Durid數據庫鏈接池配置(不使用框架)

本人沒有使用任何框架，就是純JAVA的方式

一、下載Durid包(druid-0.2.23.jar)

百度網盤：https://pan.baidu.com/s/1q8LsG_Hv1PosCRwOXOiebw

密碼：b3cw

二、web.xml配置

<filter>
	<filter-name>DruidWebStatFilter</filter-name>
	<filter-class>com.alibaba.druid.support.http.WebStatFilter</filter-class>
	<init-param>
		<param-name>exclusions</param-name>
		<param-value>*.js,*.gif,*.jpg,*.png,*.css,*.ico,/druid/*</param-value>
	</init-param>
</filter>
<filter-mapping>
	<filter-name>DruidWebStatFilter</filter-name>
	<url-pattern>/*</url-pattern>
</filter-mapping>

<servlet>
	<servlet-name>DruidStatView</servlet-name>
	<servlet-class>com.alibaba.druid.support.http.StatViewServlet</servlet-class>
</servlet>
<servlet-mapping>
	<servlet-name>DruidStatView</servlet-name>
	<url-pattern>/druid/*</url-pattern>
</servlet-mapping>

三、工具類DbPoolConnection(獲取connection對象)

 1 package com.richinfo.dao.base;
 2 
 3 import java.io.File;
 4 import java.io.FileInputStream;
 5 import java.io.FileNotFoundException;
 6 import java.io.IOException;
 7 import java.io.InputStream;
 8 import java.sql.SQLException;
 9 import java.util.Properties;
10 
11 import com.alibaba.druid.pool.DruidDataSource;
12 import com.alibaba.druid.pool.DruidDataSourceFactory;
13 import com.alibaba.druid.pool.DruidPooledConnection;
14 
15 public class DbPoolConnection {
16     private static DbPoolConnection databasePool = null;
17     private static DruidDataSource dds = null;
18     static {
19         Properties properties = loadPropertyFile("durid.properties");
20         try {
21             dds = (DruidDataSource) DruidDataSourceFactory
22                     .createDataSource(properties);
23         } catch (Exception e) {
24             e.printStackTrace();
25         }
26     }
27     private DbPoolConnection() {}
28     public static synchronized DbPoolConnection getInstance() {
29         if (null == databasePool) {
30             databasePool = new DbPoolConnection();
31         }
32         return databasePool;
33     }
34     public DruidPooledConnection getConnection() throws SQLException {
35         return dds.getConnection();
36     }
37     public static Properties loadPropertyFile(String fullFile) {
38         String webRootPath = null;
39         if (null == fullFile || fullFile.equals(""))
40             throw new IllegalArgumentException(
41                     "Properties file path can not be null : " + fullFile);
42         webRootPath = DbPoolConnection.class.getClassLoader().getResource("")
43                 .getPath();
44         webRootPath = new File(webRootPath).getParent();
45         InputStream inputStream = null;
46         Properties p = null;
47         try {
48             inputStream = new FileInputStream(new File(webRootPath
49                     + File.separator + fullFile));
50             p = new Properties();
51             p.load(inputStream);
52         } catch (FileNotFoundException e) {
53             throw new IllegalArgumentException("Properties file not found: "
54                     + fullFile);
55         } catch (IOException e) {
56             throw new IllegalArgumentException(
57                     "Properties file can not be loading: " + fullFile);
58         } finally {
59             try {
60                 if (inputStream != null)
61                     inputStream.close();
62             } catch (IOException e) {
63                 e.printStackTrace();
64             }
65         }
66         return p;
67     }
68 }

四、工具類(對外提供接口,關閉數據庫鏈接)

 1 package com.richinfo.dao.base;
 2 
 3 import java.sql.Connection;
 4 import java.sql.DriverManager;
 5 import java.sql.ResultSet;
 6 import java.sql.SQLException;
 7 import java.sql.Statement;
 8 
 9 import org.apache.logging.log4j.LogManager;
10 import org.apache.logging.log4j.Logger;
11 
12 public class DBManager {
13     private static Logger log = LogManager.getLogger(DBManager.class);
14 
15     /**
16      * 默認的數據庫連接，連接Oss139 統一位置 管理下的對象
17      * 
18      * @return Connection
19      */
20     public static Connection getConnection() {
21         Connection conn = null;
22         try {
23              conn = DbPoolConnection.getInstance().getConnection();
24         } catch (SQLException e) {
25             e.printStackTrace();
26             log.error("DBManager getConnection null.{}", e);
27             return null;
28         }
29         return conn;
30     }
31 
32     /**
33      * 連接指定的 數據庫對象
34      * 
35      * @param dataBaseName
36      * 對象名
37      * @return Connection
38      */
39     public static Connection getConnection(String dataBaseName) {
40 
41         try {
42             Class.forName("org.logicalcobwebs.proxool.ProxoolDriver");
43         } catch (ClassNotFoundException e) {
44             e.printStackTrace();
45             return null;
46         } catch (Exception e) {
47             e.printStackTrace();
48             return null;
49         }
50         Connection conn = null;
51         try {
52             conn = DriverManager.getConnection("proxool." + dataBaseName);
53         } catch (SQLException e) {
54             e.printStackTrace();
55             return null;
56         }
57         return conn;
58     }
59 
60     public static void close(Connection conn, Statement st, ResultSet rs) {
61 
62         try {
63             if (rs != null)
64                 rs.close();
65         } catch (Exception e) {
66             log.error("DBManager close fail rs. {}", e);
67         }
68         ;
69         try {
70             if (st != null)
71                 st.close();
72         } catch (Exception e) {
73             log.error("DBManager close fail st. {}", e);
74         }
75         ;
76         try {
77             if (conn != null)
78                 conn.close();
79         } catch (Exception e) {
80             log.error("DBManager close fail conn. {}", e);
81         }
82     }
83 }

五、配置文件durid.properties

driverClassName=oracle.jdbc.driver.OracleDriver
url=jdbc:oracle:thin:@192.168.9.73:1521:oss
username=upm
password=upm
filters=stat
initialSize=2
maxActive=300
maxWait=60000
timeBetweenEvictionRunsMillis=60000
minEvictableIdleTimeMillis=300000
validationQuery=select CURRENT_DATE FROM dual
testWhileIdle=true
testOnBorrow=false
testOnReturn=false
poolPreparedStatements=false
maxPoolPreparedStatementPerConnectionSize=200