代码语言：javascript复制
环信地址：https://www.easemob.com/product/mqttMQTT 本身是一种物联网通讯协议。由IBM在1999年设计，经过多年发展，最终成为了当下物联网的标准协议。 MQTT协议的优点（相较于HTTP）低开销、低带宽、可以隐藏客户端IP、端口（所有的消息都有MQTT服务器代理转发）、允许客户端自由创建topic等。
环信的Github项目可谓是一言难尽，没有任何相关SDK详细的说明！(还需要自行官网找，github项目区看不到！信息没有联通！)我们还是按照我的教程将sdk导入Maven吧！
进入正文：开发环境配置
1、自己编译SDK
Java项目SDK下载地址：https://github.com/easemob/easemob-mqtt-server-sdk/
将下载的代码打成Jar包（最终的目的是导入Maven仓库）
进入 src同级路径 输入
代码语言：javascript复制mvn package
# package install二选一 如果不想手动将jar包打入maven仓库 可以直接install
mvn install2、将jar导入Maven仓库
找到刚才编译的target目录下的jar包，然后cmd
代码语言：javascript复制mvn install:install-file -Dfile=huanxin-mqtt-sdk-1.0.0.RELEASE.jar -DgroupId=org.example -DartifactId=huanxin-mqtt-sdk -Dversion=1.0.0.RELEASE -Dpackaging=jar以后我们的Maven就可以引用了
代码语言：javascript复制 <dependency>
<groupId>org.example</groupId>
<artifactId>huanxin-mqtt-sdk</artifactId>
<version>1.0.0.RELEASE</version>
</dependency>SDK 引入成功，接下来我就就可以使用SDK了
SDK 代码编写
服务端SDK文档：https://docs-im.easemob.com/mqtt/serversdkdownload#服务器sdk
代码语言：javascript复制import com.easemob.sdk.Client;
import com.easemob.sdk.Config;
import com.easemob.sdk.api.*;
import com.easemob.sdk.domain.*;
import com.xunliao.zhenliaowms.pojo.ResultPage;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.stereotype.Component;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
/**
* @author : zanglikun
* @date : 2021/12/11 14:33
* @Version: 1.0
* @Desc : 环信MQTT接入服务
*/
@Api(tags = "环信MQTT服务")
@RestController
@RequestMapping("/easemobMQTT")
@Component
@Slf4j
public class MQTT {
//SDK初始化 https://docs-im.easemob.com/mqtt/serversdkdownload#sdk初始化
/*
cilentId、cilentSercret 均在环信应用概况-应用详情-开发者ID查看
RestApi 在环信MQTT服务概况-服务配置-REST API地址
*/
@Bean
public static Client createClient() {
Config config = new Config(); // 实例化应用配置类
config.setAppClientId("YXA6wbGneqFxTaGeA8jsABvfFg")
.setAppClientSecret("YXA6v4ZQ5-Om_taqYmhdYb95E2wWRQ8")
.setRestApi("https://api.cn1.mqtt.chat/app/vms2j0");
Client client = new Client(config); // 实例化应用客户端
return client;
}
@Autowired
private Client client;
/**
* 获取临时访问Token https://docs-im.easemob.com/mqtt/serversdkdownload#获取临时访问token
* 需要用一个环信用户的信息，去随便找一个账号密码即可,未来使用此Token来发送消息
*/
@ApiOperation("获取临时访问Token")
@PostMapping("/getToken")
public ResultPage GetToken(String username, String password) {
try {
ApplyTokenRequest applyTokenRequest = new ApplyTokenRequest(); // 创建请求参数类
applyTokenRequest.setUsername("8982349"); // 设置请求参数
applyTokenRequest.setPassword("995f56a38e1b0ca0be6f28c3a5a80313"); // 设置请求参数
ResponseOk<TokenInfo> responseOk = client.applyToken(applyTokenRequest); // 调用应用客户端发起请求
if (responseOk.getCode() == 200) { // 如果返回code为200，请求正常返回
String access_toke = responseOk.getBody().getAccess_token(); // 获取返回对象字段值
Long expires_time = responseOk.getBody().getExpires_in();
//System.out.println("获取的临时Token是：" access_toke);
//System.out.println("临时Token失效时间至：" expires_time);
return new ResultPage(true, "获取Token成功!有效期：" expires_time, access_toke);
}
} catch (Exception e) {
log.error("获取账号密码：{},{}：Token出现异常", username, password);
}
return new ResultPage(false, "获取Token失败!", null);
}
/**
* 服务端应用发消息 https://docs-im.easemob.com/mqtt/serversdkdownload#发送消息
* ClientID 由2部分组成，以@连接。我这里使用的是账号@MQTT里面的AppID AppID唯一，但是账号一定不能用相同的！
* Payload 支持json、xml、raw格式
*/
@ApiOperation("服务端应用发消息")
@PostMapping("/serverSendMsg")
public ResultPage ServerSendMsg(String topic, String account, String message) {
try {
if (StringUtils.isBlank(message) || message.length() > 50) {
return new ResultPage(false, "抱歉，您输入的内容为空或者长度大于50！", null);
}
if (StringUtils.isBlank(topic) || StringUtils.isBlank(account)) {
return new ResultPage(false, "抱歉，您输入的账号ID或者主题为空！", null);
}
String[] topics = new String[]{"all-server"};
SendMessage sendMessage = new SendMessage();
sendMessage.setClientid(account "@vms2j0");
sendMessage.setPayload(message);
sendMessage.setTopics(topics);
ResponseOk<ChatInfo> responseOk = client.sendMessage(sendMessage);
if (responseOk.getCode() == 200) {
ChatInfo chatInfo = responseOk.getBody();
//System.out.println(responseOk.getMsg());
