JDBC如何直接访问mysql数据库

     这篇文章主要介绍“JDBC怎么直接访问mysql数据库”，在日常操作中，相信很多人在JDBC怎么直接访问mysql数据库问题上存在疑惑，小编查阅了各式资料，整理出简单好用的操作方法，希望对大家解答”JDBC怎么直接访问mysql数据库”的疑惑有所帮助！接下来，请跟着小编一起来学习吧！
 
import com.mysql.jdbc.Driver;
 
import java.sql.Connection;
 
import java.sql.Statement;
 
import java.sql.DriverManager;
 
import java.sql.ResultSet;
 
import java.sql.ResultSetMetaData;
 
import java.io.*;
 
import java.sql.*;
 
public class Database {
 
privateConnection connection = null;
 
public boolean Init( String url, String userName, String password) throws Exception
 
{
 
Class.forName("com.mysql.jdbc.Driver").newInstance();
 
connection = DriverManager.getConnection(url, userName, password);
 
return true;
 
}
 
public void Test() throws Exception
 
{
 
Statement st = connection.createStatement();
 
//Insert
 
//st.execute("Insert into setup values ( '13', '22') ");
 
//Test Blob field
 
//Write Test
 
File file1 = new File("Database.java");
 
int len1 = (int) file1.length();
 
InputStream fis1 = new java.io.FileInputStream(file1);
 
PreparedStatement ps = connection.prepareStatement("INSERT INTO setup VALUES (?, ?,?)");
 
ps.setString(1, "250");
 
ps.setString(2, "250ddd");
 
ps.setAsciiStream(3, fis1, len1);
 
ps.execute();
 
ResultSet r = st.executeQuery("select * from setup");
 
if( r!= null )
 
{
 
ResultSetMetaData m = r.getMetaData();
 
while( r.next())
 
{
 
for( int i = 1; i<= m.getColumnCount(); i++ )
 
{
 
System.out.println( m.getColumnLabel(i) + "=" + r.getObject(i).toString() );
 
}
 
java.sql.Blob ablob = r.getBlob(3);
 
System.out.println( r.getString(1) + " " +r.getString(2) + " " + ablob.length());
 
InputStream bis = ablob.getBinaryStream() ;
 
OutputStream os = new FileOutputStream("test.java");
 
int b = bis.read();
 
while (b != -1 ) {
 
System.out.print((char)b);
 
os.write((char)b);
 
b = bis.read();
 
}
 
os.flush();
 
os.close();
 
bis.close();
 
}
 
}
 
else
 
{
 
System.out.println("The table is empty.");
 
}
 
//Read Test
 
}
 
public static void main( String []args)
 
{
 
Database db = new Database();
 
try
 
{
 
db.Init("jdbc:mysql://localhost:3306/jivejdon?useUnicode=true&characterEncoding=gbk", "root", "root");
 
db.Test();
 
}
 
catch ( Exception e )
 
{
 
e.printStackTrace();
 
}
 
}
 
}
 
到此，关于“JDBC怎么直接访问mysql数据库”的学习就结束了，希望能够解决大家的疑惑。