下面文章讲解获取OAuth2授权整个流程，创建机器人，使用机器人监听工会（工会就是创建的服务器）成员变化等等，对接国外的都是需要VPN的哦，对接的时候记得提前准备。
创建应用
点击 此页面添加应用,，创建完成以后会生成应用名称，公钥，客户id等等，这些我们可以保存下来。这些应用会自动和我们的工会关联的。
创建机器人
在下面页面创建一个机器人，机器人会会生成自己的token，这个一定要保存好，注意机器人安全。
配置OAuth2
页面创建我们的OAuth2，重定向URL需要配置前端页面的URL，因为获取用户token需要重定向到前端页面，这个地方我们自定义配置即可，授权我们可以访问用户的一些功能权限。
将机器人加入我们的工会
创建工会（服务器）直接在discord聊天页面创建就好了，这个就不多说了，那么我们如何将我们的机器人拉入到我们的服务器呢？
选择OAuth2，选择bot，勾选机器人的工会权限，然后下面会生成一个链接。
打开链接会出现下图内容，我们将我们的机器人加入到我们自己的服务器即可。
我们通过上面的步骤成功的创建了我们的应用、工会和机器人，下面我们将介绍如何使用OAuth2相关功能以及操作机器人。
OAuth2功能实现
<!-- Discord4J 依赖 --> <dependency> <groupId>com.discord4j</groupId> <artifactId>discord4j-core</artifactId> <version>3.2.1</version> </dependency> <dependency> <groupId>net.dv8tion</groupId> <artifactId>JDA</artifactId> <version>5.0.0-beta.12</version> </dependency>
根据配置的OAuth2页面生成相关的链接，用户点击授权以后回调到前端页面，页面会带有code以及state参数，code我们用来换取token，state授权页面我们传什么参数过去会给我们带回来的一个参数，授权类似与下面的地址。
https://discord.com/oauth2/authorize?client_id=1215207180614246411&state=%E9%9A%8F%E6%9C%BA%E5%8F%82%E6%95%B0&response_type=code&redirect_uri=http%3A%2F%2F9cxuu6.natappfree.cc%2Fdiscord%2FgetDiscordByCode&scope=identify+guilds+email+guilds.join+connections+guilds.members.read
根据token交互用户数据
拿到token以后我们可以查询用户的信息，用户工会情况等等。
package com.odcchina.server.api;
import com.odcchina.common.config.BaseComponent;
import com.odcchina.server.dto.DiscordDto;
import com.odcchina.server.service.DiscordService;
import com.odcchina.server.service.GuildEvent;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import lombok.extern.slf4j.Slf4j;
import net.dv8tion.jda.api.JDABuilder;
import net.dv8tion.jda.api.requests.GatewayIntent;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.transaction.annotation.Isolation;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import java.util.HashMap;
import java.util.Map;
@Slf4j
@RestController
@RequestMapping("/discord")
@Api(tags = "discord服务")
@Transactional(isolation = Isolation.READ_COMMITTED)
public class DiscordController extends BaseComponent {
@Autowired
private DiscordService discordService;
/**
* 授权回调code
* @param code
* @return
*/
@GetMapping("getDiscordByCode")
@ApiOperation("获取discord的Code")
public Map<String, String> getTuiteCode(String code) {
Map<String, String> map = new HashMap<>();
//根据code换取token
DiscordDto discordDto = discordService.getToken(code,null);
map.put("code", code);
map.put("access_token", discordDto.getAccessToken());
map.put("refresh_token", discordDto.getRefreshToken());
return map;
}
@GetMapping("findLaborUnionList")
@ApiOperation("查询我的工会列表")
public Map<String, String> findLaborUnionList(String token) {
Map<String, String> map = new HashMap<>();
try {
discordService.findLaborUnionList(token);
} catch (Exception e) {
throw new RuntimeException(e);
}
return map;
}
@GetMapping("findUserLaborUnion")
@ApiOperation("查询用户是否存在工会里面")
public Map<String, String> findUserLaborUnion(String token,String guildId) {
Map<String, String> map = new HashMap<>();
try {
discordService.findUserLaborUnion(token,guildId);
} catch (Exception e) {
throw new RuntimeException(e);
}
return map;
}
@GetMapping("findUser")
@ApiOperation("查询用户信息")
public Map<String, String> findUser(String token) {
Map<String, String> map = new HashMap<>();
try {
discordService.findUser(token);
} catch (Exception e) {
throw new RuntimeException(e);
}
return map;
