JDBC访问Mysql进行读写分离测试

在程序中添加两个数据源、分别对应读跟写：

#读#
DBDriver=com.mysql.jdbc.Driver
url=jdbc\:mysql\:loadbalance\://10.11.0.75,172.16.0.202\:3306/DB_TEST7?roundRobinLoadBalance\=true&characterEncoding\=UTF-8
name=TESTUSER
pass=TESTPWD
characterEncoding=utf8

 

#写#
DBDriver=com.mysql.jdbc.Driver
url=jdbc\:mysql\:loadbalance\://10.11.2.126\:3306/DB_TEST7?roundRobinLoadBalance\=true&characterEncoding\=UTF-8
name=TESTUSER
pass=TESTPWD
characterEncoding=utf8

测试类：

/**
 * 数据连接类
 * @author 胡汉三
 *
 */
public class UtilDao {
    static Properties properties = null;
    public UtilDao(String rw){
        //读取属性文件
        properties = new Properties();
        java.io.InputStream in = null;
        if(rw.equals("R")){
            in = (java.io.InputStream) this.getClass()
            .getResourceAsStream("/mysqlDBR.properties");
        }else if (rw.equals("W")){
            in = (java.io.InputStream) this.getClass()
            .getResourceAsStream("/mysqlDBW.properties");
        }
        try {
            properties.load(in);
        } catch (IOException ex) {
            System.out.println(ex.getMessage());
            ex.printStackTrace();
        }
    }
    public Connection getConn(){
        Connection connection = null;
        try{
            Class.forName(properties.getProperty("DBDriver"));
            connection = DriverManager.getConnection(properties.getProperty("url"),properties.getProperty("name"),properties.getProperty("pass"));
        }catch (Exception err) {
            System.out.println("连接ConDB-->getCon()____JDBC错误!");
            err.printStackTrace();
            return null;
        }
        return connection;
    }

    public static void main(String[] args) throws SQLException {
        UtilDao uW = new UtilDao("W");
        UtilDao uR = new UtilDao("R");
        Connection connR = uR.getConn();  //connectionsToHostsMap()
        Connection connW = uW.getConn();  //connectionsToHostsMap()
        connW.setAutoCommit(false);  //自动提交为False
        connR.setAutoCommit(false);  //自动提交为False
        String inSql = "insert into city(sname) values('复制')";
        String sql = "select * from city where sname = '复制'";
        Statement sW = connW.createStatement();
        Statement sR = connR.createStatement();
            try {
                sW.execute(inSql);
                connW.commit();
            } catch (Exception e) {
                connW.rollback();
                e.printStackTrace();
            }
        ResultSet r = sR.executeQuery(sql);
        int l = 0 ;
        while (r.next()){
            System.out.println(r.getString("sname")+" " +r.getString("Id")+"    第："+l+"条");
            l++;
        }
        r.close();
        sW.close();
        sR.close();
        connW.close();
        connR.close();
    }

 

输出：

复制 737    第：0条
复制 738    第：1条