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當前,我加載下面的自定義驅動程序(TestDriver.java),獲取連接,創建語句,執行查詢,獲取結果並關閉連接。我打開並關閉每個查詢的連接。這是常見的做法還是有共享開放連接的標準方式?自定義java.sql.Driver實現連接處理
public static void main(String[] args) {
Class.forName("com.sql.TestDriver");
java.sql.Connection conn = DriverManager.getConnection("jdbc:test://8888/connectme", props);
Statement stmt = conn.createStatement;
ResultSet rs = stmt.executeQuery("select * from table");
//loop through rs and pull out needed data
conn.close();
}
public class TestDriver implements java.sql.Driver{
private final TestSchema schema;
private Properties props = null;
static {
try {
DriverManager.registerDriver(new TestDriver());
} catch (SQLException e) {
e.printStackTrace();
}
protected TestDriver() throws SQLException {
schema = TestSchemaFactory.getInstance().getDbSchemaFromFile(SCHEMA_FILE);
//loads in and parses a file containing tables, columns used for business logic
}
public Connection connect(String url, Properties info)
throws SQLException {
TestSqlConnection conn=null;
//connect logic here
return conn; //will return an instance of TestSqlConnection
}
@Override
public boolean jdbcCompliant() {
return false;
}
}
偉大的評論。我的Java主只是一個例子。你所有的評論都是有效的。 – c12 2012-02-16 02:38:26