diff --git a/pom.xml b/pom.xml
index 6206bd6..344098c 100755
--- a/pom.xml
+++ b/pom.xml
@@ -1,7 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <name>elasticsearch-analysis-ik</name>
     <modelVersion>4.0.0</modelVersion>
     <groupId>org.elasticsearch</groupId>
@@ -12,8 +11,8 @@
     <inceptionYear>2011</inceptionYear>
 
     <properties>
-        <elasticsearch.version>8.4.1</elasticsearch.version>
-        <maven.compiler.target>1.8</maven.compiler.target>
+        <elasticsearch.version>8.8.1</elasticsearch.version>
+        <maven.compiler.target>17</maven.compiler.target>
         <elasticsearch.assembly.descriptor>${project.basedir}/src/main/assemblies/plugin.xml</elasticsearch.assembly.descriptor>
         <elasticsearch.plugin.name>analysis-ik</elasticsearch.plugin.name>
         <elasticsearch.plugin.classname>org.elasticsearch.plugin.analysis.ik.AnalysisIkPlugin</elasticsearch.plugin.classname>
@@ -69,8 +68,12 @@
         <repository>
             <id>oss.sonatype.org</id>
             <name>OSS Sonatype</name>
-            <releases><enabled>true</enabled></releases>
-            <snapshots><enabled>true</enabled></snapshots>
+            <releases>
+                <enabled>true</enabled>
+            </releases>
+            <snapshots>
+                <enabled>true</enabled>
+            </snapshots>
             <url>https://oss.sonatype.org/content/repositories/releases/</url>
         </repository>
     </repositories>
@@ -87,13 +90,13 @@
         <dependency>
             <groupId>org.apache.httpcomponents</groupId>
             <artifactId>httpclient</artifactId>
-            <version>4.5.2</version>
+            <version>4.5.14</version>
         </dependency>
 
         <dependency>
             <groupId>org.apache.logging.log4j</groupId>
             <artifactId>log4j-api</artifactId>
-            <version>2.18.0</version>
+            <version>2.19.0</version>
         </dependency>
 
