使用 xsdgen 解组 XML

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我正在尝试使用 golang 解析 xml 文件。

我使用 xsdgen 生成结构部分

我无法使用 xml.unmarshal(bytevalue, &data) 解析文件 我期望程序打印：grandtotalamount.value 这是 671.15，但它打印的是 0。

变量 data 似乎为空，因为这一行没有按我的预期工作： xml.unmarshal(bytevalue, &data)

我没有看到任何编译错误（或者我不知道在哪里可以找到它们）

我觉得我错过了一些东西，你能帮我吗？

xsd 文件：https://gist.github.com/hyperi0n/a5eb805d9f91de84d341ea75cfe6d1bf

xml 文件：

  
    
      urn:factur-x.eu:1p0:minimum
    
  
  
    fa-2017-0010
    380
    
      20171113
    
  
  
    
      
        au bon moulin
        
          99999999800010
        
        
          fr
        
        
          fr11999999998
        
      
      
        ma jolie boutique
        
          78787878400035
        
        
          fr
        
        
          fr19787878784
        
      
      
        po445
      
    
    
    
      eur
      
        624.90
        46.25
        671.15
        470.15
      
    
  

转到文件：

package main
    
    import (
        "encoding/xml"
        "fmt"
        "io/ioutil"
        "os"
    )
    
    type AmountType struct {
        Value      float64 `xml:",chardata"`
        CurrencyID string  `xml:"currencyID,attr,omitempty"`
    }
    
    // May be one of 1A, AD, AE, AF, AG, AI, AL, AM, AO, AQ, AR, AS, AT, AU, AW, AX, AZ, BA, BB, BD, BE, BF, BG, BH, BI, BJ, BL, BM, BN, BO, BQ, BR, BS, BT, BV, BW, BY, BZ, CA, CC, CD, CF, CG, CH, CI, CK, CL, CM, CN, CO, CR, CU, CV, CW, CX, CY, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, EH, ER, ES, ET, FI, FJ, FK, FM, FO, FR, GA, GB, GD, GE, GF, GG, GH, GI, GL, GM, GN, GP, GQ, GR, GS, GT, GU, GW, GY, HK, HM, HN, HR, HT, HU, ID, IE, IL, IM, IN, IO, IQ, IR, IS, IT, JE, JM, JO, JP, KE, KG, KH, KI, KM, KN, KP, KR, KW, KY, KZ, LA, LB, LC, LI, LK, LR, LS, LT, LU, LV, LY, MA, MC, MD, ME, MF, MG, MH, MK, ML, MM, MN, MO, MP, MQ, MR, MS, MT, MU, MV, MW, MX, MY, MZ, NA, NC, NE, NF, NG, NI, NL, NO, NP, NR, NU, NZ, OM, PA, PE, PF, PG, PH, PK, PL, PM, PN, PR, PS, PT, PW, PY, QA, RE, RO, RS, RU, RW, SA, SB, SC, SD, SE, SG, SH, SI, SJ, SK, SL, SM, SN, SO, SR, SS, ST, SV, SX, SY, SZ, TC, TD, TF, TG, TH, TJ, TK, TL, TM, TN, TO, TR, TT, TV, TW, TZ, UA, UG, UM, US, UY, UZ, VA, VC, VE, VG, VI, VN, VU, WF, WS, YE, YT, ZA, ZM, ZW
    type CountryIDContentType string
    
    type CrossIndustryInvoiceType struct {
        ExchangedDocumentContext    ExchangedDocumentContextType    `xml:"urn:un:unece:uncefact:data:standard:ReusableAggregateBusinessInformationEntity:100 ExchangedDocumentContext"`
        ExchangedDocument           ExchangedDocumentType           `xml:"urn:un:unece:uncefact:data:standard:ReusableAggregateBusinessInformationEntity:100 ExchangedDocument"`
        SupplyChainTradeTransaction SupplyChainTradeTransactionType `xml:"urn:un:unece:uncefact:data:standard:ReusableAggregateBusinessInformationEntity:100 SupplyChainTradeTransaction"`
    }
    