}
}package com.odcchina.server.service;
import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;
import com.github.scribejava.apis.DiscordApi;
import com.odcchina.server.config.DiscordConfig;
import com.odcchina.server.dto.DiscordDto;
import com.odcchina.server.dto.DiscordlaborUnionDto;
import com.odcchina.server.dto.UserDto;
import lombok.extern.slf4j.Slf4j;
import net.dv8tion.jda.api.JDA;
import net.dv8tion.jda.api.JDABuilder;
import org.apache.commons.lang3.StringUtils;
import org.apache.http.HttpEntity;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClientBuilder;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.util.EntityUtils;
import org.springframework.stereotype.Service;
import java.io.*;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.*;
@Slf4j
@Service
public class DiscordService {
/**
* form表单提交
* @param url
* @param map
* @return
*/
public DiscordDto doPostForm(String url, Map<String, Object> map) {
String strResult = "";
CloseableHttpClient client = HttpClients.createDefault();
HttpPost httpPost = new HttpPost(url);
httpPost.setHeader("Content-Type","application/x-www-form-urlencoded;charset=UTF-8");
List<BasicNameValuePair> paramPairs = new ArrayList<>();
Set<String> keySet = map.keySet();
for (String key : keySet) {
Object val = map.get(key);
paramPairs.add(new BasicNameValuePair(key, val.toString()));
}
UrlEncodedFormEntity entity;
try {
// 4. 将参数设置到entity对象中
entity = new UrlEncodedFormEntity(paramPairs, "UTF-8");
// 5. 将entity对象设置到httppost对象中
httpPost.setEntity(entity);
// 6. 发送请求并回去响应
CloseableHttpResponse resp = client.execute(httpPost);
try {
HttpEntity respEntity = resp.getEntity();
strResult = EntityUtils.toString(respEntity, "UTF-8");
JSONObject json = JSON.parseObject(strResult.toString());
Object access_token = json.get("access_token");
Object refresh_token = json.get("refresh_token");
Object token_type = json.get("token_type");
Object expires_in = json.get("expires_in");
if(access_token == null || refresh_token == null){
return null;
}
DiscordDto discordDto = new DiscordDto();
discordDto.setAccessToken(access_token.toString());
discordDto.setRefreshToken(refresh_token.toString());
discordDto.setTokenType(token_type.toString());
discordDto.setExpiresIn(Integer.parseInt(expires_in.toString()));
return discordDto;
} finally {
resp.close();
}
} catch (ClientProtocolException e) {
e.printStackTrace();
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} finally {
// 10. 关闭连接，释放资源
try {
client.close();
} catch (Exception e) {
e.printStackTrace();
}
}
return null;
}
/**
* 根据code换取token
*
* @param code
* @return
*/
public DiscordDto getToken(String code,String refreshToken) {
try {
Map<String, Object> formData = new HashMap<>();
if(!StringUtils.isBlank(code)){
formData.put("grant_type", "authorization_code");
formData.put("code", code);
}
if(!StringUtils.isBlank(refreshToken)){
formData.put("refresh_token", refreshToken);
formData.put("grant_type", "refresh_token");
}
//TODO 重定向配置的URL,一定要和重定向里面的地址保持一致
formData.put("redirect_uri", 重定向配置的地址URL");
formData.put("client_id", DiscordConfig.CLIENT_ID);
formData.put("client_secret", DiscordConfig.CLIENT_SECRET);
// 创建URL对象
DiscordDto discordDto = this.doPostForm("https://discord.com/api/oauth2/token",formData);
return discordDto;
} catch (Exception e) {
throw new RuntimeException(e);
