我正在尝试使用 Tomcat 7 中的 MySql 连接池设置领域。我已阅读所有文档并阅读了人们遇到的许多类似问题,但都没有运气。
我已经为连接池配置了 Tomcat 7,我使用 test.jsp 成功测试了该连接池(图 1)。
图 2 是我的应用程序上下文文件。请注意,注释掉的领域有效(显然在没有注释掉时),但我相信它不使用连接池或 jndi 资源。相反,它每次都会创建一个新连接。未注释掉的领域,引用了 JNDI 配置的连接池。这与图 1 中的测试代码使用的 JNDI 资源相同。但是,当领域尝试验证用户登录请求时,它会引发异常(图 3),说明Name jdbc is not bound in this Context
. 我在这里使用 DataSourceRealm 是否弄错了?我错过了什么?
图 1 - test.jsp(工作正常):
<%@ taglib uri="http://java.sun.com/jsp/jstl/sql" prefix="sql" %>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<sql:query var="rs" dataSource="jdbc/TestDB">
select email, password from users
</sql:query>
<html>
<head>
<title>DB Test</title>
</head>
<body>
<h2>Results</h2>
<c:forEach var="row" items="${rs.rows}">
Email ${row.email}<br/>
Password ${row.password}<br/>
</c:forEach>
</body>
</html>
图 2 - Context.xml:
<context>
<Resource auth="Container" driverClassName="com.mysql.jdbc.Driver"
factory="org.apache.tomcat.jdbc.pool.DataSourceFactory" initialSize="10"
jdbcInterceptors="org.apache.tomcat.jdbc.pool.interceptor.ConnectionState;
org.apache.tomcat.jdbc.pool.interceptor.StatementFinalizer"
jmxEnabled="true" logAbandoned="true" maxActive="100" maxWait="10000"
minEvictableIdleTimeMillis="30000" minIdle="10" name="jdbc/TestDB"
password="security" removeAbandoned="true" removeAbandonedTimeout="60"
testOnBorrow="true" testOnReturn="false" testWhileIdle="true"
timeBetweenEvictionRunsMillis="30000" type="javax.sql.DataSource"
url="jdbc:mysql://localhost:3306/estimate" username="security"
validationInterval="30000" validationQuery="SELECT 1" />
<!-- <Realm className="org.apache.catalina.realm.JDBCRealm" -->
<!-- driverName="com.mysql.jdbc.Driver" -->
<!-- connectionURL="jdbc:mysql://localhost:3306/estimate?user=security&password=security" -->
<!-- userTable="users" userNameCol="email" userCredCol="password" -->
<!-- userRoleTable="user_roles" roleNameCol="role" /> -->
<Realm className="org.apache.catalina.realm.DataSourceRealm"
dataSourceName="jdbc/TestDB" userTable="users" userNameCol="email"
userCredCol="password" userRoleTable="user_roles" roleNameCol="role" />
</context>
图 3 - 我得到的异常:
Jul 05, 2013 2:16:03 PM org.apache.catalina.realm.DataSourceRealm open
SEVERE: Exception performing authentication
javax.naming.NameNotFoundException: Name jdbc is not bound in this Context
at org.apache.naming.NamingContext.lookup(NamingContext.java:803)
at org.apache.naming.NamingContext.lookup(NamingContext.java:159)
at org.apache.catalina.realm.DataSourceRealm.open(DataSourceRealm.java:394)
at org.apache.catalina.realm.DataSourceRealm.authenticate(DataSourceRealm.java:285)
at org.apache.catalina.authenticator.FormAuthenticator.authenticate(FormAuthenticator.java:282)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:440)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:164)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:562)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:395)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:250)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:188)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:302)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
这可能是我犯的一些愚蠢的错误,但我已经为此工作了好几天。