Proxool连接池配置

Posted 2020-10-31 Talk is cheap. Show me the cod

1、将数据库链接使用的JDBC库文件和连接池使用的proxool.jar库文件放入项目中

2、配置proxool.xml文件，新建一个proxool.xml文件放在项目的WEB-INF目录下

 1 <?xml version="1.0" encoding="ISO-8859-1"?>
 2 <!-- the proxool configuration can be embedded within your own application‘s.
 3 Anything outside the "proxool" tag is ignored. -->
 4 <something-else-entirely>
 5   <proxool>
 6     <alias>public</alias>
 7     <driver-url>jdbc:oracle:thin:@192.168.9.73:1521:oss</driver-url>
 8     <driver-class>oracle.jdbc.driver.OracleDriver</driver-class>
 9     <driver-properties>
10       <property name="user" value="upm"/>
11       <property name="password" value="upm"/>
12     </driver-properties>
13     <maximum-connection-lifetime>600000</maximum-connection-lifetime>
14     <maximum-connection-count>5</maximum-connection-count>
15     <house-keeping-test-sql>select CURRENT_DATE FROM dual</house-keeping-test-sql>
16   </proxool>
17 </something-else-entirely>

3、配置web.xml

 1 <! -- 配置初始化servlet,在web容器加载的时候自动加载配置文件 -->
 2 <servlet>
 3     <servlet-name>proxoolServletConfigurator</servlet-name>
 4     <servlet-class>org.logicalcobwebs.proxool.configuration.ServletConfigurator</servlet-class>
 5     <init-param>
 6       <param-name>xmlFile</param-name>
 7       <param-value>WEB-INF/proxool.xml</param-value>
 8     </init-param>
 9     <load-on-startup>1</load-on-startup>
10 </servlet>
11 <!--配置监控servlet-->   
12 <servlet>   
13       <servlet-name>dbpoolAdmin</servlet-name>    
14       <servlet-class>org.logicalcobwebs.proxool.admin.servlet.AdminServlet</servlet-class>
15 </servlet>
16 <servlet-mapping>    
17       <servlet-name>dbpoolAdmin</servlet-name>    
18       <url-pattern>/dbpool</url-pattern>
19 </servlet-mapping>

4、使用数据库连接池

 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      * 默认的数据库链接，链接Oss139 统一位置 管理下的对象
17      * 
18      * @return Connection
19      */
20     public static Connection getConnection() {
21 
22         try {
23             Class.forName("org.logicalcobwebs.proxool.ProxoolDriver");
24         } catch (ClassNotFoundException e) {
25             e.printStackTrace();
26             return null;
27         } catch (Exception e) {
28             e.printStackTrace();
29             return null;
30         }
31         Connection conn = null;
32         try {
33             conn = DriverManager.getConnection("proxool.public");
34         } catch (SQLException e) {
35             e.printStackTrace();
36             log.error("DBManager getConnection null.{}", e);
37             return null;
38         }
39         return conn;
40     }
41 
42     /**
43      * 链接指定的 数据库对象
44      * 
45      * @param dataBaseName
46      * 对象名
47      * @return Connection
48      */
49     public static Connection getConnection(String dataBaseName) {
50 
51         try {
52             Class.forName("org.logicalcobwebs.proxool.ProxoolDriver");
53         } catch (ClassNotFoundException e) {
54             e.printStackTrace();
55             return null;
56         } catch (Exception e) {
57             e.printStackTrace();
58             return null;
59         }
60         Connection conn = null;
61         try {
62             conn = DriverManager.getConnection("proxool." + dataBaseName);
63         } catch (SQLException e) {
64             e.printStackTrace();
65             return null;
66         }
67         return conn;
68     }
69 
70     public static void close(Connection conn, Statement st, ResultSet rs) {
71 
72         try {
73             if (rs != null)
74                 rs.close();
75         } catch (Exception e) {
76             log.error("DBManager close fail rs. {}", e);
77         }
78         ;
79         try {
80             if (st != null)
81                 st.close();
82         } catch (Exception e) {
83             log.error("DBManager close fail st. {}", e);
84         }
85         ;
86         try {
87             if (conn != null)
88                 conn.close();
89         } catch (Exception e) {
90             log.error("DBManager close fail conn. {}", e);
91         }
92     }
93 }