测试连接oracle数据库耗时

maven项目

主程序:ConnOracle.java

 package org.guangsoft.oracle;

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

 import org.guangsoft.util.PropUtil;

 public class ConnOracle {
     private static final String DRIVERCLASS = PropUtil.getProps().getProperty("DRIVERCLASS");
     private static final String URL = PropUtil.getProps().getProperty("URL");
     private static final String USERNAME = PropUtil.getProps().getProperty("USERNAME");
     private static final String PASSWORD = PropUtil.getProps().getProperty("PASSWORD");
     private static Connection conn = null;  

     public static void main(String[] args) {
         System.out.println("####DRIVERCLASS is " + DRIVERCLASS);
         System.out.println("####URL is " + URL);
         System.out.println("####USERNAME is " + USERNAME);
         System.out.println("####PASSWORD is " + PASSWORD);
         try {
             Class.forName(DRIVERCLASS);
         } catch (ClassNotFoundException e) {
             System.out.println("####Class.forName failed!");
             e.printStackTrace();
         }  

         try {
             long startTime = System.currentTimeMillis();
             conn = DriverManager.getConnection(URL, USERNAME, PASSWORD);
             long endTime = System.currentTimeMillis();
             if (conn == null) {
                 System.out.println("conn is null 获取链接失败！");
             } else {
                 System.out.println("conn --> " + conn);
                 System.out.println(conn.hashCode());
                 System.out.println("获取连接耗时：" + (endTime - startTime) + " ms");
             }  

         } catch (SQLException e) {
             System.out.println("####DriverManager.getConnection failed!");
             e.printStackTrace();
         } finally {
             try {
                 conn.close();
             } catch (Exception e) {
                 e.printStackTrace();
             }
         }
     }
 }  

PropUtil.java

package org.guangsoft.util;

import java.io.InputStream;
import java.util.Properties;

public class PropUtil {

    private static Properties props = null;

    static {
        readProperties("db.properties");
    }

    private static void readProperties(String fileName) {
        try {
            props = new Properties();
            InputStream inputStream = Thread.currentThread().getContextClassLoader().getResourceAsStream(fileName);
            props.load(inputStream);
            inputStream.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
    } 

    public static Properties getProps() {
        return props;
    }

}

db.properties

DRIVERCLASS=oracle.jdbc.driver.OracleDriver

URL=jdbc:oracle:thin:@localhost:1521:orcl

USERNAME=test

PASSWORD=test

pom.xml

 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
     <groupId>org.guangsoft</groupId>
     <artifactId>oracle</artifactId>
     <version>1.0</version>
     <packaging>jar</packaging>
     <dependencies>
         <dependency>
             <groupId>com.oracle</groupId>
             <artifactId>ojdbc5</artifactId>
             <version>11.2</version>
         </dependency>
     </dependencies>
     <build>
         <sourceDirectory>src</sourceDirectory>
         <resources>
             <resource>
                 <directory>src</directory>
                 <excludes>
                     <exclude>**/*.java</exclude>
                 </excludes>
             </resource>
         </resources>
         <plugins>
             <plugin>
                 <artifactId>maven-compiler-plugin</artifactId>
                 <version>2.3.2</version>
                 <configuration>
                     <source>1.5</source>
                     <target>1.5</target>
                 </configuration>
             </plugin>
         </plugins>
     </build>
 </project>