我的JNDI连接池似乎没有按照预期工作。当我运行测试时,我看到每次都会创建新的连接。连接成功了(因为我可以对Active Directory进行查询),但它们并没有像我期望的那样进行池化。这里有一些关于我的设置的重要说明。
连接是通过SSL(即ldaps)进行的
使用定制插座工厂
通过 "简单 "的认证方式对AD进行认证
使用默认的池子配置值(目前)。
下面是相关代码。
TestLdapsPooling.java
public class TestLdapsPooling {
public static void main(String[] args) throws Exception {
// needed system properties
System.setProperty("com.sun.jndi.ldap.connect.pool.protocol", "ssl");
System.setProperty("com.sun.jndi.ldap.connect.pool.debug", "fine");
Hashtable<String, String> env = new Hashtable<>();
env.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.ldap.LdapCtxFactory");
env.put(Context.PROVIDER_URL, host);
// use ssl
env.put(Context.SECURITY_PROTOCOL, "ssl");
// authentication info
env.put(Context.SECURITY_AUTHENTICATION, "simple");
env.put(Context.SECURITY_PRINCIPAL, username);
env.put(Context.SECURITY_CREDENTIALS, password);
// custom socket factory
env.put("java.naming.ldap.factory.socket", "ldap.TrustedSocketFactory");
// Enable connection pooling
env.put("com.sun.jndi.ldap.connect.pool", "true");
// Create the initial context
InitialDirContext context = new InitialDirContext(env);
System.out.println("First context created");
// Create a second context
InitialDirContext context2 = new InitialDirContext(env);
System.out.println("Second context created");
// close first context
context.close();
System.out.println("First context closed");
// close second context
context2.close();
System.out.println("Second context closed");
// Create a third context - I would expect this to use a connection from the pool
InitialDirContext context3 = new InitialDirContext(env);
System.out.println("Third context created");
// close third context
context3.close();
System.out.println("Third context closed");
}
}
TrustedSocketFactory.java
public class TrustedSocketFactory extends SSLSocketFactory implements Comparator<SocketFactory> {
// all the methods required from SSLSocketFactory
@Override
public int compare(SocketFactory arg0, SocketFactory arg1) {
// not really sure what this value should be
// is this causing the pooling issue?
return 0;
}
}
产量:
Create com.sun.jndi.ldap.LdapClient@3f0ee7cb[testdomain.com:636]
Use com.sun.jndi.ldap.LdapClient@3f0ee7cb
First context created
Create com.sun.jndi.ldap.LdapClient@75bd9247[testdomain.com:636]
Use com.sun.jndi.ldap.LdapClient@75bd9247
Second context created
Release com.sun.jndi.ldap.LdapClient@3f0ee7cb
First context closed
Release com.sun.jndi.ldap.LdapClient@75bd9247
Second context closed
Create com.sun.jndi.ldap.LdapClient@7d417077[testdomain.com:636]
Use com.sun.jndi.ldap.LdapClient@7d417077
Third context created
Release com.sun.jndi.ldap.LdapClient@7d417077
Third context closed
我希望第三个上下文能够重用前两个连接中的一个,但输出看起来像是创建了自己的连接。我需要改变什么才能使连接被重复使用,而不是创建一个新的连接?
基于"什么会被集中起来"的部分 https:/docs.oracle.comjavasejnditutorialldapconnectconfig.html。 可能是自定义套接字工厂禁用了池化连接。
有几个环境属性会自动剥夺Context实例使用池化连接的资格。如果Context实例的 "java.naming.ldap.factory.socket "属性被设置为自定义套接字工厂类,它就不能使用池化连接(...)