Java实战之用Swing实现通讯录管理系统

一、系统介绍

 1.系统功能

• 登录系统
• 查询信息
• 新增信息
• 修改信息
• 删除信息

2.环境配置

jdk版本：1.8
mysql:8.0.13

3.数据库

/*
 navicat premium data transfer

 source server         : mysql
 source server type    : mysql
 source server version : 80013
 source host           : localhost:3306
 source schema         : swing_address

 target server type    : mysql
 target server version : 80013
 file encoding         : 65001

 date: 10/06/2021 23:56:16
*/

set names utf8mb4;
set foreign_key_checks = 0;

-- ----------------------------
-- table structure for my_address_book
-- ----------------------------
drop table if exists `my_address_book`;
create table `my_address_book`  (
  `id` int(11) not null auto_increment,
  `name` varchar(255) character set utf8 collate utf8_bin null default null,
  `sex` varchar(255) character set utf8 collate utf8_bin null default null,
  `telephone` varchar(255) character set utf8 collate utf8_bin null default null,
  `mail` varchar(255) character set utf8 collate utf8_bin null default null,
  `birthday` varchar(255) character set utf8 collate utf8_bin null default null,
  `note` varchar(255) character set utf8 collate utf8_bin null default null,
  primary key (`id`) using btree
) engine = innodb auto_increment = 5 character set = utf8 collate = utf8_bin row_format = compact;

-- ----------------------------
-- records of my_address_book
-- ----------------------------
insert into `my_address_book` values (2, '杨xx', '男', '18911616917', '[e-mail]', '20200107', 'xx');
insert into `my_address_book` values (3, '222', '女', '22', '22', '22', '22');
insert into `my_address_book` values (4, '1', '女', '1', '1', '1', '1');

-- ----------------------------
-- table structure for my_address_login
-- ----------------------------
drop table if exists `my_address_login`;
create table `my_address_login`  (
  `id` int(11) not null auto_increment,
  `username` varchar(255) character set utf8 collate utf8_bin null default null,
  `password` varchar(255) character set utf8 collate utf8_bin null default null,
  primary key (`id`) using btree
) engine = innodb auto_increment = 2 character set = utf8 collate = utf8_bin row_format = compact;

-- ----------------------------
-- records of my_address_login
-- ----------------------------
insert into `my_address_login` values (1, '1', '1');

set foreign_key_checks = 1;

4.工程截图

二、系统展示

1.登录页

2.主页

3.查询信息

4.新增信息

5.修改信息

三、部分代码

dbconn.java

package com.txl;

import java.sql.connection;
import java.sql.drivermanager;
import java.sql.resultset;
import java.sql.sqlexception;
import java.sql.statement;

public class dbconn {
	private static string drivername = "com.mysql.cj.jdbc.driver";
	private static string url = "jdbc:mysql://localhost:3306/swing_address?servertimezone=utc";
	private static string username = "root";
	private static string password = "admin";
	private connection conn;
	private statement stmt;

	public dbconn() {
		try {
			class.forname(drivername);
		} catch (classnotfoundexception e) {
			e.printstacktrace();
		}
	}

	/**
	 * 连接数据库
	 * 
	 * @return
	 * @throws sqlexception
	 */
	public connection getconnection() throws sqlexception {
		return drivermanager.getconnection(url, username, password);
	}

	/**
	 * 释放资源
	 */
	public void dispose() {
		try {
			if (conn != null) {
				conn.close();
			}
			if (stmt != null) {
				stmt.close();
			}
		} catch (sqlexception e) {
			e.printstacktrace();
		}
	}

}

login.java

package com.txl;

import java.awt.flowlayout;
import java.awt.event.mouseadapter;
import java.awt.event.mouseevent;
import java.sql.resultset;
import java.sql.sqlexception;
import java.sql.statement;
import java.util.vector;

import javax.swing.jlabel;
import javax.swing.joptionpane;
import javax.swing.jtextfield;
import javax.swing.jpasswordfield;
 
public class login {
	
	public static void main(string args[]) {
		login l=new login();
		l.showui();
	}
	
	public void showui() {
		javax.swing.jframe login=new javax.swing.jframe();
		login.settitle("登录通讯录");
		login.setsize(340,230);
		login.setdefaultcloseoperation(3);
		login.setlocationrelativeto(null);
		login.setresizable(false);
 
		java.awt.flowlayout fl=new java.awt.flowlayout(flowlayout.center,5,5);
		login.setlayout(fl);
			
		jlabel labname=new jlabel();
		labname.settext("用户名：");
		labname.setpreferredsize(new java.awt.dimension(60, 60));
		login.add(labname);
		
		jtextfield textname=new jtextfield();
		textname.setpreferredsize(new java.awt.dimension(250, 30));
		login.add(textname);
		jlabel labpassword=new jlabel();
		labpassword.settext("密     码：");
		labpassword.setpreferredsize(new java.awt.dimension(60, 60));
		login.add(labpassword);
		
		jpasswordfield jp=new jpasswordfield();
		jp.setpreferredsize(new java.awt.dimension(250, 30));
		login.add(jp);
		
		javax.swing.jbutton button=new javax.swing.jbutton();
		button.settext("登录");
		button.setpreferredsize(new java.awt.dimension(100, 40));
		login.add(button);
		login.setvisible(true);
		button.addmouselistener(new mouseadapter() {
			public void mouseclicked(mouseevent e) {
				
				
				dbconn dbconn = new dbconn();
				statement stmt = null;
				resultset rs = null;
				try {
					stmt = dbconn.getconnection().createstatement();
					rs = stmt.executequery("select * from my_address_login where username='"+textname.gettext()+"' and password='"+jp.gettext()+"'");
					if (rs.next()) {
						new myaddressbook();
						login.dispose();
					}else{
						joptionpane.showmessagedialog(null, "用户名或密码不正确!!!");
					}
					rs.close();
				} catch (sqlexception e1) {
					e1.printstacktrace();
				} finally {
					try {
						if (stmt != null) {
							stmt.close();
						}
						if (rs != null) {
							rs.close();
						}
					} catch (sqlexception e1) {
						e1.printstacktrace();
					}

				}
			}
		});
		
		
	}
}

test.java

package com.txl;

import java.sql.preparedstatement;
import java.sql.sqlexception;

import javax.swing.joptionpane;
import javax.swing.table.defaulttablemodel;
import javax.swing.table.tablecolumn;

public class test {
	public static void main(string[] args) {
		dbconn dbconn = new dbconn();;;;;
		try {
			for(int i =0 ;i<1000000;i++){
				string sql = "insert into student(name, age)values('xxx"+i+"',30)";
				preparedstatement pstmt = dbconn.getconnection().preparestatement(sql);
				system.out.println(sql);
				pstmt.execute(sql);
				pstmt.close();
			}
		} catch (sqlexception e) {
			// todo auto-generated catch block
			e.printstacktrace();
		} finally {
		}
	
	}
}

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