//System.out.println(chatInfo.toString());
//System.out.println("发送消息的结果是" chatInfo);
return new ResultPage(true, "服务端发送消息成功!", chatInfo);
} else {
return new ResultPage(false, "服务端发送消息成功，但请求状态不是200", responseOk.getBody(), responseOk.getCode());
}
} catch (Exception e) {
log.error("服务端发送消息失败,数据依次是：", topic, account, message);
}
return new ResultPage(false, "服务端发送消息失败!", null);
}
/**
* 查询MQTT客户端连接记录 https://docs-im.easemob.com/mqtt/serversdkdownload#查询客户端连接记录
* 传入时间 并指定CilentID 由 账号@MQTT的AppID组成
* 用后台发消息，不会由连接记录
*/
@ApiOperation("查询MQTT客户端连接记录")
@PostMapping("/findMQTTClientLinkRecord")
public ResultPage mainnnnn(String accout, String beginTime, String endTime, Integer pageNum, Integer pageSize) throws Exception {
try {
QueryMqttRecordDevice queryMqttRecordDevice = new QueryMqttRecordDevice();
queryMqttRecordDevice.setBeginTime("2021-12-11 13:00:00");
queryMqttRecordDevice.setEndTime("2021-12-25 17:00:00");
queryMqttRecordDevice.setCurrentPage(1);
queryMqttRecordDevice.setPageSize(10);
queryMqttRecordDevice.setClientid(accout "@vms2j0");
ResponseOk<DeviceRecordInfo> responseOk = client.queryMqttRecordDevice(queryMqttRecordDevice);
if (responseOk.getCode() == 200) {
DeviceRecordInfo deviceRecordInfo = responseOk.getBody();
//System.out.println(deviceRecordInfo);
return new ResultPage(true, "查询MQTT客户端链接成功!", deviceRecordInfo);
} else {
return new ResultPage(true, "查询MQTT客户端链接成功 但状态不是200", responseOk.getBody(), responseOk.getCode());
}
} catch (Exception e) {
log.error("查询MQTT客户端链接失败！");
}
return new ResultPage(false, "查询MQTT客户端链接失败！", null);
}
/**
* 根据Client ID查询指定客户端当前session连接信息 https://docs-im.easemob.com/mqtt/serversdkdownload#查询客户端session信息
* 依旧是传入指定CilentID 由 账号@MQTT的AppID
* 目前暂时没发现有啥用
*/
@ApiOperation("查询某个账号的Session信息")
@PostMapping("/findSessionInfo")
public ResultPage FindSessionInfo(String account, Integer pageNum, Integer pageSize) throws Exception {
try {
QuerySessionByClientId querySessionByClientId = new QuerySessionByClientId();
querySessionByClientId.setClientid(account "@vms2j0");
querySessionByClientId.setCurrentPage(1);
querySessionByClientId.setPageSize(10);
ResponseOk<ClientInfo> responseOk = client.querySessionByClientId(querySessionByClientId);
if (responseOk.getCode() == 200) {
ClientInfo clientInfo = responseOk.getBody();
//System.out.println(clientInfo);
return new ResultPage(true, "查询:" account " 的Session成功", clientInfo);
} else {
return new ResultPage(true, "查询:" account " 的Session 状态不是200", responseOk.getBody(), responseOk.getCode());
}
} catch (Exception e) {
log.error("查询:{},Session失败", account);
}
return new ResultPage(false, "查询:" account " 的Session失败", null);
}
/**
* 查询客户端消息发送&投递记录 https://docs-im.easemob.com/mqtt/serversdkdownload#查询客户端消息发送_投递记录
* 依旧是传入指定ClientID 由 账号@MQTT的AppID
*/
@ApiOperation("查询客户端消息发送&投递记录")
@PostMapping("/findClientMsg")
public ResultPage mains(String account, String beginTime, String endTime, Integer pageNum, Integer pageSize) throws Exception {
try {
QueryMqttRecordMessageOfClient queryMqttRecordMessageOfClient = new QueryMqttRecordMessageOfClient();
queryMqttRecordMessageOfClient.setClientid(account "@vms2j0");
queryMqttRecordMessageOfClient.setBeginTime("2021-12-11 15:00:00");
queryMqttRecordMessageOfClient.setEndTime("2021-12-25 18:49:00");
queryMqttRecordMessageOfClient.setCurrentPage(pageNum);
queryMqttRecordMessageOfClient.setPageSize(pageSize);
queryMqttRecordMessageOfClient.setOrder(OrderParams.desc);
ResponseOk<MqttMessageInfo> responseOk = client.queryMqttRecordMessageOfClient(queryMqttRecordMessageOfClient);
if (responseOk.getCode() == 200) {
MqttMessageInfo mqttMessageInfo = responseOk.getBody();
//System.out.println(mqttMessageInfo);
return new ResultPage(true, "查询客户端消息发送&投递记录成功！", mqttMessageInfo);
} else {
return new ResultPage(false, "查询客户端消息发送 状态结果不是200！", responseOk.getBody(), responseOk.getCode());
}
} catch (Exception e) {
log.error("查询客户端消息发送&投递记录出现异常！");
}
return new ResultPage(false, "查询客户端消息发送&投递记录", null);
}
}特殊说明：以上文章，均是我实际操作，写出来的笔记资料，不会盗用别人文章！烦请各位，请勿直接盗用！转载记得标注来源！
