<!-- 编辑界面 -->
    <el-dialog :title="title" :visible.sync="editFormVisible" width="30%" @click="closeDialog">
      <el-form label-width="120px" :model="editForm" :rules="rules" ref="editForm">
        <el-form-item label="文章标题" prop="title">
          <el-input size="small" v-model="editForm.title" auto-complete="off" placeholder="请输入文章标题"></el-input>
        </el-form-item>
        <el-form-item label="文章内容" prop="body">
          <el-input size="small" v-model="editForm.body" auto-complete="off" placeholder="请输入文章内容"></el-input>
        </el-form-item>
      </el-form>
      <div slot="footer" class="dialog-footer">
        <el-button size="small" @click="closeDialog">取消</el-button>
        <el-button size="small" type="primary" class="title" @click="submitForm('editForm')">保存</el-button>
      </div>
    </el-dialog>

②将rules加入表单验证（data里面定义规则）

rules: {
          title: [{
              required: true,
              message: '请输入文章标题',
              trigger: 'blur'
            },
            {
              min: 3,
              max: 5,
              message: '长度在 3 到 5 个字符',
              trigger: 'blur'
            }
          ],
          body: [{
            required: true,
            message: '请选文章内容',
            trigger: 'blur'
          }]
        }
      }
    },

③调动规则

 submitForm(formName) {
        this.$refs[formName].validate((valid) => {
          if (valid) {
            alert('submit!');
          } else {
            console.log('error submit!!');
            return false;
          }
        });
      }

完整代码

Articles.vue

<template>
  <div>
    <!-- 只是文章列表组件 -->
    <!-- 搜索筛选 -->
    <el-form :inline="true" :model="formInline" class="user-search">
      <el-form-item label="搜索：">
        <el-input size="small" v-model="formInline.title" placeholder="文章标题"></el-input>
      </el-form-item>
      <el-form-item>
        <el-button size="small" type="primary" icon="el-icon-search" @click="search">搜索</el-button>
        <el-button size="small" type="primary" icon="el-icon-plus" @click="handleAdd()">添加</el-button>
      </el-form-item>
    </el-form>
    <!-- 列表 -->
    <el-table size="small" :data="listData" highlight-current-row border element-loading-text="拼命加载中"
      style="width: 100%;">
      <el-table-column align="center" type="selection" width="60">
      </el-table-column>
      <el-table-column sortable prop="id" label="文章id" width="300">
      </el-table-column>
      <el-table-column sortable prop="title" label="文章标题" width="300">
      </el-table-column>
      <el-table-column sortable prop="body" label="文章内容" width="300">
      </el-table-column>
      <el-table-column sortable prop="editUser" label="修改人" width="300">
      </el-table-column>
      <el-table-column align="center" label="操作" min-width="300">
        <template slot-scope="scope">
          <el-button size="mini" @click="handleEdit(scope.$index, scope.row)">编辑</el-button>
          <el-button size="mini" type="danger" @click="deleteUser(scope.$index, scope.row)">删除</el-button>
        </template>
      </el-table-column>
    </el-table>
    <!-- 分页条-->
    <el-pagination style="margin-top: 20px;" @size-change="handleSizeChange" @current-change="handleCurrentChange"
      :current-page="formInline.page" :page-sizes="[10, 20, 30, 50]" :page-size="100"
      layout="total, sizes, prev, pager, next, jumper" :total="formInline.total">
    </el-pagination>

    <!-- 编辑界面 -->
    <el-dialog :title="title" :visible.sync="editFormVisible" width="30%" @click="closeDialog">
      <el-form label-width="120px" :model="editForm" :rules="rules" ref="editForm">
        <el-form-item label="文章的名称·" prop="title">
          <el-input size="small" v-model="editForm.title" auto-complete="off" placeholder="请输入文章的名称"></el-input>
        </el-form-item>
        <el-form-item label="文章的内容" prop="body">
          <el-input size="small" v-model="editForm.body" auto-complete="off" placeholder="请输入文章的内容"></el-input>
        </el-form-item>
      </el-form>
      <div slot="footer" class="dialog-footer">
        <el-button size="small" @click="closeDialog">取消</el-button>
        <el-button size="small" type="primary" class="title" @click="submitForm('editForm')">保存
        </el-button>
      </div>
    </el-dialog>
  </div>
</template>

<script>
  export default {
    name: 'Articles',
    data() {
      return {
        listData: [],
        formInline: {
          page: 1,
          rows: 10,
          total: 0,
          title: ''
        },
        editForm: {
          id: 0,
          title: '',
          body: ''
        },
        editFormVisible: false,
        title: '',
        rules: {
          title: [{
              required: true,
              message: '请输入文章标题',
              trigger: 'blur'
            },
            {
              min: 3,
              max: 5,
              message: '文章标题长度长度在 3 到 5 个字符',
              trigger: 'blur'
            }
          ],
          body: [{
            required: true,
            message: '请输入文章内容',
            trigger: 'blur'
          }]
        }
      };
    },
    methods: {
      handleSizeChange(rows) {
        console.log("当前页查询数据量：" + rows)
        this.formInline.page = 1;
        this.formInline.rows = rows;
        this.search();
      },
      handleCurrentChange(page) {
        console.log("当前页为：" + page)
        this.formInline.page = page;
        this.search();
      },
      clearData() {
        this.editFormVisible = false;
        this.title = '';
        this.editForm.id = 0;
        this.editForm.title = '';
        this.editForm.body = '';
      },
      doSearch(param) {
        let url = this.axios.urls.SYSTEM_ARTICLE_LIST;
        this.axios.post(url, param).then((resp) => {
          console.log(resp);
          this.listData = resp.data.result;
          this.formInline.total = resp.data.pageBean.total;
        }).catch(function(error) {
          console.log(error);
        });
        //箭头函数解决了this指针污染问题
        this.$root.Bus.$on("collapsed-aside", (v) => {
          this.collapsed = v;
        });
      },
      search() {
        this.doSearch(this.formInline);
      },
      closeDialog() {
        this.clearData();
      },
      handleEdit(index, row) {
        this.clearData();
        this.editFormVisible = true;
        //console.log(row);
        if (row) {
          this.title = '编辑窗口';
          this.editForm.id = row.id;
          this.editForm.title = row.title;
          this.editForm.body = row.body;
        } else {
          this.title = '新增窗口';
        }
      },
      deleteUser(index, row) {
        console.log(row)
        this.editForm.id = row.id;
        let url = this.axios.urls.SYSTEM_ARTICLE_DEL;
        this.axios.post(url, this.editForm).then((resp) => {
          console.log(resp);
          this.clearData();
          this.search();
        }).catch(function(error) {
          console.log(error);
        });
      },
      submitForm(formName) {
        this.$refs[formName].validate((valid) => {
          if (valid) {
            let url;
            if (this.editForm.id == 0) {
              url = this.axios.urls.SYSTEM_ARTICLE_ADD;
            } else {
              url = this.axios.urls.SYSTEM_ARTICLE_EDIT;
            }
            this.axios.post(url, this.editForm).then((resp) => {
              console.log(resp);
              this.clearData();
              this.search();
            }).catch(function(error) {
              console.log(error);
            });
          } else {
            console.log('error submit!!');
            return false;
          }
        });
      },
      handleAdd() {
        this.editFormVisible = true;
        this.title = "新增文章"
      }
    },
    created() {
      this.doSearch({});
    }
  }
</script>

