JAVA连接SqlServer数据库

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.text.SimpleDateFormat;
import java.util.Date;

public class Test {

private static String driverName = "com.microsoft.sqlserver.jdbc.SQLServerDriver";
private static String dbURL = "jdbc:sqlserver://localhost:1433;DatabaseName=RMS_db";
private static String userName = "sa";
private static String userPwd = "root";

public static void main(String[] srg) {

try {
Class.forName(driverName);
Test.addTempBill();
} catch (ClassNotFoundException e) {
e.printStackTrace();
}
}

/**
* 添加一个空桌订单
*/
public static void addTempBill() {
Connection conn = null;
Statement state = null;
ResultSet result = null;
try {
conn = DriverManager.getConnection(dbURL, userName, userPwd);
state = conn.createStatement();

// 获取最后一个未付款订单
result = state
.executeQuery("select top 1 BillID from bi_TempBill order by CreateTime desc");
String code = "0001";
while (result.next()) {

String BillID = result.getString("BillID");
int id = Integer.parseInt(BillID.split("-")[2]);
id++;
code = String.valueOf(id);
if (code.length() < 4) {

String temp = "";
for (int i = code.length(); i < 4; i++) {
temp += "0";
}

code = temp + code;
}

SimpleDateFormat sdf = new SimpleDateFormat("yyMMdd");
code = "XS-" + sdf.format(new Date()) + "-" + code;
}

Date date = new Date();
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
String dateStr = sdf.format(date);


int re = state
.executeUpdate("insert into bi_TempBill (BillID,CreateTime) values('"
+ code + "','" + dateStr + "') ");

System.out.println(re);

} catch (SQLException e) {

addTempBill();

} finally {

try {
result.close();
state.close();
conn.close();
} catch (Exception e) {
}
}
}
}