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Main.java
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executable file
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/*
* Main.java
*
* Created on 1 òðàâíÿ 2007, 14:59
*
* To change this template, choose Tools | Template Manager
* and open the template in the editor.
*/
package javaapplication8;
//import com.sun.org.apache.bcel.internal.classfile.JavaClass;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.lang.reflect.Constructor;
import java.lang.reflect.Method;
import java.net.URL;
import java.net.URLClassLoader;
import java.sql.*;
import java.util.Properties;
import java.util.jar.JarEntry;
import java.util.jar.JarInputStream;
/**
*
* @author Òåõíèê
*/
class connect_to_firebird{
public static Class loadClass(String path_to_jar, String class_name){
Class return_value=null;
try{
URLClassLoader urlLoader = new URLClassLoader(new URL[]{new URL("file", null, path_to_jar)});
return_value=urlLoader.loadClass(class_name);
System.out.println("Loaded class:"+return_value.getName());
}catch(Throwable ex){
System.out.println(" error in load class"+ex.getMessage());
};
return return_value;
}
connect_to_firebird(){
java.sql.Driver driver=null;
java.sql.Connection connection=null;
java.sql.Statement statement=null;
java.sql.ResultSet rs=null;
java.sql.ResultSetMetaData rs_metadata=null;
String query;
//String databaseURL = "jdbc:firebirdsql:local:d:/work/sadik/sadik.gdb?sql_dialect=3";
String databaseURL = "jdbc:firebirdsql://localhost:3050/d:/work/sadik/sadik.gdb?sql_dialect=3";
String user = "SYSDBA";
String password = "masterkey";
String driver_name = "org.firebirdsql.jdbc.FBDriver";
try{
System.out.println("--- try to connect driver");
//System.loadLibrary("C:\\jaybird-full-2.1.1.jar");
// ïðîñòîå ïîäêëþ÷åíèå, êîòîðîå òðåáóåò â äèðåêòîðèè LIB æåñòêî ïðèâÿçàííîãî JAR
//Class.forName(class_name);
// Äèíàìè÷åñêîå ïîäêëþ÷åíèå:
// 1:
//driver=new org.firebirdsql.jdbc.FBDriver();
// 2:
/*
Class current_class=loadClass("C:\\jaybird-full-2.1.1.jar","org.firebirdsql.jdbc.FBDriver");
System.out.println("--- Class:"+current_class.toString());
Constructor[] constr=current_class.getConstructors();
for(int counter=0;counter<constr.length;counter++){
System.out.println(counter+" : "+constr[counter].getName());
}
Object object=current_class.newInstance();
driver=(java.sql.Driver)current_class.newInstance();
System.out.println("--- Driver:"+driver.toString());
java.sql.DriverManager.registerDriver(driver);
*/
// 3:
/*
URL url=new URL("jar:file:C:/jaybird-full-2.1.1.jar!/");
URLClassLoader class_loader=new URLClassLoader(new URL[]{url});
System.out.println("URLClassLoader:"+class_loader);
Class.forName(class_name,true,class_loader);
System.out.println("loaded class");
*/
// 4:
//URL url = new URL("jar:file:/c:/jaybird-full-2.1.1.jar!/");
URL url=new URL("file", null, "C:\\jaybird-full-2.1.1.jar");
URLClassLoader ucl = new URLClassLoader(new URL[]{url},null);
System.out.println("---URLClassLoader:"+ucl);
Class class_value=Class.forName(driver_name,true,ucl);
System.out.println("---classValue:"+class_value);
Object d_object=class_value.newInstance();
System.out.println("---object Driver:"+d_object);
driver = (Driver)class_value.newInstance();
System.out.println("---to Driver:"+driver);
DriverManager.registerDriver(driver);
System.out.println("---register Driver");
Properties properties=new Properties();
properties.put("user",user);
properties.put("password",password);
//org.firebirdsql.pool.FBWrappingDataSource dataSource=new org.firebirdsql.pool.FBWrappingDataSource();
//connection=java.sql.DriverManager.getConnection(databaseURL,user,password);
connection=driver.connect(databaseURL, properties);
System.out.println("firebird connected");
statement=connection.createStatement();
query="SELECT KOD_1NF FROM S_DDZ";
if(statement.execute(query)==true){
System.out.println("Query OK");
// âûâîä ðåçóëüòàòà
