lucene查询索引之Query子类查询——（七）

0.文档名字：（根据名字索引查询文档）

 

 

 

1. 提取获取InsexSearch 与 处理结果的公共代码

 

//IndexReader  IndexSearcher
    public IndexSearcher getIndexSearcher() throws Exception{
        // 第一步：创建一个Directory对象，也就是索引库存放的位置。
        Directory directory = FSDirectory.open(new File("D:\\temp\\index"));// 磁盘
        // 第二步：创建一个indexReader对象，需要指定Directory对象。
        IndexReader indexReader = DirectoryReader.open(directory);
        // 第三步：创建一个indexsearcher对象，需要指定IndexReader对象
        return new IndexSearcher(indexReader);
    }
    //执行查询的结果
    public void printResult(IndexSearcher indexSearcher,Query query)throws Exception{
        // 第五步：执行查询。
        TopDocs topDocs = indexSearcher.search(query, 10);
        // 第六步：返回查询结果。遍历查询结果并输出。
        ScoreDoc[] scoreDocs = topDocs.scoreDocs;
        for (ScoreDoc scoreDoc : scoreDocs) {
            int doc = scoreDoc.doc;
            Document document = indexSearcher.doc(doc);
            // 文件名称
            String fileName = document.get("fileName");
            System.out.println(fileName);
            // 文件内容
            String fileContent = document.get("fileContent");
            System.out.println(fileContent);
            // 文件大小
            String fileSize = document.get("fileSize");
            System.out.println(fileSize);
            // 文件路径
            String filePath = document.get("filePath");
            System.out.println(filePath);
            System.out.println("------------");
        }
    }

 

2.精准查询:(入门程序的查询索引)

　　　查询名字索引中含有Java的文件(解析语法:    fileName:java)

fileName:java
// 精准查询
    @Test
    public void testTermQuery() throws Exception {
        IndexSearcher indexSearcher = getIndexSearcher();
        // 第四步：创建一个TermQuery对象，指定查询的域和查询的关键词。
        Query query = new TermQuery(new Term("fileName", "java"));
        printResult(indexSearcher, query);
        // 关闭资源
        indexSearcher.getIndexReader().close();
    }

 

结果:

java struts - .txt
 think smiling is as important as sunshine. Smiling is like sunshine because it can make people happy and have a good day. If you aren��t happy, you can smile, and then you will feel happy. Someone may say, ��But I don��t feel happy.�� Then I would say, ��Please smile as you do when you are happy or play wit
309
E:\lucene&solr\searchfiles\java struts - .txt
------------
java struts.txt
 think smiling is as important as sunshine. Smiling is like sunshine because it can make people happy and have a good day. If you aren��t happy, you can smile, and then you will feel happy. Someone may say, ��But I don��t feel happy.�� Then I would say, ��Please smile as you do when you are happy or play wit
309
E:\lucene&solr\searchfiles\java struts.txt
------------
java 基础.txt
 think smiling is as important as sunshine. Smiling is like sunshine because it can make people happy and have a good day. If you aren��t happy, you can smile, and then you will feel happy. Someone may say, ��But I don��t feel happy.�� Then I would say, ��Please smile as you do when you are happy or play wit
309
E:\lucene&solr\searchfiles\java 基础.txt
------------
java高级.txt
����java�߼��̳̣���������������
32
E:\lucene&solr\searchfiles\java高级.txt
------------
java struts  springmvc.txt
 think smiling is as important as sunshine. Smiling is like sunshine because it can make people happy and have a good day. If you aren��t happy, you can smile, and then you will feel happy. Someone may say, ��But I don��t feel happy.�� Then I would say, ��Please smile as you do when you are happy or play wit
309
E:\lucene&solr\searchfiles\java struts  springmvc.txt
------------
java struts spring.txt
 think smiling is as important as sunshine. Smiling is like sunshine because it can make people happy and have a good day. If you aren��t happy, you can smile, and then you will feel happy. Someone may say, ��But I don��t feel happy.�� Then I would say, ��Please smile as you do when you are happy or play wit
309
E:\lucene&solr\searchfiles\java struts spring.txt
------------

 

 

 3.查询所有

 　　解析语法  *:*

 

// 查询所有
    @Test
    public void testMatchAllDocsQuery() throws Exception {
        IndexSearcher indexSearcher = getIndexSearcher();
        Query query = new MatchAllDocsQuery();
        System.out.println(query);
        printResult(indexSearcher, query);
        // 关闭资源
        indexSearcher.getIndexReader().close();
    }

 结果:

*:*
1javaweb .txt
this is javaweb dsbadfsabjkfsdf njdfndsj njaj spring 
53
E:\lucene&solr\searchfiles\1javaweb .txt
------------
2.javeSpring .txt
my family, because I have a happy family. My father is an English teacher. His name is Jacky. He is thirty-eight. He likes playing basketball. What��s my mother job? Is she a teacher? Yes, you��re right! My mother is very kind and nice, she is thirty-seven. My mother is always laborious work. I love my parents! On Saturday and Sunday, I often go to the library and play the piano, My father go to play basketball. Sometimes, we watch TV and listen to music at home. I love my family. Because I��m very happy to live 
518
E:\lucene&solr\searchfiles\2.javeSpring .txt
------------
2.springMVC.txt
is is my room. Near the window there is a desk. I often do my homework at it. You can see some books, some flowers in a vase, a ruler and a pen. On the wall near the desk there is a picture of a cat. There is a clock above the end of my bed. I usually put my shoe under my bed. Of course
287
E:\lucene&solr\searchfiles\2.springMVC.txt
------------
computer.txt
��Computers are changing our life. You can do a lot of things with a computer. Such as, you can use a computer to write articles, watch video CDs, play games and do office work. But the most important use of a computer is to join the Internet.We don��t need to leave home to borrow books from a library or to do shopping in a supermarke
336
E:\lucene&solr\searchfiles\computer.txt
------------
java struts  springmvc.txt
 think smiling is as important as sunshine. Smiling is like sunshine because it can make people happy and have a good day. If you aren��t happy, you can smile, and then you will feel happy. Someone may say, ��But I don��t feel happy.�� Then I would say, ��Please smile as you do when you are happy or play wit
309
E:\lucene&solr\searchfiles\java struts  springmvc.txt
------------
java struts - .txt
 think smiling is as important as sunshine. Smiling is like sunshine because it can make people happy and have a good day. If you aren��t happy, you can smile, and then you will feel happy. Someone may say, ��But I don��t feel happy.�� Then I would say, ��Please smile as you do when you are happy or play wit
309
E:\lucene&solr\searchfiles\java struts - .txt
------------
java struts spring.txt
 think smiling is as important as sunshine. Smiling is like sunshine because it can make people happy and have a good day. If you aren��t happy, you can smile, and then you will feel happy. Someone may say, ��But I don��t feel happy.�� Then I would say, ��Please smile as you do when you are happy or play wit
309
E:\lucene&solr\searchfiles\java struts spring.txt
------------
java struts.txt
 think smiling is as important as sunshine. Smiling is like sunshine because it can make people happy and have a good day. If you aren��t happy, you can smile, and then you will feel happy. Someone may say, ��But I don��t feel happy.�� Then I would say, ��Please smile as you do when you are happy or play wit
309
E:\lucene&solr\searchfiles\java struts.txt
------------
java 基础.txt
 think smiling is as important as sunshine. Smiling is like sunshine because it can make people happy and have a good day. If you aren��t happy, you can smile, and then you will feel happy. Someone may say, ��But I don��t feel happy.�� Then I would say, ��Please smile as you do when you are happy or play wit
309
E:\lucene&solr\searchfiles\java 基础.txt
------------
java高级.txt
����java�߼��̳̣���������������
32
E:\lucene&solr\searchfiles\java高级.txt
------------

 

 

4.根据范围值查询

　　解析语法:    fileSize:{47 TO 200]

　　NumericRangeQuery.newLongRange("fileSize", 47L, 200L, false, true);

　　根据范围查询，第一个是域名字，第二个是最小值，第三个参数是最大值，第四个参数是是否包含最小值，第五个参数是是否包含最大值。

　　Long型后面要加L，不加L默认是int，int转为long是安全的，所以会自动转，能编译通过
　　浮点数不加F默认是double类型，double转float可能损失精度，因为不会自动转，编译是通不过的

 

// 根据数值范围查询
    @Test
    public void testNumericRangeQuery() throws Exception {
        IndexSearcher indexSearcher = getIndexSearcher();

