一、Erklärung
复制代码代码如下:
java.sql.* importieren;
öffentliche Klasse TestJDBC {
public static void main(String[] args) {
Verbindung oracle_conn = null;
Anweisung oracle_stmt = null;
ResultSet oracle_rs = null;
Verbindung mssql_conn = null;
Anweisung mssql_stmt = null;
ResultSet mssql_rs = null;
versuchen {
Class.forName("oracle.jdbc.driver.OracleDriver");
oracle_conn = DriverManager.getConnection("jdbc:oracle:thin:@192.168.0.215:1521:orcl", "username", "password");
oracle_stmt = oracle_conn.createStatement();
Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");
mssql_conn = DriverManager.getConnection("jdbc:sqlserver://192.168.0.213:1433;DatabaseName=VIS", "username", "password");
mssql_stmt = mssql_conn.createStatement();
mssql_rs = mssql_stmt.executeQuery("select * from VideoBaseInfo");
while(mssql_rs.next()) {
System.out.println("VideoId anzeigen:" + mssql_rs.getInt("VideoId") + "Überprüfen Sie...");
oracle_stmt.executeUpdate("In VIDEO_BASEINFO-Werte einfügen("
+ mssql_rs.getInt("VideoId") + ","'"
+ mssql_rs.getString("VideoName") + "','"
+ mssql_rs.getString("VideoVersion") + "',"
+ mssql_rs.getInt("VideoMp4Items") + ","
+ mssql_rs.getInt("VideoRmvbItems") + ","'"
+ mssql_rs.getString("VideoAliasName") + "','"
+ mssql_rs.getString("VideoAge") + "'"
+ ")");
}
} Catch (ClassNotFoundException e) {
e.printStackTrace();
} Catch (SQLException e) {
e.printStackTrace();
} Endlich {
versuchen {
if(oracle_rs != null) {
oracle_rs.close();
oracle_rs = null;
}
if(oracle_stmt != null) {
oracle_stmt.close();
oracle_stmt = null;
}
if(oracle_conn != null) {
oracle_conn.close();
oracle_conn = null;
}
if(mssql_rs != null) {
mssql_rs.close();
mssql_rs = null;
}
if(mssql_stmt != null) {
mssql_stmt.close();
mssql_stmt = null;
}
if(mssql_conn != null) {
mssql_conn.close();
mssql_conn = null;
}
} Catch (SQLException e) {
e.printStackTrace();
}
}
}
}
二、PreparedStatement
复制代码代码如下:
java.sql.* importieren;
öffentliche Klasse TestPreparedStatement {
public static void main(String[] args) {
Verbindung oracle_conn = null;
PreparedStatement oracle_stmt = null;
ResultSet oracle_rs = null;
Verbindung mssql_conn = null;
Anweisung mssql_stmt = null;
ResultSet mssql_rs = null;
versuchen {
Class.forName("oracle.jdbc.driver.OracleDriver");
oracle_conn = DriverManager.getConnection("jdbc:oracle:thin:@192.168.0.215:1521:orcl", "username", "password");
oracle_stmt = oracle_conn.prepareStatement("in Video_ItemInfo-Werte einfügen (?, ?, ?, ?, ?, ?, ?, ?, ?)");
Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");
mssql_conn = DriverManager.getConnection("jdbc:sqlserver://192.168.0.213:1433;DatabaseName=VIS", "username", "password");
mssql_stmt = mssql_conn.createStatement();
mssql_rs = mssql_stmt.executeQuery("select * from VideoItemInfo");
while(mssql_rs.next()) {
System.out.println("Neuer ItemIndex:" + mssql_rs.getInt("ItemIndex") + "Erweiterter Eintrag...");
oracle_stmt.setInt(1, mssql_rs.getInt("ItemIndex"));
oracle_stmt.setInt(2, mssql_rs.getInt("VideoId"));
oracle_stmt.setString(3, mssql_rs.getString("VideoItemName"));
oracle_stmt.setString(4, mssql_rs.getString("VideoExtName"));
oracle_stmt.setDouble(5, mssql_rs.getDouble("VideoSize"));
oracle_stmt.setString(6, mssql_rs.getString("VideoPath"));
oracle_stmt.setString(7, mssql_rs.getString("VideoType"));
oracle_stmt.setDate(8, mssql_rs.getDate("VideoDate"));
oracle_stmt.setString(9, mssql_rs.getString("ApplicationWay"));
oracle_stmt.executeUpdate();
}
System.out.println("Video_ItemInfo anzeigen");
} Catch (ClassNotFoundException e) {
e.printStackTrace();
} Catch (SQLException e) {
e.printStackTrace();
} Endlich {
versuchen {
if(oracle_rs != null) {
oracle_rs.close();
oracle_rs = null;
}
if(oracle_stmt != null) {
oracle_stmt.close();
oracle_stmt = null;
}
if(oracle_conn != null) {
oracle_conn.close();
oracle_conn = null;
}
if(mssql_rs != null) {
mssql_rs.close();
mssql_rs = null;
}
if(mssql_stmt != null) {
mssql_stmt.close();
mssql_stmt = null;
}
if(mssql_conn != null) {
mssql_conn.close();
mssql_conn = null;
}
} Catch (SQLException e) {
e.printStackTrace();
}
}
}
}
三、CallableStatement
复制代码代码如下:
java.sql.* importieren;
öffentliche Klasse TestProc {
/**
* @param args
*/
public static void main(String[] args) löst eine Ausnahme aus {
