Go语言拼接URL路径的三种方法
目录
- JoinPath
- ResolveReference
- path.Join
- 参考
Go语言拼接URL路径有多种方法建议用ResolveReference。
JoinPath
JoinPath会把多个多个路径合并成一个路径,并且处理../和./,多个//合并成单个/。
package main import ( "fmt" "net/url" ) func main() { u1 := "http://example.com/directory/" u2 := "../../..//search?q=dotnet" u3 := "/dir1/dir2/search?q=dotnet" j1, _ := url.JoinPath(u1, u2) j2, _ := url.JoinPath(u1, u3) fmt.Println(j1) // http://example.com/search%3Fq=dotnet fmt.Println(j2) // http://example.com/directory/dir1/dir2/search%3Fq=dotnet }
ResolveReference
ResolveReference会处理绝对路径和相对路径。
package main import ( "fmt" "log" "net/url" ) func main() { u1, _ := url.Parse("../../..//search?q=dotnet") u2, _ := url.Parse("/dir1/dir2/search?q=dotnet") base, err := url.Parse("http://example.com/directory/") if err != nil { log.Fatal(err) } fmt.Println(base.ResolveReference(u1)) // http://example.com/search?q=dotnet fmt.Println(base.ResolveReference(u2)) // http://example.com/dir1/dir2/search?q=dotnet }
path.Join
path主要是对斜杠放个的路径。
package main import ( "fmt" "log" "net/url" "path" ) func main() { u, err := url.Parse("http://example.com/test/") if err != nil { log.Fatal(err) } u.Path = path.Join(u.Path, "../bar.html") s := u.String() fmt.Println(s) // http://example.com/bar.html }
参考
https://pkg.go.dev/net/url@go1.19beta1#JoinPath
http://doc.golang.ltd/pkg/net_url.htm
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