solr4的solr-ik插件 http://www.chepoo.com/solr4-plugin-solr-ik.html
solr4中添加中文分词ik。
1.首先从https://code.google.com/p/ik-analyzer/下载IK Analyzer 2012FF_hf1_source.rar打包成jar包，然后放入到solr程序中WEB-INF/lib/下。
2.这样做有一个很不方便的地方就是，每次我们要修改词库，我们都要重新打包，很不方便。所以我就修改了其中的部分源码。在词库更新时，直接更新WEB-INF/classes/ik目录下的文件就成。主要修改的源码为Dictionary.java.
public class Dictionary {
/* * 词典单子实例 */
private static Dictionary singleton;
/* * 主词典对象 */
private DictSegment _MainDict;
/* * 停止词词典 */
private DictSegment _StopWordDict;
/* * 量词词典 */
private DictSegment _QuantifierDict;
/** * 配置对象 */
private Configuration cfg;
private Dictionary(Configuration cfg){
this.cfg = cfg;
this.loadMainDict();
this.loadStopWordDict();
this.loadQuantifierDict();
}
/** * 词典初始化 * 由于IK Analyzer的词典采用Dictionary类的静态方法进行词典初始化 * 只有当Dictionary类被实际调用时，才会开始载入词典， * 这将延长首次分词操作的时间 * 该方法提供了一个在应用加载阶段就初始化字典的手段 * @return Dictionary */
public static Dictionary initial(Configuration cfg){
if(singleton == null){
synchronized(Dictionary.class){
if(singleton == null){
singleton = new Dictionary(cfg);
return singleton;
}
}
}
return singleton;
}
/** * 获取词典单子实例 * @return Dictionary 单例对象 */
public static Dictionary getSingleton(){
if(singleton == null){
throw new IllegalStateException("词典尚未初始化，请先调用initial方法");
}
return singleton;
}
/** * 批量加载新词条 * @param words Collection<String>词条列表 */
public void addWords(Collection<String> words){
if(words != null){
for(String word : words){
if (word != null) {
//批量加载词条到主内存词典中
singleton._MainDict.fillSegment(word.trim().toLowerCase().toCharArray());
}
}
}
}
/** * 批量移除（屏蔽）词条 * @param words */
public void disableWords(Collection<String> words){
if(words != null){
for(String word : words){
if (word != null) {
//批量屏蔽词条
singleton._MainDict.disableSegment(word.trim().toLowerCase().toCharArray());
}
}
}
}
/** * 检索匹配主词典 * @param charArray * @return Hit 匹配结果描述 */
public Hit matchInMainDict(char[] charArray){
return singleton._MainDict.match(charArray);
}
/** * 检索匹配主词典 * @param charArray * @param begin * @param length * @return Hit 匹配结果描述 */
public Hit matchInMainDict(char[] charArray , int begin, int length){
return singleton._MainDict.match(charArray, begin, length);
}
/** * 检索匹配量词词典 * @param charArray * @param begin * @param length * @return Hit 匹配结果描述 */
public Hit matchInQuantifierDict(char[] charArray , int begin, int length){
return singleton._QuantifierDict.match(charArray, begin, length);
}
/** * 从已匹配的Hit中直接取出DictSegment，继续向下匹配 * @param charArray * @param currentIndex * @param matchedHit * @return Hit */
public Hit matchWithHit(char[] charArray , int currentIndex , Hit matchedHit){
DictSegment ds = matchedHit.getMatchedDictSegment();
return ds.match(charArray, currentIndex, 1 , matchedHit);
}
/** * 判断是否是停止词 * @param charArray * @param begin * @param length * @return boolean */
public boolean isStopWord(char[] charArray , int begin, int length){
return singleton._StopWordDict.match(charArray, begin, length).isMatch();
}
/** * 加载主词典及扩展词典 */
private void loadMainDict(){
//建立一个主词典实例
_MainDict = new DictSegment((char)0);
//读取主词典文件
InputStream is = this.getClass().getClassLoader().getResourceAsStream(cfg.getMainDictionary());
if(is == null){
throw new RuntimeException("Main Dictionary not found!!!");
}
try {
BufferedReader br = new BufferedReader(new InputStreamReader(is , "UTF-8"), 512);
String theWord = null;
do {
theWord = br.readLine();
if (theWord != null && !"".equals(theWord.trim())) {
_MainDict.fillSegment(theWord.trim().toLowerCase().toCharArray());
}
} while (theWord != null);
} catch (IOException ioe) {
