Spring MVC Hibernate验证器

标签：host   tween   iba   lang   traints   and   ns-3   property   get   

下面的示例演示如何使用Spring Web MVC框架在表单中使用错误处理和验证器。 首先使用Eclipse IDE，并按照以下步骤使用Spring Web Framework开发基于动态表单的Web应用程序：

1. 创建一个名称为 HibernateValidator 的动态WEB项目。
2. 在 com.yiibai.springmvc 包下创建三个Java类：Student和StudentController 。
3. 在jsp子文件夹下创建两个视图文件：addStudent.jsp, result.jsp。
4. 下载Hibernate Validator库 - Hibernate Validator。解压缩hibernate-validator-5.3.4.Final.jar和所需的依赖关系存并将它们放在CLASSPATH中。
5. 在src文件夹下创建属性文件messages.properties。
6. 最后一步是创建所有源和配置文件的内容并运行应用程序，详细如下所述。

完整的项目文件目录结构如下所示 -

Student.java 的代码如下所示 -

package com.yiibai.springmvc;
import org.hibernate.validator.constraints.NotEmpty;
import org.hibernate.validator.constraints.Range;

public class Student {

   @Range(min = 1, max = 150) 
   private Integer age;
   @NotEmpty
   private String name;
   private Integer id;

   public void setAge(Integer age) {
      this.age = age;
   }
   public Integer getAge() {
      return age;
   }

   public void setName(String name) {
      this.name = name;
   }
   public String getName() {
      return name;
   }

   public void setId(Integer id) {
      this.id = id;
   }
   public Integer getId() {
      return id;
   }
}

StudentController.java 的代码如下所示 -

package com.yiibai.springmvc;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.validation.BindingResult;
import org.springframework.validation.annotation.Validated;
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.servlet.ModelAndView;

@Controller
public class StudentController {

   @RequestMapping(value = "/addStudent", method = RequestMethod.GET)
   public ModelAndView student() {
      return new ModelAndView("addStudent", "command", new Student());
   }

   @ModelAttribute("student")
   public Student createStudentModel() {    
      return new Student();
   }

   @RequestMapping(value = "/addStudent", method = RequestMethod.POST)
   public String addStudent(@ModelAttribute("student") @Validated Student student, 
      BindingResult bindingResult, Model model) {
      if (bindingResult.hasErrors()) {
         return "addStudent";
      }
      model.addAttribute("name", student.getName());
      model.addAttribute("age", student.getAge());
      model.addAttribute("id", student.getId());

      return "result";
   }
}

message.properties 配置如下所示 -

NotEmpty.student.name = Name is required!
Range.student.age = Age value must be between 1 and 150!

这里的键可以是..。Value是要显示的消息。

HibernateValidator-servlet.xml 配置如下所示 -

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="com.yiibai.springmvc" />
   mvc:annotation-driven />
   class="org.springframework.context.support.ResourceBundleMessageSource"
      id="messageSource">
      name="basename" value="messages" />
   >
   class="org.springframework.web.servlet.view.InternalResourceViewResolver">
      name="prefix" value="/WEB-INF/jsp/" />
      name="suffix" value=".jsp" />      
   >
>