在线词典课程笔记|青训营

彩云词典

1. 介绍

通过命令输入输入英文，将自动传回翻译后的中文。

2. 抓包

打开浏览器访问fanyi.caiyunapp.com/复制请求数据和响应数据 请求数据：

curl 'https://api.interpreter.caiyunai.com/v1/dict' \
  -H 'authority: api.interpreter.caiyunai.com' \
  -H 'accept: application/json, text/plain, */*' \
  -H 'accept-language: zh-CN,zh;q=0.9' \
  -H 'app-name: xy' \
  -H 'content-type: application/json;charset=UTF-8' \
  -H 'device-id: 6ef53c6576d9facb853f94d3e43b325d' \
  -H 'origin: https://fanyi.caiyunapp.com' \
  -H 'os-type: web' \
  -H 'os-version;' \
  -H 'referer: https://fanyi.caiyunapp.com/' \
  -H 'sec-ch-ua: "Google Chrome";v="113", "Chromium";v="113", "Not-A.Brand";v="24"' \
  -H 'sec-ch-ua-mobile: ?0' \
  -H 'sec-ch-ua-platform: "Windows"' \
  -H 'sec-fetch-dest: empty' \
  -H 'sec-fetch-mode: cors' \
  -H 'sec-fetch-site: cross-site' \
  -H 'user-agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/113.0.0.0 Safari/537.36' \
  -H 'x-authorization: token:qgemv4jr1y38jyq6vhvi' \
  --data-raw '{"trans_type":"en2zh","source":"hello"}' \
  --compressed

3. 代码生成

访问网址curlconverter.com/go/将上面的请求数据…

package main

import (
	"fmt"
	"io"
	"log"
	"net/http"
	"strings"
)

func main() {
	client := &http.Client{}
	var data = strings.NewReader(`{"trans_type":"en2zh","source":"hello"}`)
	req, err := http.NewRequest("POST", "https://api.interpreter.caiyunai.com/v1/dict", data)
	if err != nil {
		log.Fatal(err)
	}
	req.Header.Set("authority", "api.interpreter.caiyunai.com")
	req.Header.Set("accept", "application/json, text/plain, */*")
	req.Header.Set("accept-language", "zh-CN,zh;q=0.9")
	req.Header.Set("app-name", "xy")
	req.Header.Set("content-type", "application/json;charset=UTF-8")
	req.Header.Set("device-id", "6ef53c6576d9facb853f94d3e43b325d")
	req.Header.Set("origin", "https://fanyi.caiyunapp.com")
	req.Header.Set("os-type", "web")
	req.Header.Set("os-version", "")
	req.Header.Set("referer", "https://fanyi.caiyunapp.com/")
	req.Header.Set("sec-ch-ua", `"Google Chrome";v="113", "Chromium";v="113", "Not-A.Brand";v="24"`)
	req.Header.Set("sec-ch-ua-mobile", "?0")
	req.Header.Set("sec-ch-ua-platform", `"Windows"`)
	req.Header.Set("sec-fetch-dest", "empty")
	req.Header.Set("sec-fetch-mode", "cors")
	req.Header.Set("sec-fetch-site", "cross-site")
	req.Header.Set("user-agent", "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/113.0.0.0 Safari/537.36")
	req.Header.Set("x-authorization", "token:qgemv4jr1y38jyq6vhvi")
	resp, err := client.Do(req)
	if err != nil {
		log.Fatal(err)
	}
	defer resp.Body.Close()
	bodyText, err := io.ReadAll(resp.Body)
	if err != nil {
		log.Fatal(err)
	}
	fmt.Printf("%s\n", bodyText)
}

3.生成request body

可以在浏览器中将响应的数据复制出来，就是响应体，一般都是Json数据格式

{"rc":0,"wiki":{},"dictionary":{"prons":{"en-us":"[h\u0259\u02c8lo]","en":"[\u02c8he\u02c8l\u0259u]"},"explanations":["int.\u5582;\u54c8\u7f57","n.\u5f15\u4eba\u6ce8\u610f\u7684\u547c\u58f0","v.\u5411\u4eba\u547c(\u5582)"],"synonym":["greetings","salutations"],"antonym":[],"wqx_example":[["say hello to","\u5411\u67d0\u4eba\u95ee\u5019,\u548c\u67d0\u4eba\u6253\u62db\u547c"],["Say hello to him for me . ","\u4ee3\u6211\u95ee\u5019\u4ed6\u3002"]],"entry":"hello","type":"word","related":[],"source":"wenquxing"}}