System.err.println("Main Dictionary loading exception.");
ioe.printStackTrace();
}finally{
try {
if(is != null){
is.close();
is = null;
}
} catch (IOException e) {
e.printStackTrace();
}
}
//加载扩展词典
this.loadExtDict();
}
/** * 加载用户配置的扩展词典到主词库表 */
private void loadExtDict(){
//加载扩展词典配置
List<String> extDictFiles = cfg.getExtDictionarys();
if(extDictFiles != null){
InputStream is = null;
for(String extDictName : extDictFiles){
//读取扩展词典文件
System.out.println("加载扩展词典：" + extDictName);
is = this.getClass().getClassLoader().getResourceAsStream(extDictName);
//如果找不到扩展的字典，则忽略
if(is == null){
continue;
}
try {
BufferedReader br = new BufferedReader(new InputStreamReader(is , "UTF-8"), 512);
String theWord = null;
do {
theWord = br.readLine();
if (theWord != null && !"".equals(theWord.trim())) {
//加载扩展词典数据到主内存词典中
//System.out.println(theWord);
_MainDict.fillSegment(theWord.trim().toLowerCase().toCharArray());
}
} while (theWord != null);
} catch (IOException ioe) {
System.err.println("Extension Dictionary loading exception.");
ioe.printStackTrace();
}finally{
try {
if(is != null){
is.close();
is = null;
}
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
}
/** * 加载用户扩展的停止词词典 */
private void loadStopWordDict(){
//建立一个主词典实例
_StopWordDict = new DictSegment((char)0);
//加载扩展停止词典
List<String> extStopWordDictFiles = cfg.getExtStopWordDictionarys();
if(extStopWordDictFiles != null){
InputStream is = null;
for(String extStopWordDictName : extStopWordDictFiles){
System.out.println("加载扩展停止词典：" + extStopWordDictName);
//读取扩展词典文件
is = this.getClass().getClassLoader().getResourceAsStream(extStopWordDictName);
//如果找不到扩展的字典，则忽略
if(is == null){
continue;
}
try {
BufferedReader br = new BufferedReader(new InputStreamReader(is , "UTF-8"), 512);
String theWord = null;
do {
theWord = br.readLine();
if (theWord != null && !"".equals(theWord.trim())) {
//System.out.println(theWord);
//加载扩展停止词典数据到内存中
_StopWordDict.fillSegment(theWord.trim().toLowerCase().toCharArray());
}
} while (theWord != null);
} catch (IOException ioe) {
System.err.println("Extension Stop word Dictionary loading exception.");
ioe.printStackTrace();
}finally{
try {
if(is != null){
is.close();
is = null;
}
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
}
/** * 加载量词词典 */
private void loadQuantifierDict(){
//建立一个量词典实例
_QuantifierDict = new DictSegment((char)0);
//读取量词词典文件
InputStream is = this.getClass().getClassLoader().getResourceAsStream(cfg.getQuantifierDicionary());
if(is == null){
throw new RuntimeException("Quantifier Dictionary not found!!!");
}
try {
BufferedReader br = new BufferedReader(new InputStreamReader(is , "UTF-8"), 512);
String theWord = null;
do {
theWord = br.readLine();
if (theWord != null && !"".equals(theWord.trim())) {
_QuantifierDict.fillSegment(theWord.trim().toLowerCase().toCharArray());
}
} while (theWord != null);
} catch (IOException ioe) {
System.err.println("Quantifier Dictionary loading exception.");
ioe.printStackTrace();
}finally{
try {
if(is != null){
is.close();
is = null;
}
} catch (IOException e) {
e.printStackTrace();
}
}
}
} |
3.相关程序已经放入到了https://github.com/awnuxkjy/solr-ik
4.使用方法。配置solrhome下的collection1\conf\schema.xml
<fieldType name="ik_text" class="solr.TextField">
<analyzer class="org.wltea.analyzer.lucene.IKAnalyzer" useSmart="true"/>
</fieldType> |
在你的solr程序中/classes文件中新建ik目录，拷贝main2012.dic，ext.dic,IKAnalyzer.cfg.xml,quantifier.dic, stopword.dic等文件。
将ik源码打成jar包。放入到WEB-INF/lib/下
本文固定链接: http://www.chepoo.com/solr4-plugin-solr-ik.html | IT技术精华网
