@Range 在 spring mvc 中不工作

Question

我正在使用 spring mvc 并尝试通过在我的模型 Goal 中使用 @Range 来验证表单 addGoal.jsp 中的用户输入。但是如果我输入值例如 223 大于 120，因为我在注释中设置它打印 Result Errors false（因为我在控制器中的 updateGoal 方法中打印）并且没有路由到 addGoal 视图我似乎无法理解为什么它不验证 result.hasErrors() 给我错误，即使我输入的值不在范围内。

型号

import org.hibernate.validator.constraints.Range;

public class Goal {

    @Range(min = 1,max = 120)    // validation not working
    private int minutes;

    public int getMinutes() {
        return minutes;
    }

    public void setMinutes(int minutes) {
        this.minutes = minutes;
    }

}

控制器

import javax.validation.Valid;

import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.validation.BindingResult;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.SessionAttributes;

import testspring.model.Goal;

@Controller
@SessionAttributes("goal")
public class GoalController {


    @RequestMapping(value = "/addGoal",method = RequestMethod.GET)
    public String addGoal(Model model){
        Goal g=new Goal();
        g.setMinutes(10);
        model.addAttribute("goal", g);
        return "addGoal";       
    }
    @RequestMapping(value = "/addGoal",method = RequestMethod.POST)
    public String updateGoal(@Valid @ModelAttribute ("goal") Goal goal,BindingResult result){

        System.out.println("Result Errors "+result.hasErrors());
        System.out.println("Minutes Updated "+goal.getMinutes());
        if(result.hasErrors())
        return "addGoal";
        return "redirect:addMinutes.html";      
    }

}

addGoal.jsp

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
    pageEncoding="ISO-8859-1"%>
        <%@ taglib prefix="form" uri="http://www.springframework.org/tags/form" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Insert title here</title>
</head>
<body>
<form:form commandName="goal">

<table>
<tr>
<td>Enter Minutes</td>
<td><form:input path="minutes"/></td>
</tr>
<tr>
<td colspan="2">
<input type="submit" value="Enter Goal Minutes">
</td>
</tr>
</table>
</form:form>
</body>
</html>

servlet-config.xml

    <beans xmlns="http://www.springframework.org/schema/beans"
        xmlns:context="http://www.springframework.org/schema/context"
        xmlns:mvc="http://www.springframework.org/schema/mvc" 
        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
        xsi:schemaLocation="
            http://www.springframework.org/schema/beans     
            http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
            http://www.springframework.org/schema/context 
            http://www.springframework.org/schema/context/spring-context-3.0.xsd
            http://www.springframework.org/schema/mvc
            http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd">

        <context:component-scan base-package="testspring" />

        <mvc:annotation-driven />
        <mvc:resources location="pdfs" mapping="/pdfs/**"/>

        <mvc:interceptors>

        <bean class="org.springframework.web.servlet.i18n.LocaleChangeInterceptor">
        <property name="paramName" value="language"></property>
        </bean>
        </mvc:interceptors>

        <bean id="localeResolver" class="org.springframework.web.servlet.i18n.SessionLocaleResolver">
        <property name="defaultLocale" value="en"></property>
        </bean>


        <bean id="messageSource" class="org.springframework.context.support.ResourceBundleMessageSource" >
      <property name="basename" value="messages"></property>
        </bean>

        <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/jsp/"/>
        <property name="suffix" value=".jsp"></property>
        </bean>

    </beans>

pom.xml

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>testspring</groupId>
  <artifactId>FitnessTracker</artifactId>
  <packaging>war</packaging>
  <version>0.0.1-SNAPSHOT</version>
  <name>FitnessTracker Maven Webapp</name>
  <url>http://maven.apache.org</url>
  <dependencies>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>3.8.1</version>
      <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-webmvc</artifactId>
        <version>3.2.0.RELEASE</version>
    </dependency>
    <dependency>
        <groupId>javax.servlet</groupId>
        <artifactId>servlet-api</artifactId>
        <version>2.5</version>
        <scope>provided</scope>
    </dependency>
    <dependency>
        <groupId>javax.servlet</groupId>
        <artifactId>jstl</artifactId>
        <version>1.2</version>
        <scope>provided</scope>
    </dependency>
    <dependency>
        <groupId>org.hibernate</groupId>
        <artifactId>hibernate-validator</artifactId>
        <version>4.2.0.Final</version>
        <scope>provided</scope>
    </dependency>
  </dependencies>
  <build>
    <finalName>FitnessTracker</finalName>
  </build>
</project>

我已经发布了我的 xml，以便任何人都可以看到。

如有任何帮助，我们将不胜感激。
谢谢

Answer 1

在您的 pom 中，您有以下依赖关系

<dependency>
    <groupId>org.hibernate</groupId>
    <artifactId>hibernate-validator</artifactId>
    <version>4.2.0.Final</version>
    <scope>provided</scope>
</dependency>

罪魁祸首是<scope>provided</scope>。要使 Bean Validation 工作，必须在 class 路径上有一个实现。编码时是这种情况，但部署时不是这种情况（因为依赖项未打包在 war 中）。

如果有可用的 JSR-303 实现，

Spring 只会注册一个 LocalValidatorFactoryBean，否则它不会注册，验证也不起作用。

修复方法是简单地删除 <scope>provided</scope>。

Answer 2

即使在删除范围后我也遇到了这个问题 tag.Then 我从本地存储库中删除了休眠文件夹 C:\Users\computerName\.m2\repository\org\hibernate 然后使用了 maven update下载与休眠相关的所有 jar again.Now 它工作正常。

@Range 在 spring mvc 中不工作

@Range not working in spring mvc

java

spring

jsp

spring-mvc

bean-validation