環境
Oracle服務器環境
- 系統：CentOS Linux release 7.6.1810
- Oracle：11.2.0.4 RAC
- IP：192.168.10.160/161
- Oracle Servicename：zydb
Tomcat服務器環境
- 系統：CentOS Linux release 7.6.1810
- IP:192.168.20.43
- tomcat：Apache Tomcat/9.0.34
- JDK：openjdk version "1.8.0_181"
- ojdbc：ojdbc7.jar
- CATALINA_BASE：/usr/local/tomcat/apache-tomcat-9.0.34
Oracle 配置
准備測試用戶和測試表
create user v_test identified by v_test;
create table V_TEST.TB1
(
p1 INTEGER,
p2 INTEGER not null
);
insert into tb1 values (1,678);
Tomcat 配置
導入ojbc7.jar
將ojbc7.jar導入至目錄$CATALINA_BASE/lib。（不同的jdk使用的ojdc版本不同，需注意）
[root@zsdb lib]# pwd
/usr/local/tomcat/apache-tomcat-9.0.34/lib
[root@zsdb lib]# ll
總用量 13952
.......
-rw-r----- 1 root root 2989263 4月 3 20:04 ecj-4.15.jar
-rw-r----- 1 root root 89666 4月 3 20:04 el-api.jar
-rw-r----- 1 root root 170856 4月 3 20:04 jasper-el.jar
-rw-r----- 1 root root 562942 4月 3 20:04 jasper.jar
-rw-r----- 1 root root 27959 4月 3 20:04 jaspic-api.jar
-rw-r----- 1 root root 63220 4月 3 20:04 jsp-api.jar
-rw-r--r-- 1 root root 3397734 8月 6 14:10 ojdbc7.jar <==============此文件
-rw-r----- 1 root root 283288 4月 3 20:04 servlet-api.jar
......
配置 context.xml
調整$CATALINA_BASE/conf/context.xml 文件，添加jdbc鏈接配置。
- 單機配置
<Context path="/testwar" reloadable="true" docBase="/usr/local/tomcat/apache-tomcat-9.0.34/webapps/testwar" workDir="/usr/local/tomcat/apache-tomcat-9.0.34/webapps/testwar/work" >
<Resource name="jdbc/myoracle" auth="Container"
type="javax.sql.DataSource" driverClassName="oracle.jdbc.OracleDriver"
url="jdbc:oracle:thin:@192.168.10.158:1521:zydb1"
username="v_test" password="v_test" maxActive="20" maxIdle="10"
maxWait="-1"/>
</Context>
- RAC配置
<Context path="/testwar" reloadable="true" docBase="/usr/local/tomcat/apache-tomcat-9.0.34/webapps/testwar" workDir="/usr/local/tomcat/apache-tomcat-9.0.34/webapps/testwar/work" >
<Resource name="jdbc/myoracle" auth="Container"
type="javax.sql.DataSource" driverClassName="oracle.jdbc.OracleDriver"
url="jdbc:oracle:thin:@(DESCRIPTION=(LOAD_BALANCE = yes)(FAILOVER = yes)(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.10.160)(PORT = 1522))(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.10.161)(PORT = 1522))(CONNECT_DATA =(SERVER = DEDICATED)(SERVICE_NAME = zydb)))"
username="v_test" password="v_test" maxActive="20" maxIdle="10"
maxWait="-1"/>
</Context>
war包准備
在$CATALINA_BASE/webapps目錄創建testwar文件夾，包含如下目錄、文件
- testwar
[root@zsdb webapps]# pwd
/usr/local/tomcat/apache-tomcat-9.0.34/webapps
[root@zsdb webapps]# tree -L 2 testwar
testwar <==========文件夾
├── test.jsp <==========文件
├── WEB-INF <==========文件夾
│ └── web.xml <==========文件
└── work <==========文件夾
└── org
- test.jsp
<%@ page contentType="text/html; charset=UTF-8" %>
<%@ page import="java.sql.*"%>
<%@ page import="javax.sql.*"%>
<%@ page import="javax.naming.*"%>
<%@ page import="java.util.Hashtable,javax.sql.DataSource "%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html>
<head>
<title>DataSource Welcome Page</title>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
</head>
<body>
<table cellspacing="0" border=1>
<thead>
<tr>
<th>p1</th>
<th>p2</th>
</tr>
</thead>
<tbody>
<%
try {
InitialContext ctx = new InitialContext();
DataSource ds = (DataSource)ctx.lookup("java:comp/env/jdbc/myoracle");
Connection conn = ds.getConnection();
Statement stmt = conn.createStatement();
ResultSet rst = stmt.executeQuery(" select p1, p2 from tb1");
while (rst.next()) {
out.println("<tr>");
out.println("<td>"+rst.getString("p1")+"</td>");
out.println("<td>"+rst.getString("p2")+"</td>");
out.println("</tr>");
}
conn.close();
} catch (Exception e){
e.printStackTrace();
}
%>
</tbody>
</table>
</body>
</html>
- web.xml
<?xml version="1.0" encoding="UTF-8"?>
<!--
Licensed to the Apache Software Foundation (ASF) under one or more
contributor license agreements. See the NOTICE file distributed with
this work for additional information regarding copyright ownership.
The ASF licenses this file to You under the Apache License, Version 2.0
(the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
-->
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee
http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"
version="4.0"
metadata-complete="true">
<display-name>Welcome to Tomcat</display-name>
<description>
Welcome to Tomcat
</description>
<resource-ref>
<description>Oracle Datasource example</description>
<res-ref-name>jdbc/myoracle</res-ref-name>
<res-type>javax.sql.DataSource</res-type>
<res-auth>Container</res-auth>
</resource-ref>
</web-app>
啟動測試
啟動tomcat程序。
[root@zsdb bin]# pwd
/usr/local/tomcat/apache-tomcat-9.0.34/bin
[root@zsdb bin]# ./startup.sh
通過頁面訪問http://192.168.20.43:8080/testwar/test.jsp
數據庫監聽日志
- listener.log
(VERSION=186647552)) * status * 0
10-AUG-2020 16:28:38 * (CONNECT_DATA=(CID=(PROGRAM=)(HOST=dbrac1)(USER=oracle))(COMMAND=status)(ARGUMENTS=64)(SERVICE=LISTENER_ORACLE)(VERSION=186647552)) * status * 0
Thu Aug 06 16:28:39 2020
10-AUG-2020 16:28:39 * service_update * zydb1 * 0
10-AUG-2020 16:28:47 * (CONNECT_DATA=(CID=(PROGRAM=JDBC Thin Client)(HOST=__jdbc__)(USER=root))(SERVER=DEDICATED)(SERVICE_NAME=zydb)) * (ADDRESS=(PROTOCOL=tcp)(HOST=192.168.20.43)(PORT=44521)) * establish * zydb * 0 <=================== 剛剛訪問的記錄
......
至此，測試完全通過。