# 用户进入与机器人的会话

用户进入与机器人的会话时触发此事件。

## 前提条件

- 应用需要开启[机器人能力](https://open.feishu.cn/document/uAjLw4CM/ugTN1YjL4UTN24CO1UjN/trouble-shooting/how-to-enable-bot-ability)。
- 你需要在应用中配置事件订阅，这样才可以在事件触发时接收到事件数据。了解事件订阅可参见[事件订阅概述](https://open.feishu.cn/document/ukTMukTMukTM/uUTNz4SN1MjL1UzM)。

## 使用限制

- 用户使用的客户端版本需要在**v7.18**及以上。
- 单个机器人推送事件频率超过 300 每秒时，事件会被丢弃。

## 事件

基本 |  
---|---
事件类型 | im.chat.access_event.bot_p2p_chat_entered_v1
支持的应用类型 | Custom App
权限要求<br>**订阅该事件所需的权限，开启其中任意一项权限即可订阅** | 无
字段权限要求 | **注意事项**：该接口返回体中存在下列敏感字段，仅当开启对应的权限后才会返回；如果无需获取这些字段，则不建议申请<br>获取用户 user ID(contact:user.employee_id:readonly)
推送方式 | [Webhook](https://open.feishu.cn/document/ukTMukTMukTM/uUTNz4SN1MjL1UzM)

### 事件体

名称 | 类型 | 描述
---|---|---
schema | string | 事件模式
header | event_header | 事件头
event_id | string | 事件 ID
event_type | string | 事件类型
create_time | string | 事件创建时间戳（单位：毫秒）
token | string | 事件 Token
app_id | string | 应用 ID
tenant_key | string | 租户 Key
event | \- | \-
chat_id | string | 会话 ID，详情参见[群 ID 说明](https://open.feishu.cn/document/uAjLw4CM/ukTMukTMukTM/reference/im-v1/chat-id-description)。
operator_id | user_id | 操作者的 ID。用户不同 ID 类型介绍参考[用户身份概述](https://open.feishu.cn/document/home/user-identity-introduction/introduction)。
union_id | string | 用户的 union id
user_id | string | 用户的 user id<br>**字段权限要求**：<br>获取用户 user ID(contact:user.employee_id:readonly)
open_id | string | 用户的 open id
last_message_id | string | 会话内用户可见的最新消息 ID，可通过[获取指定消息的内容](https://open.feishu.cn/document/uAjLw4CM/ukTMukTMukTM/reference/im-v1/message/get)接口获取消息内容。
last_message_create_time | string | 会话内用户可见的最新消息发送时间（毫秒时间戳）

### 事件体示例
```json
{
    "schema": "2.0",
    "header": {
        "event_id": "5e3702a84e847582be8db7fb73283c02",
        "event_type": "im.chat.access_event.bot_p2p_chat_entered_v1",
        "create_time": "1608725989000",
        "token": "rvaYgkND1GOiu5MM0E1rncYC6PLtF7JV",
        "app_id": "cli_9f5343c580712544",
        "tenant_key": "2ca1d211f64f6438"
    },
    "event": {
        "chat_id": "oc_413871888e0d5492e25b173f0812efb7",
        "operator_id": {
            "union_id": "on_8ed6aa67826108097d9ee143816345",
            "user_id": "e33ggbyz",
            "open_id": "ou_84aad35d084aa403a838cf73ee18467"
        },
        "last_message_id": "om_dc13264520392913993dd051dba21dcf",
        "last_message_create_time": "1615380573411"
    }
}
```

### 事件订阅示例代码

事件订阅流程可参考：[事件订阅概述](https://open.feishu.cn/document/ukTMukTMukTM/uUTNz4SN1MjL1UzM)，新手入门可参考：[教程](https://open.feishu.cn/document/uAjLw4CM/uMzNwEjLzcDMx4yM3ATM/develop-an-echo-bot/introduction)

**

package main

import (
	"context"
	"fmt"

larkcore "github.com/larksuite/oapi-sdk-go/v3/core"
	larkevent "github.com/larksuite/oapi-sdk-go/v3/event"
	"github.com/larksuite/oapi-sdk-go/v3/event/dispatcher"
	"github.com/larksuite/oapi-sdk-go/v3/service/im/v1"
	larkws "github.com/larksuite/oapi-sdk-go/v3/ws"
)

