importjava.sql.Connection;importjava.sql.DriverManager;importjava.sql.PreparedStatement;importjava.sql.ResultSet;importjava.sql.ResultSetMetaData;importjava.sql.SQLException;public classOperateOracle {//定义连接所需的字符串//192.168.0.X是本机地址(要改成自己的IP地址)，1521端口号，XE是精简版Oracle的默认数据库名

private static String USERNAMR = "orcl";private static String PASSWORD = "orcl";private static String DRVIER = "oracle.jdbc.OracleDriver";private static String URL = "jdbc:oracle:thin:@192.168.0.X:1521:xe";//创建一个数据库连接

Connection connection = null;//创建预编译语句对象，一般都是用这个而不用Statement

PreparedStatement pstm = null;//创建一个结果集对象

ResultSet rs = null;/*** 向数据库中增加数据

* 首先获取表内数据总数,总数+1为新增数据的id值

*@paramstuName:学生姓名

*@paramgender:学生性别,1表示男性,2表示女性

*@paramage:学生年龄

*@paramaddress:学生住址*/

public void AddData(String stuName, int gender, intage, String address) {

connection=getConnection();//String sql =//"insert into student values('1','王小军','1','17','北京市和平里七区30号楼7门102')";

String sql = "select count(*) from student where 1 = 1";

String sqlStr= "insert into student values(?,?,?,?,?)";int count = 0;try{//计算数据库student表中数据总数

pstm =connection.prepareStatement(sql);

rs=pstm.executeQuery();while(rs.next()) {

count= rs.getInt(1) + 1;

System.out.println(rs.getInt(1));

}//执行插入数据操作

pstm =connection.prepareStatement(sqlStr);

pstm.setInt(1, count);

pstm.setString(2, stuName);

pstm.setInt(3, gender);

pstm.setInt(4, age);

pstm.setString(5, address);

pstm.executeUpdate();

}catch(SQLException e) {

e.printStackTrace();

}finally{

ReleaseResource();

}

}/*** 向数据库中删除数据

*@paramstuName:根据姓名删除数据*/

public voidDeleteData(String stuName) {

connection=getConnection();

String sqlStr= "delete from student where stu_name=?";

System.out.println(stuName);try{//执行删除数据操作

pstm =connection.prepareStatement(sqlStr);

pstm.setString(1, stuName);

pstm.executeUpdate();

}catch(SQLException e) {

e.printStackTrace();

}finally{

ReleaseResource();

}

}/*** 向数据库中修改数据

*@paramstuName:学生姓名,根据此值查询要修改的某行值

*@paramgender

*@paramage

*@paramaddress*/

public void UpdateData(String stuName, int gender, intage, String address) {

connection=getConnection();

String sql= "select id from student where 1 = 1 and stu_name = ?";

String sqlStr= "update student set stu_name=?,gender=?,age=?,address=? where id=?";int count = 0;try{//计算数据库student表中数据总数

pstm =connection.prepareStatement(sql);

pstm.setString(1, stuName);

rs=pstm.executeQuery();while(rs.next()) {

count= rs.getInt(1);

System.out.println(rs.getInt(1));

}//执行插入数据操作

pstm =connection.prepareStatement(sqlStr);

pstm.setString(1, stuName);

pstm.setInt(2, gender);

pstm.setInt(3, age);

pstm.setString(4, address);

pstm.setInt(5, count);

pstm.executeUpdate();

}catch(SQLException e) {

e.printStackTrace();

}finally{

ReleaseResource();

}

}/*** 向数据库中查询数据*/

public voidSelectData() {

connection=getConnection();

String sql= "select * from student where 1 = 1";try{

pstm=connection.prepareStatement(sql);

rs=pstm.executeQuery();while(rs.next()) {

String id= rs.getString("id");

String name= rs.getString("stu_name");

String gender= rs.getString("gender");

String age= rs.getString("age");

String address= rs.getString("address");

System.out.println(id+ "\t" + name + "\t" + gender + "\t"

+ age + "\t" +address);

}

}catch(SQLException e) {

e.printStackTrace();

}finally{

ReleaseResource();

}

}/*** 使用ResultSetMetaData计算列数*/

public voidSelectData2() {

connection=getConnection();

String sql= "select * from employees where 1 = 1";int count = 0;try{

pstm=connection.prepareStatement(sql);

rs=pstm.executeQuery();while(rs.next()) {

count++;

}

ResultSetMetaData rsmd=rs.getMetaData();int cols_len =rsmd.getColumnCount();

System.out.println("count=" + count + "\tcols_len=" +cols_len);

}catch(SQLException e) {

e.printStackTrace();

}finally{

ReleaseResource();

}

}/*** 获取Connection对象

*

*@return

*/

publicConnection getConnection() {try{

Class.forName(DRVIER);

connection=DriverManager.getConnection(URL, USERNAMR, PASSWORD);

System.out.println("成功连接数据库");

}catch(ClassNotFoundException e) {throw new RuntimeException("class not find !", e);

}catch(SQLException e) {throw new RuntimeException("get connection error!", e);

}returnconnection;

}/*** 释放资源*/

public voidReleaseResource() {if (rs != null) {try{

rs.close();

}catch(SQLException e) {

e.printStackTrace();

}

}if (pstm != null) {try{

pstm.close();

}catch(SQLException e) {

e.printStackTrace();

}

}if (connection != null) {try{

connection.close();

}catch(SQLException e) {

e.printStackTrace();

}

}

}

}