Class.forName("oracle.jdbc.driver.OracleDriver");
Connection conn = DriverManager.getConnection("jdbc:oracle:thin:@192.168.0.1:1521:SXT", "scott", "tiger");
CallableStatement cstmt = conn.prepareCall("{call p(?, ?, ?, ?)}");
cstmt.registerOutParameter(3, Types.INTEGER);
cstmt.registerOutParameter(4, Types.INTEGER);
cstmt.setInt(1, 3);
cstmt.setInt(2, 4);
cstmt.setInt(4, 5);
cstmt.execute();
System.out.println(cstmt.getInt(3));
System.out.println(cstmt.getInt(4));
cstmt.close();
conn.close();
}
}
四、Batch
复制代码代码如下:
java.sql.* importieren;
öffentliche Klasse TestBatch {
public static void main(String[] args) löst eine Ausnahme aus {
Class.forName("oracle.jdbc.driver.OracleDriver");
Connection conn = DriverManager.getConnection("jdbc:oracle:thin:@192.168.0.1:1521:SXT", "scott", "tiger");
/*
Anweisung stmt = conn.createStatement();
stmt.addBatch("In Dept2-Werte einfügen (51, '500', 'haha')");
stmt.addBatch("In Dept2-Werte einfügen (52, '500', 'haha')");
stmt.addBatch("In Dept2-Werte einfügen (53, '500', 'haha')");
stmt.executeBatch();
stmt.close();
*/
PreparedStatement ps = conn.prepareStatement("In Dept2-Werte einfügen (?, ?, ?)");
ps.setInt(1, 61);
ps.setString(2, "haha");
ps.setString(3, "bj");
ps.addBatch();
ps.setInt(1, 62);
ps.setString(2, "haha");
ps.setString(3, "bj");
ps.addBatch();
ps.setInt(1, 63);
ps.setString(2, "haha");
ps.setString(3, "bj");
ps.addBatch();
ps.executeBatch();
ps.close();
conn.close();
}
}
五、Transaktion
复制代码代码如下:
java.sql.* importieren;
öffentliche Klasse TestTransaction {
public static void main(String[] args) {
Verbindungsverbindung = null;
Anweisung stmt = null;
versuchen {
Class.forName("oracle.jdbc.driver.OracleDriver");
conn = DriverManager.getConnection("jdbc:oracle:thin:@127.0.0.1:1521:SXT", "scott", "tiger");
conn.setAutoCommit(false);
stmt = conn.createStatement();
stmt.addBatch("In Dept2-Werte einfügen (51, '500', 'haha')");
stmt.addBatch("In Dept2-Werte einfügen (52, '500', 'haha')");
stmt.addBatch("In Dept2-Werte einfügen (53, '500', 'haha')");
stmt.executeBatch();
conn.commit();
conn.setAutoCommit(true);
} Catch (ClassNotFoundException e) {
e.printStackTrace();
} Catch(SQLException e) {
e.printStackTrace();
versuchen {
if(conn != null)
{
conn.rollback();
conn.setAutoCommit(true);
}
} Catch (SQLException e1) {
e1.printStackTrace();
}
}Endlich {
versuchen {
if(stmt != null)
stmt.close();
if(conn != null)
conn.close();
} Catch (SQLException e) {
e.printStackTrace();
}
}
}
}
六、ScrollResultSet
复制代码代码如下:
java.sql.* importieren;
öffentliche Klasse TestScroll {
public static void main(String args[]) {
versuchen {
new oracle.jdbc.driver.OracleDriver();
String url = "jdbc:oracle:thin:@192.168.0.1:1521:SXT";
Verbindung conn = DriverManager
.getConnection(url, „scott“, „tiger“);
Anweisung stmt = conn.createStatement(
ResultSet.TYPE_SCROLL_INSENSITIVE,
ResultSet.CONCUR_READ_ONLY);
ResultSet rs = stmt
.executeQuery("select * from emp order by sal");
rs.next();
System.out.println(rs.getInt(1));
rs.last();
System.out.println(rs.getString(1));
System.out.println(rs.isLast());
System.out.println(rs.isAfterLast());
System.out.println(rs.getRow());
rs. previous();
System.out.println(rs.getString(1));
rs.absolute(6);
System.out.println(rs.getString(1));
rs.close();
stmt.close();
conn.close();
} Catch (SQLException e) {
e.printStackTrace();
}
}
}
Beispiel: UpdateResultSet
复制代码代码如下:
java.sql.* importieren;
öffentliche Klasse TestUpdataRs {
public static void main(String args[]){
versuchen{
new oracle.jdbc.driver.OracleDriver();
String url="jdbc:oracle:thin:@192.168.0.1:1521:SXT";
Verbindung conn=DriverManager.getConnection(url,"scott","tiger");
Anweisung stmt=conn.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE,ResultSet.CONCUR_UPDATABLE);
ResultSet rs=stmt.executeQuery("select * from emp2");
rs.next();
//更新一行数据
rs.updateString("ename","AAAA");
rs.updateRow();
//插入新行
rs.moveToInsertRow();
rs.updateInt(1, 9999);
rs.updateString("ename","AAAA");
rs.updateInt("mgr", 7839);
rs.updateDouble("sal", 99,99);
rs.insertRow();
//将光标移动到新建的行
rs.moveToCurrentRow();
//删除行
rs.absolute(5);
rs.deleteRow();
//取消更新
//rs.cancelRowUpdates();
}catch(SQLException e){
e.printStackTrace();
}
}
}