lucene5学习 - 索引基本操作（创建，查询，更新，删除，分页）

 package lucene5;

 import java.io.IOException;
 import java.nio.file.Paths;
 import java.text.SimpleDateFormat;
 import java.util.Date;
 import org.apache.lucene.analysis.standard.StandardAnalyzer;
 import org.apache.lucene.document.Document;
 import org.apache.lucene.document.Field;
 import org.apache.lucene.document.IntField;
 import org.apache.lucene.document.LongField;
 import org.apache.lucene.document.TextField;
 import org.apache.lucene.index.DirectoryReader;
 import org.apache.lucene.index.IndexReader;
 import org.apache.lucene.index.IndexWriter;
 import org.apache.lucene.index.IndexWriterConfig;
 import org.apache.lucene.index.Term;
 import org.apache.lucene.queryparser.classic.ParseException;
 import org.apache.lucene.queryparser.classic.QueryParser;
 import org.apache.lucene.search.IndexSearcher;
 import org.apache.lucene.search.Query;
 import org.apache.lucene.search.ScoreDoc;
 import org.apache.lucene.search.TopDocs;
 import org.apache.lucene.store.Directory;
 import org.apache.lucene.store.FSDirectory;
 public class Lucene5Utils {

     private static String[] ids={"1","2","3","4","5","6","7","8","9","10","11","12","13","14","15","16","17","18","19","20","21","22","23","24","25","26","27","28","29","30","31"};
     private static String[] emails={"aa@aa.org","cc@cc.org","dd@dd.org","bb@bb.org","ee@ee.org","ff@ff.org","cc@cc.org","dd@dd.org","bb@bb.org","ee@ee.org","ff@ff.org","cc@cc.org","dd@dd.org","bb@bb.org","ee@ee.org","ff@ff.org","cc@cc.org","dd@dd.org","bb@bb.org","ee@ee.org","ff@ff.org","cc@cc.org","dd@dd.org","bb@bb.org","ee@ee.org","ff@ff.org","cc@cc.org","dd@dd.org","bb@bb.org","ee@ee.org","ff@ff.org"};
     private static String[] contents={"welcome to you","hello a boy","hello a girl","how are you","goog luck","oh shit","hello a boy","hello a girl","how are you","goog luck","oh shit","hello a boy","hello a girl","how are you","goog luck","oh shit","hello a boy","hello a girl","how are you","goog luck","oh shit","hello a boy","hello a girl","how are you","goog luck","oh shit","hello a boy","hello a girl","how are you","goog luck","oh shit"};
     private static String[] names={"liwu","zhangsan","xiaoqinag","laona","dabao","lisi","zhangsan","xiaoqinag","laona","dabao","lisi","zhangsan","xiaoqinag","laona","dabao","lisi","zhangsan","xiaoqinag","laona","dabao","lisi","zhangsan","xiaoqinag","laona","dabao","lisi","zhangsan","xiaoqinag","laona","dabao","lisi"};
     private static int[] attachs={1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31};
     private static Date[] dates=null ; 

     //创建索引
     private static Directory directory = null ;
     //创建IndexWriter
     private static IndexWriter indexWriter = null ;
     //创建IndexReader
     private static IndexReader indexReader = null ;
     //创建searcher
     private static IndexSearcher search = null ;
     static {
         try {
             setDate() ;
             directory = FSDirectory.open(Paths.get("D:\\lucene\\index")) ;
             indexWriter = new IndexWriter(directory, new IndexWriterConfig(new StandardAnalyzer())) ;
             indexReader = DirectoryReader.open(directory) ;
             search = new IndexSearcher(indexReader);
         } catch (IOException e) {
             e.printStackTrace();
         }
     }

