Question

我一直收到这个错误，但我相信我正在尝试比较两个字符串...我错过了什么吗？

<link data-require="fontawesome@4.5.0" data-semver="4.5.0" rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/font-awesome/4.5.0/css/font-awesome.css" />
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.9.0/jquery.min.js"></script>
<script src="http://momentjs.com/downloads/moment.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<!DOCTYPE html>
<html lang="en" ng-app="customcal">

<head>
  <meta charset="utf-8" />
  <title>AngularJS Custom Calendar</title>
  <link data-require="fontawesome@4.5.0" data-semver="4.5.0" rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/font-awesome/4.5.0/css/font-awesome.css" />
  <style>
    label {
      display: block;
    }
  </style>

</head>

<body>
  <div class="cal-wrapper">
    <div class="custom-calendar-wrapper" ng-controller="customCal">
      <div class="selected-date" ng-bind="setSelDate"></div>
      <div class="cc-header">
        <div class="cc-year-header">
          <span class="cc-nav-left cc-nav">
              <i class="fa fa-chevron-left"></i>
            </span>
          <span class="cc-year" ng-bind="year"></span>
          <span class="cc-nav-right cc-nav">
              <i class="fa fa-chevron-right"></i>
            </span>
          <span class="cc-year-header-today">Today</span>
        </div>
        <div class="cc-month-header">
          <span class="cc-month" ng-class="{ 'msel' : month == today.m }" ng-repeat="month in months track by $index" ng-bind="month" ng-click="changeMonth(this, month, year);"></span>
        </div>
      </div>
      <ul class="cc-week">
        <li ng-repeat="week in weeks" ng-bind="week"></li>
      </ul>
      <ul class="cc-dates">
        <li class="cc-dt" ng-class="{ 'cc-today' : dt == today.d && month == today.m && year == today.y }" ng-click="changeDate(this, dt, month, year);" ng-repeat="dt in daysofmonth track by $index" ng-bind="dt"></li>
      </ul>
    </div>
  </div>
</body>

</html>

我试图将它们转换为Ints，但这没有帮助。任何建议将不胜感激！

Answer 1

使用compareTo方法。 http://docs.oracle.com/javase/8/docs/api/java/lang/String.html#compareTo-java.lang.String-

这将返回一个int，如果接收者小于参数，则为负。

if (classVolume.compareTo(rs.getString("class_size")) >= 0) ...

operator不能应用于java.lang.string java.lang.string

1 个答案: