在利用springboot編寫服務(wù)器代碼的時(shí)候稳其，我們對(duì)于一個(gè)pojo類（可能是前端傳過來的）一定要進(jìn)行參數(shù)驗(yàn)證皂股。如果寫大量的參數(shù)檢驗(yàn)方法界弧，也是一件很麻煩事伟阔。那么,請(qǐng)往下看......

1.創(chuàng)建工具類

package com.hierway.vslm.common.util;

import com.hierway.utility.api.result.ApiException;
import com.hierway.utility.api.result.ResultCode;
import org.hibernate.validator.HibernateValidator;

import javax.validation.ConstraintViolation;
import javax.validation.Validation;
import javax.validation.Validator;
import java.util.Set;

/**
 * @ClassName ValidateUtil
 * @Description 驗(yàn)證工具類
 * @Date 2019/8/12 17:36
 * @Created by sunyiwei
 */
public class ValidateUtil {

    /**
     *
     * @param validateData
     * @param resultCode
     * @param validateGroup
     * @param <T>
     */
    public static <T> void validateParams(T validateData, ResultCode resultCode, Class... validateGroup){
        if(validateData == null){
            throw new ApiException(ResultCode.PARAMS_ERROR);
        }
        Validator validator = Validation.byProvider(HibernateValidator.class).configure().failFast(true).buildValidatorFactory().getValidator();
        Set<ConstraintViolation<T>> validate = validator.validate(validateData,validateGroup);
        for(ConstraintViolation<T> error : validate){
            throw new ApiException(resultCode,error.getMessage());
        }
    }

}

其中ApiException為自定義的異常愈魏，我們也可以換成return觅玻。

2.pojo類中編寫驗(yàn)證注解以及錯(cuò)誤提示（注解請(qǐng)百度）

package com.hierway.vslm.dataaccess.mybatis.dao;


import com.hierway.model.vslm.common.ApsTime;
import com.hierway.model.vslm.stream.StreamLine;

import javax.persistence.Id;
import javax.persistence.Table;
import javax.validation.constraints.NotBlank;
import javax.validation.constraints.NotNull;
import javax.validation.constraints.Pattern;
import java.time.LocalDateTime;
import java.util.Objects;

import static com.hierway.vslm.common.util.TimeUtil.splitTime;

/**
 * @ClassName StreamLine
 * @Description 流水線與數(shù)據(jù)庫映射實(shí)體類, 以下屬性如果與數(shù)據(jù)庫字段一樣，或者屬性駝峰轉(zhuǎn)下劃線后與數(shù)據(jù)庫一致培漏，則不需要定義@Colomn
 * 如果實(shí)體類名與數(shù)據(jù)庫一致溪厘，或大駝峰轉(zhuǎn)下劃線與數(shù)據(jù)庫表名一致，則不需要定義@Table注解
 * @Date 2019/7/16 16:16
 * @Created by sunyiwei
 */
public class SLine {
    @Id
    private String lineId;
    @Pattern(regexp = "[\\u4e00-\\u9fa5]*[a-z]*[A-Z]*\\d*-*_*", message = "Illegal name")
    @NotBlank(message = "name is empty")
    private String name;
    private String area;
    @NotNull(message = "spec is empty")
    private String specId;
    @NotNull(message = "vplId is empty")
    @NotBlank(message = "vpl No. is blank")
    private String vplId;
    private Integer status;
    @NotNull(message = "startTime is empty")
    private LocalDateTime startTime;
    @NotNull(message = "endTime is empty")
    private LocalDateTime endTime;
    private LocalDateTime createTime;
    private LocalDateTime modifyTime;
    private String modifyPerson;

    public SLine() {

    }
}

3.使用

package com.hierway.vslm.controller;

import com.github.pagehelper.PageInfo;
import org.springframework.web.bind.annotation.*;
import static com.hierway.vslm.common.util.ValidateUtil.*;//靜態(tài)導(dǎo)包

import java.util.List;

@RestController
public class StreamLineRestApi {

    @Autowired
    private StreamLineService streamLineService;

    @ApiOperation(value = "")
    @RequestMapping(value = "/sline",method = RequestMethod.POST)
    public ApiResult<Void> createStreamLine(@RequestBody SLine streamLine){
        validateParams(streamLine,ResultCode.PARAMS_ERROR);//此處調(diào)用驗(yàn)證方法牌柄，如果異常畸悬，則進(jìn)入全局異常捕獲
        boolean createResult = streamLineService.createStreamLine(streamLine);
        if(createResult == true){
            return ResultUtil.success();
        }
        return ResultUtil.error(ResultCode.ADD_FAILED);
    }
}

4.測試

測試參數(shù)截圖

測試結(jié)果截圖