// SDK 使用说明 SDK user guide：https://open.feishu.cn/document/uAjLw4CM/ukTMukTMukTM/server-side-sdk/golang-sdk-guide/preparations
func main() {
	// 注册事件 Register event
	eventHandler := dispatcher.NewEventDispatcher("", "").
		OnP2ChatAccessEventBotP2pChatEnteredV1(func(ctx context.Context, event *larkim.P2ChatAccessEventBotP2pChatEnteredV1) error {
			fmt.Printf("[ OnP2ChatAccessEventBotP2pChatEnteredV1 access ], data: %s\n", larkcore.Prettify(event))
			return nil
		})

// 构建 client Build client
	cli := larkws.NewClient("YOUR_APP_ID", "YOUR_APP_SECRET",
		larkws.WithEventHandler(eventHandler),
		larkws.WithLogLevel(larkcore.LogLevelDebug),
	)

// 建立长连接 Establish persistent connection
	err := cli.Start(context.Background())

if err != nil {
		panic(err)
	}
}

# SDK 使用说明 SDK user guide：https://open.feishu.cn/document/uAjLw4CM/ukTMukTMukTM/server-side-sdk/python--sdk/preparations-before-development
import lark_oapi as lark

def do_p2_im_chat_access_event_bot_p2p_chat_entered_v1(data: lark.im.v1.P2ImChatAccessEventBotP2pChatEnteredV1) -> None:
    print(f'[ do_p2_im_chat_access_event_bot_p2p_chat_entered_v1 access ], data: {lark.JSON.marshal(data, indent=4)}')

# 注册事件 Register event
event_handler = lark.EventDispatcherHandler.builder("", "") \
    .register_p2_im_chat_access_event_bot_p2p_chat_entered_v1(do_p2_im_chat_access_event_bot_p2p_chat_entered_v1) \
    .build()

def main():
    # 构建 client Build client
    cli = lark.ws.Client("APP_ID", "APP_SECRET",
                        event_handler=event_handler, log_level=lark.LogLevel.DEBUG)
    # 建立长连接 Establish persistent connection
    cli.start()

if __name__ == "__main__":
    main()

package com.example.sample;

import com.lark.oapi.core.utils.Jsons;
import com.lark.oapi.service.im.ImService;
import com.lark.oapi.service.im.v1.model.P2ChatAccessEventBotP2pChatEnteredV1;
import com.lark.oapi.event.EventDispatcher;
import com.lark.oapi.ws.Client;

// SDK 使用说明 SDK user guide：https://open.feishu.cn/document/uAjLw4CM/ukTMukTMukTM/server-side-sdk/java-sdk-guide/preparations
public class Sample {
    // 注册事件 Register event
    private static final EventDispatcher EVENT_HANDLER = EventDispatcher.newBuilder("", "")
            .onP2ChatAccessEventBotP2pChatEnteredV1(new ImService.P2ChatAccessEventBotP2pChatEnteredV1Handler() {
                @Override
                public void handle(P2ChatAccessEventBotP2pChatEnteredV1 event) throws Exception {
                    System.out.printf("[ onP2ChatAccessEventBotP2pChatEnteredV1 access ], data: %s\n", Jsons.DEFAULT.toJson(event.getEvent()));
                }
            })
            .build();

public static void main(String[] args) {
        // 构建 client Build client
        Client client = new Client.Builder("APP_ID", "APP_SECRET")
                .eventHandler(EVENT_HANDLER)
                .build();
        // 建立长连接 Establish persistent connection
        client.start();
    }
}

// SDK 使用说明 SDK user guide：https://open.feishu.cn/document/uAjLw4CM/ukTMukTMukTM/server-side-sdk/nodejs-sdk/preparation-before-development
import * as Lark from '@larksuiteoapi/node-sdk';
const baseConfig = {
    appId: 'APP_ID',
    appSecret: 'APP_SECRET'
}
// 构建 client Build client
const wsClient = new Lark.WSClient(baseConfig);
// 建立长连接 Establish persistent connection
wsClient.start({
    // 注册事件 Register event
    eventDispatcher: new Lark.EventDispatcher({}).register({
        'im.chat.access_event.bot_p2p_chat_entered_v1': async (data) => {
            console.log(data);
        }
    })
});

package main

import (
	"context"
	"fmt"
	"net/http"

larkcore "github.com/larksuite/oapi-sdk-go/v3/core"
	"github.com/larksuite/oapi-sdk-go/v3/core/httpserverext"
	larkevent "github.com/larksuite/oapi-sdk-go/v3/event"
	"github.com/larksuite/oapi-sdk-go/v3/event/dispatcher"
	"github.com/larksuite/oapi-sdk-go/v3/service/im/v1"
)

