效果图：

数据处理前：

 数据处理后：

代码实现： 

HTML:

<el-table height="600" :data="tableData" border style="width: 100%" tooltip-effect="dark" size="mini"><el-table-column fixed prop="date" label="序号" align="center" width="50"></el-table-column><el-table-column prop="username" label="登录名" align="center" width="150"></el-table-column><el-table-column prop="name" label="姓名" align="center" width="150"></el-table-column><el-table-column prop="requestAddress" label="请求地址" align="center" width="350"></el-table-column><el-table-column prop="enteringGinseng" label="入参"><template slot-scope="{row}"><template v-if="Array.isArray(row.enteringGinseng)"><div>{{`{`}}</div><div class="text_json" v-for="(item,index) in row.enteringGinseng" :key="index">{{item?`${item},`:''}}</div><div>{{`}`}}</div></template><template v-else>{{row.enteringGinseng}}</template></template></el-table-column><el-table-column prop="requestTime" label="请求时间" align="center" width="200"></el-table-column><el-table-column label="操作" align="center" width="150"><template slot-scope="scope"><el-button type="text" size="small">删除</el-button></template></el-table-column>
</el-table>

js:

this.tableData.forEach(n => {n.enteringGinseng = this.setObjorStr(n.enteringGinseng)
})

setObjorStr(obj) {let arr = [] //返回一个数组let row = '' //组成数组的参数let objStr = '' //转化key对应的Value是对象{}的情况let arrObj = '' //转化key对应的Value是数组[]里面是对象{}的情况for (let i in obj) {if (typeof obj[i] === 'object') { // 变量是对象类型if (Array.isArray(obj[i])) { // 变量是数组类型obj[i].forEach(_ => {if (typeof _ === 'object') {if (Array.isArray(_)) {_ = JSON.stringify(_)} else {arrObj = this.setObjorStr(_)_ = `{${arrObj}}`}}})row = `${i} : ${obj[i]}`} else {objStr = this.setObjorStr(obj[i])row = `${i} : {${objStr}}`}} else {row = `${i} : ${JSON.stringify(obj[i])}`}arr.push(row)}return arr
},