tomcat下配置jdbc举例
使用tomcat手工配置jdbc时，一般会到应用下面的webapps中的“应用名称\WEB-INF\classes”文件夹中找到jdbc.properties文件。
然后根据样例配置jdbc即可，下面举一个例子：某java程序使用三用户方式访问各用户数据的系统，配置文件如下：
jdbc.driverClassName=oracle.jdbc.driver.OracleDriver
jdbc.url=jdbc:oracle:thin:@(DESCRIPTION =(ADDRESS_LIST =(LOAD_BALANCE = yes)(ADDRESS = (PROTOCOL = TCP)(HOST =192.168.56.60)(PORT = 1521))(ADDRESS = (PROTOCOL = TCP)(HOST =192.168.56.61)(PORT = 1521)))(CONNECT_DATA =(FAILOVER_MODE =(TYPE = select)(METHOD = basic))(SERVICE_NAME = hyldb)))
##jdbc.url=jdbc\:oracle\:thin\:@localhost\:1521\:orcl
jdbc.username=hyl_old_user
jdbc.password=hyl_old_1
hylnowdb.driverClassName=oracle.jdbc.driver.OracleDriver
hylnowdb.url=jdbc:oracle:thin:@(DESCRIPTION =(ADDRESS_LIST =(LOAD_BALANCE = yes)(ADDRESS = (PROTOCOL = TCP)(HOST =192.168.56.60)(PORT = 1521))(ADDRESS = (PROTOCOL = TCP)(HOST =192.168.56.61)(PORT = 1521)))(CONNECT_DATA =(FAILOVER_MODE =(TYPE = select)(METHOD = basic))(SERVICE_NAME = hyldb)))
hylnowdb.username=hyl_now_user
hylnowdb.password=hyl_now_1
hylnewdb.driverClassName=oracle.jdbc.driver.OracleDriver
hylnewdb.url=jdbc:oracle:thin:@(DESCRIPTION =(ADDRESS_LIST =(LOAD_BALANCE = yes)(ADDRESS = (PROTOCOL = TCP)(HOST =192.168.56.60)(PORT = 1521))(ADDRESS = (PROTOCOL = TCP)(HOST =192.168.56.61)(PORT = 1521)))(CONNECT_DATA =(FAILOVER_MODE =(TYPE = select)(METHOD = basic))(SERVICE_NAME = hyldb)))
hylnewdb.username=hyl_new_user
hylnewdb.password=hyl_new_1
?
deployCode=23
title=\u9ED1\u9F99\u6C5F\u5211\u4FA6\u4FE1\u606F\u4E13\u4E1A\u5E94\u7528\u7CFB\u7EDF
area=\u9ED1\u9F99\u6C5F
uploadPlace =C:/fileUpload/
uploadUrl =C\:/uploadImg/UploadAccountImg/
简单解释一下部分的含义：
1、这个程序的JNDI分别命名为jdbc、hylnowdb、hylnewdb；
2、jdbc.url代表数据库地址；
3、jdbc.username代表访问数据库用户名；
4、jdbc.password代表访问数据库用户密码；
5、jdbc.url代表数据库地址后面的这部分“jdbc:oracle:thin:@(DESCRIPTION =(ADDRESS_LIST =(LOAD_BALANCE = yes)(ADDRESS = (PROTOCOL = TCP)(HOST =192.168.56.60)(PORT = 1521))(ADDRESS = (PROTOCOL = TCP)(HOST =192.168.56.61)(PORT = 1521)))(CONNECT_DATA =(FAILOVER_MODE =(TYPE = select)(METHOD = basic))(SERVICE_NAME = hyldb)))”，这是连接的rac集群数据库，使用了手工配置客户端实现负载均衡容错的配置方式；