golang自动登录https连接并解析得到的json返回值

主要演示go语言自动登录HTPPS连接及cookie的使用，如何解析JSON数据等特性

https返回的json数据格式为

type item struct {
    Id, List_type, Severity            int
    list_type_string, Name, Expiration string
    list_type_name, Severity_name      string
}
type resData struct {
    Total_count, Total_page, Expect_page, Num_per_page int
    Sort_by, Sort_order                                string
    List                                               []item
}

注意结构体必须是大写字母开头的成员才会被json.Unmarshal(）处理到，对应的数据样例：

{
    "total_count" : 366,
    "total_page" : 1,
    "expect_page" : 1,
    "num_per_page" : 10000000,
    "sort_by" : "id",
    "sort_order" : "desc",
    "list" : [{ "id" : 3263, "list_type" : 2, "list_type_string" : "File", "name" : "4CDA46B428405E8A155A3AA32E4F25C8EA09B707", "severity" : 3, "expiration" : "11\/14\/2014 04:51:06", "list_type_name" : "File", "severity_name" : "High" }, { "id" : 3262, "list_type" : 2, "list_type_string" : "File", "name" : "ECC3F6D2CB227981C12038D620336617C8EC0B64", "severity" : 3, "expiration" : "11\/12\/2014 10:02:21", "list_type_name" : "File", "severity_name" : "High" } ] }

go源码如下

// https project main.go
package main

import (
    "crypto/tls"
    "encoding/json"
    "fmt"
    "io/ioutil"
    "net/http"
    "net/http/cookiejar"
    "net/url"
)

type item struct {
    Id, List_type, Severity            int
    list_type_string, Name, Expiration string
    list_type_name, Severity_name      string
}
type resData struct {
    Total_count, Total_page, Expect_page, Num_per_page int
    Sort_by, Sort_order                                string
    List                                               []item
}

func check(err error) {
    if err != nil {
        panic(err)
    }
}
func main() {

    //登录URL，即提供账号登录的URL
    loginUrl := "https://10.64.71.8/cgi-bin/logon.cgi"
    loginData := url.Values{"usrname": {"admin"}, "passwd": {"trend#11"}, "isCookieEnable": {"1"}}
    //目标URL，即需要访问的URL
    targetUrl := "https://10.64.71.8/php/blacklist_whitelist_query.php"
    targetData := url.Values{"action": {"query"}, "black_or_white": {"sandbox"},
        "expect_page": {"1"}, "num_per_page": {"10000000"},
        "list_type": {"99"}, "keyword": {""}, "sort_by": {"id"}, "sort_order": {"desc"}}

    var resp *http.Response
    var err error
    var data []byte
    tr := &http.Transport{
        TLSClientConfig:    &tls.Config{InsecureSkipVerify: true},
        DisableCompression: true,
    }
    client := &http.Client{Transport: tr}
    //启用cookie
    client.Jar, _ = cookiejar.New(nil)
    resp, err = client.PostForm(loginUrl, loginData)
    check(err)
    resp, err = client.PostForm(targetUrl, targetData)
    check(err)

    if data, err = ioutil.ReadAll(resp.Body); err == nil {
        fmt.Printf("%s\n", data)
    }
//解析返回的JSON数据
    var message resData
    err = json.Unmarshal(data, &message)
    check(err)

    fmt.Printf("%+v\n", message)
    fmt.Printf("%v\t%v\n", message.Total_count, message.List[0].Name)

}