If you are working in an environment without internet access, your IDE might highlight the URL in red. You can fix this by mapping the URL to a local copy of the file: the DTD file from the link above. In IntelliJ IDEA :
: Without the DTD, tools like IntelliJ IDEA cannot provide intelligent code completion for your SQL maps. mybatis-3-mapper.dtd download
: Note that MyBatis includes these DTDs inside its core JAR file. It uses a custom EntityResolver to load them locally during application startup, so your app usually won't crash if the mybatis.org website is down, provided the internal resolution works correctly. If you are working in an environment without
To use the DTD, you must include a DOCTYPE declaration at the top of every MyBatis mapper XML file. This tells the XML parser where to find the rules for validation. : Note that MyBatis includes these DTDs inside
: It prevents runtime errors by catching invalid XML tags or attributes during development.
Go to . In the External Schemas and DTDs section, click the + icon. URI : http://mybatis.org/dtd/mybatis-3-mapper.dtd File : Select your downloaded mybatis-3-mapper.dtd file. In Eclipse : Go to Window > Preferences > XML > XML Catalog .