?public List<Godness> query(List<Map<String,Object>> params) throws SQLException {??????? Connection conn=DbUnit.getConnection();??????? StringBuilder sb=new StringBuilder();??????? sb.append("select * from godness where 1=1 ");??????? if(params!=null && params.size()>0){??????????? for(int i=0;i<params.size();i++){??????????????? Map<String,Object> map=params.get(i);??????????????? sb.append(" and "+map.get("name")+" "+map.get("rela")+" "+map.get("value")+" ");??????????? }??????? }??????? PreparedStatement ps=conn.prepareStatement(sb.toString());?List<Map<String,Object>> params=new ArrayList<Map<String,Object>>();????????????????????? Map<String,Object> param=new HashMap<String,Object> ();????????????????????? param.put("name", "user_name");????????????????????? param.put("rela","=");????????????????????? param.put("value","'小花'");????????????????????? params.add(param);???????????????????? List<Godness> g2= g.query(params);