Question

我在我的javascript代码中使用sqlite作为数据库，无论我尝试什么，它总是在那里保留这个错误：

sql.get(`SELECT * FROM users WHERE userId ="${member.user.id}"`).then(row => {
          if (!row) sql.run("INSERT INTO users (userId, level, exp) VALUES (?, ?, ?)", [member.user.id, 1, 0]);
          var profile = new Discord.RichEmbed()
          .setColor(0x0000FF)
          .setTitle(member.user.username + "'s profile")
          .setThumbnail(member.user.avatarURL)
          .setDescription("Status: " + member.user.presence.status)
          .addField("Stats","**Level** " + row.level+"\n"+row.exp+"/"+row.level*10)
          msg.reply("here is "+member.user.username+"'s profile:",{embed:profile});
        })

如果你没有像'msg.reply'那样低估一些，那是因为那些是我的不和谐机器人的命令。

Answer 1

看起来您的对象行未定义。

将所有代码包装在其他大括号内：

sql.get(`SELECT * FROM users WHERE userId ="${member.user.id}"`).then(row => {
      if (!row) 
        sql.run("INSERT INTO users (userId, level, exp) VALUES (?, ?, ?)", [member.user.id, 1, 0]);
      else {
        var profile = new Discord.RichEmbed()
          .setColor(0x0000FF)
          .setTitle(member.user.username + "'s profile")
          .setThumbnail(member.user.avatarURL)
          .setDescription("Status: " + member.user.presence.status)
          .addField("Stats","**Level** " + row.level+"\n"+row.exp+"/"+row.level*10)
        msg.reply("here is "+member.user.username+"'s profile:",{embed:profile});
    }
})

Answer 2

在您的代码中，如果行不存在则插入行，但始终对其进行处理。如果没有定义，那么你应该插入它，然后再次获取行，现在可以处理它。

试试这个，

  sql.get(`SELECT * FROM users WHERE userId ="${member.user.id}"`).then(row => {
    if(row) {
           reply(row, member);
    } else {
    sql.run("INSERT INTO users (userId, level, exp) VALUES (?, ?, ?)", [member.user.id, 1, 0]).then(row => {
            reply(row, member);
    })
    }
  })

  const reply = (row, member) => {
               var profile = new Discord.RichEmbed()
          .setColor(0x0000FF)
          .setTitle(member.user.username + "'s profile")
          .setThumbnail(member.user.avatarURL)
          .setDescription("Status: " + member.user.presence.status)
          .addField("Stats","**Level** " + row.level+"\n"+row.exp+"/"+row.level*10)
          msg.reply("here is "+member.user.username+"'s profile:",{embed:profile});
  }

TypeError：无法读取undefined的属性'exp'

2 个答案: