使用JMeter测试基于WebSocket协议的服务

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由于JMeter没有针对WebSocket的sampler，所以就需要安装开源的插件，以使其支持WebSocket协议。

安装JMeter WebSocketSampler

首先，从github上clone源码下来，地址如下： https://github.com/maciejzaleski/JMeter-WebSocketSampler
之后，使用Maven构建此代码后，将jar包“JMeterWebSocketSampler-1.0.2-SNAPSHOT.jar”放到JMeter的“lib/ext/”目录中，此目录是JMeter用来放置扩展包的地方。
最后，将websocket sampler依赖的其他jar包放到“lib”目录下，此目录是JMeter用来放插件所依赖的jar包的地方。websocket sampler所依赖的jar包如下：
- jetty-http-9.1.1.v20140108.jar
- jetty-io-9.1.1.v20140108.jar
- jetty-util-9.1.1.v20140108.jar
- websocket-api-9.1.1.v20140108.jar
- websocket-client-9.1.1.v20140108.jar
- websocket-common-9.1.1.v20140108.jar
打开JMeter，通过”Add” -> “Sampler” -> “WebSocket Sampler”，添加一个取样器：