我正在连接到 LDAP，它工作正常。但是，我需要更改一个属性的值。我可以读取当前值，但无法修改该值。这是我的代码：
我从互联网上尝试了很多东西，但都导致一个错误：
[Root exception is java.net.ConnectException: Connection refused: connect] (It's always in the "executing" line of code).
at com.sun.jndi.ldap.LdapReferralContext.<init>(LdapReferralContext.java:74)
at com.sun.jndi.ldap.LdapReferralException.getReferralContext(LdapReferralException.java:132)
at com.sun.jndi.ldap.LdapCtx.c_bind(LdapCtx.java:410)
at com.sun.jndi.ldap.LdapCtx.c_bind(LdapCtx.java:357)
at com.sun.jndi.toolkit.ctx.ComponentContext.p_bind(ComponentContext.java:596)
at com.sun.jndi.toolkit.ctx.PartialCompositeContext.bind(PartialCompositeContext.java:183)
at com.sun.jndi.toolkit.ctx.PartialCompositeContext.bind(PartialCompositeContext.java:173)
at javax.naming.InitialContext.bind(InitialContext.java:400)
at Client.connect(Client.java:80)
at Main.main(Main.java:22)
Caused by: java.net.ConnectException: Connection refused: connect
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:351)
at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:213)
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:200)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:366)
at java.net.Socket.connect(Socket.java:529)
at com.sun.net.ssl.internal.ssl.SSLSocketImpl.connect(SSLSocketImpl.java:570)
at com.sun.net.ssl.internal.ssl.SSLSocketImpl.<init>(SSLSocketImpl.java:371)
at com.sun.net.ssl.internal.ssl.SSLSocketFactoryImpl.createSocket(SSLSocketFactoryImpl.java:71)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at com.sun.jndi.ldap.Connection.createSocket(Connection.java:316)
at com.sun.jndi.ldap.Connection.<init>(Connection.java:186)
at com.sun.jndi.ldap.LdapClient.<init>(LdapClient.java:116)
at com.sun.jndi.ldap.LdapClient.getInstance(LdapClient.java:1580)
at com.sun.jndi.ldap.LdapCtx.connect(LdapCtx.java:2678)
at com.sun.jndi.ldap.LdapCtx.<init>(LdapCtx.java:296)
at com.sun.jndi.ldap.LdapCtxFactory.getUsingURL(LdapCtxFactory.java:175)
at com.sun.jndi.ldap.LdapCtxFactory.getLdapCtxInstance(LdapCtxFactory.java:134)
at com.sun.jndi.url.ldap.ldapURLContextFactory.getObjectInstance(ldapURLContextFactory.java:35)
at javax.naming.spi.NamingManager.getURLObject(NamingManager.java:584)
at javax.naming.spi.NamingManager.processURL(NamingManager.java:364)
at javax.naming.spi.NamingManager.processURLAddrs(NamingManager.java:344)
at javax.naming.spi.NamingManager.getObjectInstance(NamingManager.java:316)
at com.sun.jndi.ldap.LdapReferralContext.<init>(LdapReferralContext.java:93)
这就是我尝试过的 - 我做错了什么？请给我一些建议。
Attribute mod0 = new BasicAttribute("attribute", "AAA");
mods[0] = new ModificationItem(DirContext.REPLACE_ATTRIBUTE, mod0);
authContext.modifyAttributes("correctDn", mods);
后来，我尝试了这个：
Attribute acl = new BasicAttribute( "attribute", "asdf");
authContext.modify( entryDN, new LDAPModification(LDAPModification.ADD, acl));