SpringBoot 请求参数后端校验

1.例如：

package com.model.user;

import com.model.PageEntity;import lombok.Getter;import lombok.Setter;import lombok.ToString;

import javax.validation.constraints.Size;import java.util.Date;import java.util.List;

/** * @description: 分组管理实体层 * @author: 123 * @date: Create in 2019/4/25 11:17 * @company: xingyunliushui */@Getter@Setter@ToStringpublic class GroupManage extends PageEntity {

    /**     * 分组名称     */    @Size(min = 2, max = 300, message = "分组名称字符需要在2和300之间")    private String name;

    /**     * 分组描述     */    @Size(max = 300, message = "分组描述字符不能超过300")    private String description;

    /**     * 创建时间     */    private Date createTime;

    /**     * 修改时间     */    private Date updateTime;

    /**     * 真正分组ID     */    private Long groupId;

    /**     * 上级分组/项目ID     */    private Long projectId;

    /**     * 项目名称     */    private String projectName;

    /**     * 设备数量     */    private Long deviceNum;

    /**     * 场所数量     */    private Long placeNum;

    /**     * 多个项目集合     */    private List<Long> projectIds;

}

@ApiOperation("新增分组")
    @ApiImplicitParams({
            @ApiImplicitParam(name = "projectId", value = "上级分组/项目ID", required = true, dataType = "Long", paramType = "query"),
            @ApiImplicitParam(name = "name", value = "分组名称", required = true, dataType = "String", paramType = "query"),
            @ApiImplicitParam(name = "description", value = "分组描述", dataType = "String", paramType = "query")
    })
    @PostMapping("/saveGroupManage")
    public JsonResult saveGroupManage(@Valid GroupManage groupManage,
                                      BindingResult bindingResult) {
        // 校验参数
        if (bindingResult.hasErrors()) {
            FieldError fieldError = (FieldError) bindingResult.getAllErrors().get(0);
            return JsonResult.error(fieldError.getDefaultMessage());
        }
以下代码省略

可参考：https://blog.battcn.com/categories/SpringBoot/page/2/

　　　　https://www.dalaoyang.cn/article/48