问正在验证1字节UTF-8序列的架构无效字节1

EN

<?xml version="1.0" encoding="UTF-8"?>
<forum>
  <post>
      <description>The Day is coming    </description>
      <date> Thu, 16 Apr 2009 </date>
      <title> cats  </title>
  </post>

  <post>
      <description> its raining </description>
      <date> Tues, 12 Apr 2010 </date>
      <title> dog </title>
  </post>

  <post>
      <description>Game over    </description>
      <date> Tues, 16 Apr 2009 </date>
      <title> frog  </title>
  </post>

  <post>
      <description> Watch </description>
      <date> wednesday, 12 Apr 2010 </date>
      <title> hats </title>
  </post>
</forum>

<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:xs=”http://www.w3.org/2001/XMLSchema”>
<xs:element name="forum" type="xs:forumtype">
  <xs:complexType name = "forumtype">
    <xs:sequence>
      <xs:element name="post" type ="posttype"/>
    </xs:sequence>
   </xs:complexType> 
   <xs:complexType name="posttype">
       <xs:sequence>
            <xs:element name="description" type="xs:string"/>
            <xs:element name="date" type="xs:string"/>
            <xs:element name="title" type="xs:string"/>
          </xs:sequence>
        </xs:complexType>
       </xs:element>
    </xs:schema>