Discord机器人出现DiscordAPIError[50035]报错，求排查解决

错误信息 #

DiscordAPIError[50035]: Invalid Form Body
0.name[BASE_TYPE_REQUIRED]: This field is required
at SequentialHandler.runRequest (C:\Users\Admin\Desktop\bot\node_modules@discordjs\rest\dist\lib\handlers\SequentialHandler.cjs:287:15)
at processTicksAndRejections (node:internal/process/task_queues:96:5)
at async SequentialHandler.queueRequest (C:\Users\Admin\Desktop\bot\node_modules@discordjs\rest\dist\lib\handlers\SequentialHandler.cjs:99:14)
at async REST.request (C:\Users\Admin\Desktop\bot\node_modules@discordjs\rest\dist\lib\REST.cjs:52:22)
at async Client.client.handleCommands (C:\Users\Admin\Desktop\bot\src\functions\handlers\handleCommands.js:28:9) {
rawError: {
code: 50035,
errors: { '0': [Object] },
message: 'Invalid Form Body'
},
code: 50035,
status: 400,
method: 'PUT',
url: 'https://discord.com/api/v9/applications/1009341661572243516/guilds/688019305299706004/commands',
requestBody: { files: undefined, json: [ [Object], [Object] ] }
}

问题代码 #

命令处理文件（handleCommands.js） #

const { Routes } = require('discord-api-types/v9');
const fs = require('fs');

module.exports = (client) => {
  client.handleCommands = async () => {
    const commandFolders = fs.readdirSync('./src/commands');
    for (const folder of commandFolders) {
      const commandFiles = fs
        .readdirSync(`./src/commands/${folder}`)
        .filter((file) => file.endsWith('.js'));

      const { commands, commandArray } = client;
      for (const file of commandFiles) {
        const command = require(`../../commands/${folder}/${file}`);
        client.commands.set(command.data.name, command);
        commandArray.push(command, command.data.toJSON());
      }
    }

    const clientId = '1009341661572243516';
    const guildId = '688019305299706004';
    const rest = new REST({ version: '9' }).setToken(process.env.token);
    try {
      console.log('Started refreshing application (/) commands.');

      await rest.put(Routes.applicationGuildCommands(clientId, guildId), {
        body: client.commandArray,
      });
      console.log('Successfully reloaded application(/) commands.');
    } catch (error) {
      console.error(error);
    }
  };
};

示例命令文件（ping.js） #

module.exports = {
  data: new SlashCommandBuilder()
    .setName("ping")
    .setDescription("Returns a ping"),
  async execute(interaction, client) {
    const message = await interaction.deferReply({
      fetchReply: true,
    });

    const newMessage = `API Latency: ${client.ws.ping}\n Client Ping: ${
      message.createdTimestamp - interaction.createdTimestamp
    }`;

    await interaction.reply({
      content: newMessage,
    });
  },
};

错误原因 #

问题出在handleCommands.js的这段代码：

commandArray.push(command, command.data.toJSON());

这里一次向commandArray中推入了两个元素：

1. 第一个是完整的command对象（包含data配置和execute执行方法），这个对象不符合Discord API要求的命令结构，缺少API必填的顶层name字段。
2. 第二个是正确的command.data.toJSON()结果，即Slash命令的标准JSON格式。

当调用rest.put提交命令时，API解析数组第一个元素时发现结构无效，于是抛出0.name[BASE_TYPE_REQUIRED]错误。

解决方法 #

修改handleCommands.js中的推入逻辑，只将命令的标准JSON格式数据加入commandArray：

// 替换原push语句
commandArray.push(command.data.toJSON());

修改后commandArray中只会包含Discord API可识别的命令结构，即可正常完成命令刷新。

内容的提问来源于stack exchange，提问作者Harshita