<style>
</style>

二、增删改功能实现

①导入相关组件

<template>
  <div>
    <!-- 这是文章列表组件 -->
    <!-- 搜索筛选 -->
    <el-form :inline="true" :model="formInline" class="user-search">
      <el-form-item label="搜索：">
        <el-input size="small" v-model="formInline.title" placeholder="文章标题"></el-input>
      </el-form-item>
      <el-form-item>
        <el-button size="small" type="primary" icon="el-icon-search" @click="search">搜索</el-button>
        <el-button size="small" type="primary" icon="el-icon-plus" @click=" handleEdit()">添加</el-button>
      </el-form-item>
    </el-form>
    <!--列表-->
    <el-table size="small" :data="listData" highlight-current-row border element-loading-text="拼命加载中"
      style="width: 100%;">
      <el-table-column align="center" type="selection" width="60">
      </el-table-column>
      <el-table-column sortable prop="id" label="文章ID" width="300">
      </el-table-column>
      <el-table-column sortable prop="title" label="文章标题" width="300">
      </el-table-column>
      <el-table-column sortable prop="body" label="文章内容" width="300">
      </el-table-column>
      <el-table-column align="center" label="操作" min-width="300">
        <template slot-scope="scope">
          <el-button size="mini" @click="handleEdit(scope.$index, scope.row)">编辑</el-button>
          <el-button size="mini" type="danger" @click="deleteUser(scope.$index, scope.row)">删除</el-button>
        </template>
      </el-table-column>
    </el-table>
    <!-- 分页条 -->
    <el-pagination style="margin-top: 20px;" @size-change="handleSizeChange" @current-change="handleCurrentChange"
      :current-page="formInline.page" :page-sizes="[10, 20, 30, 50]" :page-size="100"
      layout="total, sizes, prev, pager, next, jumper" :total="formInline.total">
    </el-pagination>
    <!-- 编辑界面 -->
    <el-dialog :title="title" :visible.sync="editFormVisible" width="30%" @click="closeDialog">
      <el-form label-width="120px" :model="editForm" :rules="rules" ref="editForm">
        <el-form-item label="文章标题" prop="title">
          <el-input size="small" v-model="editForm.title" auto-complete="off" placeholder="请输入文章标题"></el-input>
        </el-form-item>
        <el-form-item label="文章内容" prop="body">
          <el-input size="small" v-model="editForm.body" auto-complete="off" placeholder="请输入文章内容"></el-input>
        </el-form-item>
      </el-form>
      <div slot="footer" class="dialog-footer">
        <el-button size="small" @click="closeDialog">取消</el-button>
        <el-button size="small" type="primary" class="title" @click="submitForm('editForm')">保存</el-button>
      </div>
    </el-dialog>
  </div>
</template>

②新增&&修改

1.根据id判断是新增还是修改

 // 清空
      clearData() {
        this.editFormVisible = false;
        this.title = ''
        this.editForm.id = 0;
        this.editForm.title = '';
        this.editForm.body = '';
      },
      // 关闭窗口
      closeDialog() {
        this.clearData();
      },
      handleEdit(index, row) {
        this.clearData();
        this.editFormVisible = true;
        if (row) {
          this.title = '编辑窗口'
          this.editForm.id = row.id;
          this.editForm.title = row.title;
          this.editForm.body = row.body;
        } else {
          this.title = '新增窗口'
 
        }
      }

2.前后端数据交互

 submitForm(formName) {
        this.$refs[formName].validate((valid) => {
          if (valid) {
            if(valid){
              let url;
              if(this.editForm.id==0){
                url=this.axios.urls.SYSTEM_ARTICLE_ADD;
              }else{
                url=this.axios.urls.SYSTEM_ARTICLE_EDIT;
              }
              this.axios.post(url, this.editForm).then((resp) => {
                console.log(resp);
                this.clearData();
                this.search();
              }).catch(function(error) {
                console.log(error);
              });
            }
          } else {
            console.log('error submit!!');
            return false;
          }
        });
      },

3.删除

deleteUser(index,row){
        this.editForm.id=row.id;
       let url=this.axios.urls.SYSTEM_ARTICLE_DEL;
        this.axios.post(url, this.editForm).then((resp) => {
          console.log(resp);
          this.clearData();
          this.search();
        }).catch(function(error) {
          console.log(error);
        });