验证不适用于 spring boot 和 hibernate

Question

我是 spring boot 和 hibernate 的新手。我已经声明了一个模型类 Office，它是：

package com.ashwin.officeproject.model;
import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
import org.springframework.data.annotation.CreatedDate;
import org.springframework.data.annotation.LastModifiedDate;
import org.springframework.data.jpa.domain.support.AuditingEntityListener;
import javax.persistence.*;
import javax.validation.constraints.NotBlank;
import javax.validation.constraints.NotEmpty;
import javax.validation.constraints.NotNull;
import javax.validation.constraints.Size;

import java.util.Date;

@Entity
@Table(name = "office")
public class Office {

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long officeId;

    @NotEmpty(message = "{officename.notempty}")
    private String officeName;

    @NotNull
    private int officeNumber;

    /*@Size(min = 8, max = 72, message = "Your offc address between 8 and 72 characters long")*/
    /*@NotEmpty(message = "Please provide a offc name")*/
    private String officeAddress;

    public Office() {

    }

    //ommitted getters and setters
}

我已宣布我的第一个主要起始课程为：

package com.ashwin.officeproject;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration;
import org.springframework.context.MessageSource;
import org.springframework.context.annotation.Bean;
import org.springframework.context.support.ReloadableResourceBundleMessageSource;
import org.springframework.validation.beanvalidation.LocalValidatorFactoryBean;

@SpringBootApplication
public class OfficeProjectApplication {

    public static void main(String[] args) {
        SpringApplication.run(OfficeProjectApplication.class, args);
    }

    @Bean
    public MessageSource messageSource() {
        ReloadableResourceBundleMessageSource messageSource
          = new ReloadableResourceBundleMessageSource();

        messageSource.setBasename("classpath:messages");
        messageSource.setDefaultEncoding("UTF-8");
        return messageSource;
    }

    @Bean
    public LocalValidatorFactoryBean getValidator() {
        LocalValidatorFactoryBean bean = new LocalValidatorFactoryBean();
        bean.setValidationMessageSource(messageSource());
        return bean;
    }

}

我的控制器类是：

package com.ashwin.officeproject.controller;

import java.util.ArrayList;
import java.util.List;

import javax.validation.Valid;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.ui.ModelMap;
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 com.ashwin.officeproject.model.Office;
import com.ashwin.officeproject.repository.OfficeRepsitory;

@Controller
public class MainController {

    @Autowired
    OfficeRepsitory officeRepository;


    @RequestMapping(value = { "/office"}, method = RequestMethod.GET)
    public String office(Model model) {
       model.addAttribute("offices", new Office()); 
      return "office";
    }

    @RequestMapping(value = "/addOffice", method = RequestMethod.POST)
    public String submit(@Valid @ModelAttribute("offices") Office office, 
      BindingResult result, ModelMap model) {
        if (result.hasErrors()) {
            return "error";
        }
        officeRepository.save(office);
        model.addAttribute("offices", new Office()); 
        return "office";
    }

}

我有一个 office.jsp 页面，它是：

<%@ taglib prefix="form" uri="http://www.springframework.org/tags/form" %>
<jsp:include page="./header.jsp" />
 <style>
      .error {
         color: #ff0000;
      }

      .errorblock {
         color: #000;
         background-color: #ffEEEE;
         border: 3px solid #ff0000;
         padding: 8px;
         margin: 16px;
      }
   </style>
    <form:form method="POST"  action="/addOffice"   modelAttribute="offices"  >

             <table>
                <tr>
                    <td><form:label path="officeName">Name</form:label></td>
                    <td><form:input path="officeName"/></td>
                    <form:errors path = "officeName" cssClass = "error" />

                </tr>
                <tr>
                    <td><form:label path="officeNumber">Number</form:label></td>
                    <td><form:input path="officeNumber"/></td>


                </tr>
                <tr>
                    <td><form:label path="officeAddress">
                      Address</form:label></td>
                    <td><form:input path="officeAddress"/></td>


                </tr>
                <tr>
                    <td><input type="submit" value="Submit"/></td>
                </tr>
            </table>
        </form:form>


<jsp:include page="./footer.jsp" />    

我的 pom.xml 是：

<?xml version="1.0" encoding="UTF-8"?>
<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/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.1.3.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.ashwin</groupId>
    <artifactId>OfficeProject</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>OfficeProject</name>
    <description>OfficeProject</description>

    <properties>
        <java.version>1.8</java.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jpa</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
<dependency>
    <groupId>org.hibernate</groupId>
    <artifactId>hibernate-validator</artifactId>
    <version>6.0.12.Final</version>
</dependency>
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-validation</artifactId>
</dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
            <scope>runtime</scope>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <scope>runtime</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>

        <dependency>
    <groupId>org.apache.tomcat.embed</groupId>
    <artifactId>tomcat-embed-jasper</artifactId>
</dependency>

<dependency>
    <groupId>javax.servlet</groupId>
    <artifactId>jstl</artifactId>
</dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

</project>

当我单击提交按钮时，如果表单中的输入字段为空，我想验证我的表单并在输入字段下方显示消息，例如“请提供有效的办公室名称”。但是发生的事情是当我点击提交按钮然后它会转到我的 error.jsp 页面，但它没有显示我在上面声明的任何验证消息。我的错误页面显示是：

错误.jsp

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
    pageEncoding="ISO-8859-1"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="ISO-8859-1">
<title>Insert title here</title>
</head>
<body>
<p>Error</p>
</body>
</html>      

我在 eclipse 的控制台中也没有收到任何错误。当我的表单字段为空时，它只是在 error.jsp 页面中重定向我。

Answer 1

seems jar conflicts issue as org.hibernate.validator:hibernate-validator:jar(javax.validation:validation-api:jar is part of hibernate validator) is part of spring web dependency so no need to add extra dependency which might conflict so recommend to remove below dependencies and build project again by clean install(mvn clean install).

remove below dependencies:

<dependency>
    <groupId>org.hibernate</groupId>
    <artifactId>hibernate-validator</artifactId>
    <version>6.0.12.Final</version>
</dependency>
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-validation</artifactId>
</dependency>

and make sure you access error message below: not required braces and property name match with your actual message property name you defined.(camelcase matters with name).

@NotEmpty(message = "officename.notempty")