查询
 * @author Administrator
 *
 */
public class UserDao {
    private  QueryRunner qr = new QueryRunner(JDBCUtils.getDataSource());
    /**
     * 根据用户名和用户密码查询
     * @param cid
     * @return
     * @throws SQLException
     */
    public User findByCid(String username,String password) throws SQLException{
        String sql = "select * from user where username=?&&password=?";
        User u = qr.query(sql, new BeanHandler<User>(User.class), username,password);
        return u;
    }
    /**
     * 注册
     * @param c
     * @throws SQLException 
     */
    public void register(User u) throws SQLException{
        String sql = "insert into user(username,password) values(?,?)";
        qr.update(sql, u.getUsername(),u.getPassword());
    }
}

 

package cn.edu.aynu.rjxy.service;

import java.sql.SQLException;
import java.util.List;

import cn.edu.aynu.rjxy.bean.Contactor;
import cn.edu.aynu.rjxy.dao.ContactorDao;

/**
 * 联系人功能处理
 * @author Administrator
 *
 */
public class ContactorService {
    //创建ContactorDao对象
    ContactorDao dao = new ContactorDao();
    /**
     * 添加联系人
     * @param c
     */
    public void add(Contactor c,int userId){
        try {
            dao.insert(c,userId);
        } catch (SQLException e) {
            throw new RuntimeException(e);
        }
    }
    /**
     * 删除联系人
     * @param cid
     */
    public void delete(int id){
        try {
            dao.delete(id);
        } catch (SQLException e) {
            throw new RuntimeException(e);
        }
    }
    /**
     * 加载（查询）联系人
     * @param cid
     */
    public List<Contactor> load(int userId){
        try {
            return dao.findAll(userId);
        } catch (SQLException e) {
            throw new RuntimeException(e);
        }
    }
    /**
     * 加载（查询）联系人（为修改做准备）
     * @param cid
     */
    public Contactor loadById(int id){
        try {
            return dao.findByCid(id);
        } catch (SQLException e) {
            throw new RuntimeException(e);
        }
    }
    /**
     * 编辑（修改）联系人信息
     * @param c
     */
    public void edit(Contactor c,int userId){
        try {
            dao.update(c,userId);
        } catch (SQLException e) {
            throw new RuntimeException(e);
        }
    }
    
}

 

package cn.edu.aynu.rjxy.service;

import java.sql.SQLException;

import cn.edu.aynu.rjxy.bean.User;
import cn.edu.aynu.rjxy.dao.UserDao;


/**
 * 
 * @author Administrator
 *
 */
public class UserService {
    //创建ContactorDao对象
    UserDao dao = new UserDao();
    /**
     * 根据用户名和密码查询用户
     * @param cid
     */
    public User login(String username,String password){
        try {
            return dao.findByCid(username,password);
        } catch (SQLException e) {
            throw new RuntimeException(e);
        }
    }
    /**
     * 注册
     * @param c
     */
    public void register(User u){
        try {
            dao.register(u);
        } catch (SQLException e) {
            throw new RuntimeException(e);
        }
    }
}

 

package cn.edu.aynu.rjxy.servlet;

import java.io.IOException;
import java.util.List;

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

import cn.edu.aynu.rjxy.bean.Contactor;
import cn.edu.aynu.rjxy.bean.User;
import cn.edu.aynu.rjxy.service.ContactorService;
import cn.edu.aynu.rjxy.service.UserService;
import cn.edu.aynu.rjxy.utils.CommonsUtils;
/**
 * 处理联系人请求
 * @author Administrator
 *
 */
public class ContactorServlet extends HttpServlet {
    private ContactorService cs = new ContactorService();
    private UserService us = new UserService();
    private int userId;
    public void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {

        this.doPost(request, response);
    }

    /**
     * 通过获取表单中的隐藏字段method或者超链接中的method参数的值来区分调用执行那个方法来处理这个请求
     */
    public void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        //处理中文乱码
        request.setCharacterEncoding("UTF-8");
        response.setContentType("text/html;charset=UTF-8");
        //获取隐藏字段method的值，并把它转换为int型
        int method = Integer.parseInt(request.getParameter("method"));
        
        switch(method){
            case 1: this.register(request, response);
                    break;
            case 2: this.login(request, response);
                    break;
            case 3: this.query(request, response);
                    break;
            case 4: this.add(request, response);
                    break;
            case 5: this.loadForUpdate(request, response);
                    break;
            case 6: this.edit(request, response);
                    break;
            case 7:    this.delete(request, response);
                    break;
        }
        
        
    }
    /**
     * 处理注册的请求
     * @param request
     * @param response
     * @throws ServletException
     * @throws IOException
     */
    public void register(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        //使用CommonUtils工具类将请求数据封装到bean中
        User u = CommonsUtils.toBean(request.getParameterMap(), User.class);
        //执行添加客户业务
        us.register(u);
        //输出添加成功提示
        response.getWriter().print("注册成功,三秒钟自动跳转到登录界面");
        response.setHeader("Refresh","3;url=http://127.0.0.1:8099/addresslist/jsp/top.jsp");  

    }
    /**
     * 处理登录的请求 method=2
     * @param request
     * @param response
     * @throws ServletException
     * @throws IOException
     */
    public void login(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        //从请求中解析用户名和密码
        String username = request.getParameter("username");
        String password = request.getParameter("password");
        //执行加载业务
        User u = us.login(username, password);
        if (u != null) {
            HttpSession session = request.getSession();
            session.setAttribute("userId", u.getId());
            response.getWriter().print("登录成功"+u.getId());
            //通过请求转发将pb带到list.jsp上去
            request.getRequestDispatcher("/jsp/list.jsp").forward(request, response);
        }else{
            response.getWriter().print("登录失败，即将跳转到登录页面，请重新登录......");
            response.setHeader("Refresh","3;url=http://127.0.0.1:8099/addresslist/jsp/top.jsp");  

