不灭的火

行/列合并

设置属性span-method可以指定合并行或列的算法。

该方法参数为 4 个对象：

1. row: 当前行
2. column: 当前列
3. rowIndex: 当前行索引
4. columnIndex: 当前列索引

该函数可以返回一个包含两个元素的数组，第一个元素代表 rowspan，第二个元素代表 colspan。 也可以返回一个键名为 rowspan 和 colspan 的对象。

官方文档并未说明rowspan、colspan

这里说明一下：

• rowspan=0：隐藏该行
• rowspan=1：显示该行
• rowspan大于1的话：代表合并的行数
• colspan和rowspan 一样的 行换成列

Element官网 表格Demo：

https://element.eleme.cn/#/zh-CN/component/table

<template>
  <div>
    <el-table
      :data="tableData"
      :span-method="arraySpanMethod"
      border
      style="width: 100%">
      <el-table-column
        prop="id"
        label="ID"
        width="180">
      </el-table-column>
      <el-table-column
        prop="name"
        label="姓名">
      </el-table-column>
      <el-table-column
        prop="amount1"
        sortable
        label="数值 1">
      </el-table-column>
      <el-table-column
        prop="amount2"
        sortable
        label="数值 2">
      </el-table-column>
      <el-table-column
        prop="amount3"
        sortable
        label="数值 3">
      </el-table-column>
    </el-table>

    <el-table
      :data="tableData"
      :span-method="objectSpanMethod"
      border
      style="width: 100%; margin-top: 20px">
      <el-table-column
        prop="id"
        label="ID"
        width="180">
      </el-table-column>
      <el-table-column
        prop="name"
        label="姓名">
      </el-table-column>
      <el-table-column
        prop="amount1"
        label="数值 1（元）">
      </el-table-column>
      <el-table-column
        prop="amount2"
        label="数值 2（元）">
      </el-table-column>
      <el-table-column
        prop="amount3"
        label="数值 3（元）">
      </el-table-column>
    </el-table>
  </div>
</template>

<script>
  export default {
    data() {
      return {
        tableData: [{
          id: '12987122',
          name: '王小虎',
          amount1: '234',
          amount2: '3.2',
          amount3: 10
        }, {
          id: '12987123',
          name: '王小虎',
          amount1: '165',
          amount2: '4.43',
          amount3: 12
        }, {
          id: '12987124',
          name: '王小虎',
          amount1: '324',
          amount2: '1.9',
          amount3: 9
        }, {
          id: '12987125',
          name: '王小虎',
          amount1: '621',
          amount2: '2.2',
          amount3: 17
        }, {
          id: '12987126',
          name: '王小虎',
          amount1: '539',
          amount2: '4.1',
          amount3: 15
        }]
      };
    },
    methods: {
      arraySpanMethod({ row, column, rowIndex, columnIndex }) {
        if (rowIndex % 2 === 0) {
          if (columnIndex === 0) {
            return [1, 2];
          } else if (columnIndex === 1) {
            return [0, 0];
          }
        }
      },

      objectSpanMethod({ row, column, rowIndex, columnIndex }) {
        if (columnIndex === 0) {
          if (rowIndex % 2 === 0) {
            return {
              rowspan: 2,
              colspan: 1
            };
          } else {
            return {
              rowspan: 0,
              colspan: 0
            };
          }
        }
      }
    }
  };
</script>

与后端Java接口配合，控制单元格合并

(1) 前端Vue脚本

<template>
  <div>
    <el-table
      :data="tableData"
      :span-method="objectSpanMethod"
      border
      style="width: 100%; margin-top: 20px">
      <el-table-column
        prop="id"
        label="ID"
        width="180">
      </el-table-column>
      <el-table-column
        prop="name"
        label="姓名">
      </el-table-column>
      <el-table-column
        prop="amount1"
        label="数值 1（元）">
      </el-table-column>
      <el-table-column
        prop="amount2"
        label="数值 2（元）">
      </el-table-column>
      <el-table-column
        prop="amount3"
        label="数值 3（元）">
      </el-table-column>
    </el-table>
  </div>
</template>

<script>
  export default {
    data() {
      return {
        tableData: []
      };
    },
    methods: {
      objectSpanMethod({ row, column, rowIndex, columnIndex }) {
        console.log("++++++++++++++++++++++++");
        console.log("[rowIndex]", rowIndex);
        console.log("[columnIndex]", columnIndex);
        console.log("[row]", row);
        console.log("[column]", column);
        console.log("////////////////////////");

        if (row['_cellMerge']) {
            // 列名
            let columnName = column['property']
            if (row['_cellMerge'][columnName]) {
              let obj =  {
                rowspan: (row['_cellMerge'][columnName]['_rowspan']),
                colspan: (row['_cellMerge'][columnName]['_colspan'])
              }
              console.log(obj)
              return obj
            }
        } 
       
      },
      queryData(){
        // 请求http接口 
        const res = await api_get_data("http://127.0.0.1:8080/clearanceList/page_albert");

        console.log('【Api返回数据】')
        console.log(res.data)

        this.tableData = res.data
      }
    }
  };
</script>

(2)后端Api：

/**
 * 报关清单
 */
@RestController
@RequestMapping("/clearanceList")
public class ClearanceListController {
    @AnonymousAccess
    @RequestMapping("/page_albert")
    @SystemLog("【测试】查询报关清单列表_albert")
    public String page_albert() {
        return """
            {
              "code": 200,
              "msg": "success",
              "data": [
                {
                  "id": "12987122",
                  "name": "王小虎",
                  "amount1": "234",
                  "amount2": "3.2",
                  "amount3": 10,
                  "_cellMerge": {
                    "id" : {
                        "_rowspan": 2,
                        "_colspan": 1
                    }
                  }
                },
                {
                  "id": "12987123",
                  "name": "王小虎",
                  "amount1": "165",
                  "amount2": "4.43",
                  "amount3": 12,
                  "_cellMerge": {
                    "id" : {
                        "_rowspan": 0,
                        "_colspan": 0
                    }
                  }
                },
                {
                  "id": "12987124",
                  "name": "王小虎",
                  "amount1": "324",
                  "amount2": "1.9",
                  "amount3": 9,
                  "_cellMerge": {
                    "amount1" : {
                        "_rowspan": 2,
                        "_colspan": 1
                    }
                  }
                },
                {
                  "id": "12987125",
                  "name": "王小虎",
                  "amount1": "621",
                  "amount2": "2.2",
                  "amount3": 17,
                  "_cellMerge": {
                    "amount1" : {
                        "_rowspan": 0,
                        "_colspan": 0
                    }
                  }
                },
                {
                  "id": "12987126",
                  "name": "王小虎",
                  "amount1": "539",
                  "amount2": "4.1",
                  "amount3": 15
                }
              ]
            }
            """;
    }
}