     public static void setDate() {
          SimpleDateFormat sdf=new SimpleDateFormat("yyyy-mm-kk");
          try {
              dates=new Date[ids.length];
              dates[0]=sdf.parse("2010-08-17");
              dates[1]=sdf.parse("2011-02-17");
              dates[2]=sdf.parse("2012-03-17");
              dates[3]=sdf.parse("2011-04-17");
              dates[4]=sdf.parse("2012-05-17");
              dates[5]=sdf.parse("2011-07-17");
              dates[6]=sdf.parse("2011-02-17");
              dates[7]=sdf.parse("2012-03-17");
              dates[8]=sdf.parse("2011-04-17");
              dates[9]=sdf.parse("2012-05-17");
              dates[10]=sdf.parse("2011-07-17");
              dates[11]=sdf.parse("2011-02-17");
              dates[12]=sdf.parse("2012-03-17");
              dates[13]=sdf.parse("2011-04-17");
              dates[14]=sdf.parse("2012-05-17");
              dates[15]=sdf.parse("2011-07-17");
              dates[16]=sdf.parse("2011-02-17");
              dates[17]=sdf.parse("2012-03-17");
              dates[18]=sdf.parse("2011-04-17");
              dates[19]=sdf.parse("2012-05-17");
              dates[20]=sdf.parse("2011-07-17");
              dates[21]=sdf.parse("2011-02-17");
              dates[22]=sdf.parse("2012-03-17");
              dates[23]=sdf.parse("2011-04-17");
              dates[24]=sdf.parse("2012-05-17");
              dates[25]=sdf.parse("2011-07-17");
              dates[26]=sdf.parse("2011-02-17");
              dates[27]=sdf.parse("2012-03-17");
              dates[28]=sdf.parse("2011-04-17");
              dates[29]=sdf.parse("2012-05-17");
              dates[30]=sdf.parse("2011-07-17");
           } catch (Exception e) {
              e.printStackTrace();
           }
     }
     public static void main(String[] args) {
 //        createIndex () ;
 //        delete() ;
 //        search () ;
 //        paserQuery() ;
         searchBypage02(1,2,"welcome to you");
     }

     /**
      * 创建/更新索引
      */
     public static void createIndex () {
         try {
             //清空当前所有索引
             indexWriter.deleteAll() ;
             //创建写入流
 //            reader = new java.io.BufferedReader(new InputStreamReader(new FileInputStream("D:\\lucene\\files\\产品名称-拼音.txt"),"GBK"));
             for (int i = 0 ; i<=30; i++) {
                 Document d = new Document();
                 System.out.println(ids[i]+"-"+emails[i]+"-"+contents[i]+"-"+names[i]+"-"+attachs[i]+"-"+dates[i]);
                 d.add(new Field("id",ids[i],TextField.TYPE_STORED)) ;
                 d.add(new Field("email",emails[i],TextField.TYPE_STORED)) ;
                 d.add(new Field("content",contents[i],TextField.TYPE_NOT_STORED)) ;
                 d.add(new Field("name",names[i],TextField.TYPE_STORED)) ;
                 d.add(new IntField("attach",1,IntField.TYPE_STORED)) ;
                 d.add(new LongField("date",dates[i].getTime(),LongField.TYPE_STORED)) ;
                 indexWriter.addDocument(d) ;
             }
         } catch (IOException e) {
             e.printStackTrace();
         } finally {
             try {
                 //在这里writer必须要关掉或者commit。不然，会写入不进去数据
                 indexWriter.commit() ;
 //                indexWriter.close() ;
             } catch (IOException e) {
                 e.printStackTrace();
             }
         }
     }

     //简单的查询
     public static void search (){
         System.out.println(indexReader.maxDoc()); //输出所有的DOC数
         System.out.println(indexReader.numDocs()); //输出可用的DOC数
         System.out.println(indexReader.numDeletedDocs()); //输出删除的DOC数
         try {
             //获取搜索域--shouzimu
             QueryParser parser = new QueryParser("email",new StandardAnalyzer()) ;
             //设置查询条件
             Query query = parser.parse("@dd.org~");
             //设置查找结果 -最多为10条
             TopDocs tocs =  search.search(query,10) ;
             //遍历查询结果
             ScoreDoc[] docs = tocs.scoreDocs ;
             for (ScoreDoc sd : docs) {
                 Document doc = search.doc(sd.doc) ;
                 //这里的content输出为null。因为我们没有保存哦~
                 System.out.println(doc.get("id")+":" + doc.get("email") + "-" + doc.get("content")+"-" + doc.get("name")+"-" + doc.get("attach")+"-" + doc.get("date"));
             }
         } catch (org.apache.lucene.queryparser.classic.ParseException e) {
             e.printStackTrace();
         } catch (IOException e) {
             e.printStackTrace();
         }
     }

