我是JNDI的新手,我試圖讓我的db連接正常工作。到目前爲止沒有運氣。 我要麼收到一條消息:「名稱[java:comp/env]沒有綁定在這個上下文中,找不到[java:comp]」 或者我收到了超時。Tomcat中的JNDI數據源配置7
以下是關於我當前配置的信息。
Tomcat的:的Apache Tomcat/7.0.29
JMV:1.7.0_06-B24
OS:贏得10臨
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"
/>
我也試圖將資源放在context.xml中,以確保它是容易找到:
<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代碼:
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());
}
}
如果我改變
props.put("java.naming.factory.initial", "org.apache.naming.java.javaURLContextFactory");
爲
props.put("java.naming.factory.initial", "org.jnp.interfaces.NamingContextFactory");
我得到:
收到超時
我已經審查了與JNDI很多職位,包括以下兩個說是最有幫助的:
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/
請注意,我閱讀How to configure jndi DataSource in Tomcat 7,但它不能解決我的問題。
任何人都可以請幫忙解決這個問題嗎?