Hello Spring（3）ConnectionUtility

ConnectionUtility.java

package test;

import java.sql.Connection;
import java.sql.DriverManager;

public class ConnectionUtility {
    
    private String userName;
    private String password;
    private String dbUrl;
    private String dbDriver;
    
    public Connection getConnection(){
        
        try {
            Class.forName(dbDriver);
            return DriverManager.getConnection(dbUrl, userName, password);
        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        
        return null ;
        
    }
    
    
    public String getUserName() {
        return userName;
    }
    public void setUserName(String userName) {
        this.userName = userName;
    }
    public String getPassword() {
        return password;
    }
    public void setPassword(String password) {
        this.password = password;
    }
    public String getDbUrl() {
        return dbUrl;
    }
    public void setDbUrl(String dbUrl) {
        this.dbUrl = dbUrl;
    }
    public String getDbDriver() {
        return dbDriver;
    }
    public void setDbDriver(String dbDriver) {
        this.dbDriver = dbDriver;
    }
    
    

}

 beans.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE beans PUBLIC "" "http://www.springframework.org/dtd/spring-beans.dtd" >
<beans>

    <bean id="conn" class="test.ConnectionUtility">
        <property name="userName" value="root"></property>
        <property name="password" value="root"></property>
        <property name="dbUrl" value="jdbc:mysql://192.168.1.136:3306/db_epolice"></property>
        <property name="dbDriver" value="com.mysql.jdbc.Driver"></property>
    </bean>

</beans>

Tester.java

package test;

import java.sql.Connection;

import org.springframework.beans.factory.BeanFactory;
import org.springframework.beans.factory.xml.XmlBeanFactory;
import org.springframework.core.io.ClassPathResource;
import org.springframework.core.io.Resource;

@SuppressWarnings("deprecation")
public class Tester {
    
    public static void main( String[] args){
        
        Resource r = new ClassPathResource("beans.xml");
        BeanFactory factory = new XmlBeanFactory(r);
        
        ConnectionUtility util = (ConnectionUtility) factory.getBean("connectionUtility");
        Connection conn = util.getConnection();
        
        System.out.println( conn );
        
    }

}

result