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【golang】http发送指定gzip压缩

GoLang 1044 0 创建时间：2023-02-10 18:09:18

golang gzip http

#### http发送指定gzip压缩
用http发送消息时，可以指定为gzip压缩，对数据进行压缩后再传输不仅可以节省带宽还可以加快传输速度

http_server.go
```go
  package main
   
   import (
       "compress/gzip"
       "fmt"
       "io"
       "io/ioutil"
       "net/http"
   )
 
  func handler(resp http.ResponseWriter, req *http.Request) {
 
      // var wr io.Writer
      // wr = os.Stdout
      // req.Header.Write(wr)
  
      body, err := gzip.NewReader(req.Body)
      if err != nil {
          fmt.Println("unzip is failed, err:", err)
      }
      defer body.Close()
      data, err := ioutil.ReadAll(body)
      if err != nil  {
          fmt.Println("-------------read all is failed.err:", err)
      }
      fmt.Println("===string(data)=", string(data))
  
      respJson := []byte(`{
          "rc": 70200,
          "info_en": "success"    
      }`)
  
      resp.Write(respJson)
  }
  
  func main() {
      fmt.Println("http://localhost:9903/request")
      http.HandleFunc("/request", handler)
      http.ListenAndServe(":9903", nil)
  }
```
http_client.go

```go
package main
  
  import (
      "bytes"
      "compress/gzip"
      "encoding/json"
      "fmt"
      "io/ioutil"
      "net/http"
 )
 
 func main() {
     s := []byte(`{"adunitid":"08086D3CC2DC39741BBE1DC92945E022","api_ver":"1.4.8"}`)
     data, err := json.Marshal(s)
     if err != nil {
         fmt.Println("marshal is faild,err: ", err)
     }
 
     var zBuf bytes.Buffer
     zw := gzip.NewWriter(&zBuf)
     if _, err = zw.Write(data); err != nil {
         fmt.Println("-----gzip is faild,err:", err)
     }
     zw.Close()
     httpRequest, err := http.NewRequest("POST", "http://localhost:9903/request", &zBuf)
     if err != nil {
         fmt.Println("http request is failed, err: ", err)
     }
     httpRequest.Header.Set("Accept-Encoding", "gzip")
     client := http.Client{}
     httpResponse, err := client.Do(httpRequest)
     if err != nil {
         fmt.Println("httpResponse is failed, err: ", err)
     }
     defer httpResponse.Body.Close()
 
     body := httpResponse.Body
     if httpResponse.Header.Get("Content-Encoding") == "gzip" {
         body, err = gzip.NewReader(httpResponse.Body)
         if err != nil {
             fmt.Println("http resp unzip is failed,err: ", err)
         }
     }
     data, err = ioutil.ReadAll(body)
     if err != nil {
         fmt.Println("read resp is failed, err: ", err)
     }
 
     fmt.Println("------data=", string(data))
 }
```

【golang】http发送指定gzip压缩

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