// SDK 使用说明 SDK user guide：https://open.feishu.cn/document/uAjLw4CM/ukTMukTMukTM/server-side-sdk/golang-sdk-guide/preparations
func main() {
	// 注册事件 Register event
	eventHandler := dispatcher.NewEventDispatcher("", "").
		OnP2ChatAccessEventBotP2pChatEnteredV1(func(ctx context.Context, event *larkim.P2ChatAccessEventBotP2pChatEnteredV1) error {
			fmt.Printf("[ OnP2ChatAccessEventBotP2pChatEnteredV1 access ], data: %s\n", larkcore.Prettify(event))
			return nil
		})

// 创建路由处理器 Create route handler
	http.HandleFunc("/webhook/event", httpserverext.NewEventHandlerFunc(handler, larkevent.WithLogLevel(larkcore.LogLevelDebug)))

err := http.ListenAndServe(":7777", nil)

if err != nil {
		panic(err)
	}
}

# SDK 使用说明 SDK user guide：https://open.feishu.cn/document/uAjLw4CM/ukTMukTMukTM/server-side-sdk/python--sdk/preparations-before-development
from flask import Flask
from lark_oapi.adapter.flask import *
import lark_oapi as lark

app = Flask(__name__)

def do_p2_im_chat_access_event_bot_p2p_chat_entered_v1(data: lark.im.v1.P2ImChatAccessEventBotP2pChatEnteredV1) -> None:
    print(f'[ do_p2_im_chat_access_event_bot_p2p_chat_entered_v1 access ], data: {lark.JSON.marshal(data, indent=4)}')

# 注册事件 Register event
event_handler = lark.EventDispatcherHandler.builder("", "") \
    .register_p2_im_chat_access_event_bot_p2p_chat_entered_v1(do_p2_im_chat_access_event_bot_p2p_chat_entered_v1) \
    .build()

# 创建路由处理器 Create route handler
@app.route("/webhook/event", methods=["POST"])
def event():
    resp = event_handler.do(parse_req())
    return parse_resp(resp)

if __name__ == "__main__":
    app.run(port=7777)

package com.lark.oapi.sample.event;

import com.lark.oapi.core.utils.Jsons;
import com.lark.oapi.service.im.ImService;
import com.lark.oapi.service.im.v1.model.P2ChatAccessEventBotP2pChatEnteredV1;
import com.lark.oapi.sdk.servlet.ext.ServletAdapter;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

// SDK 使用说明 SDK user guide：https://open.feishu.cn/document/uAjLw4CM/ukTMukTMukTM/server-side-sdk/java-sdk-guide/preparations
@RestController
public class EventController {

// 注册事件 Register event
    private static final EventDispatcher EVENT_HANDLER = EventDispatcher.newBuilder("verificationToken", "encryptKey")
            .onP2ChatAccessEventBotP2pChatEnteredV1(new ImService.P2ChatAccessEventBotP2pChatEnteredV1Handler() {
                @Override
                public void handle(P2ChatAccessEventBotP2pChatEnteredV1 event) throws Exception {
                    System.out.printf("[ onP2ChatAccessEventBotP2pChatEnteredV1 access ], data: %s\n", Jsons.DEFAULT.toJson(event.getEvent()));
                }
            })
            .build();

// 注入 ServletAdapter 实例 Inject ServletAdapter instance
    @Autowired
    private ServletAdapter servletAdapter;

// 创建路由处理器 Create route handler
    @RequestMapping("/webhook/event")
    public void event(HttpServletRequest request, HttpServletResponse response)
            throws Throwable {
        // 回调扩展包提供的事件回调处理器 Callback handler provided by the extension package
        servletAdapter.handleEvent(request, response, EVENT_DISPATCHER);
    }
}

// SDK 使用说明 SDK user guide：https://open.feishu.cn/document/uAjLw4CM/ukTMukTMukTM/server-side-sdk/nodejs-sdk/preparation-before-development
import http from 'http';
import * as lark from '@larksuiteoapi/node-sdk';

// 注册事件 Register event
const eventDispatcher = new lark.EventDispatcher({
    encryptKey: '',
    verificationToken: '',
}).register({
    'im.chat.access_event.bot_p2p_chat_entered_v1': async (data) => {
        console.log(data);
        return 'success';
    },
});

const server = http.createServer();
// 创建路由处理器 Create route handler
server.on('request', lark.adaptDefault('/webhook/event', eventDispatcher));
server.listen(3000);