4.解析response body

得到json数据格式的响应体之后需要将其转为go的数据体，可以访问网址（oktools.net/json2go）将得到… 生成的代码如下:

type DictResponse struct {
	Rc int `json:"rc"`
	Wiki struct {
	} `json:"wiki"`
	Dictionary struct {
		Prons struct {
			EnUs string `json:"en-us"`
			En string `json:"en"`
		} `json:"prons"`
		Explanations []string `json:"explanations"`
		Synonym []string `json:"synonym"`
		Antonym []string `json:"antonym"`
		WqxExample [][]string `json:"wqx_example"`
		Entry string `json:"entry"`
		Type string `json:"type"`
		Related []interface{} `json:"related"`
		Source string `json:"source"`
	} `json:"dictionary"`
}

5. 打印结果

获得请求和响应的数据格式之后就可以输出结果了

defer resp.Body.Close()
	bodyText, err := ioutil.ReadAll(resp.Body)
	if err != nil {
		log.Fatal(err)
	}
	if resp.StatusCode != 200{
		log.Fatal("bad StatusCode:",resp.StatusCode,"body",string(bodyText))
	}
	var  dictResponse DictResponse
	err = json.Unmarshal(bodyText,&dictResponse)
	if err!=nil{
		log.Fatal(err)
	}
	fmt.Println(word, "UK:", dictResponse.Dictionary.Prons.En, "US:", dictResponse.Dictionary.Prons.EnUs)
	for _, item := range dictResponse.Dictionary.Explanations {
		fmt.Println(item)
	}

6.完善代码

通过命令行参数将要查询的内容传入

package main

import (
	"bytes"
	"encoding/json"
	"fmt"
	"io/ioutil"
	"log"
	"net/http"
	"os"
)
type DictRequest struct {
	TransType string `json:"trans_type"`
	Source    string `json:"source"`
	UserID    string `json:"user_id"`
}
type DictResponse struct {
	Rc int `json:"rc"`
	Wiki struct {
	} `json:"wiki"`
	Dictionary struct {
		Prons struct {
			EnUs string `json:"en-us"`
			En string `json:"en"`
		} `json:"prons"`
		Explanations []string `json:"explanations"`
		Synonym []string `json:"synonym"`
		Antonym []string `json:"antonym"`
		WqxExample [][]string `json:"wqx_example"`
		Entry string `json:"entry"`
		Type string `json:"type"`
		Related []interface{} `json:"related"`
		Source string `json:"source"`
	} `json:"dictionary"`
}
func query(word string) {
	client := &http.Client{}
	request := DictRequest{TransType:"en2zh",Source:word}
	buf,err := json.Marshal(request)
	if err != nil{
		log.Fatal(err)
	}
	var data = bytes.NewReader(buf)
	req, err := http.NewRequest("POST", "https://api.interpreter.caiyunai.com/v1/dict", data)
	if err != nil {
		log.Fatal(err)
	}
	req.Header.Set("authority", "api.interpreter.caiyunai.com")
	req.Header.Set("accept", "application/json, text/plain, */*")
	req.Header.Set("accept-language", "zh-CN,zh;q=0.9")
	req.Header.Set("app-name", "xy")
	req.Header.Set("content-type", "application/json;charset=UTF-8")
	req.Header.Set("device-id", "1a53fa69337149c272cc26767948c096")
	req.Header.Set("origin", "https://fanyi.caiyunapp.com")
	req.Header.Set("os-type", "web")
	req.Header.Set("os-version", "")
	req.Header.Set("referer", "https://fanyi.caiyunapp.com/")
	req.Header.Set("sec-ch-ua", `"Google Chrome";v="113", "Chromium";v="113", "Not-A.Brand";v="24"`)
	req.Header.Set("sec-ch-ua-mobile", "?0")
	req.Header.Set("sec-ch-ua-platform", `"Windows"`)
	req.Header.Set("sec-fetch-dest", "empty")
	req.Header.Set("sec-fetch-mode", "cors")
	req.Header.Set("sec-fetch-site", "cross-site")
	req.Header.Set("user-agent", "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/113.0.0.0 Safari/537.36")
	req.Header.Set("x-authorization", "token:qgemv4jr1y38jyq6vhvi")
	resp, err := client.Do(req)
	if err != nil {
		log.Fatal(err)
	}
	defer resp.Body.Close()
	bodyText, err := ioutil.ReadAll(resp.Body)
	if err != nil {
		log.Fatal(err)
	}
	if resp.StatusCode != 200{
		log.Fatal("bad StatusCode:",resp.StatusCode,"body",string(bodyText))
	}
	var  dictResponse DictResponse
	err = json.Unmarshal(bodyText,&dictResponse)
	if err!=nil{
		log.Fatal(err)
	}
	fmt.Println(word, "UK:", dictResponse.Dictionary.Prons.En, "US:", dictResponse.Dictionary.Prons.EnUs)
	for _, item := range dictResponse.Dictionary.Explanations {
		fmt.Println(item)
	}
}
func main(){
	if len(os.Args)!=2{
		fmt.Fprintf(os.Stderr,`usage:simpleDict Wordexample:simpleDict hello`)
		os.Exit(1)
	}
	word:=os.Args[1]
	query(word)
}

课后作业

（未完待续。。。。）