tableData数据：
tableData: [
{ column1: '值1-1', column2: '值1-2' },
{ column1: '值2-1', column2: '值2-2' },
{ column1: '值3-1', column2: '值3-2' }
],
exportToCSV() {
// 将表格数据转化为CSV格式
const csvContent = this.convertArrayOfObjectsToCSV(this.tableData);
// 创建下载链接，用于下载生成的CSV文件
const blob = new Blob([csvContent], { type: 'text/csv;charset=utf-8;' });
const link = document.createElement('a');
if (link.download !== undefined) {
const url = URL.createObjectURL(blob);
link.setAttribute('href', url);
link.setAttribute('download', 'data.csv');
link.style.visibility = 'hidden';
document.body.appendChild(link);
link.click();
document.body.removeChild(link);
}
},
convertArrayOfObjectsToCSV(data) {
const csvRows = [];
const headers = Object.keys(data[0]);
console.log('headers',headers);
// 添加表头
csvRows.push(headers.join(','));
// 添加表格数据
for (const row of data) {
const values = headers.map(header => {
const escapeQuotes = row[header]
return `"${escapeQuotes}"`;
});
csvRows.push(values.join(','));
}
// 返回CSV内容
return csvRows.join('\n');
},结果如下：
如果想要将表头替换为文字，可以重新遍历循环tableData，例如将【column1】转化为【第一列】
exportToCSV() {
// 将表格数据转化为CSV格式
const keyMapping = {
column1: '第一列',
}
const modifiedTableData =[]
this.tableDatas.map(obj => {
const modifiedObj = {};
for (let key in obj) {
if (keyMapping.hasOwnProperty(key)) {
const newKey = keyMapping[key];
modifiedObj[newKey] = obj[key];
} else {
modifiedObj[key] = obj[key];
}
}
modifiedTableData.push(modifiedObj)
});
const csvContent = this.convertArrayOfObjectsToCSV(modifiedTableData);
// 创建下载链接，用于下载生成的CSV文件
const blob = new Blob([csvContent], { type: 'text/csv;charset=utf-8;' });
const link = document.createElement('a');
if (link.download !== undefined) {
const url = URL.createObjectURL(blob);
link.setAttribute('href', url);
link.setAttribute('download', 'data.csv');
link.style.visibility = 'hidden';
document.body.appendChild(link);
link.click();
document.body.removeChild(link);
}
},
convertArrayOfObjectsToCSV(data) {
const csvRows = [];
const headers = Object.keys(data[0]);
console.log('headers',headers);
// 添加表头
csvRows.push(headers.join(','));
// 添加表格数据
for (const row of data) {
const values = headers.map(header => {
const escapeQuotes = row[header]
return `"${escapeQuotes}"`;
});
csvRows.push(values.join(','));
}
// 返回CSV内容
return csvRows.join('\n');
},效果图：
方法二：
使用json2csv 插件
npm install json2csv引入到页面
import json2csv from 'json2csv'
使用: 将 modifiedTableData 替换成自己的table表格数据即可
downLoadList = [ { "info_sql": "", "error_key": "[214002]", "reason": null, "row_index": 1, "role_id": "37974710003", "type": "false" }, { "info_sql": "", "error_key": "[214002]", "reason": null, "row_index": 2, "role_id": "901610410087", "type": "false" }, { "info_sql": "", "error_key": "[214002]", "reason": null, "row_index": 3, "role_id": "13905284310012", "type": "false" }, { "info_sql": "", "error_key": "[214002]", "reason": null, "row_index": 4, "role_id": "880304610074", "type": "false" }, { "info_sql": "", "error_key": "[214002]", "reason": null, "row_index": 5, "role_id": "6801495710100", "type": "false" }, { "info_sql": "", "error_key": "[214002]", "reason": null, "row_index": 6, "role_id": "1270134610085", "type": "false" }, { "info_sql": "", "error_key": "[214002]", "reason": null, "row_index": 7, "role_id": "20562212610019", "type": "false" }, { "info_sql": "", "error_key": "[214002]", "reason": null, "row_index": 8, "role_id": "62620815003", "type": "false" }, { "info_sql": "", "error_key": "[214002]", "reason": null, "row_index": 9, "role_id": "20562307510100", "type": "false" }, { "info_sql": "", "error_key": "[214002]", "reason": null, "row_index": 10, "role_id": "6720994815049", "type": "false" }, { "info_sql": "", "error_key": "[214002]", "reason": null, "row_index": 11, "role_id": "904776310079", "type": "false" }, { "info_sql": "", "error_key": "[214002]", "reason": null, "row_index": 12, "role_id": "459012010070", "type": "false" }, { "info_sql": "", "error_key": "[214002]", "reason": null, "row_index": 13, "role_id": "8005578310049", "type": "false" }, { "info_sql": "", "error_key": "[214002]", "reason": null, "row_index": 14, "role_id": "7197854010103", "type": "false" }, { "info_sql": "", "error_key": "[214002]", "reason": null, "row_index": 15, "role_id": "7168183615042", "type": "false" }, { "info_sql": "", "error_key": "[214002]", "reason": null, "row_index": 16, "role_id": "7589462510011", "type": "false" }, { "info_sql": "", "error_key": "[214002]", "reason": null, "row_index": 17, "role_id": "21012727610067", "type": "false" }, { "info_sql": "", "error_key": "[214002]", "reason": null, "row_index": 18, "role_id": "13489399910050", "type": "false" }, { "info_sql": "", "error_key": "[214002]", "reason": null, "row_index": 19, "role_id": "13854480410040", "type": "false" }, { "info_sql": "", "error_key": "[214002]", "reason": null, "row_index": 20, "role_id": "10089315001", "type": "false" }, { "info_sql": "", "error_key": "[214002]", "reason": null, "row_index": 21, "role_id": "65930410095", "type": "false" }, { "info_sql": "", "error_key": "[214002]", "reason": null, "row_index": 22, "role_id": "876720810048", "type": "false" }, { "info_sql": "", "error_key": "[214002]", "reason": -1, "row_index": 0, "role_id": "875358210085", "type": "false" } ] exportToCSV() { // 转化错误原因 //downLoadList.map(item => { // this.reasonList.map(val => { // if(item.reason === val.id) { // item.reason = val.reason //} //}) //}) // 将对应的key值转化为文字 const keyMapping = { row_index: '报错序号', reason: '报错原因', abnormal_mark:'异常检测标记', threshold:'异常阈值标记', sql:'查询sql语句' } const modifiedTableData =[] downLoadList.map(obj => { const modifiedObj = {}; for (let key in obj) { if (keyMapping.hasOwnProperty(key)) { const newKey = keyMapping[key]; modifiedObj[newKey] = obj[key]; } else { modifiedObj[key] = obj[key]; } } modifiedTableData.push(modifiedObj) }); let list = modifiedTableData[0] const fields = Object.keys(list) // 与表格列定义一致，用于设置表头 const csvData = json2csv.parse( modifiedTableData, { fields }); // 将 el-table 数据转换为 CSV 字符串 const blob = new Blob([csvData], { type: 'text/csv;charset=utf-8;' }); // 创建Blob对象 const url = URL.createObjectURL(blob); // 创建 Blob URL const link = document.createElement('a'); // 创建下载链接 link.href = url; link.setAttribute('download', '执行结果.csv'); // 设置文件名 document.body.appendChild(link); link.click(); document.body.removeChild(link); // 移除下载链接 URL.revokeObjectURL(url); // 释放 Blob URL },