Java error: The reference to entity "characterencoding" must end with the '; ' Delimite

Workaround:

Add the following configuration to Web. xml:
<filter>
<filter-name>encodingFilter</filter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>UTF8</param-value>
</init-param>
<init-param>
<param-name>forceEncoding</param-name>
<param-value>true</param-value>
</init-param>
</filter>

And then change the database connection.
Jdbc:mysql://localhost/mydb?useunicode=true&characterencoding=utf-8

Then change the corresponding field in the MySQL software UTF-8 encoding;

Error correction results:

When configuring a URL to access the database, the first settings are as follows:

Jdbc:mysql://localhost:3306/photo?useunicode=true&characterencoding=utf-8, note that in the middle of the "&", in the XML this is not readable, the correct wording will "&" Escape "&amp;" ：

Jdbc:mysql://localhost:3306/photo?useunicode=true&amp;characterencoding=utf-8

Analysis:

Sometimes when using XML as a configuration file, you should use the encoding rules of XML to make the appropriate settings.

The following is an encoding transformation for some of the special symbols in XML :

&lt;	<	Less than sign
&gt;	>	Greater than sign
&amp;	&	and character
&apos;	‘	Single quotation marks
&quot;	"	Double quotes

Java error: The reference to entity "characterencoding" must end with the '; ' Delimite