Kotlin JSR 303 Bean 验证从 Spring Boot 版本 2.3 开始不起作用。0.RELEASE

Question

最近在做一个项目时，我注意到 JSR303 Bean Validation 在 Springboot 版本 2.3.0.RELEASE 中不起作用之后（至少，不是以同样的方式，我什至无法弄清楚发布文档 https://spring.io/blog/2020/05/15/spring-boot-2-3-0-available-now 发生了什么变化）对于 Kotlin。

问题： @NotNull、@NotBlank 等 bean 注释 被忽略，验证不会启动。

有没有人注意到类似的事情或者知道发生了什么变化以及如何使 bean 验证与 Springboot 2.3.0.RELEASE 一起工作？

这是我的设置-

工作设置

data class HelloDto(

@field:NotBlank(message = "greeting is required")
val greeting: String,

@field:NotBlank(message = "count is Required")
val count: String
)


@RestController
@RequestMapping("/api")
class MyController {

    @PostMapping("/hello")
    fun helloKotlin(@RequestBody @Valid helloDto: HelloDto): String {
        return "hello world "+ helloDto.greeting
    }
}

<?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 https://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>2.2.13.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.example</groupId>
    <artifactId>demo</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>demo</name>
    <description>demo</description>
    <properties>
        <java.version>11</java.version>
        <kotlin.version>1.5.31</kotlin.version>
    </properties>
    <dependencies>
        <dependency>
            <groupId>javax.validation</groupId>
            <artifactId>validation-api</artifactId>
            <version>2.0.1.Final</version>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
            <version>2.2.13.RELEASE</version>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter</artifactId>
        </dependency>
        <dependency>
            <groupId>org.jetbrains.kotlin</groupId>
            <artifactId>kotlin-reflect</artifactId>
        </dependency>
        <dependency>
            <groupId>org.jetbrains.kotlin</groupId>
            <artifactId>kotlin-stdlib-jdk8</artifactId>
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.module</groupId>
            <artifactId>jackson-module-kotlin</artifactId>
            <version>2.13.0</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.springdoc</groupId>
            <artifactId>springdoc-openapi-ui</artifactId>
            <version>1.6.2</version>
        </dependency>

    </dependencies>

    <build>
        <sourceDirectory>${project.basedir}/src/main/kotlin</sourceDirectory>
        <testSourceDirectory>${project.basedir}/src/test/kotlin</testSourceDirectory>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
            <plugin>
                <groupId>org.jetbrains.kotlin</groupId>
                <artifactId>kotlin-maven-plugin</artifactId>
                <configuration>
                    <args>
                        <arg>-Xjsr305=strict</arg>
                    </args>
                    <compilerPlugins>
                        <plugin>spring</plugin>
                    </compilerPlugins>
                </configuration>
                <dependencies>
                    <dependency>
                        <groupId>org.jetbrains.kotlin</groupId>
                        <artifactId>kotlin-maven-allopen</artifactId>
                        <version>${kotlin.version}</version>
                    </dependency>
                </dependencies>
            </plugin>
            <plugin>
                <groupId>org.openapitools</groupId>
                <artifactId>openapi-generator-maven-plugin</artifactId>
                <!-- RELEASE_VERSION -->
                <version>5.1.0</version>
                <!-- /RELEASE_VERSION -->
                <executions>
                    <execution>
                        <goals>
                            <goal>generate</goal>
                        </goals>
                        <configuration>
                            <inputSpec>${project.basedir}/src/main/resources/bank-api.yaml</inputSpec>
                            <generatorName>java</generatorName>
                            <configOptions>
                                <sourceFolder>src/gen/java/main</sourceFolder>
                            </configOptions>
                        </configuration>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>

</project>

要求：

{
  "name":"",
  "count":""
}

响应：

{
    "timestamp": "2021-12-23T16:18:03.177+0000",
    "status": 400,
    "error": "Bad Request",
    "errors": [
        {
            "codes": [
                "NotBlank.user.name",
                "NotBlank.name",
                "NotBlank.java.lang.String",
                "NotBlank"
            ],
            "arguments": [
                {
                    "codes": [
                        "user.name",
                        "name"
                    ],
                    "arguments": null,
                    "defaultMessage": "name",
                    "code": "name"
                }
            ],
            "defaultMessage": "must not be blank",
            "objectName": "user",
            "field": "name",
            "rejectedValue": "",
            "bindingFailure": false,
            "code": "NotBlank"
        }
    ],
    "message": "Validation failed for object='user'. Error count: 1",
    "path": "/users"
}

非工作设置 - 一旦我将 springboot 更新为 2.3.0.RELEASE，验证就被忽略了。

响应：

我发布这个问题有两个原因 -

获得一些帮助找出发生了什么变化。
为了帮助其他人不要因为版本问题浪费那么多时间（我花了一天时间才弄明白）

TIA！

Answer 1

发布此答案以防其他人遇到此问题。

问题是

Validation Starter no longer included in web starters

所以我们必须手动添加验证依赖。

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

https://github.com/spring-projects/spring-boot/wiki/Spring-Boot-2.3-Release-Notes#spring-boot-23-release-notes

Kotlin JSR 303 Bean 验证从 Spring Boot 版本 2.3 开始不起作用。0.RELEASE

Kotlin JSR303 Bean Validation doesn’t work from Springboot version 2.3.0.RELEASE onwards

spring-boot

kotlin

bean-validation