[实践]apollo+MQTT协议发送与订阅消息，测试工具用MQTTLents

参考：原文链接

写在前面的话：
mac 本来实践一下看看
先下载好MQTTLents和安装java，此处不再赘述，可自行谷歌

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实践

1、下载apollo
https://archive.apache.org/dist/activemq/activemq-apollo/1.7.1/

2、解压并启动apollo

• 双击上面的可执行文件弹出terminal或在命令行执行如下命令，可能会有如下提示：没有设置JAVA_HOME

xxxxxxx@localhost  /xxxxxxx/study/python3_demo  /Users/xxxxxxx/Downloads/apache-apollo-1.7.1/bin/apollo
Error: JAVA_HOME is not defined correctly.
  We cannot execute /System/Library/Frameworks/JavaVM.framework/Home/bin/java

• 设置JAVA_HOME：注意–此处sudo 修改/etc/profile是没用的。必须修改~/.bash_profile。

 xxxxxxx@localhost  /xxxxxxx/study/python3_demo  vim ~/.bash_profile
......
export JAVA_8_HOME=/Library/Java/JavaVirtualMachines/jdk1.8.0_201.jdk/Contents/Home
export JAVA_HOME=$JAVA_8_HOME
export PATH=$JAVA_HOME/bin:$PATH:.:$JMETER_HOME/bin:$PATH:~/Library/Python/2.7/lib/python/site-packages
......

• 使环境变量生效

 xxxxxxx@localhost  /xxxxxxx/study/python3_demo  source ~/.bash_profile

• 启动apollo

 xxxxxxx@localhost  /xxxxxxx/study/python3_demo  
 /Users/wangjie/Downloads/apache-apollo-1.7.1/bin/apollo
usage: apollo [--log <log_level>] <command> [<args>]

The most commonly used apollo commands are:
    create           creates a new broker instance
    disk-benchmark   Benchmarks your disk's speed
    help             Display help information
    version          Displays the broker version

See apollo help <command>' for more information on a specific command.
# 启动命令如下：create + 自动以name + broker目录，缺一不可，否则会报错
 xxxxxxx@localhost  /xxxxxxx/study/python3_demo  /Users/xxxxxxx/Downloads/apache-apollo-1.7.1/bin/apollo create myapollo /Users/xxxxxxx/Downloads/apache-apollo-1.7.1/broker
Creating apollo instance at: /Users/xxxxxxx/Downloads/apache-apollo-1.7.1/broker
Generating ssl keystore...

Warning:
JKS 密钥库使用专用格式。建议使用 "keytool -importkeystore -srckeystore keystore -destkeystore keystore -deststoretype pkcs12" 迁移到行业标准格式 PKCS12。

You can now start the broker by executing:

   "/Users/xxxxx/Downloads/apache-apollo-1.7.1/broker/bin/apollo-broker" run

Or you can run the broker in the background using:

   "/Users/xxxxx/Downloads/apache-apollo-1.7.1/broker/bin/apollo-broker-service" start

xxxxxxx@localhost  /xxxxxxx/study/python3_demo  /Users/xxxxxxx/Downloads/apache-apollo-1.7.1/broker/bin/apollo-broker run

    _____                .__  .__
   /  _  \ ______   ____ |  | |  |   ____
  /  /_\  \\____ \ /  _ \|  | |  |  /  _ \
 /    |    \  |_> >  <_> )  |_|  |_(  <_> )
 \____|__  /   __/ \____/|____/____/\____/
         \/|__|  Apache Apollo (1.7.1)


Loading configuration file '/Users/xxxxxxx/Downloads/apache-apollo-1.7.1/broker/etc/apollo.xml'.
INFO  | OS     : Mac OS X 10.14.3
INFO  | JVM    : Java HotSpot(TM) 64-Bit Server VM 1.8.0_201 (Oracle Corporation)
INFO  | Apollo : 1.7.1 (at: /Users/xxxxxxx/Downloads/apache-apollo-1.7.1)
INFO  | OS is restricting the open file limit to: 10240
INFO  | Starting store: leveldb store at /Users/xxxxxxx/Downloads/apache-apollo-1.7.1/broker/data
INFO  | Accepting connections at: tcp://0.0.0.0:61613
INFO  | Accepting connections at: tls://0.0.0.0:61614
INFO  | Accepting connections at: ws://0.0.0.0:61623/
INFO  | Accepting connections at: wss://0.0.0.0:61624/
INFO  | Administration interface available at: https://127.0.0.1:61681/
INFO  | Administration interface available at: http://127.0.0.1:61680/

4、浏览器打开：各种协议的端口如上
http://127.0.0.1:61680/ admin登录进入管理页面（用户名和密码admin/password），可以新增几个topics。

ok了，看着apollo是可以了。

5、打开MQTTLens，连接apollo服务，相关注意事项都在图中了

点击下方保存后，进入如下界面，如果没连接成功，左侧myapollo的按钮不是绿色而是红色。下图中的1和2就是之前在apollo页面新增的，填写好1之后一定要点击右侧的subscribe按钮，会在下方生成一个类似消息打印的下拉框。然后在3输入想要发送的message，就可以点击右侧2的publish发送消息了。这时候发送成功会在下方显示成功的消息。如下图：

6、值得一提的是：apollo目录下有一个example，其中有个文件，可以双击点开然后也可以连接apollo，来发布和订阅topic消息，从而可以和mqttlens互动，达到聊天室的功能。

双击上图的index.html即可进入如下页面：

8、未完待续…