Spring Boot 验证错误消息未在响应中显示

Question

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

pom.xml 中的验证依赖项

<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
}

休息控制器

@RestController
public class DepartmentResource {

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

当我触发具有空名称的请求时，我收到错误响应，但消息丢失：

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

Answer 1

Spring Boot 限制错误响应中包含的信息，以降低将应用程序的敏感信息泄露给客户端的风险。您可以通过在 或中设置一些属性来显式启用响应中的附加信息。application.propertiesapplication.yml

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