2019独角兽企业重金招聘Python工程师标准>>> 
public void searchByTerm(String field,String name,int num) {
try {
IndexSearcher searcher = getSearcher();
Query query = new TermQuery(new Term(field,name));//它只能针对一个字段进行查询。
TopDocs tds = searcher.search(query, num);
System.out.println("一共查询了:"+tds.totalHits);
for(ScoreDoc sd:tds.scoreDocs) {
Document doc = searcher.doc(sd.doc);
System.out.println(doc.get("id")+"---->"+
doc.get("name")+"["+doc.get("email")+"]-->"+doc.get("id")+","+
doc.get("attach")+","+doc.get("date"));
}
searcher.close();
} catch (CorruptIndexException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
public void searchByTermRange(String field,String start,String end,int num) {
try {
IndexSearcher searcher = getSearcher();
Query query = new TermRangeQuery(field,start,end,true, true);
/*TermRangeQuery：主要用于文本范围查找;左边界是start 右边界是end（a,c）那么就是b
* Parameters:
field – The field that holds both lower and upper terms.
lowerTerm – The term text at the lower end of the range
upperTerm – The term text at the upper end of the range
includeLower – If true, the lowerTerm is included in the range.
includeUpper – If true, the upperTerm is included in the range.
* */
TopDocs tds = searcher.search(query, num);
System.out.println("一共查询了:"+tds.totalHits);
for(ScoreDoc sd:tds.scoreDocs) {
Document doc = searcher.doc(sd.doc);
System.out.println(doc.get("id")+"---->"+
doc.get("name")+"["+doc.get("email")+"]-->"+doc.get("id")+","+
doc.get("attach")+","+doc.get("date"));
}
searcher.close();
} catch (CorruptIndexException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
public void searchByNumricRange(String field,int start,int end,int num) {
try {
IndexSearcher searcher = getSearcher();
Query query = NumericRangeQuery.newIntRange(field,start, end,true,true);
TopDocs tds = searcher.search(query, num);
System.out.println("一共查询了:"+tds.totalHits);
for(ScoreDoc sd:tds.scoreDocs) {
Document doc = searcher.doc(sd.doc);
System.out.println(doc.get("id")+"---->"+
doc.get("name")+"["+doc.get("email")+"]-->"+doc.get("id")+","+
doc.get("attach")+","+doc.get("date"));
}
searcher.close();
} catch (CorruptIndexException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
public void searchByPrefix(String field,String value,int num) {
//搜索 field里以value为开始的record
try {
IndexSearcher searcher = getSearcher();
Query query = new PrefixQuery(new Term(field,value));
TopDocs tds = searcher.search(query, num);
System.out.println("一共查询了:"+tds.totalHits);
for(ScoreDoc sd:tds.scoreDocs) {
Document doc = searcher.doc(sd.doc);
System.out.println(doc.get("id")+"---->"+
doc.get("name")+"["+doc.get("email")+"]-->"+doc.get("id")+","+
doc.get("attach")+","+doc.get("date"));
}
searcher.close();
} catch (CorruptIndexException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
public void searchByWildcard(String field,String value,int num) {
try {
IndexSearcher searcher = getSearcher();
//在传入的value中可以使用通配符:?和*,?表示匹配一个字符，*表示匹配任意多个字符
Query query = new WildcardQuery(new Term(field,value));
TopDocs tds = searcher.search(query, num);
System.out.println("一共查询了:"+tds.totalHits);
for(ScoreDoc sd:tds.scoreDocs) {
Document doc = searcher.doc(sd.doc);
System.out.println(doc.get("id")+"---->"+
doc.get("name")+"["+doc.get("email")+"]-->"+doc.get("id")+","+
doc.get("attach")+","+doc.get("date"));
}
searcher.close();
} catch (CorruptIndexException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
public void searchByBoolean(int num) {
try {
IndexSearcher searcher = getSearcher();
BooleanQuery query = new BooleanQuery();
/*
* BooleanQuery可以连接多个子查询
* Occur.MUST表示必须出现
* Occur.SHOULD表示可以出现
* Occur.MUSE_NOT表示不能出现
*/
query.add(new TermQuery(new Term("name","zhangsan")), Occur.MUST_NOT);
query.add(new TermQuery(new Term("content","game")),Occur.SHOULD);
TopDocs tds = searcher.search(query, num);
System.out.println("一共查询了:"+tds.totalHits);
for(ScoreDoc sd:tds.scoreDocs) {
Document doc = searcher.doc(sd.doc);
System.out.println(doc.get("id")+"---->"+
doc.get("name")+"["+doc.get("email")+"]-->"+doc.get("id")+","+
doc.get("attach")+","+doc.get("date"));
}
searcher.close();
} catch (CorruptIndexException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
public void searchByFuzzy(int num) {
try {
IndexSearcher searcher = getSearcher();
FuzzyQuery query = new FuzzyQuery(new Term("name","mase"),0.4f,0);
System.out.println(query.getPrefixLength());
