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
------------
时间： 2024-08-23 23:11:53