我是JNDI的新手,我试图让我的db连接正常工作。到目前为止没有运气。 我要么收到一条消息:“名称[java:comp/env]没有绑定在这个上下文中,找不到[java:comp]” 或者我收到了超时。Tomcat中的JNDI数据源配置7
以下是关于我当前配置的信息。
Tomcat的:的Apache Tomcat/7.0.29
JMV:1.7.0_06-B24
OS:赢得10临
的Tomcat \ CONF \ web.xml中
<resource-ref>
<description>DB Connection</description>
<res-ref-name>jdbc/myDatabaseName</res-ref-name>
<res-type>javax.sql.DataSource</res-type>
<res-auth>Container</res-auth>
</resource-ref>
Tomcat \ conf \ context.xml
<ResourceLink type="javax.sql.DataSource"
name="jdbc/localRemarket"
global="jdbc/remarket"
/>
我也试图将资源放在context.xml中,以确保它是容易找到:
<Resource
type="javax.sql.DataSource"
name="jdbc/myDatabaseName"
factory="org.apache.tomcat.jdbc.pool.DataSourceFactory"
driverClassName="com.mysql.jdbc.Driver"
url="jdbc:mysql://localhost:3306/myDatabaseName"
username="myUsername"
password="myPassword"
maxActive="1500"
maxIdle="200"
maxwait="-1"
testOnBorrow="true"
testOnReturn="true"
testWhileIdle="true"
validationQuery="SELECT 1"
timeBetweenEvictionRunsMillis="2000"
minEvictableIdleTimeMillis="15000"
removeAbandoned="true"
removeAbandonedTimeout="5"
/>
的Tomcat \的conf \ server.xml中
<Resource
type="javax.sql.DataSource"
name="jdbc/myDatabaseName"
factory="org.apache.tomcat.jdbc.pool.DataSourceFactory"
driverClassName="com.mysql.jdbc.Driver"
url="jdbc:mysql://localhost:3306/myDatabaseName"
username="myUsername"
password="myPassword"
maxActive="1500"
maxIdle="200"
maxwait="-1"
testOnBorrow="true"
testOnReturn="true"
testWhileIdle="true"
validationQuery="SELECT 1"
timeBetweenEvictionRunsMillis="2000"
minEvictableIdleTimeMillis="15000"
removeAbandoned="true"
removeAbandonedTimeout="5"
/>
java代码:
Connection conn;
public void openMyConnection() {
try {
Properties props = new Properties();
props.put("java.naming.factory.initial", "org.apache.naming.java.javaURLContextFactory");
InitialContext ctx = new InitialContext(props);
Context envCtx = (Context) ctx.lookup("java:comp/env"); // <<<<< PRB HERE
// error message : Name [java:comp/env] is not bound in this Context. Unable to find [java:comp]
org.apache.tomcat.jdbc.pool.DataSource ds = (org.apache.tomcat.jdbc.pool.DataSource) envCtx.lookup("jdbc/localDB");
conn = ds.getConnection();
} catch (Exception e) {
System.out.println(e.getMessage());
}
}
如果我改变
props.put("java.naming.factory.initial", "org.apache.naming.java.javaURLContextFactory");
为
props.put("java.naming.factory.initial", "org.jnp.interfaces.NamingContextFactory");
我得到:
收到超时
我已经审查了与JNDI很多职位,包括以下两个说是最有帮助的:
http://tomcat.apache.org/tomcat-7.0-doc/jndi-datasource-examples-howto.html and https://examples.javacodegeeks.com/enterprise-java/tomcat/tomcat-datasource-jndi-example/
请注意,我阅读How to configure jndi DataSource in Tomcat 7,但它不能解决我的问题。
任何人都可以请帮忙解决这个问题吗?