The following classes could be bundled in querydsl or spring:

• SpringConnectionProvider https://github.com/querydsl/querydsl-customer-dao/blob/master/src/main/java/com/querydsl/example/config/SpringConnectionProvider.java
• SpringExceptionTranslator https://github.com/querydsl/querydsl-customer-dao/blob/master/src/main/java/com/querydsl/example/config/SpringExceptionTranslator.java