[Node]Cannot set headers after they are sent to the client

[Node]Cannot set headers after they are sent to the client

目录

• 背景
• 操作

背景

npm start 后
Cannot set headers after they are sent to the client

操作

1. 写了两个res.send()，删除一个就好
2. 原code

ArticleCates = (req, res) => {const sql = 'select * from ev_article_cate where is_delete=0 order by id asc'db.query(sql, (err, results) => {if (err) return res(err)res.send({status: 0,message: '获取文章分类列表成功!',data: results,})})res.send('ok')
}

4. 修改后的code

ArticleCates = (req, res) => {const sql = 'select * from ev_article_cate where is_delete=0 order by id asc'db.query(sql, (err, results) => {if (err) return res(err)res.send({status: 0,message: '获取文章分类列表成功!',data: results,})})
}