lucene(全文搜索)

lucene(全文搜索)_删除索引

索引的删除操作：

 1 /**
 2      * 索引的删除
 3      */
 4     public void delete() {
 5         IndexWriter writer = null;
 6 
 7         try {
 8             writer = new IndexWriter(directory, new IndexWriterConfig(
 9                     Version.LUCENE_35, new StandardAnalyzer(Version.LUCENE_35)));
10             // 参数是一个选项，可以是一个query，也可以是一个term，term是一个精确查找的值
11             writer.deleteDocuments(new Term("id", "1"));
12         } catch (CorruptIndexException e) {
13             e.printStackTrace();
14         } catch (LockObtainFailedException e) {
15             e.printStackTrace();
16         } catch (IOException e) {
17             e.printStackTrace();
18         } finally {
19             if (writer != null) {
20                 try {
21                     writer.close();
22                 } catch (CorruptIndexException e) {
23                     e.printStackTrace();
24                 } catch (IOException e) {
25                     e.printStackTrace();
26                 }
27             }
28         }
29     }

测试代码：

1 @Test
2     public void testDelete(){
3         LuceneUtil util = new LuceneUtil();
4         System.out.println("删除前 =======");
5         util.query();
6         util.delete();
7         System.out.println("删除后 =======");
8         util.query();
9     }

运行结果：

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