我有以下简单项目来测试 spring boot 验证。我使用的是 Spring Boot 版本 2.5.6

pom.xml 中的验证依赖

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

DTO对象

import javax.validation.constraints.NotNull;

public class DepartmentDTO {

    @NotNull(message = "Department name can not be empty")
    private String name;

    // getter and setter
}

REST Controller

@RestController
public class DepartmentResource {

    @PostMapping("/departments")
    public ResponseEntity<DepartmentDTO> createDepartment(@Valid @RequestBody DepartmentDTO department) {
        return new ResponseEntity<>(department, HttpStatus.OK);
    }
}

当我用null name 发出请求时，我收到了错误响应，但消息丢失了:

{
    "timestamp": "2021-12-03T09:13:52.729+00:00",
    "status": 400,
    "error": "Bad Request",
    "path": "/departments"
}

最佳答案

Spring Boot 限制错误响应中包含的信息，以降低将有关应用程序的敏感信息泄露给客户端的风险。您可以通过设置 some properties 在响应中显式启用其他信息。在 application.properties 或 application.yml 中。

server.error.include-binding-errors=always
server.error.include-message=always

https://stackoverflow.com/questions/70212178/