golang post发送 json请求

桃扇骨 2021-09-07 06:20 1269阅读 0赞

实例1：

package main
    
    import (
    	"bytes"
    	"fmt"
    	"io/ioutil"
    	"net/http"
    )
    
    func main() {
    	url := "http://www.baidu.com"
    
    	fmt.Println("url:>", url)
    
    	usrId := "login"
    	pwd := "pwd12344"
    
    	//json序列化
    	post := "{\"UserId\":\"" + usrId +
    		"\",\"Password\":\"" + pwd +
    		"\"}"
    
    	fmt.Println(url, "post", post)
    
    
    	var jsonStr = []byte(post)
    	fmt.Println("jsonStr", jsonStr)
    	fmt.Println("new_str", bytes.NewBuffer(jsonStr))
    
    
    	req, err := http.NewRequest("POST", url, bytes.NewBuffer(jsonStr))
    	// req.Header.Set("X-Custom-Header", "myvalue")
    	req.Header.Set("Content-Type", "application/json")
    
    	client := &http.Client{}
    	resp, err := client.Do(req)
    	if err != nil{
    		panic(err)
    	}
    	defer resp.Body.Close()
    
    	fmt.Println("status", resp.Status)
    	fmt.Println("response:", resp.Header)
    	body, _ := ioutil.ReadAll(resp.Body)
    	fmt.Println("response Body:", string(body))
    
    }

实例2：

import (
        "net/http"
        "encoding/json"
        "fmt"
        "bytes"
        "io/ioutil"
        "unsafe"
    )
     
    type JsonPostSample struct {
     
    }
     
    func (this *JsonPostSample) SamplePost() {
        song := make(map[string]interface{})
        song["name"] = "李白"
        song["timelength"] = 128
        song["author"] = "李荣浩"
        bytesData, err := json.Marshal(song)
        if err != nil {
            fmt.Println(err.Error() )
            return
        }
        reader := bytes.NewReader(bytesData)
        url := "http://localhost/echo.php"
        request, err := http.NewRequest("POST", url, reader)
        if err != nil {
            fmt.Println(err.Error())
            return
        }
        request.Header.Set("Content-Type", "application/json;charset=UTF-8")
        client := http.Client{}
        resp, err := client.Do(request)
        if err != nil {
            fmt.Println(err.Error())
            return
        }
        respBytes, err := ioutil.ReadAll(resp.Body)
        if err != nil {
            fmt.Println(err.Error())
            return
        }
        //byte数组直接转成string，优化内存
        str := (*string)(unsafe.Pointer(&respBytes))
        fmt.Println(*str)
    }