java为什么会抛出这个SAXParsexException？

Question

我对这个问题有点不知所措。我正在编写一小段代码，根据相应的XSD模式验证XML文件。为了进行测试，我向它传递了一个有效的XML文件（由Netbeans使用的任何东西验证）。令我懊恼的是，我收到了以下错误消息：

org。xml。萨克斯。SAXS异常；cvc英语教学。1:找不到元素“map”的声明

这很奇怪，因为Netbeans发现元素“map”的声明很好。我知道相对文件路径有时会有问题，所以我用绝对路径代替。结果：同样的问题

因此，我只能假设SAXParser不使用xsi:schemaLocation属性来确定模式文件

有人知道我为什么要经历这种行为吗

以下是SSCCE：

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.transform.Source;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamSource;
import javax.xml.validation.Schema;
import javax.xml.validation.SchemaFactory;
import javax.xml.validation.Validator;
import org.w3c.dom.Document;
import org.xml.sax.SAXException;


public class ValidatorTest {

    public static void main(String[] args) {
        DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
        Document doc = null;
        try {
            DocumentBuilder db = dbf.newDocumentBuilder();
            doc = db.parse(new FileInputStream(new File(args[0])));
        } catch (Throwable ex) {
            ex.printStackTrace();
            System.exit(1);
        }
        SchemaFactory sf = SchemaFactory.newInstance("http://www.w3.org/2001/XMLSchema");
        Schema schema = null;
        try {
            schema = sf.newSchema(new StreamSource(new File(args[1])));
        } catch (SAXException ex) {
            ex.printStackTrace();
            System.exit(1);
        }
        Source source = new DOMSource(doc);
        Validator validator = schema.newValidator();
        try {
            validator.validate(source);
            System.out.println("SUCESS!");
        } catch (SAXException ex) {
            ex.printStackTrace();
            System.out.println("FAIL!");
        } catch (IOException ex) {
            ex.printStackTrace();
            System.exit(1);
        }
    }
}

我的XML：

<?xml version="1.0" encoding="UTF-8"?>
<map id="testMap" name="Test Map" xmlns="zorkCloneMapTypes"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="zorkCloneMapTypes /home/max/NetBeanzWorkspace/ZorkClone/src/main/resources/maps/betterMaps.xsd">
    <room id="testingGrounds" name="Testing Grounds" posX="0" posY="1">
        <type>basic</type>
        <description>A dusty arena, enclosed in a circular, wooden fence.  Clearly designed for practicing combat.  There are red blood spatters in the sand.</description>
        <passageNorth>true</passageNorth>
        <passageEast>false</passageEast>
        <passageSouth>false</passageSouth>
        <passageWest>false</passageWest>
        <enemies>
            <enemy>
                <name>Training Master</name>
                <type>Basic</type>
                <description>A Training Master. He will not let you pass until you defeat him in combat.</description>
                <level>1</level>
            </enemy>
        </enemies>
        <containers>
            <container locked="false">
                <name>Equipment locker.</name>
                <description>Equipment locker.</description>
                <level>5</level>
            </container>
            <container locked="false">
                <name>Equipment locker.</name>
                <description>Equipment locker.</description>
                <level>5</level>
            </container>
        </containers>
    </room>
    <transferRoom id="start" name="Starting Map" posX="0" posY="0">
        <type>transfer</type>
        <description>The starting room for the game.</description>
        <transferID>testMap.testingGrounds</transferID>
        <passageNorth>false</passageNorth>
        <passageEast>false</passageEast>
        <passageSouth>true</passageSouth>
        <passageWest>false</passageWest>
        <enemies/>
        <containers/>
    </transferRoom>
</map>

