简单的JAVA员工信息管理系统源码

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// 项目目标：建立员工管理系统第一个版本。
// 实现图形用户界面的员工信息查询、增、删、改；与数据库建立，并将修改结果时时保存到数据库。
3 G2 w2 I: O( E4 X. B// 模块：1.GUI界面 2.数据库连接 3.查询 4.增、5删 6改(操作数据库）

import java.sql.*;
) o$ V3 |* {0 g. [# w6 L6 {import java.awt.*;
/ z# M% t3 e/ `0 B. G, nimport java.awt.event.*;

import javax.swing.*;

public class EmpManageSys implements ActionListener {
Connection con;
( c0 W) a# x; C4 a5 H. tStatement stmt;
5 z! o4 B% d. mString sql;
ResultSet rs;
$ d/ |/ p$ H* N, E1 uStringBuffer sb = new StringBuffer();

JTextField jtf2 = new JTextField("张飞",10);

JTextField jtf3 = new JTextField(10);

JTextField jtf4 = new JTextField(10);

JTextField jtf7 = new JTextField(10);

JTextField jtf5 = new JTextField(10);

JTextField jtf6 = new JTextField(10);

JTextField jtf8 = new JTextField(10);

JTextField jtf9 = new JTextField(10);

JTextArea jta10 = new JTextArea(50, 40);

public void actionPerformed(ActionEvent e) {
* J2 [: _4 D0 \. S3 ]4 c( IString str = e.getActionCommand();
( F  g) a% K! f" zif ("查询".equals(str)) {

//if check the button of 查询，then go to method of searchEmp()
% N1 E8 l/ i; m( x: ^searchEmp();
% S+ X; t+ w' S} else if ("增加".equals(str)) {

//if check the button of 增加，then go to method of addEmp()
addEmp();
} else if ("修改".equals(str)) {

//if check the button of 修改，then go to method of alterEmp()
. N* s  a& _. m9 {' I& d) aalterEmp();
( k4 A4 H' n# r% y' ^} else if ("撤除".equals(str)) {

//if check the button of 撤除，then go to method of deleteEmp()
deleteEmp();
4 M; e3 Y3 ~! H6 O( K" w6 l, Q; ?}
}

//this is the constructor.

EmpManageSys() {
createGUI();
, X6 w; p4 g% r5 R$ LconnectToDataBase();
* S7 v6 z6 L8 V0 j- L0 N$ v// searchEmp();
// addEmp();
6 _( X+ ^, k2 q: w7 k6 J. w// deleteEmp();
alterEmp();
5 f- r3 S& D& E4 f; e/ G8 ?}

//connect to the database by using the method getConnection from the class of JdbcUtil.

//You can find the class of JdbcUtil at the button of this page.

public Connection connectToDataBase() {
con = JdbcUtil.getConnection();
" `0 r8 ]# Q; P$ X+ d6 HSystem.out.println(con);
return con;

}

public void searchEmp() {
jta10.setText("");
try {
$ i% ~" V9 Q* c, Jstmt = con.createStatement();
// sql = "select * from Mstar where id=" + jtf3.getText();
// sql1="select * from sd100343 where ="+jtf3.getText();
sql = "select * from Mstar where chineseName="
6 `- ?: H' S4 r. W" b2 \+ jtf2.getText().toLowerCase().trim() + "or id="
+ J" {1 f' \, d2 s2 p* H5 E$ B+ jtf3.getText().toLowerCase().trim() + "or engName="
' L& s/ |6 X* L) ^  L+ jtf4.getText().toLowerCase().trim() + "or UNIT="
- Z7 Y( r) G. \  W& c% v+ Y+ jtf5.getText().toLowerCase().trim() + "or TEAM="
+ jtf6.getText().toLowerCase().trim() + "or Phone="
+ jtf7.getText().toLowerCase().trim() + "or region="
; x- C, P& H" H+ jtf8.getText().toLowerCase().trim() + "or busStation="
* W8 \* t6 D: `: S+ jtf9.getText().toLowerCase().trim();
stmt.executeQuery(sql);
rs = stmt.getResultSet();
9 @% o- g8 [2 b: v! B+ g9 O0 MResultSetMetaData meta = rs.getMetaData();
1 {4 C2 D1 U- r6 a. [( Kint cols = meta.getColumnCount();
& K, k6 t% z$ f- H9 V8 F( Gwhile (rs.next()) {
) C* |: w1 V+ {, f3 Jfor (int i = 1; i <= cols; i++) {
& T3 Q4 e! B5 Asb.append(" " + meta.getColumnName(i) + " =");
sb.append(rs.getString(i));
/ F  _/ M1 G& q8 ?6 A}
sb.append("\n");
jta10.setText(sb.toString());
/ d9 |' @0 r4 f, I2 |7 J}
} catch (SQLException e11) {
e11.printStackTrace();
}

