使用 xml2js parseString 返回值

Posted 2023-03-07

【中文标题】使用 xml2js parseString 返回值

【英文标题】：use xml2js parseString return value

【发布时间】：2019-07-28 23:00:01

【问题描述】：

xml = '<?xml version="1.0" encoding="utf-8"?><soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema"><soap:Body><GetCurrentRoomStatusGraphResponse xmlns="www.example.com"><GetCurrentRoomStatusGraphResult><RoomStatusGraphItem><RoomID>3</RoomID><ChainID>1</ChainID><RoomNo>8888</RoomNo><RoomTypeID>1</RoomTypeID><RoomTypeCode>DF</RoomTypeCode><RoomTypeName>standard room</RoomTypeName><RoomRate>0.0000</RoomRate><Floor>2</Floor><FolioID>123456</FolioID><Guest><RoomStatusGuest><Name>Jon Snow</Name><Sex>1</Sex><VipTypeID>0</VipTypeID></RoomStatusGuest></Guest><Arrival>2019-03-07T13:43:00</Arrival><Depart>2019-03-08T12:00:00</Depart><IsDepart>false</IsDepart><IsTimeRoom>false</IsTimeRoom><Surreptitious>false</Surreptitious><CheckInState>CheckIn</CheckInState><ClentState>NoClean</ClentState><HouseKeepState>EnableSaleRoom</HouseKeepState><CheckRoomFlag>false</CheckRoomFlag><IsBookInRoom>false</IsBookInRoom><IsFreeRoom>false</IsFreeRoom><IsInnerRoom>true</IsInnerRoom><IsThirdOTA>false</IsThirdOTA><IsAssociationRoom>false</IsAssociationRoom><RoomRemark /><FolioInnerRemark /><FolioRemark /><AddtionalFlag><int>1</int></AddtionalFlag><IsReserve>false</IsReserve><ClearRoomType>3</ClearRoomType><ClearRoomTypeName>normal</ClearRoomTypeName><CheckOutID>0</CheckOutID><CheckOutState>None</CheckOutState><MilkMarketStatus>0</MilkMarketStatus></RoomStatusGraphItem></GetCurrentRoomStatusGraphResult></GetCurrentRoomStatusGraphResponse></soap:Body></soap:Envelope>'

var parseString = require('xml2js').parseString;
parseString(xml, function (err, result) 
    console.dir(result);   //print object user console.log (util.inspect(result, false,null)) can print all value
);

我想要另一个函数使用这个值，如何返回这个值？ 像这样

parseString(xml, function (err, result) 
        return result
    );

【参考方案1】：

您可以使用 async / await 模式来执行此操作，例如：

const parseString = require('xml2js').parseString;
const xmlInput = '<?xml version="1.0" encoding="utf-8"?><soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema"><soap:Body><GetCurrentRoomStatusGraphResponse xmlns="www.example.com"><GetCurrentRoomStatusGraphResult><RoomStatusGraphItem><RoomID>3</RoomID><ChainID>1</ChainID><RoomNo>8888</RoomNo><RoomTypeID>1</RoomTypeID><RoomTypeCode>DF</RoomTypeCode><RoomTypeName>standard room</RoomTypeName><RoomRate>0.0000</RoomRate><Floor>2</Floor><FolioID>123456</FolioID><Guest><RoomStatusGuest><Name>Jon Snow</Name><Sex>1</Sex><VipTypeID>0</VipTypeID></RoomStatusGuest></Guest><Arrival>2019-03-07T13:43:00</Arrival><Depart>2019-03-08T12:00:00</Depart><IsDepart>false</IsDepart><IsTimeRoom>false</IsTimeRoom><Surreptitious>false</Surreptitious><CheckInState>CheckIn</CheckInState><ClentState>NoClean</ClentState><HouseKeepState>EnableSaleRoom</HouseKeepState><CheckRoomFlag>false</CheckRoomFlag><IsBookInRoom>false</IsBookInRoom><IsFreeRoom>false</IsFreeRoom><IsInnerRoom>true</IsInnerRoom><IsThirdOTA>false</IsThirdOTA><IsAssociationRoom>false</IsAssociationRoom><RoomRemark /><FolioInnerRemark /><FolioRemark /><AddtionalFlag><int>1</int></AddtionalFlag><IsReserve>false</IsReserve><ClearRoomType>3</ClearRoomType><ClearRoomTypeName>normal</ClearRoomTypeName><CheckOutID>0</CheckOutID><CheckOutState>None</CheckOutState><MilkMarketStatus>0</MilkMarketStatus></RoomStatusGraphItem></GetCurrentRoomStatusGraphResult></GetCurrentRoomStatusGraphResponse></soap:Body></soap:Envelope>';