rs=statement.getResultSet();
// âûâîä çàãîëîâêîâ
rs_metadata=rs.getMetaData();
for(int i=0;i<rs_metadata.getColumnCount();i++){
System.out.print(" >"+rs_metadata.getColumnLabel(i+1)+"< ");
}
System.out.println("\n");
// âûâîä äàííûõ
while(rs.next()){
for(int i=0;i<rs_metadata.getColumnCount();i++){
System.out.print(" "+rs.getInt(i+1)+" ");
}
System.out.println("\n");
}
System.out.println("end of MySQL");
}
}catch(Exception e){
System.out.println(">>>Error "+e.getMessage());
}catch(Throwable ex){
System.out.println(">>>Throwable: "+ex.getMessage());
}
}
}
class connect_to_mysql{
String driver_name="org.gjt.mm.mysql.Driver";
java.sql.Connection connection=null;
java.sql.Driver driver=null;
java.sql.Statement statement=null;
java.sql.ResultSet rs=null;
java.sql.ResultSetMetaData rs_metadata=null;
String query;
//String driver="org.gjt.mm.mysql.Driver";
connect_to_mysql(){
try{
// ïîïûòêà ïîäêëþ÷åíèÿ ê áàçå äàííûõ
Class.forName(driver_name);
connection=java.sql.DriverManager.getConnection("jdbc:mysql://localhost:3306/db_temp","root","");
System.out.println("connected");
statement=connection.createStatement();
query="SELECT * FROM TABLE_1";
if(statement.execute(query)==true){
System.out.println("Query OK");
// âûâîä ðåçóëüòàòà
rs=statement.getResultSet();
// âûâîä çàãîëîâêîâ
rs_metadata=rs.getMetaData();
for(int i=0;i<rs_metadata.getColumnCount();i++){
System.out.print(" >"+rs_metadata.getColumnLabel(i+1)+"< ");
}
System.out.println("\n");
// âûâîä äàííûõ
while(rs.next()){
for(int i=0;i<rs_metadata.getColumnCount();i++){
System.out.print(" "+rs.getString(i+1)+" ");
}
System.out.println("\n");
}
System.out.println("end of MySQL");
}
else {
System.out.println("Error in query");
}
}
catch(Exception e){
System.out.println("Error in connect to MySQl \n"+e.getMessage());
}
}
}
/**
public class Connector {
static {
try{
Class.forName("oracle.jdbc.driver.OracleDriver").newInstance();
}catch(Exception ex){
System.err.println("Connector exception: "+ex.getMessage());
}
}
public static Connection getConnection(){
try{
return DriverManager.getConnection("jdbc:oracle:thin:@91.195.53.27:1521:demo","bc_reports","bc_reports");
}catch(Exception ex){
System.err.println("Connector#getConnection: "+ex.getMessage());
return null;
}
}
}
*/
public class Main {
/** Creates a new instance of Main */
public Main() {
}
/**
* @param args the command line arguments
*/
public static void main(String[] args) {
// TODO code application logic here
try{
//new connect_to_mysql();
new connect_to_firebird();
}
catch(java.lang.NoClassDefFoundError e){
System.out.println(">>> Error in thread main:"+e.getMessage());
}
}
private static URLClassLoader getURLClassLoader(URL jarURL) {
return new URLClassLoader(new URL[]{jarURL});
}
public static void addJAR(String path_to_file,String class_name){
try{
URLClassLoader urlLoader = getURLClassLoader(new URL("file", null, path_to_file));
Class class_value=urlLoader.loadClass(class_name);
System.out.println("Loaded class:"+class_value.getName());
JarInputStream jis = new JarInputStream(new FileInputStream(path_to_file));
JarEntry entry = jis.getNextJarEntry();
int loadedCount = 0, totalCount = 0;
}catch(Throwable ex){
System.out.println(" error in load class"+ex.getMessage());
};
}
public static void addURL(URL u) throws IOException {
URLClassLoader sysLoader = (URLClassLoader) ClassLoader.getSystemClassLoader();
URL urls[] = sysLoader.getURLs();
for (int i = 0; i < urls.length; i++) {
if (urls[i].toString().equalsIgnoreCase(u.toString())) {
System.out.println("URL " + u + " is already in the CLASSPATH");
return;
}
}
/*Class sysclass = URLClassLoader.class;
try {
Method method = sysclass.getDeclaredMethod("addURL", parameters);
method.setAccessible(true);
method.invoke(sysLoader, new Object[]{u});
} catch (Throwable t) {
t.printStackTrace();
throw new IOException("Error, could not add URL to system classloader");
}*/
}
}
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