Jcseg分词器的实现详解

1.之前的项目一直都是用的ik分词器，但是最近的一个项目项目大佬说ik好像很长时间都没更新，版本太老旧，故而用了新的jcseg的分词器，于是也上网找了一些资料，学习了一下如何使用jcseg分词器。

2.http://www.docin.com/p-782941386.html这个是网上找到的Jcseg中文分词器开发说明文档

3.具体实现

在pom文件里面添加相关架包

<dependency>
<groupId>org.lionsoul</groupId>
<artifactId>jcseg-core</artifactId>
<version>1.9.2</version>
</dependency>

jcseg.properties 注意的是那个词典（lexicon）的目录，没有的可以去官网上下载，或者联系我QQ：854916776

# jcseg properties file.
# bug report chenxin <[email protected]>

# Jcseg function
#maximum match length. (5-7)
jcseg.maxlen=5

#recognized the chinese name.(1 to open and 0 to close it)
jcseg.icnname=1

#maximum chinese word number of english chinese mixed word.
jcseg.mixcnlen=2

#maximum length for pair punctuation text.
jcseg.pptmaxlen=15

#maximum length for chinese last name andron.
jcseg.cnmaxlnadron=1

#Wether to clear the stopwords.(set 1 to clear stopwords and 0 to close it)
jcseg.clearstopword=0

#Wether to convert the chinese numeric to arabic number. (set to 1 open it and 0 to close it)
# like '\u4E09\u4E07' to 30000.
jcseg.cnnumtoarabic=1

#Wether to convert the chinese fraction to arabic fraction.
jcseg.cnfratoarabic=1

#Wether to keep the unrecognized word. (set 1 to keep unrecognized word and 0 to clear it)
jcseg.keepunregword=1

#Wether to start the secondary segmentation for the complex english words.
jcseg.ensencondseg = 1

#min length of the secondary simple token. (better larger than 1)
jcseg.stokenminlen = 2

#thrshold for chinese name recognize.
# better not change it before you know what you are doing.
jcseg.nsthreshold=1000000

#The punctuations that will be keep in an token.(Not the end of the token).
jcseg.keeppunctuations=@%.&+
####about the lexicon
#prefix of lexicon file.
lexicon.prefix=lex

#suffix of lexicon file.
lexicon.suffix=lex

#abusolte path of the lexicon file.
#Multiple path support from jcseg 1.9.2, use ';' to split different path.
#example: lexicon.path = /home/chenxin/lex1;/home/chenxin/lex2 (Linux)
#  : lexicon.path = D:/jcseg/lexicon/1;D:/jcseg/lexicon/2 (WinNT)
#lexicon.path=C:/Users/admin/Downloads/jcseg-1.9.2/lexicon
lexicon.path=D:/workspace/lexicon

#Wether to load the modified lexicon file auto.
lexicon.autoload=0

#Poll time for auto load. (seconds)
lexicon.polltime=120
####lexicon load
#Wether to load the part of speech of the entry.
jcseg.loadpos=1

#Wether to load the pinyin of the entry.
jcseg.loadpinyin=0

#Wether to load the synoyms words of the entry.
jcseg.loadsyn=1

JcsegTools.java的代码

package com.iflytek.jcseg;

import java.io.IOException;
import java.io.Serializable;
import java.io.StringReader;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import org.lionsoul.jcseg.core.ADictionary;
import org.lionsoul.jcseg.core.DictionaryFactory;
import org.lionsoul.jcseg.core.ISegment;
import org.lionsoul.jcseg.core.IWord;
import org.lionsoul.jcseg.core.JcsegException;
import org.lionsoul.jcseg.core.JcsegTaskConfig;
import org.lionsoul.jcseg.core.SegmentFactory;

public class JcsegTools implements Serializable {

 private static final long serialVersionUID = 1L;
 private static JcsegTaskConfig config;

 ISegment seg = null;
 private boolean inited;

 synchronized private void init() throws JcsegException {
  JcsegTaskConfig config = new JcsegTaskConfig();
  ADictionary dic = DictionaryFactory.createDefaultDictionary(config);

  for (String s : config.getLexiconPath()) {
   System.out.println("->" + s);
  }
  seg = SegmentFactory.createJcseg(JcsegTaskConfig.COMPLEX_MODE,
    new Object[] { config, dic });
  inited = true;
 }

 public List<String> segment(String fullText) throws IOException,
   JcsegException {
  if (!inited) {
   init();
  }
  IWord word = null;
  seg.reset(new StringReader(fullText));
  List<String> ret = new ArrayList<String>();
  Set<String> ml = new HashSet<String>();
  while ((word = seg.next()) != null) {
   if (word.getLength() < 2) {
    continue; // 去掉长度小于2的词
   }
   ml.add(word.getValue());
  }
  ret.addAll(ml);
  return ret;
 }

 public static void main(String[] args) throws JcsegException, IOException {
  String str = "3月22日，百度首席科学家吴恩达在多个社交平台发布公开信，宣布自己将从百度离职，对于未来的去向，他在推特上表示：未来将会推动大公司使用人工智能，并创造丰富的创业机会及进一步的人工智能研究。对于吴恩达的离职，百度官方也给予了祝福，并感谢其在百度任职期间做出的贡献。巧合的是，百度股价曾在2月的同一天大幅下跌，市值蒸发超200亿人民币，联想到今天的离职事件，个中缘由耐人寻味。";
//  List<String> list = JcsegTools.analyze(str);
//  for (String word : list) {
//   System.out.println(word);
//  }
//  System.out.println(list.size());
  JcsegTools demo = new JcsegTools();
  try {
   List<String> strings=demo.segment(str);
   for(int i=0;i<strings.size();i++){
    System.out.println(strings.get(i));
   }
  } catch (IOException e) {
   e.printStackTrace();
  }
 }
}

结果截图: