小编Mdu*_*noj的帖子

我是Spring MVC Framework的初学者.两天前我开始学习Spring.出于学习目的,我正在开发一个简单的应用程 即,从表单获取用户输入并在另一页面中显示值.我得到了一个异常"java.lang.IllegalStateException:BindingResult和bean name'命令的普通目标对象'都不可用作请求属性".我无法弄清楚我的代码中有什么问题.我搜索谷歌并尝试了很多解决方案,但问题仍然存在.

这是我的视图index.jsp

<form:form action="/addDisplay" method="POST">
     <form:label path="name"><h3>Name</h3></form:label>
     <form:input type="text" path="name" cssClass="form-control text-center" required="required"/>

     <form:label path="age"><h3>Age</h3></form:label>
     <form:input type="number" path="age" cssClass="form-control text-center" required="required"/>

     <form:label path="work"><h3>Work Place</h3></form:label>
     <form:input type="text" path="work" cssClass="form-control text-center" required="required"/>

     <form:label path="designation"><h3>Designation</h3></form:label>
     <form:input type="text" path="designation" cssClass="form-control text-center" required="required"/>

     <form:label path="area"><h3>Area</h3></form:label>
     <form:input type="text" path="area" placeholder="Where Are You From?" cssClass="form-control text-center" required="required"/>

     <form:label path="mobile"><h3>Mobile Number</h3></form:label>
     <form:input type="number" path="mobile" placeholder="Your Mobile Number.!" cssClass="form-control text-center" required="required"/>

     <form:label path="email"><h3>Email</h3></form:label>
     <form:input type="email" path="email" placeholder="Your Email Id..!" cssClass="form-control text-center" required="required"/>
     <br/>
     <input type="submit" …

我试图在jQuery中获取已检查的单选按钮值.但它将值返回为"未定义".我搜索了这个问题的解决方案,但没有任何对我有用.

我的HTML代码.

<label><input type="radio" class="service" name="service" id="all-service" value="all-service"> All Service</label><br>
<label><input type="radio" class="service" name="service" id="electrician" value="Electrician"> Electrician</label><br>
<label><input type="radio" class="service" name="service" id="painter" value="Painter"> Painter</label><br>
<label><input type="radio" class="service" name="service" id="photo and video coverage" value="Photo and Video Coverage"> Photo and Video Coverage</label>

我的Jquery代码..

$(document).ready(function() {
    $(".service").change(function() {
        alert($(".service :checked").val());
    });
});

这里是我问题的小提琴 ..

我的程序在我的编译器中运行良好,但它显示在线竞赛编译器超出时间限制.
第一行输入将包含N =测试用例数.接下来N行将包含数字n作为测试用例,其中0 <= n <= 1000000000
这是我的代码.

   #include<stdio.h>
   void main()
   {   
   long t,n,i;
   int f = 0;
   scanf("%lu",&t);
   while(t--)
   {
       scanf("%lu",&n);
       f=0;
       if(n==0 || n==1)
       {
           printf("NOT PRIME\n");
       }
       else 
       {
       for(i=2;i<=n/2;i++)
       {
           if(n%i == 0)
           {
               printf("NOT PRIME\n");
               f =1;
               break;
            }
       }
       if(f==0)
       {
           printf("PRIME\n"); 
       }
   }
   }
}

如何更快地执行此程序.帮我.提前致谢.

我是Javafx的新手.我正在通过开发一个简单的应用程序来学习Javafx.我正在尝试从javaFXML中的TextField获取值.我有java.lang.reflect.InvocationTargetException.

Javafx文件.

public class Manoj extends Application {

    @Override
    public void start(Stage stage) throws Exception {
        Parent root = FXMLLoader.load(getClass().getResource("FXMLDocument.fxml"));

        Scene scene = new Scene(root);

        stage.setScene(scene);
        stage.show();
    }
    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        launch(args);
    }

}

FXMLDocument.fxml

<AnchorPane id="AnchorPane" maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" prefHeight="480.0" prefWidth="640.0" xmlns="http://javafx.com/javafx/8" xmlns:fx="http://javafx.com/fxml/1" fx:controller="manoj.FXMLDocumentController">
    <children>
      <AnchorPane layoutX="142.0" layoutY="36.0" prefHeight="361.0" prefWidth="360.0">
         <children>
            <Label fx:id="result" alignment="CENTER" contentDisplay="CENTER" layoutX="61.0" layoutY="289.0" opacity="0.51" prefHeight="77.0" prefWidth="169.0" text="Result Of Addition">
               <font> …