         <dependency>
@@ -187,83 +190,83 @@
                 <additionalparam>-Xdoclint:none</additionalparam>
             </properties>
         </profile>
-            <profile>
-                <id>release</id>
-                <build>
-                    <plugins>
-                        <plugin>
-                            <groupId>org.sonatype.plugins</groupId>
-                            <artifactId>nexus-staging-maven-plugin</artifactId>
-                            <version>1.6.3</version>
-                            <extensions>true</extensions>
-                            <configuration>
-                                <serverId>oss</serverId>
-                                <nexusUrl>https://oss.sonatype.org/</nexusUrl>
-                                <autoReleaseAfterClose>true</autoReleaseAfterClose>
-                            </configuration>
-                        </plugin>
-                        <plugin>
-                            <groupId>org.apache.maven.plugins</groupId>
-                            <artifactId>maven-release-plugin</artifactId>
-                            <version>2.1</version>
-                            <configuration>
-                                <autoVersionSubmodules>true</autoVersionSubmodules>
-                                <useReleaseProfile>false</useReleaseProfile>
-                                <releaseProfiles>release</releaseProfiles>
-                                <goals>deploy</goals>
-                            </configuration>
-                        </plugin>
-                        <plugin>
-                            <groupId>org.apache.maven.plugins</groupId>
-                            <artifactId>maven-compiler-plugin</artifactId>
-                            <version>3.5.1</version>
-                            <configuration>
-                                <source>${maven.compiler.target}</source>
-                                <target>${maven.compiler.target}</target>
-                            </configuration>
-                        </plugin>
-                        <plugin>
-                            <groupId>org.apache.maven.plugins</groupId>
-                            <artifactId>maven-gpg-plugin</artifactId>
-                            <version>1.5</version>
-                            <executions>
-                                <execution>
-                                    <id>sign-artifacts</id>
-                                    <phase>verify</phase>
-                                    <goals>
-                                        <goal>sign</goal>
-                                    </goals>
-                                </execution>
-                            </executions>
-                        </plugin>
-                        <plugin>
-                            <groupId>org.apache.maven.plugins</groupId>
-                            <artifactId>maven-source-plugin</artifactId>
-                            <version>2.2.1</version>
-                            <executions>
-                                <execution>
-                                    <id>attach-sources</id>
-                                    <goals>
-                                        <goal>jar-no-fork</goal>
-                                    </goals>
-                                </execution>
-                            </executions>
-                        </plugin>
-                        <plugin>
-                            <groupId>org.apache.maven.plugins</groupId>
-                            <artifactId>maven-javadoc-plugin</artifactId>
-                            <version>2.9</version>
-                            <executions>
-                                <execution>
-                                    <id>attach-javadocs</id>
-                                    <goals>
-                                        <goal>jar</goal>
-                                    </goals>
-                                </execution>
-                            </executions>
-                        </plugin>
-                    </plugins>
-                </build>
-            </profile>
+        <profile>
+            <id>release</id>
+            <build>
+                <plugins>
+                    <plugin>
+                        <groupId>org.sonatype.plugins</groupId>
+                        <artifactId>nexus-staging-maven-plugin</artifactId>
+                        <version>1.6.3</version>
+                        <extensions>true</extensions>
+                        <configuration>
+                            <serverId>oss</serverId>
+                            <nexusUrl>https://oss.sonatype.org/</nexusUrl>
+                            <autoReleaseAfterClose>true</autoReleaseAfterClose>
+                        </configuration>
+                    </plugin>
+                    <plugin>
+                        <groupId>org.apache.maven.plugins</groupId>
+                        <artifactId>maven-release-plugin</artifactId>
+                        <version>2.1</version>
+                        <configuration>
+                            <autoVersionSubmodules>true</autoVersionSubmodules>
+                            <useReleaseProfile>false</useReleaseProfile>
+                            <releaseProfiles>release</releaseProfiles>
+                            <goals>deploy</goals>
+                        </configuration>
+                    </plugin>
+                    <plugin>
+                        <groupId>org.apache.maven.plugins</groupId>
+                        <artifactId>maven-compiler-plugin</artifactId>
+                        <version>3.5.1</version>
+                        <configuration>
+                            <source>${maven.compiler.target}</source>
+                            <target>${maven.compiler.target}</target>
+                        </configuration>
+                    </plugin>
+                    <plugin>
+                        <groupId>org.apache.maven.plugins</groupId>
+                        <artifactId>maven-gpg-plugin</artifactId>
+                        <version>1.5</version>
+                        <executions>
+                            <execution>
+                                <id>sign-artifacts</id>
+                                <phase>verify</phase>
+                                <goals>
+                                    <goal>sign</goal>
+                                </goals>
+                            </execution>
+                        </executions>
+                    </plugin>
+                    <plugin>
+                        <groupId>org.apache.maven.plugins</groupId>
+                        <artifactId>maven-source-plugin</artifactId>
+                        <version>2.2.1</version>
+                        <executions>
+                            <execution>
+                                <id>attach-sources</id>
+                                <goals>
+                                    <goal>jar-no-fork</goal>
+                                </goals>
+                            </execution>
+                        </executions>
+                    </plugin>
+                    <plugin>
+                        <groupId>org.apache.maven.plugins</groupId>
+                        <artifactId>maven-javadoc-plugin</artifactId>
+                        <version>2.9</version>
+                        <executions>
+                            <execution>
+                                <id>attach-javadocs</id>
+                                <goals>
+                                    <goal>jar</goal>
+                                </goals>
+                            </execution>
+                        </executions>
+                    </plugin>
+                </plugins>
+            </build>
+        </profile>
     </profiles>
 </project>
diff --git a/src/main/java/org/wltea/analyzer/lucene/IKTokenizer.java b/src/main/java/org/wltea/analyzer/lucene/IKTokenizer.java
index 42d380a..3a81c57 100644
--- a/src/main/java/org/wltea/analyzer/lucene/IKTokenizer.java
+++ b/src/main/java/org/wltea/analyzer/lucene/IKTokenizer.java
@@ -30,14 +30,11 @@ import org.apache.lucene.analysis.Tokenizer;
 import org.apache.lucene.analysis.tokenattributes.CharTermAttribute;
 import org.apache.lucene.analysis.tokenattributes.OffsetAttribute;
 import org.apache.lucene.analysis.tokenattributes.TypeAttribute;
-import org.elasticsearch.common.settings.Settings;
-import org.elasticsearch.env.Environment;
 import org.wltea.analyzer.cfg.Configuration;
 import org.wltea.analyzer.core.IKSegmenter;
 import org.wltea.analyzer.core.Lexeme;
 
 import java.io.IOException;
-import java.io.Reader;
 import org.apache.lucene.analysis.tokenattributes.PositionIncrementAttribute;
 
 /**
@@ -45,86 +42,89 @@ import org.apache.lucene.analysis.tokenattributes.PositionIncrementAttribute;
  * 兼容Lucene 4.0版本
  */
 public final class IKTokenizer extends Tokenizer {
-	
-	//IK分词器实现
+
+	// IK分词器实现
 	private IKSegmenter _IKImplement;
-	
-	//词元文本属性
+
+	// 词元文本属性
 	private final CharTermAttribute termAtt;
-	//词元位移属性
+	// 词元位移属性
 	private final OffsetAttribute offsetAtt;
-	//词元分类属性（该属性分类参考org.wltea.analyzer.core.Lexeme中的分类常量）
+	// 词元分类属性（该属性分类参考org.wltea.analyzer.core.Lexeme中的分类常量）
 	private final TypeAttribute typeAtt;
-	//记录最后一个词元的结束位置
+	// 记录最后一个词元的结束位置
 	private int endPosition;
 
-   	private int skippedPositions;
+	private int skippedPositions;
 
-   	private PositionIncrementAttribute posIncrAtt;
+	private PositionIncrementAttribute posIncrAtt;
 
-
-    /**
+	/**
 	 * Lucene 4.0 Tokenizer适配器类构造函数
-     */
-	public IKTokenizer(Configuration configuration){
-	    super();
-	    offsetAtt = addAttribute(OffsetAttribute.class);
-	    termAtt = addAttribute(CharTermAttribute.class);
-	    typeAtt = addAttribute(TypeAttribute.class);
-        posIncrAtt = addAttribute(PositionIncrementAttribute.class);
+	 */
+	public IKTokenizer(Configuration configuration) {
+		super();
+		offsetAtt = addAttribute(OffsetAttribute.class);
+		termAtt = addAttribute(CharTermAttribute.class);
+		typeAtt = addAttribute(TypeAttribute.class);
+		posIncrAtt = addAttribute(PositionIncrementAttribute.class);
 
-        _IKImplement = new IKSegmenter(input,configuration);
+		_IKImplement = new IKSegmenter(input, configuration);
 	}
 
-	/* (non-Javadoc)
+	/*
+	 * (non-Javadoc)
+	 * 
 	 * @see org.apache.lucene.analysis.TokenStream#incrementToken()
 	 */
 	@Override
 	public boolean incrementToken() throws IOException {
-		//清除所有的词元属性
+		// 清除所有的词元属性
 		clearAttributes();
-        skippedPositions = 0;
+		skippedPositions = 0;
 
-        Lexeme nextLexeme = _IKImplement.next();
-		if(nextLexeme != null){
-            posIncrAtt.setPositionIncrement(skippedPositions +1 );
+		Lexeme nextLexeme = _IKImplement.next();
+		if (nextLexeme != null) {
+			posIncrAtt.setPositionIncrement(skippedPositions + 1);
 
-			//将Lexeme转成Attributes
-			//设置词元文本
+			// 将Lexeme转成Attributes
+			// 设置词元文本
 			termAtt.append(nextLexeme.getLexemeText());
-			//设置词元长度
+			// 设置词元长度
 			termAtt.setLength(nextLexeme.getLength());
-			//设置词元位移
-            offsetAtt.setOffset(correctOffset(nextLexeme.getBeginPosition()), correctOffset(nextLexeme.getEndPosition()));
+			// 设置词元位移
+			offsetAtt.setOffset(correctOffset(nextLexeme.getBeginPosition()),
+					correctOffset(nextLexeme.getEndPosition()));
 
-            //记录分词的最后位置
+			// 记录分词的最后位置
 			endPosition = nextLexeme.getEndPosition();
-			//记录词元分类
-			typeAtt.setType(nextLexeme.getLexemeTypeString());			
-			//返会true告知还有下个词元
+			// 记录词元分类
+			typeAtt.setType(nextLexeme.getLexemeTypeString());
+			// 返会true告知还有下个词元
 			return true;
 		}
-		//返会false告知词元输出完毕
+		// 返会false告知词元输出完毕
 		return false;
 	}
-	
+
 	/*
 	 * (non-Javadoc)
+	 * 
 	 * @see org.apache.lucene.analysis.Tokenizer#reset(java.io.Reader)
 	 */
 	@Override
 	public void reset() throws IOException {
 		super.reset();
 		_IKImplement.reset(input);
-        skippedPositions = 0;
-	}	
-	
+		skippedPositions = 0;
+	}
+
 	@Override
 	public final void end() throws IOException {
-        super.end();
-	    // set final offset
+		super.end();
+		// set final offset
 		int finalOffset = correctOffset(this.endPosition);
 		offsetAtt.setOffset(finalOffset, finalOffset);
-        posIncrAtt.setPositionIncrement(posIncrAtt.getPositionIncrement() + skippedPositions);
+		posIncrAtt.setPositionIncrement(posIncrAtt.getPositionIncrement() + skippedPositions);
 	}
 }