if (request.method.toLowerCase() === "get"){
 // param 请求信息
 const cache = this.handleCatchControl(request)
 if (!cache.isRequest)
 return this.listener.onApiResponse(request, 200, cache.data), sequence; //将缓存返回给对应的请求
}

// param 响应头，上下文，响应数据
this.setCatchControl(headers, context, response.data)

//如果同时发起多个`GET`请求，需要拼接之前缓存数据
ApiAgent.cacheData = Object.assign(ApiAgent.cacheData,{
 [context.request.url]: { //api
 data, //响应数据
 expireTime: Number(cacheControl.split("=")[1] + '000'), //过期时间
 cacheTime: new Date().getTime(), //缓存时间
 }
})

// param 响应头，上下文，响应数据
setCatchControl(responseHeader: any, context: any, data: any) {
 if (context.request.method.toLowerCase() === "get") {
 const headers = HandleHeaders.get(responseHeader)
 const cacheControl = headers["cache-control"]
 if (cacheControl && cacheControl !== "no-cache") {
  ApiAgent.cacheData = Object.assign(ApiAgent.cacheData,{
  [context.request.url]: {
   data,
   expireTime: Number(cacheControl.split("=")[1] + '000'),
   cacheTime: new Date().getTime(),
  }
  })
 }
 } else {
 ApiAgent.cacheData = {}
 }
}

// param 请求信息
handleCatchControl(request): any {
 const cacheArr = ApiAgent.cacheData
 if (Object.keys(cacheArr).length === 0)
 return { isRequest: true }
 let cache = {}
 Object.keys(cacheArr).forEach(cacheArrKey => {
 if (cacheArrKey === request.url) {
  cache = cacheArr[cacheArrKey]
 }
 })
 const newDate = new Date().getTime()
 if (newDate - cache.cacheTime < expireTime){
 return { isRequest: false, data: cache.data }
 }
 return { isRequest: true}
}

class HandleHeaders {
 static get(headers: { [key: string]: string }) {
 const headersData: any = {}
 Object.keys(headers).forEach(key => {
  headersData[key.toLowerCase()] = headers[key]
 })
 return headersData
 }
}