System.out.println(query.getMinSimilarity());
TopDocs tds = searcher.search(query, num);
System.out.println("一共查询了:"+tds.totalHits);
for(ScoreDoc sd:tds.scoreDocs) {
Document doc = searcher.doc(sd.doc);
System.out.println(doc.get("id")+"---->"+
doc.get("name")+"["+doc.get("email")+"]-->"+doc.get("id")+","+
doc.get("attach")+","+doc.get("date"));
}
searcher.close();
} catch (CorruptIndexException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
//1、创建QueryParser对象,默认搜索域为content
QueryParser parser = new QueryParser(Version.LUCENE_35, "content", new StandardAnalyzer(Version.LUCENE_35));
//改变空格的默认操作符，以下可以改成AND
//parser.setDefaultOperator(Operator.AND);
//开启第一个字符的通配符匹配，默认关闭因为效率不高
parser.setAllowLeadingWildcard(true);
//搜索content中包含有like的
Query query = parser.parse("like");
//有basketball或者football的，空格默认就是OR
query = parser.parse("basketball football");
//改变搜索域为name为mike
//query = parser.parse("content:like");
//同样可以使用*和?来进行通配符匹配
// query = parser.parse("name:j*");
//通配符默认不能放在首位
// query = parser.parse("email:*@itat.org");
//匹配name中没有mike但是content中必须有football的，+和-要放置到域说明前面
query = parser.parse("- name:mike + like");
//匹配一个区间，注意:TO必须是大写
//query = parser.parse("id:[1 TO 6]");
//闭区间匹配只会匹配到2
//query = parser.parse("id:{1 TO 3}");
//完全匹配I Like Football的
//query = parser.parse("\"I like football\"");
//匹配I 和football之间有一个单词距离的
//query = parser.parse("\"I football\"~1");
//模糊查询
//query = parser.parse("name:make~");
//没有办法匹配数字范围（自己扩展Parser）
//query = parser.parse("attach:[2 TO 10]");
su.searchByQueryParse(query, 10);
public void searchByQueryParse(Query query,int num) {
try {
IndexSearcher searcher = getSearcher();
TopDocs tds = searcher.search(query, num);
System.out.println("一共查询了:"+tds.totalHits);
for(ScoreDoc sd:tds.scoreDocs) {
Document doc = searcher.doc(sd.doc);
System.out.println(doc.get("id")+"---->"+
doc.get("name")+"["+doc.get("email")+"]-->"+doc.get("id")+","+
doc.get("attach")+","+doc.get("date")+"=="+sd.score);
}
searcher.close();
} catch (CorruptIndexException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
public void searchPage(String query,int pageIndex,int pageSize) {
try {
Directory dir = FileIndexUtils.getDirectory();
IndexSearcher searcher = getSearcher(dir);
QueryParser parser = new QueryParser(Version.LUCENE_35,"content",new StandardAnalyzer(Version.LUCENE_35));
Query q = parser.parse(query);
TopDocs tds = searcher.search(q, 500);
ScoreDoc[] sds = tds.scoreDocs;
int start = (pageIndex-1)*pageSize;
int end = pageIndex*pageSize;
for(int i=start;i
System.out.println(sds[i].doc+":"+doc.get("path")+"-->"+doc.get("filename"));
}
searcher.close();
} catch (org.apache.lucene.queryParser.ParseException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
/**
* 根据页码和分页大小获取上一次的最后一个ScoreDoc
*/
private ScoreDoc getLastScoreDoc(int pageIndex,int pageSize,Query query,IndexSearcher searcher) throws IOException {
if(pageIndex==1)return null;//如果是第一页就返回空
int num = pageSize*(pageIndex-1);//获取上一页的数量
TopDocs tds = searcher.search(query, num);
return tds.scoreDocs[num-1];
}
public void searchPageByAfter(String query,int pageIndex,int pageSize) {
try {
Directory dir = FileIndexUtils.getDirectory();
IndexSearcher searcher = getSearcher(dir);
QueryParser parser = new QueryParser(Version.LUCENE_35,"content",new StandardAnalyzer(Version.LUCENE_35));
Query q = parser.parse(query);
//先获取上一页的最后一个元素
ScoreDoc lastSd = getLastScoreDoc(pageIndex, pageSize, q, searcher);
//通过最后一个元素搜索下页的pageSize个元素
TopDocs tds = searcher.searchAfter(lastSd,q, pageSize);
for(ScoreDoc sd:tds.scoreDocs) {
Document doc = searcher.doc(sd.doc);
System.out.println(sd.doc+":"+doc.get("path")+"-->"+doc.get("filename"));
}
searcher.close();
} catch (org.apache.lucene.queryParser.ParseException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
public void searchNoPage(String query) {
try {
Directory dir = FileIndexUtils.getDirectory();
IndexSearcher searcher = getSearcher(dir);
QueryParser parser = new QueryParser(Version.LUCENE_35,"content",new StandardAnalyzer(Version.LUCENE_35));
Query q = parser.parse(query);
TopDocs tds = searcher.search(q, 20);
ScoreDoc[] sds = tds.scoreDocs;
for(int i=0;i
System.out.println(sds[i].doc+":"+doc.get("path")+"-->"+doc.get("filename"));
}
searcher.close();
} catch (org.apache.lucene.queryParser.ParseException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}