Spring Boot表单验证不起作用 [英] Spring Boot Form Validation Not Working

问题描述

我是 Spring Boot Application 的新手.我有搜索谷歌自己学习Spring Boot Application.我已经在 CRUD 上完成了Spring Boot Application的最简单的操作，但是遇到了与表单验证有关的一个问题.我在这里粘贴了代码，如果有的话可以帮助我找出表单验证的问题.

I am new on Spring Boot Application. I have search google to learn Spring Boot Application myself. I have done easiest stuff on CRUD for Spring Boot Application but facing one problem regarding form validation. I have paste code here with if any one help me to find out problem for form validation.

User.java

UserController.java

createUser.jsp

pom.xml

<modelVersion>4.0.0</modelVersion>

<groupId>com.example</groupId>
<artifactId>demo</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>war</packaging>

<name>SpringBootJSP</name>
<description>Demo project for Spring Boot</description>

<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>1.3.1.RELEASE</version>
    <relativePath /> <!-- lookup parent from repository -->
</parent>

<properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <java.version>1.7</java.version>
</properties>

<dependencies>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
    </dependency>

    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-tomcat</artifactId>
        <scope>provided</scope>
    </dependency>

    <dependency>
        <groupId>org.apache.tomcat.embed</groupId>
        <artifactId>tomcat-embed-jasper</artifactId>
        <scope>provided</scope>
    </dependency>
    <dependency>
        <groupId>javax.servlet</groupId>
        <artifactId>jstl</artifactId>
    </dependency>

    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-test</artifactId>
        <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-webmvc-portlet</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-data-jpa</artifactId>
    </dependency>

    <dependency>
        <groupId>com.h2database</groupId>
        <artifactId>h2</artifactId>
    </dependency>

    <dependency>
        <groupId>org.springframework.data</groupId>
        <artifactId>spring-data-couchbase</artifactId>
    </dependency>
</dependencies>
<build>
    <plugins>
        <plugin>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-maven-plugin</artifactId>
        </plugin>
    </plugins>
</build>

推荐答案

此行:

model.addAtrribute("errors", bindingErrors.getAllErrors())

不需要

.

文档说明:

任何违反验证的行为都会自动显示为以下内容中的错误: BindingResult可作为方法参数访问并且也可呈现 在Spring MVC HTML视图中.

Any validation violations will automatically be exposed as errors in the BindingResult accessible as a method argument and also renderable in Spring MVC HTML views.

错误将自动显示在视图中.

Errors will be exposed automatically to the view.

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