public static <T> List<T> searchDocument(
Class<T> clazz,
Page page,
String[] fields,
List<String> searchkeyword,
List<Integer[]> priceList)
throws Exception {
if (fields == null || fields.length < 1) {
return null;
}
// 解析分词
// 获取第一个组合数量
// 获取索引目录文件
Directory directory = getDirectory(clazz);
if (directory == null) {
return null;
}
// 获取读取的索引
IndexReader indexReader = DirectoryReader.open(directory);
// 获取索引的查询器
IndexSearcher indexSearcher = new IndexSearcher(indexReader);
// 查询指定字段的转换器
// QueryParser parser = new QueryParser("keywords", analyzer);
// String[] str = new String[] { "keywords" };
QueryParser parser = new MultiFieldQueryParser(fields, analyzer);
BooleanQuery andQuery = new BooleanQuery();
// 构建多条and查询
for (String _sk : searchkeyword) {
Query query = parser.parse(_sk);
andQuery.add(query, Occur.MUST);
}
// 构建between查询
if (org.apache.commons.collections4.CollectionUtils.isNotEmpty(priceList)) {
for (Integer[] d : priceList) {
Integer l = d[0];
Integer h = d[1];
boolean f = false;
if (h > 0) {
f = true;
}
NumericRangeQuery<Integer> numericQuery =
NumericRangeQuery.newIntRange("price", l, h, true, f);
andQuery.add(numericQuery, Occur.MUST);
}
}
// 需要查询的关键字
// bq.add(query, Occur.SHOULD);
TopDocs topDocs = null;
int totalCount = indexSearcher.count(andQuery);
if (totalCount == 0) {
return null;
}
if (page == null) {
topDocs = indexSearcher.search(andQuery, totalCount);
} else {
// 查询出的结果文档
int _size = 20;
if (page != null && page.getPageSize() > 0) {
_size = page.getPageSize();
}
// 总条数
page.setTotalCount(totalCount);
int _max = page.getPageIndex() * (page.getPageIndex() - 1);
if (_max - totalCount >= 0) {
return null;
}
// 先获取上一页的最后一个元素
ScoreDoc lastscoreDoc = getLastScoreDoc(page.getPageIndex(), _size, andQuery, indexSearcher);
topDocs = indexSearcher.searchAfter(lastscoreDoc, andQuery, _size);
}
// 查询出的结果文档
ScoreDoc[] hits = topDocs.scoreDocs;
if (hits == null || hits.length < 1) {
return null;
}
List<T> list = new ArrayList<T>(hits.length);
for (int i = 0; i < hits.length; i++) {
Document hitDoc = indexSearcher.doc(hits[i].doc);
T t = clazz.newInstance();
for (String fieldName : ClassUtils.getLuceneFields(clazz)) {
String fieldValue = hitDoc.get(fieldName);
ClassUtils.setPropertieValue(fieldName, t, fieldValue);
}
list.add(t);
}
indexReader.close();
directory.close();
return list;
}
private void hander() {
if (this.href.indexOf("?") < 0) {
this.href += "?";
}
if ((this.href.endsWith("?")) || (this.href.endsWith("&"))) this.href += "pageIndex=";
else {
this.href += "&pageIndex=";
}
Page pageList = (Page) this.pageContext.getRequest().getAttribute(this.data);
if (pageList != null) {
StringBuffer page = new StringBuffer();
int pageNumber = Integer.valueOf(pageList.getPageIndex()).intValue();
int totalPage = Integer.valueOf(pageList.getTotalPage()).intValue();
int totalRow = Integer.valueOf(pageList.getTotalCount()).intValue();
int startPage = pageNumber - 4;
int endPage = pageNumber + 4;
if (totalRow == 0) {
pageNumber = 0;
}
if (startPage < 1) {
startPage = 1;
}
if (endPage > totalPage) {
endPage = totalPage;
}
if (pageNumber <= 8) {
startPage = 1;
}
if (totalPage - pageNumber < 8) {
endPage = totalPage;
}
page.append(
"<div class=\"pagin \"><div class=\"message\">共<i class=\"blue\">"
+ totalRow
+ "</i>条记录，当前显示第 <i class=\"blue\">"
+ pageNumber
+ " </i>页</div><ul class=\"paginList\">");