function parseXml(xml) 
    return new Promise((resolve, reject) => 
        parseString(xml, (err, result) => 
            if (err) 
                reject(err);
             else 
                resolve(result);
            
        );
    );


function processResult(result) 
    console.log("processResult: result: ", result);


async function testXmlParse(xml) 
    try 
        let result = await parseXml(xml);
        // Now that you have the result you can do further processing, write to file etc.
        processResult(result);
     catch (err) 
        console.error("parseXml failed: ", err);
    


testXmlParse(xmlInput);

【参考方案2】：

你可以使用short方法

import  parseStringPromise  from 'xml2js';


xmlresponse = `<soap:Envelope
        xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/"
        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
        xmlns:xsd="http://www.w3.org/2001/XMLSchema">
        <soap:Header>
            <QAInformation
                xmlns="http://www.qas.com/OnDemand-2011-03">
                <StateTransition>SearchResults</StateTransition>
                <CreditsUsed>1</CreditsUsed>
            </QAInformation>
        </soap:Header>
        <soap:Body>
            <Address
                xmlns="http://www.qas.com/OnDemand-2011-03">
                <QAAddress DPVStatus="DPVNotConfigured">
                    <AddressLine LineContent="None">
                        <Label />
                        <Line>Commonwealth Bank Building</Line>
                    </AddressLine>
                    <AddressLine LineContent="None">
                        <Label />
                        <Line>L 10 71-89 Adelaide St</Line>
                    </AddressLine>
                    <AddressLine LineContent="None">
                        <Label />
                        <Line />
                    </AddressLine>
                    <AddressLine>
                        <Label>Locality</Label>
                        <Line>BRISBANE CITY</Line>
                    </AddressLine>
                    <AddressLine>
                        <Label>State code</Label>
                        <Line>QLD</Line>
                    </AddressLine>
                    <AddressLine>
                        <Label>Postcode</Label>
                        <Line>4000</Line>
                    </AddressLine>
                    <AddressLine>
                        <Label>Country</Label>
                        <Line>AUSTRALIA</Line>
                    </AddressLine>
                    <AddressLine LineContent="Ancillary">
                        <Label>DPID/DID</Label>
                        <Line>87902264</Line>
                    </AddressLine>
                </QAAddress>
            </Address>
        </soap:Body>
    </soap:Envelope>`

        let convert = await parseStringPromise(xmlresponse);
        convert = (JSON.parse(JSON.stringify(convert)));

        console.log(convert['soap:Envelope']['soap:Body'][0]['Address'][0]['QAAddress'][0]['AddressLine']);

你会有这样的东西

[
  
    '$':  LineContent: 'None' ,
    Label: [ '' ],
    Line: [ 'Commonwealth Bank Building' ]
  ,
  
    '$':  LineContent: 'None' ,
    Label: [ '' ],
    Line: [ 'L 10 71-89 Adelaide St' ]
  ,
   '$':  LineContent: 'None' , Label: [ '' ], Line: [ '' ] ,
   Label: [ 'Locality' ], Line: [ 'BRISBANE CITY' ] ,
   Label: [ 'State code' ], Line: [ 'QLD' ] ,
   Label: [ 'Postcode' ], Line: [ '4000' ] ,
   Label: [ 'Country' ], Line: [ 'AUSTRALIA' ] ,
  
    '$':  LineContent: 'Ancillary' ,
    Label: [ 'DPID/DID' ],
    Line: [ '87902264' ]
  
]