问题描述
我在我的项目中实现了 LDAP 连接池,并注意到一个奇怪的行为,每次新的连接请求到来时,我配置的 LDAP 连接池都会返回新连接,而不是重新使用返回到池中的现有连接.
I have implemented LDAP connection pooling in my project and noticed a strange behavior that every time new connection request comes, LDAP connection pool I configured is returning new connection instead of re-using existing connection returned to pool.
LDAP JNDI 日志:
00:07:10,824 ERROR [stderr] (IP*****GlobalDataReloader) Create and use com.sun.jndi.ldap.LdapClient@46728c0f[eun2p3-be.stp-qa.st.com:636] 00:07:12,222 ERROR [stderr] (IP*****GlobalDataReloader) Release com.sun.jndi.ldap.LdapClient@46728c0f 00:07:46,704 ERROR [stderr] (Thread-65) Expired com.sun.jndi.ldap.LdapClient@674b68bd expired 00:08:46,707 ERROR [stderr] (Thread-65) Expired com.sun.jndi.ldap.LdapClient@46728c0f expired 00:22:26,329 ERROR [stderr] (IP*****GlobalDataReloader) Create com.sun.jndi.ldap.LdapClient@386bfda[eun2p3-be.stp-qa.st.com:636] 00:22:26,333 ERROR [stderr] (IP*****GlobalDataReloader) Create and use com.sun.jndi.ldap.LdapClient@6d9f3716[eun2p3-be.stp-qa.st.com:636] 00:22:27,748 ERROR [stderr] (IP*****GlobalDataReloader) Release com.sun.jndi.ldap.LdapClient@6d9f3716 00:22:46,730 ERROR [stderr] (Thread-65) Expired com.sun.jndi.ldap.LdapClient@386bfda expired 00:23:46,734 ERROR [stderr] (Thread-65) Expired com.sun.jndi.ldap.LdapClient@6d9f3716 expired 00:37:45,242 ERROR [stderr] (IP*****GlobalDataReloader) Create com.sun.jndi.ldap.LdapClient@4a21c217[eun2p3-be.stp-qa.st.com:636] 00:37:45,244 ERROR [stderr] (IP*****GlobalDataReloader) Create and use com.sun.jndi.ldap.LdapClient@1b79ab6f[eun2p3-be.stp-qa.st.com:636] 00:37:46,759 ERROR [stderr] (Thread-65) Expired com.sun.jndi.ldap.LdapClient@4a21c217 expired 00:37:46,823 ERROR [stderr] (IP*****GlobalDataReloader) Release com.sun.jndi.ldap.LdapClient@1b79ab6f 00:39:46,764 ERROR [stderr] (Thread-65) Expired com.sun.jndi.ldap.LdapClient@1b79ab6f expired 00:53:00,864 ERROR [stderr] (IP*****GlobalDataReloader) Create com.sun.jndi.ldap.LdapClient@668fc34[eun2p3-be.stp-qa.st.com:636] 00:53:00,865 ERROR [stderr] (IP*****GlobalDataReloader) Create and use com.sun.jndi.ldap.LdapClient@4674a7fb[eun2p3-be.stp-qa.st.com:636] 00:53:02,392 ERROR [stderr] (IP*****GlobalDataReloader) Release com.sun.jndi.ldap.LdapClient@4674a7fb 00:53:46,787 ERROR [stderr] (Thread-65) Expired com.sun.jndi.ldap.LdapClient@668fc34 expired 00:54:46,791 ERROR [stderr] (Thread-65) Expired com.sun.jndi.ldap.LdapClient@4674a7fb expired
我的连接设置:
Hashtable<String, String> env = new Hashtable<String, String>(); env.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.ldap.LdapCtxFactory"); env.put(Context.PROVIDER_URL, "ldaps://" + server + ":" + serverPort); env.put(Context.SECURITY_AUTHENTICATION, "simple"); env.put(Context.SECURITY_PRINCIPAL, pUserName); env.put(Context.SECURITY_CREDENTIALS, pPassword); env.put(LdapContext.CONTROL_FACTORIES, "com.sun.jndi.ldap.ControlFactory"); env.put(Context.SECURITY_PROTOCOL, "ssl"); env.put("com.sun.jndi.ldap.read.timeout", "300000"); Security.addProvider(new com.sun.net.ssl.internal.ssl.Provider()); // load the location of keystore that holds trusted root certificates from web.xml ServletContext context = ApplicationServlet.getApplication().getServlet().getServletContext(); String certificatePath = context.getInitParameter("AD_CERTIFICATE_PATH"); System.setProperty("javax.net.ssl.trustStore", certificatePath); // System.setProperty("javax.net.debug", "all"); // For connection pooling env.put("com.sun.jndi.ldap.connect.pool", "true"); System.setProperty("com.sun.jndi.ldap.connect.pool.protocol", "plain ssl"); System.setProperty("com.sun.jndi.ldap.connect.pool.maxsize", poolMaxSize); System.setProperty("com.sun.jndi.ldap.connect.pool.prefsize", poolPrefSize); System.setProperty("com.sun.jndi.ldap.connect.pool.timeout", poolTimeOut); System.setProperty("com.sun.jndi.ldap.connect.pool.debug", "fine"); ctx = new InitialDirContext(env); return (DirContext) ctx;
感谢您确定根本原因在哪里,为什么每次都创建新连接而不是重复使用.
Thanks in identifying where is the root cause, why every time new connection is created instead of reused.
推荐答案
您还没有实现任何连接池,您使用的是 Sun 的损坏的 DirContext 连接池.这是不鼓励的.看看 Spring LDAP 的 ContextSource 池.效果很好.
You have not implemented any connection pooling, you are using the broken DirContext connection pool from Sun. This is discouraged. Take a look at Spring LDAP's ContextSource pool. It works very well.