對數(shù)據(jù)庫進(jìn)行增刪改查?
專注于為中小企業(yè)提供成都網(wǎng)站制作、成都做網(wǎng)站、外貿(mào)營銷網(wǎng)站建設(shè)服務(wù),電腦端+手機(jī)端+微信端的三站合一,更高效的管理,為中小企業(yè)云岡免費(fèi)做網(wǎng)站提供優(yōu)質(zhì)的服務(wù)。我們立足成都,凝聚了一批互聯(lián)網(wǎng)行業(yè)人才,有力地推動了近千家企業(yè)的穩(wěn)健成長,幫助中小企業(yè)通過網(wǎng)站建設(shè)實現(xiàn)規(guī)模擴(kuò)充和轉(zhuǎn)變。
以下是 sql server 2013+java.實現(xiàn)的是對MSC對象的增刪改查.
需要下載連接驅(qū)動程序:com.microsoft.sqlserver.jdbc.SQLServerDriver
網(wǎng)上搜一下就行
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
class MSC
{
public String MscID;
public String MscName;
public String MscCompany;
public float MscLongitude;
public float MscLatitude;
public float MscAltitude;
public MSC(String MscID, String MscName, String MscCompany,
float MscLongitude, float MscLatitude,float MscAltitude){
this.MscID = MscID;
this.MscName = MscName;
this.MscCompany = MscCompany;
this.MscLongitude =MscLongitude;
this.MscLatitude = MscLatitude;
this.MscAltitude = MscAltitude;
}
}
public class sqlserverjdbc {
public Connection getConnection(){
String driverName = "com.microsoft.sqlserver.jdbc.SQLServerDriver"; //加載JDBC驅(qū)動
String dbURL = "jdbc:sqlserver://localhost:1433; DatabaseName=gsm"; //連接服務(wù)器和數(shù)據(jù)庫sample
String userName = "sa"; //默認(rèn)用戶名
String userPwd = "123"; //密碼
Connection dbConn = null;
try {
Class.forName(driverName);
dbConn =DriverManager.getConnection(dbURL, userName, userPwd);
} catch (Exception e) {
e.printStackTrace();
}
return dbConn;
}
public void printUserInfo(){
Connection con = getConnection();
Statement sta = null;
ResultSet rs = null;
System.out.println("打印表格MSC信息");
try {
sta = con.createStatement();
rs = sta.executeQuery("select * from MSC信息");
System.out.println("MscID\tMscName\tMscCompany\tMscLongitude\tMscLatitude\tMscAltitude");
while(rs.next()){
System.out.println(rs.getString("MscID")+"\t"+
rs.getString("MscName")+"\t"+
rs.getString("MscCompany")+"\t"+
rs.getFloat("MscLongitude")+"\t"+
rs.getFloat("MscLatitude")+"\t"+
rs.getFloat("MscAltitude"));
}
con.close();
sta.close();
rs.close();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
System.out.println("打印完成\n");
}
public void delete(String MscID){
Connection con = getConnection();
String sql = "delete from MSC信息 where MscID = " + MscID;
PreparedStatement pst;
System.out.println("刪除表格MSC信息中 ID = "+MscID+"的記錄");
try {
pst = con.prepareStatement(sql);
pst.execute();
pst.close();
con.close();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
System.out.println("記錄刪除失?。。?!");
}
System.out.println("記錄刪除成功?。。n");
}
public void insert(MSC msc){
Connection con = getConnection();
String sql = "insert into MSC信息 values(?,?,?,?,?,?)";
PreparedStatement pst;
System.out.println("插入一條記錄");
try {
pst = con.prepareStatement(sql);
pst.setString(1, msc.MscID);
pst.setString(2, msc.MscName);
pst.setString(3, msc.MscCompany);
pst.setFloat(4, msc.MscLongitude);
pst.setFloat(5, msc.MscLatitude);
pst.setFloat(6, msc.MscAltitude);
pst.execute();
pst.close();
con.close();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
System.out.println("插入失?。。?!");
}
System.out.println("插入成功?。?!\n");
}
//更新MscID的MscName
public void updateMscName(String MscID, String MscName){
Connection con = getConnection();
String sql = "update MSC信息 set MscName = ? where MscID = ?";
PreparedStatement pst;
System.out.println("修改一條記錄");
try {
