Assert.isTrue() has thrown an IllegalArgumentException

java.lang.IllegalArgumentException
Javadoc
Thrown to indicate that a method has been passed an illegal or inappropriate argument. @author unascribed @since JDK1.0
at org.springframework.util.Assert.isTrue
(source)

Typical Exception Messages

  1. @ConditionalOnMissingBean annotations must specify at least one bean (type, name or annotation)
  2. [Assertion failed] - this expression must be true
  3. Folder must not be a file
  4. Async support must be enabled on a servlet and for all filters involved in async request processing. This is done in Java code using the Servlet API or by adding "<async-supported>true</async-supported>" to servlet and filter declarations in web.xml. Also you must use a Servlet 3.0+ container
  5. Target bean is not of type of the persistent entity!
  6. Space key is required
  7. No handlers
  8. URL must start with 'jdbc'
  9. Either use @Param on all parameters except Pageable and Sort typed once, or none at all!
  10. Cannot send message after connection closed.

Specific cases

Solution

krasniqi.vesa, 10 months ago

If you are trying to get a specific page of results, try first defining that page.

Check the source of this solution for more info

External results for this pattern (159)

  1. kumarqb8via GitHub12 hours ago
    A list of partitions must be provided
    Show stack trace
  2. arturboschvia GitHub6 days ago
    Anonymous option has already been set
    Show stack trace
  3. olha-bastieievavia GitHub1 week ago
    Values not equal for entry: 'site_admin', expected 'true' but was 'true'
    Show stack trace
  4. Unknown authorvia blogspot.it2 weeks ago
    [Assertion failed] - this expression must be true
    Show stack trace
  5. Unknown authorvia blogspot.com2 weeks ago
    [Assertion failed] - this expression must be true
    Show stack trace
  6. Async support must be enabled on a servlet and for all filters involved in async request processing. This is done in Java code using the Servlet API or by adding "<async-supported>true</async-supported>" to servlet and filter declarations in web.xml. Also you must use a Servlet 3.0+ container
    Show stack trace
  7. No converter found for return value of type: class java.util.ArrayList
    Show stack trace
  8. A org.springframework.kafka.listener.KafkaDataListener implementation must be provided
    Show stack trace
  9. Holincvia Stack Overflow2 weeks ago
    Folder '/home/hand/IdeaProjects/spring-boot/src/main/java' must exist and must be a directory
    Show stack trace
  10. valikvia Stack Overflow2 weeks ago
    Either targetObject or targetClass for the field must be specified
    Show stack trace