티스토리 뷰
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
public class PreparedStmt {
/**
* PreparedStatement 테스트
*/
Connection con;
static {
try {
Class.forName("oracle.jdbc.driver.OracleDriver");
} catch (ClassNotFoundException cne) {
cne.printStackTrace();
}
}
public void connect() {
try {
con = DriverManager.getConnection(
"jdbc:oracle:thin:@localhost:1521:orcl", "scott", "tiger");
System.out.println("Connection Success!");
} catch (SQLException se) {
se.printStackTrace();
}
}
public void createTable() {
PreparedStatement pstmt = null;
try {
String sql = "create table member (id varchar(10), name varchar(10))";
pstmt = con.prepareStatement(sql);
pstmt.executeUpdate();
System.out.println("create success!");
} catch (SQLException e) {
System.out.println("create fail or aleady defined");
e.printStackTrace();
} finally {
try {
pstmt.close();
con.close();
} catch (Exception e) {
e.printStackTrace();
}
}
}
public void insert() {
PreparedStatement pstmt = null;
try {
String sql = "INSERT INTO member VALUES(?,?)";
pstmt = con.prepareStatement(sql);
pstmt.setString(1, "java");
pstmt.setString(2, "kim");
int count = pstmt.executeUpdate();
if (count > 0) {
System.out.println("insert success!");
} else {
System.out.println("insert fail");
}
} catch (SQLException se) {
System.out.println("insert fail");
se.printStackTrace();
} finally {
try {
pstmt.close();
con.close();
} catch (Exception e) {
e.printStackTrace();
}
}
}
public void select() {
PreparedStatement pstmt = null;
ResultSet rs = null;
try {
String sql = "SELECT * FROM member";
pstmt = con.prepareStatement(sql);
rs = pstmt.executeQuery();
while (rs.next()) {
System.out.println("아이디 : " + rs.getString(1) + ",이름 : "
+ rs.getString("name"));
}
} catch (SQLException se) {
se.printStackTrace();
} finally {
try {
pstmt.close();
con.close();
} catch (Exception e) {
e.printStackTrace();
}
}
}
public void update() {
PreparedStatement pstmt = null;
try {
String sql = "UPDATE member SET id = ? WHERE name = ?";
pstmt = con.prepareStatement(sql);
pstmt.setString(1, "trans");
pstmt.setString(2, "kim");
int count = pstmt.executeUpdate();
if (count > 0) {
System.out.println("update success!");
} else {
System.out.println("update fail");
}
} catch (SQLException se) {
System.out.println("update fail");
se.printStackTrace();
} finally {
try {
pstmt.close();
con.close();
} catch (Exception e) {
e.printStackTrace();
}
}
}
public void delete() {
PreparedStatement pstmt = null;
try {
String sql = "DELETE member WHERE id = ?";
pstmt = con.prepareStatement(sql);
pstmt.setString(1, "trans");
int count = pstmt.executeUpdate();
if (count > 0) {
System.out.println("delete success!");
} else {
System.out.println("delete fail");
}
} catch (SQLException se) {
System.out.println("delete fail");
se.printStackTrace();
} finally {
try {
pstmt.close();
con.close();
} catch (Exception e) {
e.printStackTrace();
}
}
}
public static void main(String[] args) {
// TODO Auto-generated method stub
PreparedStmt pt = new PreparedStmt();
pt.connect();
pt.createTable(); // insert
System.out.println("create 수행 후");
pt.connect();
pt.select();
pt.connect();
pt.insert(); // insert
System.out.println("insert 수행 후");
pt.connect();
pt.select();
pt.connect();
pt.update(); // update
System.out.println("update 수행 후");
pt.connect();
pt.select();
pt.connect();
pt.delete(); // delete
System.out.println("delete 수행 후");
pt.connect();
pt.select();
}
}
결과 :
Connection Success!
create success!
create 수행 후
Connection Success!
Connection Success!
insert success!
insert 수행 후
Connection Success!
아이디 : java,이름 : kim
Connection Success!
update success!
update 수행 후
Connection Success!
아이디 : trans,이름 : kim
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