2013-07-08期-范围查询及结果排序

public String searcheContent() throws Exception {
searcheResult =  new ArrayList<ContentObject>();
try{
//当查询条件不存在时，查询数据库
if(StringUtils.isEmpty(keyWord)){
searcheResult = contentService.getContentList();
return SUCCESS;
}
Version v = Version.LUCENE_43;
//取得查询对象
IndexReader[] readers =  SearchObject.getInstance().getSearcherReads();
MultiReader mReaders = new MultiReader(readers);
IndexSearcher indexSearch = new  IndexSearcher(mReaders);
Analyzer analyzer =new StandardAnalyzer(v);
//创建boolean查询
BooleanQuery query = new BooleanQuery();
String[] field = { "title", "content"};
BooleanClause.Occur[] flags = new BooleanClause.Occur[2];
flags[0] = BooleanClause.Occur.SHOULD;
flags[1] = BooleanClause.Occur.SHOULD;
Query query1 = MultiFieldQueryParser.parse(v, QueryParser.escape(keyWord), field, flags, analyzer);
//query.add(query1, Occur.MUST);

//日期范围查询
Calendar calendar = Calendar.getInstance();
//查询两个月以内的数据
calendar.add(Calendar.DAY_OF_MONTH, -60);
Date lastMonth = calendar.getTime();
query.add(NumericRangeQuery.newLongRange("createDate", lastMonth.getTime(), new Date().getTime(), true, true), Occur.MUST);
//根据ID范围查询
//query.add(NumericRangeQuery.newIntRange("id", 0, 20, true, true), Occur.MUST);
//true为降序，false为升序
SortField field1 = new SortField("createDate", SortField.Type.LONG,true);
Sort sort = new Sort(field1);
//取得查询结果
TopDocs topDocs =   indexSearch.search(query,100000, sort);

//TopScoreDocCollector topCollector = TopScoreDocCollector.create(10000, true,sort);
// indexSearch.search(query, topCollector);
// TopDocs topDocs = topCollector.topDocs();
int resultCount=topDocs.totalHits;
for(int i=0;i<resultCount;i++){
Document doc = indexSearch.doc(topDocs.scoreDocs[i].doc);
//转换Document对象为内容对象
//ContentObject content = PackContentObject.convertDocToContent(doc);
ContentObject content = PackContentObject.convertDocToContent(doc, query1, analyzer);
//加入到结果列表 返回给前台页面获取
searcheResult.add(content);
}
}catch(Exception e){
e.printStackTrace();
}

return SUCCESS;
}