{
private static Connection conn
private ConnectDB(){}
public static Connection getConnection()
{
if(conn == null)
{
DataSource ds = null
try
{
欢迎分享,转载请注明来源:内存溢出
{
private static Connection conn
private ConnectDB(){}
public static Connection getConnection()
{
if(conn == null)
{
DataSource ds = null
try
{
欢迎分享,转载请注明来源:内存溢出
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