Go语言实践-在线词典
1.介绍
在Goland输入一个单词,命令行中会显示这个单词的发音和注释。
2.步骤
1.先抓包并找到网站并获取其发送命令的URL
鼠标右键打开网页,点击检查
打开网络,我这里翻译为中文
点击dict发现发送的请求和要翻译的单词和翻译出来的词
注意观察是post请求
2.这个请求很复杂,直接用代码来构造很麻烦,所以我们可以用另一种简单的方式来生成请求
右键打卡dict,复制其cURL(bash)
把赋值的信息粘贴进去,并点击go复制下面生成的代码
复制代码到Goland
3.进行代码解读
1.首先了解一下json
构建结构体使其和json结构体格式相同
要对response创建结构体比较复杂
所以需要对其进行解读复制response的内容
打开这个工具网站:oktools.net/json2go
生成结构体转换嵌套
type AutoGenerated 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"`
}
经过加工最终生成
package main
import (
"bytes"
"encoding/json"
"fmt"
"io"
"log"
"net/http"
"os"
)
// 请求
type DictRequest struct {
TransType string `json:"trans_type"`
Source string `json:"source"`
UserID string `json:"user_id"`
}
// 响应
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 main() {
//检查命令行传入的参数个数(第一个参数是程序名称本身,第二个参数是传入的单词,因此必须是两个参数)
if len(os.Args) != 2 {
fmt.Fprintf(os.Stderr, `usage: simpleDict WORD example: simpleDict hello`)
os.Exit(1)
}
//将第二个命令行参数也就是单词传给变量 word
word := os.Args[1]
query(word)
}
// 将程序的主要代码封装为query()函数,传入要翻译的单词
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("cache-control", "no-cache")
req.Header.Set("content-type", "application/json;charset=UTF-8")
req.Header.Set("device-id", "b72e9f6cbb97432941b8adf317a17dee")
req.Header.Set("origin", "https://fanyi.caiyunapp.com")
req.Header.Set("os-type", "web")
req.Header.Set("os-version", "")
req.Header.Set("pragma", "no-cache")
req.Header.Set("referer", "https://fanyi.caiyunapp.com/")
req.Header.Set("sec-ch-ua", `"Not/A)Brand";v="99", "Google Chrome";v="115", "Chromium";v="115"`)
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/115.0.0.0 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)
}
//防御性编程
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("%#v\n", dictResponse)
fmt.Println(word, "UK:", dictResponse.Dictionary.Prons.En,
"US:", dictResponse.Dictionary.Prons.EnUs)
for _, item := range dictResponse.Dictionary.Explanations {
fmt.Println(item)
}
}