javaldap連接

A. 用java操作ldap是報錯，求大神解救

出自 http://blog.csdn.net/techchan/article/details/5440775

1. error code 53
===========================================================================
問題：創建新用戶時出現數據後端異常
在 WebSphere Portal Express 中，您可以設置密碼的最短和最長長度。如果設置的密碼長度與 LDAP 伺服器的策略不相同，則在創建用戶時您可能會看到以下異常：
EJPSG0015E: Data Backend Problem com.ibm.websphere.wmm.exception.WMMSystemException:
The following Naming Exception occurred ring processing:
"javax.naming.: [LDAP: error code 53 - 0000052D:
SvcErr: DSID-031A0FBC, problem 5003 (WILL_NOT_PERFORM), data 0
]; remaining name 'cn=see1anna,cn=users,dc=wps510,dc=rtp,dc=raleigh,dc=ibm,dc=com';
resolved object com.sun.jndi.ldap.LdapCtx@7075b1b4".

原因：這是由於「密碼不能滿足密碼策略的要求」導致

解決方案：
1. 打開域安全策略-安全設置-賬戶策略-密碼策略-密碼必須符合復雜性要求。定義這個策略設置為:已禁用。/ 密碼長度最小值：定義這個策略設置為0。

2. 打開域控制器安全策略-安全設置-賬戶策略-密碼策略-密碼必須符合復雜性要求。定義這個策略設置為：已禁用。/ 密碼長度最小值：定義這個策略設置為0。

3. 最後運行刷新組策略命令為：gpupdate /force

===========================================================================

2. Need to specify class name
===========================================================================
javax.naming.NoInitialContextException: Need to specify class name in environment or system property, or as an applet parameter, or in an application resource file: java.naming.factory.initial

原因：LdapContext在處理完上個環節被close(),LdapContext=null;
解決方案：不close;

3. error code 50
===========================================================================
javax.naming.NoPermissionException: [LDAP: error code 50 - 00002098: SecErr: DSID-03150A45, problem 4003 (INSUFF_ACCESS_RIGHTS), data 0

4. error code 68
===========================================================================
javax.naming.NameAlreadyBoundException: [LDAP: error code 68 - 00000524: UpdErr: DSID-031A0F4F, problem 6005 (ENTRY_EXISTS), data 0

原因：創建的用戶已經存在了

7. No trusted certificate
===========================================================================
javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: No trusted certificate found
1.cas機器A，A上a,b,c服務運行良好
2.website 位於B機器，cas可以截獲請求，跳轉javax.net.ssl.SSLHandshakeException

將A上生生成的客戶端密鑰，導入B
A運行
sudo keytool -genkey -alias tomcat -keyalg RSA -keypass changeit -storepass changeit -keystore server.keystore -validity 3600

$ keytool -export -trustcacerts -alias tomcat -file server.cer -keystore server.keystore -storepass changeit

$ sudo keytool -import -trustcacerts -alias tomcat -file server.cer -keystore $JAVA_HOME/jre/lib/security/cacerts -storepass changeit
B運行最後一句即可

建立信任關系，客戶，服務密鑰，客戶多處

8. error code 1
===========================================================================
javax.naming.NamingException: [LDAP: error code 1 - 00000000: LdapErr: DSID-0C090AE2, comment: In order to perform this operation a successful bind must be completed on the connection., data 0, vece

原因：新增域用戶的時候，ctx沒有綁定管理員用戶
解決方法：ctx.addToEnvironment(Context.SECURITY_PRINCIPAL, adminUser + "@" + ldapProperty.getDomain());
ctx.addToEnvironment(Context.SECURITY_CREDENTIALS, adminPwd);

9. error code 50
==========================================================================
javax.naming.NoPermissionException: [LDAP: error code 50 - 00000005: SecErr: DSID-03151E04, problem 4003 (INSUFF_ACCESS_RIGHTS)

原因：新建域用戶時候，ctx綁定到一個普通用戶（該用戶沒有新建用戶的許可權）
解決方法：使用管理員用戶進行綁定：
ctx.addToEnvironment(Context.SECURITY_PRINCIPAL, adminUser + "@" + ldapProperty.getDomain());
ctx.addToEnvironment(Context.SECURITY_CREDENTIALS, adminPwd);

10. error code 19
==========================================================================
javax.naming.directory.: [LDAP: error code 19 - 0000052D: AtrErr: DSID-03190F00, #1:
0: 0000052D: DSID-03190F00, problem 1005 (CONSTRAINT_ATT_TYPE)

