Golang urlencode与urldecode编码解码

概述

一、urlencode

golang下可以使用net/url模块实现urlencode和urldecode操作。具体实现的函数为和，代码如下：

package main
import(    "fmt"
    "net/url")
func main()  {    var urlStr string = "运维之路"
    escapeUrl := (urlStr)
    ("编码:",escapeUrl)
    enEscapeUrl, _ := (escapeUrl)
    ("解码:",enEscapeUrl)
}

如果涉及到多个参数转码的，这在get和post请求中都有，比如id=100&site=这样的。可以在通过进行增加后转码，发下：

package main
import (
	"fmt"
	"net/url"
)
func main() {
	params := {}
	("name", "@Rajeev")
	("phone", "[phone]")
	(())
}
#输出：
name=%40Rajeev&phone=%2B919999999999

同样的，我们通过url的其他函数处理操作过后，一个典型的get请求的URL如下：

package main
import (
	"fmt"
	"net/url"
)
func main() {
	// Let's start with a base url
	baseUrl, err := ("")
	if err != nil {
		("Malformed URL: ", ())
		return
	}
	// Add a Path Segment (Path segment is automatically escaped)
	 += "path with?reserved characters"
	// Prepare Query Parameters
	params := {}
	("q", "Hello World")
	("u", "@rajeev")
	// Add Query Parameters to the URL
	 = () // Escape Query Parameters
	("Encoded URL is %q
", ())
}
#输出结果
Encoded URL is "/path%20with%3Freserved%20characters?q=Hello+World&u=%40rajeev"

二、urldecode

简单的url解码，直接使用Unescape就可以了，如下：

package main
import (
	"fmt"
	"log"
	"net/url"
)
func main() {
	encodedValue := "Hell%C3%B6+W%C3%B6rld%40Golang"
	decodedValue, err := (encodedValue)
	if err != nil {
		(err)
		return
	}
	(decodedValue)
}

带form 参数，就像上面提到的"param1=value1¶m2=value2"这种格式的可以使用()参数解析成map[string][]string格式，如下：

package main
import (
	"fmt"
	"log"
	"net/url"
)
func main() {
	queryStr := "name=Rajeev%20Singh&phone=%2B9199999999&phone=%2B628888888888"
	params, err := (queryStr)
	if err != nil {
		(err)
		return
	}
	("Query Params: ")
	for key, value := range params {
		("  %v = %v
", key, value)
	}
}
#其输出为：
Query Params:
  name = [Rajeev Singh]
  phone = [[phone] [phone]]

一个get请求类，后面带参数的URL，可以通过如下方式解析并解码

package main
import (
	"fmt"
	"log"
	"net/url"
)
func main() {
	u, err := ("/person?name=Rajeev%20Singh&phone=%2B919999999999&phone=%2B628888888888")
	if err != nil {
		(err)
		return
	}
	("Scheme: ", )
	("Host: ", )
	queries := ()
	("Query Strings: ")
	for key, value := range queries {
		("  %v = %v
", key, value)
	}
	("Path: ", )
}
# 输出如下：
Scheme:  https
Host:  
Query Strings:
  phone = [[phone] [phone]]
  name = [Rajeev Singh]
Path:  /person