pst = con.prepareStatement(sql);
pst.setString(1, MscName);
pst.setString(2, MscID);
pst.execute();
pst.close();
con.close();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
System.out.println("修改失?。。。?);
}
System.out.println("修改成功?。?!\n");
}
public static void main(String args[]){
sqlserverjdbc sql = new sqlserverjdbc();
sql.printUserInfo();
sql.delete("1111");
sql.printUserInfo();
sql.updateMscName("5215", "聯(lián)想");
sql.printUserInfo();
sql.insert(new MSC("1111", "中興" ," 中興", (float)12.2, (float)3.4,(float)45.5));
sql.printUserInfo();
}
}
class?Employee?{
private?String?name;
private?String?department;
private?double?salary;
//構(gòu)造方法
public?Employee(String?name,?String?department,?double?salary)?{
this.name?=?name;
this.department?=?department;
this.salary?=?salary;
}
public?String?toString()?{
return?"姓名:"?+?name?+?"\t部門:"?+?department?+?"\t工資:"?+?salary;
}
public?void?raiseSalary(double?per)?{
this.salary?=?salary?+?salary?*?per;
}
public?String?getName()?{
return?name;
}
public?void?setName(String?name)?{
this.name?=?name;
}
public?String?getDepartment()?{
return?department;
}
public?void?setDepartment(String?department)?{
this.department?=?department;
}
public?double?getSalary()?{
return?salary;
}
public?void?setSalary(double?salary)?{
this.salary?=?salary;
}
}
public?class?TestEmployee?{//測試類
public?static?void?main(String[]?args)?{
Employee?e1?=?new?Employee("張三",?"技術(shù)開發(fā)部",?5000);
Employee?e2?=?new?Employee("趙四",?"后勤服務(wù)部",?3800);
Employee?e3?=?new?Employee("王五",?"產(chǎn)品營銷部",?6800);
System.out.println(e1?+?"\n"?+?e2?+?"\n"?+?e3);
double?per?=?0.07;
e1.raiseSalary(per);
e2.raiseSalary(per);
e3.raiseSalary(per);
System.out.println("==============加薪7%===============");
System.out.println(e1?+?"\n"?+?e2?+?"\n"?+?e3);
}
}
輸出
姓名:張三 部門:技術(shù)開發(fā)部 工資:5000.0
姓名:趙四 部門:后勤服務(wù)部 工資:3800.0
姓名:王五 部門:產(chǎn)品營銷部 工資:6800.0
==============加薪7%===============
姓名:張三 部門:技術(shù)開發(fā)部 工資:5350.0
姓名:趙四 部門:后勤服務(wù)部 工資:4066.0
姓名:王五 部門:產(chǎn)品營銷部 工資:7276.0
代碼一:
private Double weeklySalary;
代碼二:
public void setWeeklySalary(Double weeklySalary){
this.weeklySalary=weeklySalary;
}
代碼三:
private Double salary;
private Integer piece;
public PieceWorker (String name,Integer p,Double s) {
super(name);
setSalary(s);
setPiece(p);
}
public void setPiece(Integer p){
this.piece=p;
}
public void setSalary(Double s){
this.salary=s;
}
public double earnings() {
return piece*salary;
}
代碼四:
private Double salary;
private Integer hour;
public PieceWorker (String name,Integer h,Double s) {
super(name);
setSalary(s);
setHour(h);
}
public void setHour(Integer h){
this.hour=h;
}
public void setSalary(Double s){
this.salary=s;
}
public double earnings() {
return h*salary;
}
工資管理系統(tǒng)主要功能和特點(diǎn):
1 操作簡單方便
采用國際流行的下拉菜單,全WINDOWS操作形式,界面新穎,全面支持鼠標(biāo)操作,功能齊全。
2 任意設(shè)定工資項目
系統(tǒng)除姓名、人員編號、部門編號、部門名稱、應(yīng)發(fā)工資、實發(fā)工資、納稅等內(nèi)定項目不能刪除(長度可以改變)外,其它項目(如各種補(bǔ)貼及各種扣款)均可由用戶自行定義(包括增加、刪除、修改長度及小數(shù)位等),工資項目總數(shù)可多達(dá)255項。當(dāng)修改或刪除工資項目時,自動檢查工資計算中與該項目有關(guān)的計算公式,并作相應(yīng)處理。
3 任意定義工資計算公式
用戶可將某些工資項目(如加班費(fèi)、應(yīng)發(fā)工資、納稅等)定義為計算項目,然后定義其計算公式及使用條件,可滿足各種復(fù)雜的計算。
如: 項目 公式 條件
每日工資 基本工資/26
月加班費(fèi) 加班天數(shù)*每日工資 類別=
當(dāng)前名稱:工資調(diào)整系統(tǒng)JAVA代碼 工資管理系統(tǒng)java課設(shè)
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