    // May be one of AED, AFN, ALL, AMD, ANG, AOA, ARS, AUD, AWG, AZN, BAM, BBD, BDT, BGN, BHD, BIF, BMD, BND, BOB, BOV, BRL, BSD, BTN, BWP, BYN, BZD, CAD, CDF, CHE, CHF, CHW, CLF, CLP, CNY, COP, COU, CRC, CUC, CUP, CVE, CZK, DJF, DKK, DOP, DZD, EGP, ERN, ETB, EUR, FJD, FKP, GBP, GEL, GHS, GIP, GMD, GNF, GTQ, GYD, HKD, HNL, HRK, HTG, HUF, IDR, ILS, INR, IQD, IRR, ISK, JMD, JOD, JPY, KES, KGS, KHR, KMF, KPW, KRW, KWD, KYD, KZT, LAK, LBP, LKR, LRD, LSL, LYD, MAD, MDL, MGA, MKD, MMK, MNT, MOP, MRU, MUR, MVR, MWK, MXN, MXV, MYR, MZN, NAD, NGN, NIO, NOK, NPR, NZD, OMR, PAB, PEN, PGK, PHP, PKR, PLN, PYG, QAR, RON, RSD, RUB, RWF, SAR, SBD, SCR, SDG, SEK, SGD, SHP, SLL, SOS, SRD, SSP, STN, SVC, SYP, SZL, THB, TJS, TMT, TND, TOP, TRY, TTD, TWD, TZS, UAH, UGX, USD, USN, UYI, UYU, UYW, UZS, VES, VND, VUV, WST, XAF, XAG, XAU, XBA, XBB, XBC, XBD, XCD, XDR, XOF, XPD, XPF, XPT, XSU, XTS, XUA, XXX, YER, ZAR, ZMW, ZWL
    type CurrencyCodeContentType string
    
    type DateTimeString struct {
        Value  string `xml:",chardata"`
        Format string `xml:"format,attr"`
    }
    
    type DateTimeType struct {
        DateTimeString DateTimeString `xml:"urn:un:unece:uncefact:data:standard:UnqualifiedDataType:100 DateTimeString"`
    }
    
    // May be one of 80, 81, 82, 83, 84, 130, 202, 203, 204, 211, 261, 262, 295, 296, 308, 325, 326, 380, 381, 383, 384, 385, 386, 387, 388, 389, 390, 393, 394, 395, 396, 420, 456, 457, 458, 527, 575, 623, 633, 751, 780, 935
    type DocumentCodeContentType string
    
    type DocumentContextParameterType struct {
        ID IDType `xml:"urn:un:unece:uncefact:data:standard:UnqualifiedDataType:100 ID,omitempty"`
    }
    
    type ExchangedDocumentContextType struct {
        BusinessProcessSpecifiedDocumentContextParameter DocumentContextParameterType `xml:"urn:un:unece:uncefact:data:standard:ReusableAggregateBusinessInformationEntity:100 BusinessProcessSpecifiedDocumentContextParameter,omitempty"`
        GuidelineSpecifiedDocumentContextParameter       DocumentContextParameterType `xml:"urn:un:unece:uncefact:data:standard:ReusableAggregateBusinessInformationEntity:100 GuidelineSpecifiedDocumentContextParameter"`
    }
    
    type ExchangedDocumentType struct {
        ID            IDType                  `xml:"urn:un:unece:uncefact:data:standard:UnqualifiedDataType:100 ID"`
        TypeCode      DocumentCodeContentType `xml:"urn:un:unece:uncefact:data:standard:QualifiedDataType:100 TypeCode"`
        IssueDateTime DateTimeType            `xml:"urn:un:unece:uncefact:data:standard:UnqualifiedDataType:100 IssueDateTime"`
    }
    
    type HeaderTradeAgreementType struct {
        BuyerReference               string                 `xml:"urn:un:unece:uncefact:data:standard:UnqualifiedDataType:100 BuyerReference,omitempty"`
        SellerTradeParty             TradePartyType         `xml:"urn:un:unece:uncefact:data:standard:ReusableAggregateBusinessInformationEntity:100 SellerTradeParty"`
        BuyerTradeParty              TradePartyType         `xml:"urn:un:unece:uncefact:data:standard:ReusableAggregateBusinessInformationEntity:100 BuyerTradeParty"`
        BuyerOrderReferencedDocument ReferencedDocumentType `xml:"urn:un:unece:uncefact:data:standard:ReusableAggregateBusinessInformationEntity:100 BuyerOrderReferencedDocument,omitempty"`
    }
    
    type HeaderTradeDeliveryType struct {
    }
    
    type HeaderTradeSettlementType struct {
        InvoiceCurrencyCode                             CurrencyCodeContentType                    `xml:"urn:un:unece:uncefact:data:standard:QualifiedDataType:100 InvoiceCurrencyCode"`
        SpecifiedTradeSettlementHeaderMonetarySummation TradeSettlementHeaderMonetarySummationType `xml:"urn:un:unece:uncefact:data:standard:ReusableAggregateBusinessInformationEntity:100 SpecifiedTradeSettlementHeaderMonetarySummation"`
    }
    
