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我的xml文檔company.xml，我的xsd文件companyxsd.xsd我不知道我在哪兒弄錯了.Exception：cvc-elt：1.a：找不到元素的聲明'公司'。無法找到元素公司的聲明
<?xml version="1.0" encoding="UTF-8"?>
<companies xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:noNamespaceSchemaLocation="companyxsd.xsd">
<company>
<companyname>capgemini</companyname>
<address>chalapathischool</address>
<department>
<dname>cse</dname>
<deptphoneno>995674314</deptphoneno>
<deptfaxno>08776455508</deptfaxno>
<deptemail>[email protected]</deptemail>
<employee>
<empid>1</empid>
<ename>tarun</ename>
<emailid>[email protected]</emailid>
<phoneno>1234567890</phoneno>
</employee>
<contractemployee>
<name>gvn</name>
<phoneno>9989956882</phoneno>
</contractemployee>
</department>
</company>
</companies>
<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
<xs:element name="companies">
<xs:complexType>
<xs:sequence>
<xs:element name="company" maxOccurs="unbounded" minOccurs="1">
<xs:complexType>
<xs:sequence>
<xs:element name="companyname" type="xs:string"/>
<xs:element name="address" type="xs:string"/>
<xs:element name="department" maxOccurs="unbounded" minOccurs="1">
<xs:complexType>
<xs:sequence>
<xs:element name="dname" type="xs:string"/>
<xs:element name="deptphoneno" type="xs:integer"/>
<xs:element name="deptfaxno" type="xs:long"/>
<xs:element name="deptemail" type="xs:string"/>
<xs:element name="employee" maxOccurs="unbounded" minOccurs="1">
<xs:complexType>
<xs:sequence>
<xs:element name="empid" type="xs:integer"/>
<xs:element name="ename" type="xs:string"/>
<xs:element name="emailid" type="xs:string"/>
<xs:element name="phoneno" type="xs:long"/>
</xs:sequence>
</xs:complexType>
</xs:element>
<xs:element name="contractemployee" maxOccurs="unbounded" minOccurs="0">
<xs:complexType>
<xs:sequence>
<xs:element name="name" type="xs:string"/>
<xs:element name="phoneno" type="xs:long"/>
</xs:sequence>
</xs:complexType>
</xs:element>
</xs:sequence>
</xs:complexType>
</xs:element>
</xs:sequence>
</xs:complexType>
</xs:element>
</xs:sequence>
</xs:complexType>
</xs:element>
</xs:schema>
我相信我所有的代碼都沒有錯，但我得到的錯誤。如果誰知道答案請讓我知道。