if (pageNumber <= 1) {
page.append(
"<li class=\"paginItem\"><a href=\"javascript:;\"><span class=\"pagepre\"></span></a></li>");
}
if (pageNumber > 1) {
page.append(
"<li class=\"paginItem\" ><a href=\""
+ this.href
+ (pageNumber - 1)
+ " \"><span class=\"pagepre\"></span></a></li>");
}
if (pageNumber > 8) {
page.append("<li class=\"paginItem\" ><a href=\"" + this.href + "1 \">1</a></li>")
.append("<li class=\"paginItem\" ><a href=\"" + this.href + "2 \">2</a></li>")
.append("<li class=\"paginItem more\"> <a href='#'>...</a></li>");
}
for (int i = startPage; i <= endPage; i++) {
if (pageNumber == i)
page.append("<li class=\"paginItem current\"><a href='#'>" + i + "</a></li>");
else {
page.append(
"<li class=\"paginItem\"><a href=\"" + this.href + i + " \">" + i + "</a></li>");
}
}
if (totalPage - pageNumber >= 8) {
page.append("<li class=\"paginItem more\"> <a href='#'>...</a></li>")
.append(
"<li class=\"paginItem\"><a href=\""
+ this.href
+ (totalPage - 1)
+ " \">"
+ (totalPage - 1)
+ "</a></li>")
.append(
"<li class=\"paginItem\"><a href=\""
+ this.href
+ totalPage
+ " \">"
+ totalPage
+ "</a></li>");
}
if (pageNumber == totalPage)
page.append("<li class=\"paginItem\"><a href='#'><span class=\"pagenxt\"></span></a></li>");
else {
page.append(
"<li class=\"paginItem\"><a href=\""
+ this.href
+ (pageNumber + 1)
+ " \"><span class=\"pagenxt\"></span></a></li>");
}
page.append("</ul></div>");
this.output.append(page);
}
}
/**
* @param clazz
* @param page
* @param fields
* @param searchkeyword
* @return
* @throws Exception
*/
public static <T> List<T> searchDocument(
Class<T> clazz, Page page, String[] fields, String searchkeyword) throws Exception {
if (fields == null || fields.length < 1) {
return null;
}
// 获取索引目录文件
Directory directory = getDirectory(clazz);
if (directory == null) {
return null;
}
// 获取读取的索引
IndexReader indexReader = DirectoryReader.open(directory);
// 获取索引的查询器
IndexSearcher indexSearcher = new IndexSearcher(indexReader);
// 查询指定字段的转换器
// QueryParser parser = new QueryParser("keywords", analyzer);
// BooleanQuery bq = new BooleanQuery();
QueryParser parser = new MultiFieldQueryParser(fields, analyzer);
// 需要查询的关键字
Query query = parser.parse(searchkeyword);
// bq.add(query, Occur.SHOULD);
TopDocs topDocs = null;
int totalCount = indexSearcher.count(query);
if (totalCount == 0) {
return null;
}
if (page == null) {
topDocs = indexSearcher.search(query, totalCount);
} else {
// 查询出的结果文档
int _size = 20;
if (page != null && page.getPageSize() > 0) {
_size = page.getPageSize();
}
// 总条数
page.setTotalCount(totalCount);
int _max = page.getPageIndex() * (page.getPageIndex() - 1);
if (_max - totalCount >= 0) {
return null;
}
// 先获取上一页的最后一个元素
ScoreDoc lastscoreDoc = getLastScoreDoc(page.getPageIndex(), _size, query, indexSearcher);
topDocs = indexSearcher.searchAfter(lastscoreDoc, query, _size);
}
// 通过最后一个元素搜索下页的pageSize个元素
// 查询出的结果文档
ScoreDoc[] hits = topDocs.scoreDocs;
if (hits == null || hits.length < 1) {
return null;
}
List<T> list = new ArrayList<T>(hits.length);
for (int i = 0; i < hits.length; i++) {
Document hitDoc = indexSearcher.doc(hits[i].doc);
T t = clazz.newInstance();
for (String fieldName : ClassUtils.getLuceneFields(clazz)) {
String fieldValue = hitDoc.get(fieldName);
ClassUtils.setPropertieValue(fieldName, t, fieldValue);
}
list.add(t);
}
indexReader.close();
directory.close();
return list;
}