    type IDType struct {
        Value    string `xml:",chardata"`
        SchemeID string `xml:"schemeID,attr,omitempty"`
    }
    
    type LegalOrganizationType struct {
        ID IDType `xml:"urn:un:unece:uncefact:data:standard:UnqualifiedDataType:100 ID,omitempty"`
    }
    
    type ReferencedDocumentType struct {
        IssuerAssignedID IDType `xml:"urn:un:unece:uncefact:data:standard:UnqualifiedDataType:100 IssuerAssignedID"`
    }
    
    type SupplyChainTradeTransactionType struct {
        ApplicableHeaderTradeAgreement  HeaderTradeAgreementType  `xml:"urn:un:unece:uncefact:data:standard:ReusableAggregateBusinessInformationEntity:100 ApplicableHeaderTradeAgreement"`
        ApplicableHeaderTradeDelivery   HeaderTradeDeliveryType   `xml:"urn:un:unece:uncefact:data:standard:ReusableAggregateBusinessInformationEntity:100 ApplicableHeaderTradeDelivery"`
        ApplicableHeaderTradeSettlement HeaderTradeSettlementType `xml:"urn:un:unece:uncefact:data:standard:ReusableAggregateBusinessInformationEntity:100 ApplicableHeaderTradeSettlement"`
    }
    
    type TaxRegistrationType struct {
        ID IDType `xml:"urn:un:unece:uncefact:data:standard:UnqualifiedDataType:100 ID"`
    }
    
    type TradeAddressType struct {
        PostcodeCode           string               `xml:"urn:un:unece:uncefact:data:standard:UnqualifiedDataType:100 PostcodeCode,omitempty"`
        LineOne                string               `xml:"urn:un:unece:uncefact:data:standard:UnqualifiedDataType:100 LineOne,omitempty"`
        LineTwo                string               `xml:"urn:un:unece:uncefact:data:standard:UnqualifiedDataType:100 LineTwo,omitempty"`
        LineThree              string               `xml:"urn:un:unece:uncefact:data:standard:UnqualifiedDataType:100 LineThree,omitempty"`
        CityName               string               `xml:"urn:un:unece:uncefact:data:standard:UnqualifiedDataType:100 CityName,omitempty"`
        CountryID              CountryIDContentType `xml:"urn:un:unece:uncefact:data:standard:QualifiedDataType:100 CountryID"`
        CountrySubDivisionName string               `xml:"urn:un:unece:uncefact:data:standard:UnqualifiedDataType:100 CountrySubDivisionName,omitempty"`
    }
    
    type TradePartyType struct {
        Name                       string                `xml:"urn:un:unece:uncefact:data:standard:UnqualifiedDataType:100 Name"`
        SpecifiedLegalOrganization LegalOrganizationType `xml:"urn:un:unece:uncefact:data:standard:ReusableAggregateBusinessInformationEntity:100 SpecifiedLegalOrganization,omitempty"`
        PostalTradeAddress         TradeAddressType      `xml:"urn:un:unece:uncefact:data:standard:ReusableAggregateBusinessInformationEntity:100 PostalTradeAddress,omitempty"`
        SpecifiedTaxRegistration   []TaxRegistrationType `xml:"urn:un:unece:uncefact:data:standard:ReusableAggregateBusinessInformationEntity:100 SpecifiedTaxRegistration,omitempty"`
    }
    
    type TradeSettlementHeaderMonetarySummationType struct {
        TaxBasisTotalAmount AmountType `xml:"urn:un:unece:uncefact:data:standard:UnqualifiedDataType:100 TaxBasisTotalAmount"`
        TaxTotalAmount      AmountType `xml:"urn:un:unece:uncefact:data:standard:UnqualifiedDataType:100 TaxTotalAmount,omitempty"`
        GrandTotalAmount    AmountType `xml:"urn:un:unece:uncefact:data:standard:UnqualifiedDataType:100 GrandTotalAmount"`
        DuePayableAmount    AmountType `xml:"urn:un:unece:uncefact:data:standard:UnqualifiedDataType:100 DuePayableAmount"`
    }
    
    func main() {
    
        xmlFile, err := os.Open("invoice.xml")
        if err != nil {
            fmt.Println(err)
        }
        defer xmlFile.Close()
    
        byteValue, _ := ioutil.ReadAll(xmlFile)
    
        fmt.Println(string(byteValue))
    
        var data CrossIndustryInvoiceType

        xml.Unmarshal(byteValue, &data)
        
fmt.Println(data.SupplyChainTradeTransaction.ApplicableHeaderTradeSettlement.SpecifiedTradeSettlementHeaderMonetarySummation.GrandTotalAmount.Value)
    }

