diff --git a/dolphinscheduler-api/pom.xml b/dolphinscheduler-api/pom.xml
index 75122e8df9..df58a777b9 100644
--- a/dolphinscheduler-api/pom.xml
+++ b/dolphinscheduler-api/pom.xml
@@ -280,6 +280,13 @@
             <groupId>net.sf.py4j</groupId>
             <artifactId>py4j</artifactId>
         </dependency>
+
+        <dependency>
+            <groupId>org.springframework</groupId>
+            <artifactId>spring-ldap</artifactId>
+            <version>1.1.2</version>
+        </dependency>
+
     </dependencies>
 
     <build>
diff --git a/dolphinscheduler-api/src/main/java/org/apache/dolphinscheduler/api/security/impl/ldap/LdapService.java b/dolphinscheduler-api/src/main/java/org/apache/dolphinscheduler/api/security/impl/ldap/LdapService.java
index dd2123bd1c..15514a766f 100644
--- a/dolphinscheduler-api/src/main/java/org/apache/dolphinscheduler/api/security/impl/ldap/LdapService.java
+++ b/dolphinscheduler-api/src/main/java/org/apache/dolphinscheduler/api/security/impl/ldap/LdapService.java
@@ -35,11 +35,13 @@ import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.beans.factory.annotation.Value;
 import org.springframework.context.annotation.Configuration;
+import org.springframework.ldap.support.filter.EqualsFilter;
 import org.springframework.stereotype.Component;
 
 @Component
 @Configuration
 public class LdapService {
+
     private static final Logger logger = LoggerFactory.getLogger(LdapService.class);
 
     @Value("${security.authentication.ldap.user.admin:#{null}}")
@@ -87,15 +89,14 @@ public class LdapService {
             SearchControls sc = new SearchControls();
             sc.setReturningAttributes(new String[]{ldapEmailAttribute});
             sc.setSearchScope(SearchControls.SUBTREE_SCOPE);
-            String searchFilter = String.format("(%s=%s)", ldapUserIdentifyingAttribute, userId);
-            //Search for the user you want to authenticate, search him with some attribute
-            NamingEnumeration<SearchResult> results = ctx.search(ldapBaseDn, searchFilter, sc);
+            EqualsFilter filter = new EqualsFilter(ldapUserIdentifyingAttribute, userId);
+            NamingEnumeration<SearchResult> results = ctx.search(ldapBaseDn, filter.toString(), sc);
             if (results.hasMore()) {
                 // get the users DN (distinguishedName) from the result
                 SearchResult result = results.next();
                 NamingEnumeration attrs = result.getAttributes().getAll();
                 while (attrs.hasMore()) {
-                    //Open another connection to the LDAP server with the found DN and the password
+                    // Open another connection to the LDAP server with the found DN and the password
                     searchEnv.put(Context.SECURITY_PRINCIPAL, result.getNameInNamespace());
                     searchEnv.put(Context.SECURITY_CREDENTIALS, userPwd);
                     try {
diff --git a/tools/dependencies/known-dependencies.txt b/tools/dependencies/known-dependencies.txt
index 1e35f78b75..8b5564d057 100755
--- a/tools/dependencies/known-dependencies.txt
+++ b/tools/dependencies/known-dependencies.txt
@@ -228,6 +228,7 @@ springfox-spring-web-2.9.2.jar
 springfox-swagger-common-2.9.2.jar
 springfox-swagger-ui-2.9.2.jar
 springfox-swagger2-2.9.2.jar
+spring-ldap-1.1.2.jar
 swagger-annotations-1.5.20.jar
 swagger-bootstrap-ui-1.9.3.jar
 swagger-models-1.5.24.jar