【Java】通过JSONObject获取数据库查询结果

DB操作

public List QueryLoginYHXX(String yhzh) {
List listYHXX = null;
String sql = "SELECT * FROM YHZH LEFT JOIN JGYHXX ON YHZH.YHBH = JGYHXX.YHBH LEFT JOIN JGBM ON JGBM.JGBM = JGYHXX.JGBM WHERE YHZH = '"+yhzh+"'";
System.out.println(sql);
try {
listYHXX = conn.queryForList(sql);
} catch (DataAccessException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return listYHXX;
}

调用查询语句，通过JSONObject获取某一字段的值

//根据用户账号获取用户姓名，角色，所属部门等信息
List YHXX = dao1.QueryLoginYHXX(userName);
JSONArray jsonArray = JSONArray.fromObject(YHXX);
System.out.println(jsonArray.toString());
JSONObject object = (JSONObject)jsonArray.opt(0);
String userYHXM = object.getString("XM");
String userBMMC = object.getString("JGMC");
String userBMBH = object.getString("JGBM");