Spring Boot 中的大小注释返回 400 Bad Request [英] Size Annotation in Spring Boot is returning 400 Bad Request

问题描述

在 spring boot bean 类中执行 @Size 注释时没有收到消息错误

I am not getting message error while executing @Size annotation in spring boot bean class

下面是我的文件pom.xml

below are my files pom.xml

<?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>2.3.2.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.val</groupId>
    <artifactId>Spring-boot-validation</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>Spring-boot-validation</name>
    <description>Demo project for Spring Boot</description>

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

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

        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
            <exclusions>
                <exclusion>
                    <groupId>org.junit.vintage</groupId>
                    <artifactId>junit-vintage-engine</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
    </dependencies>

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

</project>

用户输入.java

package com.val.Springbootvalidation;

import java.time.LocalDate;

import javax.validation.constraints.NotNull;
import javax.validation.constraints.Size;

import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;

@Data
@NoArgsConstructor
@AllArgsConstructor
public class UserInput {
    @NotNull(message = "lastname can not be null")
    @Size(min=3, max= 20, message = "Lastname should be between 3 and 20")
    private String lastName;
    private String middleName;
    private String firstName;
    private LocalDate dateOfBirth;
    private Integer siblings;
}

用户.java

package com.val.Springbootvalidation;

import java.time.LocalDate;

import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;

@Data
@NoArgsConstructor
@AllArgsConstructor
public class User {
    private Long id;
    private String lastName;
    private String middleName;
    private String firstName;
    private LocalDate dateOfBirth;
    private Integer siblings;
}

SpringBootValidationApplication.java(主加载器)

SpringBootValidationApplication.java (Main loader)

package com.val.Springbootvalidation;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class SpringBootValidationApplication {

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

我传递的输入是

{
    "firstName":"s"
}

我得到的回复是

{
    "timestamp": "2020-07-27T07:20:04.655+00:00",
    "status": 400,
    "error": "Bad Request",
    "message": "",
    "path": "/api/user/save"
}

在控制台日志中显示

[org.springframework.web.bind.MethodArgumentNotValidException: Validation failed for argument [0] in public com.val.Springbootvalidation.User com.val.Springbootvalidation.UserController.save(com.val.Springbootvalidation.UserInput): [Field error in object 'userInput' on field 'lastName': rejected value [null]; codes [NotNull.userInput.lastName,NotNull.lastName,NotNull.java.lang.String,NotNull]; arguments [org.springframework.context.support.DefaultMessageSourceResolvable: codes [userInput.lastName,lastName]; arguments []; default message [lastName]]; default message [lastname can not be null]] ]

推荐答案

Spring Boot 2.3.2 存在验证消息问题或行为改变.尝试降级到 Spring Boot 2.2.9

Spring Boot 2.3.2 has issues with validation messages, or behaviour changed. Try to downgrade to Spring Boot 2.2.9

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