使用javax.validation.constraints对请求体进行统一校验

<dependency>
	<groupId>org.hibernate.validator</groupId>
	<artifactId>hibernate-validator</artifactId>
	<version>6.0.17.Final</version>
	<scope>compile</scope>
</dependency>

import lombok.AllArgsConstructor;
import lombok.Builder;
import lombok.Data;
import lombok.NoArgsConstructor;
import org.hibernate.validator.constraints.Length;
import javax.validation.constraints.NotEmpty;
import javax.validation.constraints.NotBlank;
import javax.validation.constraints.NotNull;


/**
 * @author FanHuiFang
 * @version 1.0
 * @date 2024年04月27日 19:58
 */
@Data
@Builder
@AllArgsConstructor
@NoArgsConstructor
public class UserSaveReq {
    @NotBlank(message = "name不能为空")
    private String name;

    @NotNull(message = "年龄不能为空")
    private Long age;

    @NotEmpty(message = "朋友列表不能为空")
    private List<String> friends;

    @NotNull(message = "客户手机号不能为空")
    @Length(min = 8, max = 16, message = "客户手机号不合法")
    private String userPhone;
}

import org.springframework.web.bind.annotation.*;
import javax.validation.Valid;
import org.springframework.validation.Errors;

@PostMapping(value = "/saveUser")
public ResultBean<String> saveUser(@Valid @RequestBody UserSaveReq req, Errors errors) {
    if (Objects.isNull(req)) return ResultBean.fail("缺少必要的请求参数");
    if (errors.hasErrors() && Objects.nonNull(errors.getFieldError())) {
        String errorMessage = errors.getFieldError().getDefaultMessage();
        log.error("保存用户信息时请求参数错误:{}", errorMessage);
        return ResultBean.fail(errorMessage);
    }
    //保存处理......
    
}

{
    "code": 0,
    "message": "客户手机号不合法",
    "data": null
}

import lombok.AllArgsConstructor;
import lombok.Builder;
import lombok.Data;
import lombok.ToString;

import java.io.Serializable;

/**
 * @author FanHuiFang
 * @version 1.0
 * @date 2024年04月27日 21:50
 */

@Builder
@Data
@AllArgsConstructor
@ToString
public class ResultBean<T> implements Serializable {
    private Integer code;
    private String message;
    private T data;


    public ResultBean(int code, String message, T data) {
        this.code = code;
        this.data = data;
        this.message = message;
    }

    public ResultBean(Integer code, String message) {
        this.code = code;
        this.message = message;
    }

    public static <T> ResultBean<T> data(T data) {
        return data("操作成功", data);
    }

    public static <T> ResultBean<T> data(String message, T data) {
        return data(1, message, data);
    }

    public static <T> ResultBean<T> data(int code, String message, T data) {
        return new ResultBean<>(code, message, data);
    }


    public static <T> ResultBean<T> fail(String message, T data) {
        return new ResultBean<>(0, message, data);
    }

    public static <T> ResultBean<T> fail(Integer code, String message) {
        return new ResultBean<>(code, message);
    }

    public static <T> ResultBean<T> fail(String message) {
        return new ResultBean<>(0, message, null);
    }
}