}
}
/**
* 获取用户的所有服务器
* @param token
* @return
*/
public List<DiscordlaborUnionDto> findLaborUnionList(String token) {
try {
// 设置请求URL和Bearer Token
CloseableHttpClient httpClient = HttpClientBuilder.create().build();
HttpGet httpPost = new HttpGet("https://discord.com/api/v9/users/@me/guilds");
httpPost.setHeader("Content-Type", "application/json;charset=utf8");
httpPost.setHeader("Authorization", "Bearer " + token);
CloseableHttpResponse response = null;
// 由客户端执行(发送)Post请求
response = httpClient.execute(httpPost);
// 从响应模型中获取响应实体
HttpEntity responseEntity = response.getEntity();
if (response.getStatusLine().getStatusCode() == 200 && responseEntity != null) {
String responseJson = EntityUtils.toString(responseEntity);
JSONArray jsonArray = JSON.parseArray(responseJson);
List<DiscordlaborUnionDto> jsonArrayToStringList = JSONObject.parseArray(jsonArray.toJSONString(),DiscordlaborUnionDto.class);
return jsonArrayToStringList;
}
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
public Boolean findUserLaborUnion(String token, String guildId) {
try {
// 设置请求URL和Bearer Token
CloseableHttpClient httpClient = HttpClientBuilder.create().build();
HttpGet httpPost = new HttpGet("https://discord.com/api/v9/users/@me/guilds/" + guildId+"/member");
httpPost.setHeader("Content-Type", "application/json;charset=utf8");
httpPost.setHeader("Authorization", "Bearer " + token);
CloseableHttpResponse response = null;
// 由客户端执行(发送)Post请求
response = httpClient.execute(httpPost);
// 从响应模型中获取响应实体
HttpEntity responseEntity = response.getEntity();
if (response.getStatusLine().getStatusCode() == 200 && responseEntity != null) {
String responseJson = EntityUtils.toString(responseEntity);
JSONObject jsonArray = JSON.parseObject(responseJson);
if(jsonArray.get("user") != null){
return true;
}
}
} catch (Exception e) {
e.printStackTrace();
}
return false;
}
/**
* 查询用户信息
* @param token
* @return
*/
public UserDto findUser(String token) {
try {
// 设置请求URL和Bearer Token
CloseableHttpClient httpClient = HttpClientBuilder.create().build();
HttpGet httpPost = new HttpGet("https://discord.com/api/v9/users/@me");
httpPost.setHeader("Content-Type", "application/json;charset=utf8");
httpPost.setHeader("Authorization", "Bearer " + token);
CloseableHttpResponse response = null;
// 由客户端执行(发送)Post请求
response = httpClient.execute(httpPost);
// 从响应模型中获取响应实体
HttpEntity responseEntity = response.getEntity();
if (response.getStatusLine().getStatusCode() == 200 && responseEntity != null) {
String responseJson = EntityUtils.toString(responseEntity);
JSONObject jsonArray = JSON.parseObject(responseJson);
UserDto userDto = JSON.toJavaObject(jsonArray, UserDto.class);
return userDto;
}
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
}package com.odcchina.server.dto;
import lombok.Data;
import lombok.experimental.Accessors;
@Data
@Accessors(chain = true)
public class DiscordDto {
/**
* 访问令牌
*/
private String accessToken;
/**
* 刷新令牌
*/
private String refreshToken;
/**
* 认证方式 Bearer
*/
private String tokenType;
/**
* 过期时间 （秒）
*/
private Integer expiresIn;
}package com.odcchina.server.dto;
import lombok.Data;
import lombok.experimental.Accessors;
/**
* 获取工会列表
*/
@Data
@Accessors(chain = true)
public class DiscordlaborUnionDto {
/**
* 工会ID
*/
public String id;
/**
* 工会名称
*/
public String name;
