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        每次从 Ldap 连接池返回新连接

        Every time new Connection is returned from Ldap connection pool(每次从 Ldap 连接池返回新连接)
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                  本文介绍了每次从 Ldap 连接池返回新连接的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着跟版网的小编来一起学习吧!

                  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] (IPAdminGlobalDataReloader) Create and use com.sun.jndi.ldap.LdapClient@46728c0f[eun2p3-be.stp-qa.st.com:636]
                  00:07:12,222 ERROR [stderr] (IPAdminGlobalDataReloader) 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] (IPAdminGlobalDataReloader) Create com.sun.jndi.ldap.LdapClient@386bfda[eun2p3-be.stp-qa.st.com:636]
                  00:22:26,333 ERROR [stderr] (IPAdminGlobalDataReloader) Create and use com.sun.jndi.ldap.LdapClient@6d9f3716[eun2p3-be.stp-qa.st.com:636]
                  00:22:27,748 ERROR [stderr] (IPAdminGlobalDataReloader) 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] (IPAdminGlobalDataReloader) Create com.sun.jndi.ldap.LdapClient@4a21c217[eun2p3-be.stp-qa.st.com:636]
                  00:37:45,244 ERROR [stderr] (IPAdminGlobalDataReloader) 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] (IPAdminGlobalDataReloader) 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] (IPAdminGlobalDataReloader) Create com.sun.jndi.ldap.LdapClient@668fc34[eun2p3-be.stp-qa.st.com:636]
                  00:53:00,865 ERROR [stderr] (IPAdminGlobalDataReloader) Create and use com.sun.jndi.ldap.LdapClient@4674a7fb[eun2p3-be.stp-qa.st.com:636]
                  00:53:02,392 ERROR [stderr] (IPAdminGlobalDataReloader) 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.

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