说明这里介绍四种平时常用的http请求方法：GET、POST、PUT、DELETE。在官方的介绍文档中关于InvokeHTTP处理器的描述是这么说的：AnHTTPclientprocessorwhichcaninteractwithaconfigurableHTTPEndpoint.ThedestinationURLandHTTPMethodareconfigurable.FlowFileattributesareconvertedtoHTTPheadersandtheFlowFilecontentsareincludedasthebodyoftherequest(iftheHTTPMetho