        Query query = NumericRangeQuery.newLongRange("fileSize", 47L, 200L, false, true);
        System.out.println(query);
        printResult(indexSearcher, query);
        // 关闭资源
        indexSearcher.getIndexReader().close();
    }

结果:

fileSize:{47 TO 200]
1javaweb .txt
this is javaweb dsbadfsabjkfsdf njdfndsj njaj spring 
53
E:\lucene&solr\searchfiles\1javaweb .txt
------------

 

 

5.组合条件查询(重点)

 

 

 

(1)查找名字中java必有，struts可有可无的

　　解析语法:     +fileName:java fileName:struts

// 可以组合查询条件
    @Test
    public void testBooleanQuery() throws Exception {
        IndexSearcher indexSearcher = getIndexSearcher();

        BooleanQuery booleanQuery = new BooleanQuery();

        Query query1 = new TermQuery(new Term("fileName", "java"));
        Query query2 = new TermQuery(new Term("fileName", "struts"));
        // select * from user where id =1 or name = 'safdsa'
        booleanQuery.add(query1, Occur.MUST);
        booleanQuery.add(query2, Occur.SHOULD);
        System.out.println(booleanQuery);
        printResult(indexSearcher, booleanQuery);
        // 关闭资源
        indexSearcher.getIndexReader().close();
    }

 

 结果:

+fileName:java fileName:struts
java struts - .txt
 think smiling is as important as sunshine. Smiling is like sunshine because it can make people happy and have a good day. If you aren��t happy, you can smile, and then you will feel happy. Someone may say, ��But I don��t feel happy.�� Then I would say, ��Please smile as you do when you are happy or play wit
309
E:\lucene&solr\searchfiles\java struts - .txt
------------
java struts.txt
 think smiling is as important as sunshine. Smiling is like sunshine because it can make people happy and have a good day. If you aren��t happy, you can smile, and then you will feel happy. Someone may say, ��But I don��t feel happy.�� Then I would say, ��Please smile as you do when you are happy or play wit
309
E:\lucene&solr\searchfiles\java struts.txt
------------
java struts  springmvc.txt
 think smiling is as important as sunshine. Smiling is like sunshine because it can make people happy and have a good day. If you aren��t happy, you can smile, and then you will feel happy. Someone may say, ��But I don��t feel happy.�� Then I would say, ��Please smile as you do when you are happy or play wit
309
E:\lucene&solr\searchfiles\java struts  springmvc.txt
------------
java struts spring.txt
 think smiling is as important as sunshine. Smiling is like sunshine because it can make people happy and have a good day. If you aren��t happy, you can smile, and then you will feel happy. Someone may say, ��But I don��t feel happy.�� Then I would say, ��Please smile as you do when you are happy or play wit
309
E:\lucene&solr\searchfiles\java struts spring.txt
------------
java 基础.txt
 think smiling is as important as sunshine. Smiling is like sunshine because it can make people happy and have a good day. If you aren��t happy, you can smile, and then you will feel happy. Someone may say, ��But I don��t feel happy.�� Then I would say, ��Please smile as you do when you are happy or play wit
309
E:\lucene&solr\searchfiles\java 基础.txt
------------
java高级.txt
����java�߼��̳̣���������������
32
E:\lucene&solr\searchfiles\java高级.txt
------------

 

 

(2) 查找java与struts都必须有的

　　解析语法　　+fileName:java +fileName:struts

@Test
    public void testBooleanQuery() throws Exception {
        IndexSearcher indexSearcher = getIndexSearcher();

        BooleanQuery booleanQuery = new BooleanQuery();

        Query query1 = new TermQuery(new Term("fileName", "java"));
        Query query2 = new TermQuery(new Term("fileName", "struts"));
        // select * from user where id =1 or name = 'safdsa'
        booleanQuery.add(query1, Occur.MUST);
        booleanQuery.add(query2, Occur.MUST);
        System.out.println(booleanQuery);
        printResult(indexSearcher, booleanQuery);
        // 关闭资源
        indexSearcher.getIndexReader().close();
    }

 

结果;(下面的+表示查询条件必须有要求的分词，可有可无不带+也不带-)