}

public void addEmp() {
try {
1 h. e9 e+ ^9 b6 Bstmt = con.createStatement();
sql = "update Mstar values(" + jtf2.getText() + jtf3.getText()
. v. H% A: l8 l: r& z5 X+ jtf4.getText() + jtf5.getText() + jtf6.getText()
; J  d# L3 a9 ~! c( U. i+ jtf7.getText() + jtf8.getText() + jtf9.getText() + ")";
( t- r9 }8 E; \6 Rint i = stmt.getUpdateCount();
9 ?0 F* v% Z7 yif ((jtf2.getText() != null) && (jtf4.getText() != null)
&& (jtf6.getText() != null) && (jtf7.getText() != null)) {
6 T7 y# z  i; _9 h% Y  q1 w1 ustmt.executeUpdate(sql);
5 A4 V- y! h) [: {jta10.setText("添加记录成功" + i + "条");
: Y. d5 M# v4 ?: D7 B' l$ S& p) h} else {
jta10.setText("带*号项为添加记录时不能为空");
0 a6 a, L% o+ S) [6 F}
4 z4 d% r7 O0 O7 d} catch (SQLException e1) {
5 g% _) i1 g8 S7 de1.printStackTrace();
- h, v' i, A! y9 [}
}

public void deleteEmp() {
( Y+ }( ~8 \  E% {  I7 bsearchEmp();
+ _) ^+ M: ~/ f' J" s  Stry {
stmt = con.createStatement();
. E9 J2 ]+ i+ D. T8 ^' F! p1 Rsql = "delete from Mstar where chineseName="
+ jtf2.getText().toLowerCase().trim() + "or id="
% l9 Y) `; {7 a/ f: D+ jtf3.getText().toLowerCase().trim() + "or engName="
+ jtf4.getText().toLowerCase().trim() + "or UNIT="
+ jtf5.getText().toLowerCase().trim() + "or TEAM="
+ jtf6.getText().toLowerCase().trim() + "or Phone="
+ jtf7.getText().toLowerCase().trim() + "or region="
+ jtf8.getText().toLowerCase().trim() + "or busStation="
+ jtf9.getText().toLowerCase().trim();
$ j' P* G2 ?& X: ^* z$ H* z1 f: Vstmt.executeUpdate(sql);
int i = stmt.getUpdateCount();
jta10.setText("撤除操作成功" + i + "条");
: Z+ M$ D& @! [) R' W$ y} catch (SQLException e) {
e.printStackTrace();
}

}

public void alterEmp() {
# q3 }7 ^. ]4 j. b4 x. I1 OsearchEmp();
sql = "update Mstar set chineseName="
+ jtf2.getText().toLowerCase().trim() + "and id="
& {& q9 ?/ l. p$ C5 ?) K+ jtf3.getText().toLowerCase().trim() + "and engName="
/ F9 M# {& j0 Y* F& z" o+ jtf4.getText().toLowerCase().trim() + "and UNIT="
# g; @2 c+ ^3 D* @+ jtf5.getText().toLowerCase().trim() + "and TEAM="
+ jtf6.getText().toLowerCase().trim() + "and Phone="
+ jtf7.getText().toLowerCase().trim() + "and region="
0 M$ I4 w0 B8 W2 s+ jtf8.getText().toLowerCase().trim() + "and busStation="
+ jtf9.getText().toLowerCase().trim();

int i = 0;
$ g. L/ E. a$ [5 D! M& Gtry {
stmt.executeUpdate(sql);
- w$ ]+ N! P' o5 m0 i" r  ^i = stmt.getUpdateCount();
} catch (SQLException e) {
$ i1 l! y& A5 i  Y# B  ]2 Ve.printStackTrace();
}
1 \+ \4 f4 V3 t7 o$ q) a/ Z$ ljta10.setText("修改操作成功" + i + "条");
* X7 i% o9 R$ D# `$ I! E+ M}

public void createGUI() {
JFrame jf = new JFrame("员工信息管理系统");
jf.setLayout(new GridLayout(2, 1));
& ?2 G8 Q% m5 R3 E) T7 \// jf.setLayout(new GridLayout(10,2));
6 C# A+ t; [1 M* [' U3 {4 s: ]9 \JPanel jp00 = new JPanel(new GridLayout(5, 4));

