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Asked: 2020-04-23 06:31:26 +0800 CST 2020-04-23 06:31:26 +0800 CST

它不验证 DTD 中的 XML：内容模型不允许元素

  • 772

它告诉我银行的内容格式正确但未经验证：

第 26 行第 8 列错误：内容模型“帐户、客户、存款人）*”不允许元素“帐户”

我知道 DTD 是由我解释的并且可能是错误的，但在 XML 中信息很好。

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE bank [
<!ELEMENT bank (account,customer,depositor)*>
<!ELEMENT account (#PCDATA)>
  <!ATTLIST account account-number ID #REQUIRED>
  <!ATTLIST account branch-name (Downtown|Perryridge|Brighton) #REQUIRED>
  <!ATTLIST account balance NMTOKEN #REQUIRED>
<!ELEMENT customer (#PCDATA)>
  <!ATTLIST customer customer-name ID #REQUIRED>
  <!ATTLIST customer customer-street CDATA #REQUIRED>
  <!ATTLIST customer customer-city CDATA #REQUIRED>
<!ELEMENT depositor (#PCDATA)>
  <!ATTLIST depositor account-number IDREF #REQUIRED>
  <!ATTLIST depositor customer-name IDREF #REQUIRED>
] >

<bank>
<account account-number="A-101" branch-name="Downtown" balance="500"></account>
<account account-number="A-102" branch-name="Perryridge" balance="400"></account>
<account account-number="A-201" branch-name="Brighton" balance="900"></account>
<customer customer-name="Johnson" customer-street="Alma" customer-city="Palo Alto"></customer>
<customer customer-name="Hayes" customer-street="Main" customer-city="Harrison"></customer>
<depositor account-number="A-101" customer-name="Johnson"></depositor>
<depositor account-number="A-201" customer-name="Johnson"></depositor>
<depositor account-number="A-102" customer-name="Hayes"></depositor>
</bank>
xml

2 Answers

  1. 我已经通过几个在线验证器传递了文档，没有找到你提到的错误，表明 XML 是有效的。

    为了进行另一个级别的测试，我将 XML 转换为 JSON，结果是正确的 JSON：

    {
    "bank": {
        "account": [
            {
                "_account-number": "A-101",
                "_branch-name": "Downtown",
                "_balance": "500"
            },
            {
                "_account-number": "A-102",
                "_branch-name": "Perryridge",
                "_balance": "400"
            },
            {
                "_account-number": "A-201",
                "_branch-name": "Brighton",
                "_balance": "900"
            }
        ],
        "customer": [
            {
                "_customer-name": "Johnson",
                "_customer-street": "Alma",
                "_customer-city": "Palo Alto"
            },
            {
                "_customer-name": "Hayes",
                "_customer-street": "Main",
                "_customer-city": "Harrison"
            }
        ],
        "depositor": [
            {
                "_account-number": "A-101",
                "_customer-name": "Johnson"
            },
            {
                "_account-number": "A-201",
                "_customer-name": "Johnson"
            },
            {
                "_account-number": "A-102",
                "_customer-name": "Hayes"
            }
        ]
    }
}
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  2. Best Answer

    可能有问题的 DTD 恰恰是账户、客户和存款人的实例可能不止一个（+）。

    <?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE bank [
<!ELEMENT bank (account+,customer+,depositor+)>
<!ELEMENT account  EMPTY>
   <!ATTLIST account account-number ID #REQUIRED>
   <!ATTLIST account branch-name (Downtown|Perryridge|Brighton) #REQUIRED>
   <!ATTLIST account balance NMTOKEN #REQUIRED>
<!ELEMENT customer  EMPTY>
   <!ATTLIST customer customer-name ID #REQUIRED>
   <!ATTLIST customer customer-street CDATA #REQUIRED>
   <!ATTLIST customer customer-city NMTOKENS #REQUIRED>
<!ELEMENT depositor  EMPTY>
   <!ATTLIST depositor account-number IDREF #REQUIRED>
   <!ATTLIST depositor customer-name IDREF #REQUIRED>
   ] >
    • 0