MySQL - JDBC implémente Master Slave

Aujourd'hui, je vais vous apporter un morceau de code pour que JDBC implémente Master Slave. Eh bien, sans plus d'explications, passons directement au code.

Le code spécifique est le suivant :

package com.lyz.test;

import java.beans.PropertyVetoException;
import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;

import com.mchange.v2.c3p0.ComboPooledDataSource;

/**
 * Mysql JDBC 实现Master Slave
 * 
 * @author liuyazhuang
 * @datetime 2016-11-17
 * 
 */
public class ReplicationDriverTest {
	private static final String URL = "jdbc:mysql://127.0.0.1:3306/test1?useUnicode=true&characterEncoding=utf8";
	private static final String DRIVER = "com.mysql.jdbc.Driver";
	/* Master Slave */
	private static final String replicationURL = "jdbc:mysql:replication://localhost:3306,10.2.15.123:3306/test?useUnicode=true&characterEncoding=utf8";
	/* 负载平衡 */
	private static final String loadBalanceURL = "jdbc:mysql:loadbalance://localhost:3306,10.2.15.123:3306/test?useUnicode=true&characterEncoding=utf8";
	private static final String REPLICATION_DRIVER = "com.mysql.jdbc.ReplicationDriver";

	public static void main(String[] args) throws SQLException {
		// oneDB();
		// replicationDB(URL);
		// replicationDB(replicationURL);
		replicationDB(loadBalanceURL);

	}

	public static void replicationDB(String url) throws SQLException {
		ComboPooledDataSource dataSource = new ComboPooledDataSource();
		try {
			dataSource.setDriverClass(REPLICATION_DRIVER);
		} catch (PropertyVetoException e1) {
			e1.printStackTrace();
		}
		dataSource.setJdbcUrl(url);
		dataSource.setMaxPoolSize(10);
		dataSource.setMinPoolSize(10);
		dataSource.setUser("kevin");
		dataSource.setPassword("123456");
		dataSource.setCheckoutTimeout(1000);
		dataSource.setDataSourceName("datasource");
		dataSource.setInitialPoolSize(10);
		try {
			Connection connection = dataSource.getConnection();
			connection.setReadOnly(true);//设置为只读，代理类将会获取Slave数据库连接，否则设置Master连接
			java.sql.PreparedStatement pStatement_ = connection.prepareStatement("SELECT user_id, username, PASSWORD, email  FROM account_0 LIMIT 0,3;");
			ResultSet rs = pStatement_.executeQuery();
			while (rs.next()) {
				System.out.println(rs.getInt(1) + "\t" + rs.getString(2) + "\t" + rs.getString(3) + "\t" + rs.getString(4));
			}
			rs.close();
			pStatement_.close();
			connection.close();
		} catch (SQLException e) {
			e.printStackTrace();
		}
		Connection connection = dataSource.getConnection();
		connection.setReadOnly(false);//设置为只读，代理类将会获取Slave数据库连接，否则设置Master连接
		java.sql.PreparedStatement pStatement_ = connection.prepareStatement("UPDATE account_0 SET  username = 'kevin' ,
		PASSWORD = 'password' ,email = 'xxxx' WHERE user_id = '1001' ;");
		int row = pStatement_.executeUpdate();
		System.out.println(row);
		pStatement_.close();
		connection.close();
	}

	public static void oneDB() throws SQLException {
		ComboPooledDataSource dataSource = new ComboPooledDataSource();
		try {
			dataSource.setDriverClass(DRIVER);
		} catch (PropertyVetoException e1) {
			e1.printStackTrace();
		}
		dataSource.setJdbcUrl(URL);
		dataSource.setMaxPoolSize(10);
		dataSource.setMinPoolSize(10);
		dataSource.setUser("root");
		dataSource.setPassword("123456");
		dataSource.setCheckoutTimeout(1000);
		dataSource.setDataSourceName("datasource00");
		dataSource.setInitialPoolSize(10);
		try {
			Connection connection = dataSource.getConnection();
			java.sql.PreparedStatement pStatement_ = connection.prepareStatement("SELECT * FROM user limit 1");
			ResultSet rs = pStatement_.executeQuery();
			while (rs.next()) {
				System.out.println(rs.getInt(1) + "\t" + rs.getString(2) + "\t" + rs.getString(3) + "\t" + rs.getString(4));
			}
			rs.close();
			pStatement_.close();
			connection.close();
		} catch (SQLException e) {
			e.printStackTrace();
		}
		Connection connection = dataSource.getConnection();
		java.sql.PreparedStatement pStatement_ = connection.prepareStatement("UPDATE user SET	NAME = 'KEVIN-LUAN' , sex = '1' ,
		 age = '89' WHERE id = 16 ;");
		int row = pStatement_.executeUpdate();
		System.out.println(row);
		pStatement_.close();
		connection.close();
	}
}

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