XMLParser 在读取 UTF8 字符时出现问题 [英] XMLParser has problems reading UTF8 characters

问题描述

我正在尝试按如下方式解析 XML

I am trying to parse an XML as follows

<CntyNtry>
    <EngNm>Virgin Islands (British)</EngNm>
    <FrNm>Vierges britanniques (les Îles)</FrNm>
    <A2Cd>VG</A2Cd>
    <A3Cd>VGB</A3Cd>
    <CtryNbr>92</CtryNbr>
</CntyNtry>

如您所见，某些字母上有一些重音.

As you can see, there are some accents on some of the letters.

我尝试使用以下代码解析 XML

I tried to parse the XML with following code

func parser(_ parser: XMLParser, didStartElement elementName: String, namespaceURI: String?, qualifiedName qName: String?, attributes attributeDict: [String : String] = [:]) {
    if elementName == Element.getXMLRecordElementTagName() {
        stack.push(Element.newObject())
        record.removeAll(keepingCapacity: false)
    } else if Element.getXMLRecordAttributeElementTagName().contains(elementName) {
        stackKey.push(Element.getNSManagedObjectAttributeName(fromXMLRecordElementTagName: elementName))
    }
}

func parser(_ parser: XMLParser, foundCharacters string: String) {
    let key = stackKey.pop()
    if key != nil {
        record[key!] = string
    }
}

func parser(_ parser: XMLParser, didEndElement elementName: String, namespaceURI: String?, qualifiedName qName: String?) {
    if elementName == Element.getXMLRecordElementTagName() {
        Element.add(object: record)
        record.removeAll(keepingCapacity: false)
    }
}

如果有人需要其余代码的详细信息，请告诉我，但基本上 record[key!] = string 应该能够读取 UTF8 字符.

If anybody needs the detail of the rest of the code, please let me know but basically record[key!] = string should be able to read the UTF8 characters.

当我在我的单元代码上测试数据时，出现以下错误，在重音字符串之后没有读取字符串.我已经尝试了所有其他带口音的数据，但还是一样的错误.

When I test the data on my unit code, I get following error, where the string is not read after the accent string. I have tried all other data with accents and it is same error.

XCTAssertEqual 失败:("Optional("Vierges britanniques (les")") 不等于 ("Optional("Vierges britanniques (les Îles)")") -

XCTAssertEqual failed: ("Optional("Vierges britanniques (les")") is not equal to ("Optional("Vierges britanniques (les Îles)")") -

我的单元测试代码错了吗?还是解析器有问题?

Is my unit test code wrong? or is there a problem in the parser?

func testImportDataCnty() {
    Country.delete()
    XCTAssertTrue(Country.count() == 0)
    XCTAssertTrue(importerCnty.importData())
    XCTAssertTrue(Country.count() > 0)

    let kor = Country.get(id: ["VGB"])?[0] as! Country
    XCTAssertEqual(kor.englishName, country2["englishName"] as? String)
    XCTAssertEqual(kor.frenchName, country2["frenchName"] as? String)
    //Test failed on the above row.
    XCTAssertEqual(kor.alpha2Code, country2["alpha2Code"] as? String)
    XCTAssertEqual(kor.alpha3Code, country2["alpha3Code"] as? String)
    XCTAssertEqual(kor.countryNumber, Int16(country2["countryNumber"] as! Int))
}

推荐答案

我已经通过如下更改代码解决了这个问题.如果字符串中有特殊字符，foundCharacter 解析器似乎会多次读取该字符串，因此我需要将它们全部追加.

I have solved the issue by changing my code as below. It seems that foundCharacter parser reads the string multiple times if there is a special character in the string, so I needed to append them all.

func parser(_ parser: XMLParser, foundCharacters string: String) {
    let key = stackKey.peek()
    if key != nil {
        if record[key!] != nil {
            record[key!] = record[key!]! + string
        } else {
            record[key!] = string
        }
    }
}

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