解决方案

我认为这与 Go Issue #13400 有关。命名空间前缀似乎存在问题。事实上，您可以在解组时忽略结构标记中的前缀。

以下代码应该适合您：

package main

import (
    "encoding/xml"
    "fmt"
    "io/ioutil"
    "log"
    "os"
)

type amounttype struct {
    value      float64 `xml:",chardata"`
    currencyid string  `xml:"currencyid,attr,omitempty"`
}

// may be one of 1a, ad, ae, af, ag, ai, al, am, ao, aq, ar, as, at, au, aw, ax, az, ba, bb, bd, be, bf, bg, bh, bi, bj, bl, bm, bn, bo, bq, br, bs, bt, bv, bw, by, bz, ca, cc, cd, cf, cg, ch, ci, ck, cl, cm, cn, co, cr, cu, cv, cw, cx, cy, cz, de, dj, dk, dm, do, dz, ec, ee, eg, eh, er, es, et, fi, fj, fk, fm, fo, fr, ga, gb, gd, ge, gf, gg, gh, gi, gl, gm, gn, gp, gq, gr, gs, gt, gu, gw, gy, hk, hm, hn, hr, ht, hu, id, ie, il, im, in, io, iq, ir, is, it, je, jm, jo, jp, ke, kg, kh, ki, km, kn, kp, kr, kw, ky, kz, la, lb, lc, li, lk, lr, ls, lt, lu, lv, ly, ma, mc, md, me, mf, mg, mh, mk, ml, mm, mn, mo, mp, mq, mr, ms, mt, mu, mv, mw, mx, my, mz, na, nc, ne, nf, ng, ni, nl, no, np, nr, nu, nz, om, pa, pe, pf, pg, ph, pk, pl, pm, pn, pr, ps, pt, pw, py, qa, re, ro, rs, ru, rw, sa, sb, sc, sd, se, sg, sh, si, sj, sk, sl, sm, sn, so, sr, ss, st, sv, sx, sy, sz, tc, td, tf, tg, th, tj, tk, tl, tm, tn, to, tr, tt, tv, tw, tz, ua, ug, um, us, uy, uz, va, vc, ve, vg, vi, vn, vu, wf, ws, ye, yt, za, zm, zw
type countryidcontenttype string

type crossindustryinvoicetype struct {
    exchangeddocumentcontext    exchangeddocumentcontexttype    `xml:"exchangeddocumentcontext"`
    exchangeddocument           exchangeddocumenttype           `xml:"exchangeddocument"`
    supplychaintradetransaction supplychaintradetransactiontype `xml:"supplychaintradetransaction"`
}

// may be one of aed, afn, all, amd, ang, aoa, ars, aud, awg, azn, bam, bbd, bdt, bgn, bhd, bif, bmd, bnd, bob, bov, brl, bsd, btn, bwp, byn, bzd, cad, cdf, che, chf, chw, clf, clp, cny, cop, cou, crc, cuc, cup, cve, czk, djf, dkk, dop, dzd, egp, ern, etb, eur, fjd, fkp, gbp, gel, ghs, gip, gmd, gnf, gtq, gyd, hkd, hnl, hrk, htg, huf, idr, ils, inr, iqd, irr, isk, jmd, jod, jpy, kes, kgs, khr, kmf, kpw, krw, kwd, kyd, kzt, lak, lbp, lkr, lrd, lsl, lyd, mad, mdl, mga, mkd, mmk, mnt, mop, mru, mur, mvr, mwk, mxn, mxv, myr, mzn, nad, ngn, nio, nok, npr, nzd, omr, pab, pen, pgk, php, pkr, pln, pyg, qar, ron, rsd, rub, rwf, sar, sbd, scr, sdg, sek, sgd, shp, sll, sos, srd, ssp, stn, svc, syp, szl, thb, tjs, tmt, tnd, top, try, ttd, twd, tzs, uah, ugx, usd, usn, uyi, uyu, uyw, uzs, ves, vnd, vuv, wst, xaf, xag, xau, xba, xbb, xbc, xbd, xcd, xdr, xof, xpd, xpf, xpt, xsu, xts, xua, xxx, yer, zar, zmw, zwl
type currencycodecontenttype string

type datetimestring struct {
    value  string `xml:",chardata"`
    format string `xml:"format,attr"`
}

type datetimetype struct {
    datetimestring datetimestring `xml:"datetimestring"`
}

