hbase 过滤之SingleColumnValueFilter问题

想通过：通过SingleColumnValueFilter来scan:想scan出加粗的那列 

zkb                             column=course:art, timestamp=1356629086401, value=87                                       

scan表的结果：

hbase(main):002:0> scan 'scores'

ROW                              COLUMN+CELL                                                                                 
 zkb                             column=course:, timestamp=1356629086396, value=90                                           
 zkb                             column=course:art, timestamp=1356629086401, value=87                                        
 zkb                             column=course:math, timestamp=1356629086398, value=97                                       
 zkb                             column=grade:, timestamp=1356629086385, value=5                                             
1 row(s) in 0.2260 seconds

hbase(main):003:0>
通过SingleColumnValueFilter来scan:想scan出加粗的那列
zkb                             column=course:art, timestamp=1356629086401, value=87                                        
public static void scanBySingleColumnValueFilter(String tableName,String family,String qual,int value) throws IOException{
             HTable table = new HTable(conf, tableName); 
             byte[] b_family = Bytes.toBytes(family);
             byte[] b_qual = Bytes.toBytes(qual);
             byte[] b_value = Bytes.toBytes(value);
             
             FilterList filterList = new FilterList();   
             SingleColumnValueFilter singleColumnValueFilter = new SingleColumnValueFilter(b_family, b_qual, CompareOp.NOT_EQUAL, b_value);
            // singleColumnValueFilter.setFilterIfMissing(true);
             filterList.addFilter(singleColumnValueFilter);
             
             Scan scan = new Scan();
             scan.setFilter(filterList);
             scan.addColumn(b_family, b_qual);
             ResultScanner rs = table.getScanner(scan); 
             showResultScanner(rs);
       }
主方法中：
 HBaseClient.scanBySingleColumnValueFilter(tablename, "course", "art", 87); //这里用String吧
=========== scanBySingleColumnValueFilter =======
zkb course:art 1356630307010 87

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