+fileName:java +fileName:struts
java struts - .txt
 think smiling is as important as sunshine. Smiling is like sunshine because it can make people happy and have a good day. If you aren��t happy, you can smile, and then you will feel happy. Someone may say, ��But I don��t feel happy.�� Then I would say, ��Please smile as you do when you are happy or play wit
309
E:\lucene&solr\searchfiles\java struts - .txt
------------
java struts.txt
 think smiling is as important as sunshine. Smiling is like sunshine because it can make people happy and have a good day. If you aren��t happy, you can smile, and then you will feel happy. Someone may say, ��But I don��t feel happy.�� Then I would say, ��Please smile as you do when you are happy or play wit
309
E:\lucene&solr\searchfiles\java struts.txt
------------
java struts  springmvc.txt
 think smiling is as important as sunshine. Smiling is like sunshine because it can make people happy and have a good day. If you aren��t happy, you can smile, and then you will feel happy. Someone may say, ��But I don��t feel happy.�� Then I would say, ��Please smile as you do when you are happy or play wit
309
E:\lucene&solr\searchfiles\java struts  springmvc.txt
------------
java struts spring.txt
 think smiling is as important as sunshine. Smiling is like sunshine because it can make people happy and have a good day. If you aren��t happy, you can smile, and then you will feel happy. Someone may say, ��But I don��t feel happy.�� Then I would say, ��Please smile as you do when you are happy or play wit
309
E:\lucene&solr\searchfiles\java struts spring.txt
------------

 

 

(3)查询必有java，必须没有struts的文档

　　解析语法　　+fileName:java -fileName:struts

@Test
    public void testBooleanQuery() throws Exception {
        IndexSearcher indexSearcher = getIndexSearcher();

        BooleanQuery booleanQuery = new BooleanQuery();

        Query query1 = new TermQuery(new Term("fileName", "java"));
        Query query2 = new TermQuery(new Term("fileName", "struts"));
        // select * from user where id =1 or name = 'safdsa'
        booleanQuery.add(query1, Occur.MUST);
        booleanQuery.add(query2, Occur.MUST_NOT);
        System.out.println(booleanQuery);
        printResult(indexSearcher, booleanQuery);
        // 关闭资源
        indexSearcher.getIndexReader().close();
    }

 

 

结果:(-表示查询条件中必须没有包含的分词)

+fileName:java -fileName:struts
java 基础.txt
 think smiling is as important as sunshine. Smiling is like sunshine because it can make people happy and have a good day. If you aren��t happy, you can smile, and then you will feel happy. Someone may say, ��But I don��t feel happy.�� Then I would say, ��Please smile as you do when you are happy or play wit
309
E:\lucene&solr\searchfiles\java 基础.txt
------------
java高级.txt
����java�߼��̳̣���������������
32
E:\lucene&solr\searchfiles\java高级.txt
------------

 

 

(4)查询必有java，必须没有struts的文档且大小必须在4400字节的文档

　　解析语法 　　+fileName:java -fileName:struts +fileSize:{47 TO 400]

@Test
    public void testBooleanQuery() throws Exception {
        IndexSearcher indexSearcher = getIndexSearcher();

        BooleanQuery booleanQuery = new BooleanQuery();

        Query query1 = new TermQuery(new Term("fileName", "java"));
        Query query2 = new TermQuery(new Term("fileName", "struts"));
        Query query3 = NumericRangeQuery.newLongRange("fileSize", 47L, 400L, false, true);
        
        // select * from user where id =1 or name = 'safdsa'
        booleanQuery.add(query1, Occur.MUST);
        booleanQuery.add(query2, Occur.MUST_NOT);
        booleanQuery.add(query3, Occur.MUST);
        System.out.println(booleanQuery);
        printResult(indexSearcher, booleanQuery);
        // 关闭资源
        indexSearcher.getIndexReader().close();
    }

 

结果:

+fileName:java -fileName:struts +fileSize:{47 TO 400]
java 基础.txt
 think smiling is as important as sunshine. Smiling is like sunshine because it can make people happy and have a good day. If you aren��t happy, you can smile, and then you will feel happy. Someone may say, ��But I don��t feel happy.�� Then I would say, ��Please smile as you do when you are happy or play wit
309
E:\lucene&solr\searchfiles\java 基础.txt
------------