}package com.odcchina.server.dto;
import lombok.Data;
import lombok.experimental.Accessors;
@Data
@Accessors(chain = true)
public class DiscordUserDto {
/**
* 服务器ID
*/
private String guildId;
/**
* 服务器名称
*/
private String guildName;
/**
* 用户ID
*/
private String userId;
/**
* 用户名称
*/
private String userName;
}package com.odcchina.server.config;
/**
* Discord相关配置
*/
public class DiscordConfig {
/**
* 客户id和客户私钥
*/
public static final String CLIENT_ID = "111111";
public static final String CLIENT_SECRET = "nL8gLAmZEFZYtQQ2mqE3tEYWC111111";
public static final String PUBLIC_CLIENT_SECRET = "feca6db06a1af3c5ebff8fb3710213b86651f6401623d103a5111111";
public static final String TOKEN_ENDPOINT = "https://discord.com/api/oauth2/token";
}使用机器人监听工会会员变动情况
工会会员新加入，退出等情况监听，前期我们需要开启下面这些功能，不然机器人无法监听：
@GetMapping("botMonitor")
@ApiOperation("开启机器人监听服务")
public Map<String, String> botMonitor() {
//启动机器人，监听成员事件
try {
//这里是机器人的token的，注意下
String botToken = "1111.Gh00hD.1111";
JDABuilder builder = JDABuilder.createDefault(botToken);
//添加事件监听器
builder.addEventListeners(new GuildEvent());
//builder.useSharding(int shardId, int shardTotal)
//工会成员 GUILD_MEMBERS TODO 这个地方在机器人里面有个选项需要开启，不然无法调用
builder.enableIntents(GatewayIntent.GUILD_MEMBERS);
builder.build();
} catch (Exception e) {
e.printStackTrace();
}当我们启动以后我们的机器人就会在线，由于我没有启动监听，所以我们的机器人在离线中的：
package com.odcchina.server.service;
import com.odcchina.server.dto.DiscordUserDto;
import net.dv8tion.jda.api.entities.Guild;
import net.dv8tion.jda.api.entities.User;
import net.dv8tion.jda.api.events.guild.GuildLeaveEvent;
import net.dv8tion.jda.api.events.guild.invite.GuildInviteCreateEvent;
import net.dv8tion.jda.api.events.guild.invite.GuildInviteDeleteEvent;
import net.dv8tion.jda.api.events.guild.member.GuildMemberJoinEvent;
import net.dv8tion.jda.api.events.guild.member.GuildMemberRemoveEvent;
import net.dv8tion.jda.api.events.guild.member.GuildMemberRoleAddEvent;
import net.dv8tion.jda.api.events.guild.member.GuildMemberRoleRemoveEvent;
import net.dv8tion.jda.api.hooks.ListenerAdapter;
import javax.annotation.Nonnull;
public class GuildEvent extends ListenerAdapter {
@Override
public void onGuildInviteCreate(@Nonnull GuildInviteCreateEvent event) {
//一个邀请被创建了
}
@Override
public void onGuildInviteDelete(@Nonnull GuildInviteDeleteEvent event) {
//一个邀请被删除了
}
@Override
public void onGuildMemberJoin(@Nonnull GuildMemberJoinEvent event) {
//有新成员进入公会
Guild guild = event.getGuild();
User user = event.getUser();
DiscordUserDto discordUserDto = new DiscordUserDto();
discordUserDto.setGuildId(guild.getId());
discordUserDto.setGuildName(guild.getName());
discordUserDto.setUserId(user.getId());
discordUserDto.setUserName(user.getName());
}
@Override
public void onGuildLeave(@Nonnull GuildLeaveEvent event) {
//有老成员离开公会
}
@Override
public void onGuildMemberRemove(@Nonnull GuildMemberRemoveEvent event) {
//有成员被移除公会
}
@Override
public void onGuildMemberRoleAdd(@Nonnull GuildMemberRoleAddEvent event) {
//公会成员添加角色
}
@Override
public void onGuildMemberRoleRemove(@Nonnull GuildMemberRoleRemoveEvent event) {
//公会成员移除角色
}
}机器人其他功能调用，比如查询邀请信息，查询邀请我的频道会员
https://discord.com/api/v9/channels/工会ID/invites
关于其他机器人功能实现可以参考下面的文档，大佬写的很详细，点这里
如果这篇文章在你一筹莫展的时候帮助到了你，可以请作者吃个棒棒糖🙂，如果有啥疑问或者需要完善的地方欢迎大家在下面留言或者私信作者优化改进。
本文章为转载内容，我们尊重原作者对文章享有的著作权。如有内容错误或侵权问题，欢迎原作者联系我们进行内容更正或删除文章。
