How Can I Effectively Handle SOAP Requests and Responses in Go Without Native WSDL Support?

WSDL/SOAP Support in Go

While Go lacks explicit support for WSDL, it does provide options for working directly with SOAP requests.

SOAP Encoding and Decoding

The standard encoding/xml package in Go may not be sufficient for SOAP. This is because SOAP requires specific XML attributes, such as xsi:type="xsd:string" on string tags.

To address this limitation, the github.com/webconnex/xmlutil package has been developed. It provides enhanced encoding and decoding capabilities for SOAP, including support for namespaces and custom XML attributes.

Sample SOAP Implementation

The following code snippet illustrates how to use xmlutil to encode and decode SOAP requests:

package main

import (
    "bytes"
    "fmt"
    "github.com/webconnex/xmlutil"
    "log"
)

type Envelope struct {
    Body `xml:"soap:"`
}

type Body struct {
    Msg interface{}
}

type MethodCall struct {
    One string
    Two string
}

type MethodCallResponse struct {
    Three string
}

func main() {
    x := xmlutil.NewXmlUtil()
    // Register namespaces and types
    x.RegisterNamespace("http://www.w3.org/2001/XMLSchema-instance", "xsi")
    x.RegisterNamespace("http://www.w3.org/2001/XMLSchema", "xsd")
    x.RegisterNamespace("http://www.w3.org/2003/05/soap-envelope", "soap")

    // Encode the SOAP request
    env := &Envelope{Body{MethodCall{
        One: "one",
        Two: "two",
    }}}
    buf := new(bytes.Buffer)
    enc := x.NewEncoder(buf)
    if err := enc.Encode(env); err != nil {
        log.Fatal(err)
    }

    // Decode the SOAP response
    dec := x.NewDecoder(bytes.NewBufferString(`<?xml version="1.0" encoding="utf-8"?>
    <soap:Envelope>
        <soap:Body>
            <MethodCallResponse>
                <Three>three</Three>
            </MethodCallResponse>
        </soap:Body>
    </soap:Envelope>`))
    var resp MethodCallResponse
    if err := dec.DecodeElement(&resp); err != nil {
        log.Fatal(err)
    }
    fmt.Println(resp)
}

The above is the detailed content of How Can I Effectively Handle SOAP Requests and Responses in Go Without Native WSDL Support?. For more information, please follow other related articles on the PHP Chinese website!