还有我的XSD：

    <?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"
           xmlns="zorkCloneMapTypes"
           targetNamespace="zorkCloneMapTypes"
           elementFormDefault="qualified">
  <xs:element name="map">
    <xs:complexType>
      <xs:sequence>
    <xs:element minOccurs="0" maxOccurs="unbounded" ref="room"/>
    <xs:element minOccurs="1" maxOccurs="unbounded" ref="transferRoom"/>
      </xs:sequence>
      <xs:attribute name="id" type="xs:ID" use="required"/>
      <xs:attribute name="name" type="xs:string" use="required"/>
    </xs:complexType>
  </xs:element>
  <xs:element name="transferRoom">
    <xs:complexType>
      <xs:sequence>
    <xs:element ref="type"/>
    <xs:element ref="description"/>
    <xs:element ref="transferID"/>
    <xs:element ref="passageNorth"/>
    <xs:element ref="passageEast"/>
    <xs:element ref="passageSouth"/>
    <xs:element ref="passageWest"/>
    <xs:element minOccurs="0" maxOccurs="unbounded" ref="enemies"/>
    <xs:element minOccurs="0" maxOccurs="unbounded" ref="containers"/>
      </xs:sequence>
      <xs:attribute name="name" use="required" type="xs:string"/>
      <xs:attribute name="id" use="required" type="xs:ID"/>
      <xs:attribute name="posX" use="required" type="xs:string"/>
      <xs:attribute name="posY" use="required" type="xs:string"/>
    </xs:complexType>
  </xs:element>
  <xs:element name="room">
    <xs:complexType>
      <xs:sequence>
    <xs:element ref="type"/>
    <xs:element ref="description"/>
    <xs:element ref="passageNorth"/>
    <xs:element ref="passageEast"/>
    <xs:element ref="passageSouth"/>
    <xs:element ref="passageWest"/>
    <xs:element minOccurs="0" maxOccurs="unbounded" ref="enemies"/>
    <xs:element minOccurs="0" maxOccurs="unbounded" ref="containers"/>
      </xs:sequence>
      <xs:attribute name="name" use="required" type="xs:string"/>
      <xs:attribute name="id" use="required" type="xs:ID"/>
      <xs:attribute name="posX" use="required" type="xs:string"/>
      <xs:attribute name="posY" use="required" type="xs:string"/>
    </xs:complexType>
  </xs:element>
  <xs:element name="containers">
    <xs:complexType>
      <xs:sequence>
    <xs:element minOccurs="0" maxOccurs="unbounded" ref="container"/>
      </xs:sequence>
    </xs:complexType>
  </xs:element>
  <xs:element name="enemies">
    <xs:complexType>
      <xs:sequence>
    <xs:element minOccurs="0" maxOccurs="unbounded" ref="enemy"/>
      </xs:sequence>
    </xs:complexType>
  </xs:element>
  <xs:element name="container">
    <xs:complexType>
      <xs:sequence>
    <xs:element ref="name"/>
    <xs:element ref="description"/>
    <xs:element ref="level"/>
      </xs:sequence>
      <xs:attribute name="locked" default="false" type="xs:boolean"/>
    </xs:complexType>
  </xs:element>
  <xs:element name="enemy">
    <xs:complexType>
      <xs:sequence>
    <xs:element ref="name"/>
    <xs:element ref="type"/>
    <xs:element ref="description"/>
    <xs:element ref="level"/>
      </xs:sequence>
    </xs:complexType>
  </xs:element>
  <xs:element name="name" type="xs:string"/>
  <xs:element name="type" type="xs:string"/>
  <xs:element name="description" type="xs:string"/>
  <xs:element name="transferID" type="xs:string"/>
  <xs:element name="passageNorth" type="xs:boolean"/>
  <xs:element name="passageEast" type="xs:boolean"/>
  <xs:element name="passageSouth" type="xs:boolean"/>
  <xs:element name="passageWest" type="xs:boolean"/>
  <xs:element name="level" type="xs:int"/>
</xs:schema>

Answer 1

可能是因为你的模式没有验证

模式中的错误出现在xs:all元素中

来自W3Schools：

The all element specifies that the child elements can appear in any order and that each child element can occur zero or one time.

但是在您的模式中，您将xs:all中的一些元素定义为maxoccurs="unbounded"，这是不允许的。例如：

<xs:all>
    <xs:element minOccurs="1" maxOccurs="unbounded" ref="transferRoom"/>
    <xs:element maxOccurs="unbounded" ref="room"/>
</xs:all>

这里的元素“Tranferoom”可以大于1。尝试删除maxoccurs或替换xs:all

编辑：

我做了一些测试，当我从xsd和xml（xmlns、targetnamespace等）中删除所有名称空间声明时，它工作了。所以我猜名称空间有问题