Golang 自己封装下http get和post
封装
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 | package helper import ( "encoding/json" "io" "io/ioutil" "net/http" "net/url" "strings" ) type JsonHttpClientHelper struct { client *http.Client } func NewHttpClientHelper() *JsonHttpClientHelper { return &JsonHttpClientHelper{ client: &http.Client{}, } } func NewHttpClientHelperFromClient(client *http.Client) *JsonHttpClientHelper { return &JsonHttpClientHelper{ client: client, } } // Get // @Description: 发起Get请求 // @receiver clientHelper // @param urlPath url请求绝对路径 https://www.***.com/users // @param headers http请求头 // @param params url中附带的参数信息,最后会拼接到绝对路径上 如: https://www.***.com/users?name=u&age=18 // @return string 请求结果的字符串,推荐为 json格式 // @return error 请求发生的错误,需要捕获 // func (clientHelper *JsonHttpClientHelper) Get(urlPath string, headers, params map [string]string) (string, error) { //init url params requestUrl, err := makeRequestUrl(urlPath, params) if err != nil { return "" , err } req, err := makeRequest(requestUrl, headers, "GET" , nil) if err != nil { return "" , err } response, err := clientHelper.client.Do(req) if err != nil { return "" , err } defer response.Body.Close() //read from response b, err := ioutil.ReadAll(response.Body) if err != nil { return "" , err } return string(b), nil } func makeRequest(requestUrl *url.URL, headers map [string]string, method string, body io.Reader) (*http.Request, error) { req, err := http.NewRequest(method, requestUrl.String(), body) if err != nil { return nil, err } //set header for key, value := range headers { req.Header.Add(key, value) } return req, nil } func makeRequestUrl(urlPath string, params map [string]string) (*url.URL, error) { urlParams := url.Values{} for key, value := range params { urlParams.Set(key, value) } requestURI, err := url.ParseRequestURI(urlPath) if err != nil { return nil, err } requestURI.RawQuery = urlParams.Encode() return requestURI, nil } // Post // @Description: 发起POST请求 // @receiver clientHelper // @param urlPath url请求绝对路径 https://www.***.com/users // @param data 请求时需要传输的body // @param headers http请求头 Content-Type只能为 application/x-www-form-urlencoded 或 application/json // @param urlParams url中附带的参数信息,最后会拼接到绝对路径上 如: https://www.***.com/users?name=u&age=18 // @param bodyParams Content-Type为application/x-www-form-urlencoded 特殊片段 // @return string 请求结果的字符串,推荐为 json格式 // @return error 请求发生的错误,需要捕获 // func (clientHelper *JsonHttpClientHelper) Post(urlPath string, data interface {}, headers, urlParams, bodyParams map [string]string) (string, error) { //init url urlParams requestUrl, err := makeRequestUrl(urlPath, urlParams) if err != nil { return "" , err } var req *http.Request if isJsonHttp(headers) { bodyJsonStr, err := convertDataToJson(data) if err != nil { return "" , err } req, err = makeRequest(requestUrl, headers, "POST" , strings.NewReader(bodyJsonStr)) } else { bodyUrlValues := makeRequestBodyForFormUpload(bodyParams) req, err = makeRequest(requestUrl, headers, "POST" , strings.NewReader(bodyUrlValues.Encode())) if err != nil { return "" , err } } response, err := clientHelper.client.Do(req) if err != nil { return "" , err } defer response.Body.Close() //read from response b, err := ioutil.ReadAll(response.Body) if err != nil { return "" , err } return string(b), nil } func makeRequestBodyForFormUpload(maps map [string]string) *url.Values { values := url.Values{} if maps != nil { for key, value := range maps { values.Set(key, value) } } return &values } func isJsonHttp(headers map [string]string) bool { v, ok := headers[ "Content-Type" ] if ok && v == "application/json" { return true } if !ok { return true } return false } func convertDataToJson(data interface {}) (string, error) { bodyJsonByte, err := json.Marshal(data) if err != nil { return "" , err } bodyJsonStr := string(bodyJsonByte) if bodyJsonStr == "" || bodyJsonStr == "null" || bodyJsonStr == "NULL" || bodyJsonStr == "nil" { bodyJsonStr = "{}" } return bodyJsonStr, nil } |
调用demo
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 | package test import ( "fmt" "hello/src/helper" "testing" ) func TestHttpClient(t *testing.T) { params := make( map [string]string, 10) params[ "number" ] = "99999" resultJson, err := helper.NewHttpClientHelper().Post( "http://127.0.0.1:6789/ping/call" , nil, nil, params,nil) if err != nil { // fmt.Println(err.Error()) } else { fmt.Println(resultJson) } } |
这样不需要自己每次都填充 httpHeader httpBody之类的
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