        }
        
    }
    /**
     * 处理查看联系人的请求 method=3
     * @param request
     * @param response
     * @throws ServletException
     * @throws IOException
     */
    public void query(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        HttpSession session = request.getSession();
         userId = (Integer) session.getAttribute("userId");
        //执行查询业务
        List<Contactor> list = cs.load(userId);
        //将list存放到request域中
        request.setAttribute("contactorList", list);
        System.out.println(list.size());
        //通过请求转发将查询结果带到list.jsp页面上显示
        request.getRequestDispatcher("/jsp/list.jsp").forward(request, response);
        
    }
    /**
     * 处理添加客户的请求
     * @param request
     * @param response
     * @throws ServletException
     * @throws IOException
     */
    public void add(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        HttpSession session = request.getSession();
        userId = (Integer) session.getAttribute("userId");
        //使用CommonUtils工具类将请求数据封装到bean中
        Contactor c = CommonsUtils.toBean(request.getParameterMap(), Contactor.class);
        //执行添加客户业务
        cs.add(c,userId);
        //输出添加成功提示
        response.getWriter().print("添加成功,三秒后跳转到功能界面......");
        response.setHeader("Refresh","3;url=http://127.0.0.1:8099/addresslist/jsp/list.jsp");  
    }
    /**
     * 处理加载某一个客户的请求
     * @param request
     * @param response
     * @throws ServletException
     * @throws IOException
     */
    public void loadForUpdate(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        //从请求中获取客户的cid
        String ids = request.getParameter("id");
        int id = Integer.valueOf(ids);
        //执行加载业务
        Contactor c = cs.loadById(id);
        //将Customer对象c保存在request域中
        request.setAttribute("contactor", c);
        //通过请求转发将customer对象显示在list.jsp页面上
        request.getRequestDispatcher("/jsp/edit.jsp").forward(request, response);

    }
    /**
     * 处理更改某一联系人的请求
     * @param request
     * @param response
     * @throws ServletException
     * @throws IOException
     */
    public void edit(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        HttpSession session = request.getSession();
        userId = (Integer) session.getAttribute("userId");
        //使用CommonUtils工具类将请求数据封装到bean中
        Contactor c = CommonsUtils.toBean(request.getParameterMap(), Contactor.class);
        //执行更改业务
        cs.edit(c,userId);
        //给客户端发送更改成功提示
        response.getWriter().print("更改成功,三秒后跳转到功能界面......");
        response.setHeader("Refresh","3;url=http://127.0.0.1:8099/addresslist/jsp/list.jsp");  

    }
    /**
     * 处理删除某一联系人的请求
     * @param request
     * @param response
     * @throws ServletException
     * @throws IOException
     */
    public void delete(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        //从请求中获取cid
        String cid = request.getParameter("id");
        int id = Integer.valueOf(cid);
        //执行删除客户业务
        cs.delete(id);
        //给客户端发送删除成功提示
        response.getWriter().print("删除成功,三秒后跳转到功能界面......");
        response.setHeader("Refresh","3;url=http://127.0.0.1:8099/addresslist/jsp/list.jsp");  


}

}

 

package cn.edu.aynu.rjxy.utils;

import java.util.Map;
import java.util.UUID;

import org.apache.commons.beanutils.BeanUtils;
import org.apache.commons.beanutils.ConvertUtils;

/**
 * 提供UUID，实现表单数据封装到bean中
 * @author Administrator
 *
 */
public class CommonsUtils {
    /**
     * 返回一个UUID
     * @return
     */
    public static String uuid(){
        return UUID.randomUUID().toString().replace("-", "").toUpperCase();
        
    }
    
    /**
     * 把表单数据封装到bean中
     */
    public static <T> T toBean(Map data, Class<T> clazz){
        try{
            T bean = clazz.newInstance();
            BeanUtils.populate(bean, data);
            return bean;
        }catch (Exception e) {
            throw new RuntimeException(e);
        }
    }
    
    
}

 

package cn.edu.aynu.rjxy.utils;

import java.sql.Connection;
import java.sql.SQLException;

import javax.sql.DataSource;

import com.mchange.v2.c3p0.ComboPooledDataSource;

/**
 * 创建数据库连接池
 * @author Administrator
 *
 */
public class JDBCUtils {
    //读取的是C3P0-config默认配置创建数据库连接池对象
    private static DataSource ds = new ComboPooledDataSource();
    //获取数据库连接池对象
    public static DataSource getDataSource(){
        return ds;
    }
    //从池中获取连接
    public static Connection getConnection() throws SQLException{
        return ds.getConnection();
    }    
}

 

<?xml version="1.0" encoding="UTF-8"?>
<c3p0-config>
    <!-- 默认配置，当使用ComboPooledDataSource无参构造器时，使用的就是这个配置 -->
    <default-config>
        <!-- 基本配置 -->
        <property name="jdbcUrl">jdbc:mysql://localhost:3306/linkman?characterEncoding=UTF-8</property>
        <property name="driverClass">com.mysql.jdbc.Driver</property>
        <property name="user">root</property>
        <property name="password">123456</property>
        <!-- 每次增量，当需要创建Connection对象时，一次创建几个 -->
        <property name="acquireIncrement">3</property>
        <!-- 当创建池对象后，池中应该有几个Connection对象 -->
        <property name="initialPoolSize">10</property>
        <!-- 池中最少Connection个数，如果少于这个值，就会创建Connection -->
        <property name="minPoolSize">2</property>
        <!-- 池中最大连接个数 -->
        <property name="maxPoolSize">10</property>
    </default-config>
</c3p0-config>

该工程需要的jar包：

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