anchor.diff:  }
   
   
  -
   ///点击学生登陆按钮后的响应事件
   ///学生页面的数据
   void xsym(MouseEvent e) {
   //todo 访问数据库，获取所有学生数据，并格式化为json
  -  displayTable = querySelector('#stu_namenum');
  -  displayTable = querySelector('#stushow');
  +  print ("Loading data");//调试
  +  var url = "http://$host/student/{stuid_x}"; // 链接到学生主页面
  +  var request = HttpRequest.getString(url).then(onDataLoaded);
  +
  +querySelector('#stuname').text="学生姓名：如花";
  +querySelector('#stusnum').text="学生学号：1001";
   
   ///学生奖学金信息界面
     displayTable=querySelector('#stu_show'); //奖学金分配表格
  
positive.code: import 'dart:html';
  import 'package:sqljocky/sqljocky.dart';
  import 'dart:async';
  
  String note;
  
  TextInputElement TextInput;
  ParagraphElement displayNote;
  TableElement displayTable;
  
  
  void main() {
  ///登陆界面
  
negative.code: 
  }
  
  onDataLoaded(responseText) {
  
    var jsonString = responseText;
    Map stu_allDATA=JSON.decode(jsonString);
    querySelector("#xkcjscore").text =  stu_allDATA["如花"]["xkcj"].toString();
    querySelector("#xskyscore").text =  stu_allDATA["如花"]["xsky"].toString();
    querySelector("#shhdscore").text =  stu_allDATA["如花"]["shhd"].toString();
    querySelector("#jxjlevelscore").text =  stu_allDATA["如花"]["jxj"].toString();
  }
  
  /// 显示成绩分析扇形图
  