anchor.diff:  
   
   postAddMessage( )async{//添加留言的函数
  -  var pool = new ConnectionPool(host: '52.8.67.180', port: 3306, user: 'dec2013stu', password: 'dec2013stu', db: 'stu_10130340211');
  +  var pool = new ConnectionPool(host: '52.193.39.90', port: 3306, user: 'dec2013stu', password: 'dec2013stu', db: 'stu_10130340211');
     //print('adding...');
     var curriculumID;
     print(decoded[3]);
  
positive.code: }
  
  getMyclass(HttpRequest request) async{   //获取我的课程列表
    var pool=new ConnectionPool(host: '52.8.67.180', port: 3306, user: 'dec2013stu', password: 'dec2013stu', db: 'stu_10130340211');
    var results = await pool.query('select curriculumname from curriculum where curriculumID in (select curriculumID from xuanke where studentID = "${stuID}")');
    var tearesults = await pool.query('select teachername from teacher where teacherID in(select teacherID from curriculum where curriculumID in (select curriculumID from xuanke where studentID = "${stuID}"))');
    //需把登陆页面获得的学号替换掉select里的101
  
negative.code:   List b = JSON.decode(decoded);//对客户端传过来的信息解码
    var Username = b[0];
    var Password = b[1];
    var pool = new ConnectionPool(host: '52.193.39.90',port: 3306, user: 'dec2013stu', password: 'dec2013stu', db: 'stu_10130340211', max: 5);
    var results = await pool.query('SELECT * FROM user where studentID = "${Username}"and password ="${Password}" ');//查找匹配输入的用户信息
    await results.forEach((row) {
      print('${row.studentID},${row.password}');
  