我正在尝试使用 apache lucene 开发一个日志查询系统。我开发了一个演示代码来索引两个文件，然后搜索查询字符串。
第一个文件包含数据maclean
第二个文件包含数据 pinto
波纹管是我用于索引的代码
fis = new FileInputStream(file);
DataInputStream in = new DataInputStream(fis);
BufferedReader br = new BufferedReader(new InputStreamReader(in));
String strLine;
Document doc = new Document();
Document doc = new Document();
doc.add(new TextField("contents", new BufferedReader(new InputStreamReader(fis, "UTF-8"))));
doc.add(new StoredField("filename", file.getCanonicalPath()));
if (indexWriter.getConfig().getOpenMode() == OpenMode.CREATE) {
System.out.println("adding " + file);
indexWriter.addDocument(doc);
} else {
System.out.println("updating " + file);
indexWriter.updateDocument(new Term("path", file.getPath()), doc);
}
如果我使用此代码，那么我会得到 proffer 结果。但是在显示中我只能显示文件名，因为我只存储了文件名。
所以我修改了代码并使用此代码存储了文件内容
FileInputStream fis = null;
if (file.isHidden() || file.isDirectory() || !file.canRead() || !file.exists()) {
return;
}
if (suffix!=null && !file.getName().endsWith(suffix)) {
return;
}
System.out.println("Indexing file " + file.getCanonicalPath());
try {
fis = new FileInputStream(file);
} catch (FileNotFoundException fnfe) {
System.out.println("File Not Found"+fnfe);
}
DataInputStream in = new DataInputStream(fis);
BufferedReader br = new BufferedReader(new InputStreamReader(in));
String strLine;
String Data="";
while ((strLine = br.readLine()) != null)
{
Data=Data+strLine;
}
Document doc = new Document();
doc.add(new TextField("contents", Data, Field.Store.YES));
doc.add(new StoredField("filename", file.getCanonicalPath()));
if (indexWriter.getConfig().getOpenMode() == OpenMode.CREATE) {
System.out.println("adding " + file);
indexWriter.addDocument(doc);
} else {
System.out.println("updating " + file);
indexWriter.updateDocument(new Term("path", file.getPath()), doc);
}
根据我的理解，我应该得到结果数为 1。它应该显示包含 maclean 的文件的文件名和内容
但相反，我得到的结果为
- - - - - - - - - - - -结果 - - - - - - - - - - - - -
共 0 个匹配文件 找到 0
我在代码中做错了什么还是对此有合理的解释？为什么第一个代码有效而第二个无效？
搜索查询代码
try
{
Directory directory = FSDirectory.open(indexDir);
IndexReader reader = DirectoryReader.open(directory);
IndexSearcher searcher = new IndexSearcher(reader);
Analyzer analyzer = new StandardAnalyzer(Version.LUCENE_41);
QueryParser parser = new QueryParser(Version.LUCENE_41, "contents", analyzer);
Query query = parser.parse(queryStr);
System.out.println("Searching for: " + query.toString("contents"));
TopDocs results = searcher.search(query, maxHits);
ScoreDoc[] hits = results.scoreDocs;
int numTotalHits = results.totalHits;
System.out.println("\n\n\n-----------------------Results--------------------------\n\n\n");
System.out.println(numTotalHits + " total matching documents");
for (int i = 0; i < numTotalHits; i++) {
int docId = hits[i].doc;
Document d = searcher.doc(docId);
System.out.println(i+":File name is: "+d.get("filename"));
System.out.println(i+":File content is: "+d.get("contents"));
}
System.out.println("Found " + numTotalHits);
}
catch(Exception e)
{
System.out.println("Exception Was caused in SimpleSearcher");
e.printStackTrace();
}