原因：這個最大的可能是不滿足域安全策略：如密碼復雜性、密碼最短使用期限、強制密碼歷史。即長度、包含的字元、多久可以修改密碼、是否可以使用歷史密碼等。

11. LDAP: error code 50
==========================================================================
javax.naming.NoPermissionException: [LDAP: error code 50 - 00000005: SecErr: DSID-031A0F44, problem 4003 (INSUFF_ACCESS_RIGHTS)

原因:這個是最初代碼使用的replace操作，這個在AD里對應的是密碼重設（普通用戶默認沒有這個許可權，管理員可以操作），另外remove操作時提供的舊密碼錯誤也可能報這個異常

12. RSA premaster secret error
==========================================================================
javax.naming.CommunicationException: simple bind failed: 172.18.20.4:636 [Root exception is javax.net.ssl.SSLKeyException: RSA premaster secret error]

原因：Tomcat 配置的JDK與添加證書的的JDK不一致。如：證書存放路徑為C:/Java/jdk1.6.0_10/jre/lib/cacerts 而Tomcat 配置的JDK為C:/Java/jre6 ，使得兩者路徑不一致，SSL驗證的時候，找不到證書

13.No trusted certificate found
==========================================================================

javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: No trusted certificate found

原因：信任證書庫文件路徑不正確
解決方法：將正確工程中 /WEB-INF/classes目錄下

14. error code 49
==========================================================================
javax.naming.AuthenticationException: [LDAP: error code 49 - 80090308: LdapErr: DSID-0C090334, comment: AcceptSecurityContext error, data 52e, vece
希望可以幫到你

B. JAVA連接LDAP(Windows AD)驗證時，密碼為空驗證通過的問題

密碼為空 ，實際值是null

任何值與null比較時，記得返回值都是true，

故在程序里需要預先把空值過濾掉

if(pwd==null)
System.out.println("輸入密碼為空，驗證不通過！");

C. 如何使用Java操作LDAP之LDAP連接

public static void main(String[] args) {
String url = "ldap://10.0.0.10:389/";
String domain = "dc=dtas,dc=com";
String user = "cn=administrator,cn=users";
String password = "111111";
Hashtable<String, String> env = new Hashtable<String, String>();
env.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.ldap.LdapCtxFactory"); // LDAP 工廠
env.put(Context.SECURITY_AUTHENTICATION, "simple"); // LDAP訪問安全級別
env.put(Context.PROVIDER_URL, url);
env.put(Context.SECURITY_PRINCIPAL, user+","+domain); // 填DN
env.put(Context.SECURITY_CREDENTIALS, password); // AD Password
env.put("java.naming.ldap.attributes.binary", "objectSid objectGUID");
LdapContext ldapCtx = null;
try {
ldapCtx = new InitialLdapContext(env , null);
queryGroup(ldapCtx);
//queryUser(ldapCtx);

} catch (NamingException e) {
e.printStackTrace();
} finally {
if(ldapCtx != null) {
try {
ldapCtx.close();
} catch (NamingException e) {
}
}
}
}

private static void queryGroup(LdapContext ldapCtx) throws NamingException {
SearchControls searchCtls = new SearchControls();
searchCtls.setSearchScope(SearchControls.SUBTREE_SCOPE);
String searchFilter = "objectClass=organizationalUnit";
String searchBase = "ou=myDeptSubDept,ou=myDept,dc=DS-66,dc=com";
String returnedAtts[] = {"distinguishedName", "objectGUID", "name"};
searchCtls.setReturningAttributes(returnedAtts);
NamingEnumeration<SearchResult> answer = ldapCtx.search(searchBase, searchFilter, searchCtls);
while (answer.hasMoreElements()) {
SearchResult sr = answer.next();
Attributes Attrs = sr.getAttributes();
if (Attrs != null) {
NamingEnumeration<?> ne = Attrs.getAll();
while(ne.hasMore()) {
Attribute Attr = (Attribute)ne.next();
String name = Attr.getID();
Enumeration<?> values = Attr.getAll();
if (values != null) { // 迭代
while (values.hasMoreElements()) {
String value = "";
if("objectGUID".equals(name)) {
value = UUID.nameUUIDFromBytes((byte[]) values.nextElement()).toString();
} else {
value = (String)values.nextElement();
}
System.out.println(name + " " + value);
}
}
}
System.out.println("=====================");
}
}

}