@Override
protected void setUp() throws Exception {
String txt = "京华时报1月23日报道 昨天，受一股来自中西伯利亚的强冷空气影响，本市出现大风降温天气，白天最高气温只有零下7摄氏度，同时伴有6到7级的偏北风。";
//txt = "2008年底发了资金吗";
analyzer = new SimpleAnalyzer();
analyzer = new ComplexAnalyzer();
//analyzer = new MaxWordAnalyzer();
dir = new RAMDirectory();
IndexWriter iw = new IndexWriter(dir, analyzer, MaxFieldLength.UNLIMITED);
Document doc = new Document();
doc.add(new Field("txt", txt, Field.Store.YES, Field.Index.ANALYZED));