     //删除索引

     public static void delete () {
         try {
             //删除，放置在回收站中，可恢复
             indexWriter.deleteDocuments(new Term("shouzimu","xxxxlxw")) ;
             //删除，不可恢复
             indexWriter.forceMergeDeletes() ;
             indexWriter.commit() ;
         } catch (IOException e) {
             e.printStackTrace();
         }
     }

     //5中的方法 暂时不会啊= =、
     public static void undelete () {
     }

     //详解ParserQuery
     public static void paserQuery () {
         //这里我们定义一个基于标准分词器的Query;搜索域默认为content
         QueryParser parser = new QueryParser("content",new StandardAnalyzer()) ;
 //        parser.setAllowLeadingWildcard(true) ;
         try {
             //在默认域中查找 有you的
             Query query = parser.parse("you");
             //在默认域中查找有 boy 或者girl 的
             query = parser.parse("boy girl");
             query = parser.parse("boy OR girl");
             //在name域中查号 name 为xiaoqinag的
             query = parser.parse("name:xiaoqinag");
             query = parser.parse("name : xiaoqinag");
             //查找邮箱结尾为@dd.org的   通配符查询不能用？！！！  待解决
             query = parser.parse("email:a?@aa.org");  //会报错 提示通配符不能放在首位
             //在默认域中查找 有how 且有 you的
             query = parser.parse("how AND you");
             //在默认域中查找 有hello 但是没有 girl的   千万要注意空格！
             query = parser.parse("-girl +hello");
             //完全匹配hello a boy
             query = parser.parse("\"hello a girl\"");
             //显示id 2-4 的闭区间 TO大写
             query = parser.parse("id:[2 TO 4]");
             //显示id 2-4 的开区间 TO大写
             query = parser.parse("id:{2 TO 4}");
             //显示id hello 和 boy 之间有小于1的
             query = parser.parse("\"hello boy\"~1");
             //模糊查询
             query = parser.parse("name:xiaoqiang~");
             query = parser.parse("attach:{2 TO 4}");
             TopDocs tdocs = search.search(query, 10) ;
             ScoreDoc[] sdoc = tdocs.scoreDocs;
             for (ScoreDoc sd : sdoc) {
                 Document doc = search.doc(sd.doc) ;
                 System.out.println(doc.get("id")+":" + doc.get("email") + "-" + doc.get("content")+"-" + doc.get("name")+"-" + doc.get("attach")+"-" + doc.get("date"));
             }
         } catch (ParseException e) {
             e.printStackTrace();
         } catch (IOException e) {
             e.printStackTrace();
         }
     }

     //分页查询一
     public static void searchBypage01 (int page,int pageSize,String str) {
         int start = (page-1) * pageSize ;
         int end = start + pageSize ;
         QueryParser parser = new QueryParser("content",new StandardAnalyzer()) ;
         try {
             Query query = parser.parse(str) ;
             TopDocs tdos = search.search(query, 100) ;
             ScoreDoc[] sds = tdos.scoreDocs ;
             for (int i = start ;i <end;i++ ) {
                 Document doc = search.doc(sds[i].doc) ;
                 System.out.println(doc.get("id")+":" + doc.get("email") + "-" + doc.get("content")+"-" + doc.get("name")+"-" + doc.get("attach")+"-" + doc.get("date"));
             }
         } catch (ParseException e) {
             e.printStackTrace();
         } catch (IOException e) {
             e.printStackTrace();
         }
     }

     //分页查询二
         public static void searchBypage02 (int page,int pageSize,String str) {
             int start = (page-1) * pageSize ;
 //            int end = start + pageSize ;
             QueryParser parser = new QueryParser("content",new StandardAnalyzer()) ;
             try {
                 Query query = parser.parse(str) ;
                 TopDocs tdos = search.search(query, 100) ;
                 ScoreDoc[] sds = tdos.scoreDocs ;
                 tdos = search.searchAfter(sds[start], query, pageSize) ;
                 sds = tdos.scoreDocs ;
                 for (ScoreDoc sd : sds) {
                     Document doc = search.doc(sd.doc) ;
                     System.out.println(doc.get("id")+":" + doc.get("email") + "-" + doc.get("content")+"-" + doc.get("name")+"-" + doc.get("attach")+"-" + doc.get("date"));
                 }
             } catch (ParseException e) {
                 e.printStackTrace();
             } catch (IOException e) {
                 e.printStackTrace();
             }
         }

 }