JPanel jp1 = new JPanel();
) r; f& A! _: O$ u  P/ T1 NJButton jb11 = new JButton("查询");
jb11.addActionListener(this);
JButton jb12 = new JButton("增加");
9 _% E2 r. n, t2 g' b; Xjb12.addActionListener(this);
jp1.add(jb11);
jp1.add(jb12);
& H+ X. ~2 @; z% K' P6 ijp00.add(jp1);
JPanel jp11 = new JPanel();
JButton jb111 = new JButton("修改");
6 W& z4 ]% N) O$ S- F! Jjb111.addActionListener(this);
2 h+ w( u, |' b  HJButton jb112 = new JButton("撤除");
jb112.addActionListener(this);
jp11.add(jb111);
jp11.add(jb112);
# m7 i5 ^' Y8 p: Z7 {) j7 q, wjp00.add(jp11);
' O: k! t' i& f# X) X$ [2 o2 ?JPanel jp2 = new JPanel();
JLabel jl2 = new JLabel("中 文 名 * ");
/ I& t" M' g2 \+ }jp2.add(jl2);
jp2.add(jtf2);
; ~7 q: F: C, w. t) N5 o/ U) \jp00.add(jp2);
) s' y  G& z: D$ CJPanel jp3 = new JPanel();
JLabel jl3 = new JLabel("工 号 ");
jp3.add(jl3);
! {' _7 R: }0 f0 ]% c* `( `, x0 R( Rjp3.add(jtf3);
1 w# A) b: g6 a3 _4 n. V8 Wjp00.add(jp3);
/ o  `, a3 r1 D- xJPanel jp4 = new JPanel();
. H  t, S: m. A+ I: \JLabel jl4 = new JLabel("EngName*");
3 }2 J; C1 \% `* Vjp4.add(jl4);
jp4.add(jtf4);
/ s9 e# Y: }2 `0 J- Gjp00.add(jp4);
JPanel jp5 = new JPanel();
/ J0 e4 b  O# e# N8 p' M6 BJLabel jl5 = new JLabel("UNIT ");
) f  |+ P1 A- i, }: E, rjp5.add(jl5);
jp5.add(jtf5);
4 B! R5 h8 ~0 |& N- ajp00.add(jp5);
( Z& Y5 p' N; \7 `! L8 y# u9 BJPanel jp6 = new JPanel();
JLabel jl6 = new JLabel("TEAM* ");
jp6.add(jl6);
jp6.add(jtf6);
jp00.add(jp6);
JPanel jp7 = new JPanel();
7 U4 R7 H! k( M- N, u1 s% FJLabel jl7 = new JLabel("Phone* ");
jp7.add(jl7);
jp7.add(jtf7);
jp00.add(jp7);
# ~" R1 A$ @0 zJPanel jp8 = new JPanel();
JLabel jl8 = new JLabel("区域 ");
jp8.add(jl8);
jp8.add(jtf8);
jp00.add(jp8);
JPanel jp9 = new JPanel();
, g. V* F5 Z1 y! I2 b1 _JLabel jl9 = new JLabel("公交站 ");
jp9.add(jl9);
# S, g" a; }& Z! U9 j4 q) R$ Bjp9.add(jtf9);
jp00.add(jp9);
. v1 c/ b! Y6 e/ R% ?jf.add(jp00);
" O/ S/ b! [1 T$ f6 GJPanel jp01 = new JPanel();
/ Q) X6 v0 O& G: V1 a9 x: kjta10.setText("--用户使用手册-- \n1、查询：选择一个字段，如 EngName 在文本框中输入相应内容，点击查询\n2、增加：在各个文本框中输入相应内容后，点击增加。\n3、修改：先查询到你要的记录，在更改相应内容，点击修改。\n4、撤除：类似于修改操作");
jp01.add(jta10);
jf.add(jp01);
* h0 A) V% A5 @( q6 gjf.setSize(700, 500);
jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
4 H' R  q+ B+ d% ]) A8 N9 A  \9 t: Mjf.setVisible(true);

}

public static void main(String[] args) {
new EmpManageSys();
' i( T3 h- V& r& q0 X}
}

4 _" b2 M; }9 d$ H

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//---------------------------------------------------------------------
3 P1 C5 @8 X! vSQL工具类JdbcUtil：用于实现数据库连接和数据库关闭。上面程序用到了这个类
import java.sql.*;
public class JdbcUtil
{
4 H7 f0 D/ x+ D0 i& m9 e//load driver from file
" j4 {- O' C7 L2 j- p& ]static{
# ~. |) F3 \/ ltry{
, W+ q7 }& V( \5 uString driverName =
"oracle.jdbc.driver.OracleDriver";
Class.forName(driverName);
; R: O: G5 K/ C& _}catch(Exception e){
e.printStackTrace();
}
}
//establish connection
1 x+ c" d' o7 b* |& p. t  z. l. B% apublic static Connection getConnection(){
* r4 S* t# f: c' y* E& BConnection con = null;
try{
String url =
"jdbcracle:thin192.168.0.26:1521:tarena";
String usr = "openlab";
" H- |3 k3 j" u, }9 nString pwd = "open123";
7 D" k' K* S4 @con = DriverManager.getConnection(
+ O+ _3 t! F7 `) u6 A4 \$ Ourl,usr,pwd);
1 N4 X4 }0 W( K5 S}catch(Exception e){
e.printStackTrace();
  @: {; O2 @" r3 p}
) V0 Z/ q4 x: Creturn con;
}

//close resultSet,statement and connection
public static void close(ResultSet rs,Statement stmt,Connection con){
try{
if(rs!=null) rs.close();
}catch(Exception ex){
& Q: e3 L2 U1 y; q) rex.printStackTrace();
% A7 L2 B3 ?1 l) L5 V}
+ ^8 v' m2 @8 b. \+ n  ktry{
if(stmt!=null) stmt.close();
}catch(Exception ex){
) O7 i& t# M5 [ex.printStackTrace();
}
try{
if(con!=null) con.close();
( S0 I, G  f( r) C: q. Y}catch(Exception ex){
2 b3 j" n, N' g4 A& z+ V# |ex.printStackTrace();
}
4 Y0 Y9 C  w9 P. h# ~% t( _}
}