这里的value对应的值能不能用变量表示

Question

 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);

Answer 1

可以的，只要你类型匹配上就可以

Answer 2

肯定是可以的啊。