自定义校验器

最新推荐文章于 2024-07-09 10:05:35 发布

荭色海湾

最新推荐文章于 2024-07-09 10:05:35 发布

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CC 4.0 BY-SA版权

分类专栏：谷粒商城项目实战文章标签： vue.js elementui javascript

本文链接：https://blog.youkuaiyun.com/qq_53374893/article/details/137403931

本文详细介绍了前端Vue组件中的表单校验，包括El-UI的使用，以及后端Java中利用JSR303和Spring进行参数校验的方法，包括注解、分组校验和自定义校验器的应用。同时涉及了全局异常处理机制。

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1.前端校验

<template>
  <el-dialog
    :title="!dataForm.brandId ? '新增' : '修改'"
    :close-on-click-modal="false"
    :visible.sync="visible"
  >
    <el-form
      :model="dataForm"
      :rules="dataRule"
      ref="dataForm"
      @keyup.enter.native="dataFormSubmit()"
      label-width="140px"
    >
      <el-form-item label="品牌名" prop="name">
        <el-input v-model="dataForm.name" placeholder="品牌名"></el-input>
      </el-form-item>
      <el-form-item label="品牌logo地址" prop="logo">
        <!-- <el-input v-model="dataForm.logo" placeholder="品牌logo地址"></el-input> -->
        <SingleUpload v-model="dataForm.logo"> </SingleUpload>
      </el-form-item>
      <el-form-item label="介绍" prop="descript">
        <el-input v-model="dataForm.descript" placeholder="介绍"></el-input>
      </el-form-item>
      <el-form-item label="显示状态" prop="showStatus">
        <el-switch
          v-model="dataForm.showStatus"
          active-color="#13ce66"
          inactive-color="#ff4949"
          :active-value="1"
          :inactive-value="0"
        >
        </el-switch>
      </el-form-item>
      <el-form-item label="检索首字母" prop="firstLetter">
        <el-input
          v-model="dataForm.firstLetter"
          placeholder="检索首字母"
        ></el-input>
      </el-form-item>
      <el-form-item label="排序" prop="sort">
        <el-input v-model.number="dataForm.sort" placeholder="排序"></el-input>
      </el-form-item>
    </el-form>
    <span slot="footer" class="dialog-footer">
      <el-button @click="visible = false">取消</el-button>
      <el-button type="primary" @click="dataFormSubmit()">确定</el-button>
    </span>
  </el-dialog>
</template>

<script>
import SingleUpload from "@/components/myupload/singleUpload.vue";

export default {
  components: {
    SingleUpload,
  },
  data() {
    return {
      visible: false,
      dataForm: {
        brandId: 0,
        name: "",
        logo: "",
        descript: "",
        showStatus: 1,
        firstLetter: "",
        sort: 0,
      },
      dataRule: {
        name: [{ required: true, message: "品牌名不能为空", trigger: "blur" }],
        logo: [
          { required: true, message: "品牌logo地址不能为空", trigger: "blur" },
        ],
        descript: [
          { required: true, message: "介绍不能为空", trigger: "blur" },
        ],
        showStatus: [
          {
            required: true,
            message: "显示状态[0-不显示；1-显示]不能为空",
            trigger: "blur",
          },
        ],
        firstLetter: [
          {
            required: true,
            validator: (rule, value, callback) => {
              if (value == "") {
                callback(new Error("首字母必须填写"));
              } else if (!/^[a-zA-Z]$/.test(value)) {