doc UTI：com.microsoft.word.doc

doc UTI:com.microsoft.word.doc

docx UTI：org.openxmlformats.wordprocessingml.document

docx UTI:org.openxmlformats.wordprocessingml.document

ppt UTI：com.microsoft.powerpoint.ppt

ppt UTI:com.microsoft.powerpoint.ppt

pptx UTI：org.openxmlformats.presentationml.presentation

pptx UTI:org.openxmlformats.presentationml.presentation

xls UTI：com.microsoft.excel.xls

xls UTI:com.microsoft.excel.xls

xlsx UTI：org.openxmlformats.spreadsheetml.sheet

xlsx UTI:org.openxmlformats.spreadsheetml.sheet

示例：

    <dict>
        <key>CFBundleTypeName</key>
        <string>Microsoft Word 2003 XML document</string>
        <key>CFBundleTypeRole</key>
        <string>Viewer</string>
        <key>LSHandlerRank</key>
        <string>Alternate</string>
        <key>LSItemContentTypes</key>
        <array>
            <string>org.openxmlformats.wordprocessingml.document</string>
        </array>
    </dict>