// may be one of 80, 81, 82, 83, 84, 130, 202, 203, 204, 211, 261, 262, 295, 296, 308, 325, 326, 380, 381, 383, 384, 385, 386, 387, 388, 389, 390, 393, 394, 395, 396, 420, 456, 457, 458, 527, 575, 623, 633, 751, 780, 935
type documentcodecontenttype string

type documentcontextparametertype struct {
    id idtype `xml:"id,omitempty"`
}

type exchangeddocumentcontexttype struct {
    businessprocessspecifieddocumentcontextparameter documentcontextparametertype `xml:"businessprocessspecifieddocumentcontextparameter,omitempty"`
    guidelinespecifieddocumentcontextparameter       documentcontextparametertype `xml:"guidelinespecifieddocumentcontextparameter"`
}

type exchangeddocumenttype struct {
    id            idtype                  `xml:"id"`
    typecode      documentcodecontenttype `xml:"typecode"`
    issuedatetime datetimetype            `xml:"issuedatetime"`
}

type headertradeagreementtype struct {
    buyerreference               string                 `xml:"buyerreference,omitempty"`
    sellertradeparty             tradepartytype         `xml:"sellertradeparty"`
    buyertradeparty              tradepartytype         `xml:"buyertradeparty"`
    buyerorderreferenceddocument referenceddocumenttype `xml:"buyerorderreferenceddocument,omitempty"`
}

type headertradedeliverytype struct {
}

type headertradesettlementtype struct {
    invoicecurrencycode                             currencycodecontenttype                    `xml:"invoicecurrencycode"`
    specifiedtradesettlementheadermonetarysummation tradesettlementheadermonetarysummationtype `xml:"specifiedtradesettlementheadermonetarysummation"`
}

type idtype struct {
    value    string `xml:",chardata"`
    schemeid string `xml:"schemeid,attr,omitempty"`
}

type legalorganizationtype struct {
    id idtype `xml:"id,omitempty"`
}

type referenceddocumenttype struct {
    issuerassignedid idtype `xml:"issuerassignedid"`
}

type supplychaintradetransactiontype struct {
    applicableheadertradeagreement  headertradeagreementtype  `xml:"applicableheadertradeagreement"`
    applicableheadertradedelivery   headertradedeliverytype   `xml:"applicableheadertradedelivery"`
    applicableheadertradesettlement headertradesettlementtype `xml:"applicableheadertradesettlement"`
}

type taxregistrationtype struct {
    id idtype `xml:"id"`
}

type tradeaddresstype struct {
    postcodecode           string               `xml:"postcodecode,omitempty"`
    lineone                string               `xml:"lineone,omitempty"`
    linetwo                string               `xml:"linetwo,omitempty"`
    linethree              string               `xml:"linethree,omitempty"`
    cityname               string               `xml:"cityname,omitempty"`
    countryid              countryidcontenttype `xml:"countryid"`
    countrysubdivisionname string               `xml:"countrysubdivisionname,omitempty"`
}

type tradepartytype struct {
    name                       string                `xml:"name"`
    specifiedlegalorganization legalorganizationtype `xml:"specifiedlegalorganization,omitempty"`
    postaltradeaddress         tradeaddresstype      `xml:"postaltradeaddress,omitempty"`
    specifiedtaxregistration   []taxregistrationtype `xml:"specifiedtaxregistration,omitempty"`
}

type tradesettlementheadermonetarysummationtype struct {
    taxbasistotalamount amounttype `xml:"taxbasistotalamount"`
    taxtotalamount      amounttype `xml:"taxtotalamount,omitempty"`
    grandtotalamount    amounttype `xml:"grandtotalamount"`
    duepayableamount    amounttype `xml:"duepayableamount"`
}

func main() {
    xmlfile, err := os.open("invoice.xml")
    if err != nil {
        log.fatalln(err)
    }

    byted, err := ioutil.readall(xmlfile)
    if err != nil {
        log.fatalln(err)
    }
    xmlfile.close()

    var data crossindustryinvoicetype
    if err := xml.unmarshal(byted, &data); err != nil {
        log.fatalln(err)
    }

    fmt.printf("%v\n", data.supplychaintradetransaction.applicableheadertradesettlement.specifiedtradesettlementheadermonetarysummation.grandtotalamount.value)
}

输出：

671.15

当我使用xsdgen生成iso20022的相关go代码时，我遇到了同样的问题。应该是xsdgen包里面的一些事情。我已阅读有关 xsdgen 配置的所有选项，但没有选项可以忽略使用 xmltag 添加命名空间。

您可能会专注于 xsdgen 包的实现，或者只是在生成的代码的基础上手动省略额外的命名空间。

本篇关于《使用 xsdgen 解组 XML》的介绍就到此结束啦，但是学无止境，想要了解学习更多关于Golang的相关知识，请关注golang学习网公众号！