codeconsole commented on issue #15147:
URL: https://github.com/apache/grails-core/issues/15147#issuecomment-3423205014
@jdaugherty you should be able to replicate via a simple controller
```groovy
package data.binding.bug
import grails.converters.JSON
class TestController {
def show(String id) { // success
render([success: true] as JSON)
}
def submit(long id, long imageId) { // error: Cannot cast object '###'
with class 'java.lang.String' to class 'long'.
render([success: true] as JSON)
}
def dq(Long id, Long imageId) { // error: Cannot cast object '###' with
class 'java.lang.String' to class 'long'.
render([success: true] as JSON)
}
}
```
```
curl "http://localhost:8080/test/submit/123456789.json?imageId=123456789";
```
```
2025-10-20T11:07:28.035-07:00 ERROR 34235 --- [nio-8080-exec-4]
o.g.web.errors.GrailsExceptionResolver : GroovyCastException occurred when
processing request: [GET] /test/submit/123456789.json - parameters:
imageId: 123456789
Cannot cast object '123456789' with class 'java.lang.String' to class
'long'. Stacktrace follows:
java.lang.reflect.InvocationTargetException: null
at
java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:110)
at
org.grails.core.DefaultGrailsControllerClass$ReflectionInvoker.invoke(DefaultGrailsControllerClass.java:215)
at
org.grails.core.DefaultGrailsControllerClass.invoke(DefaultGrailsControllerClass.java:192)
at
org.grails.web.mapping.mvc.UrlMappingsInfoHandlerAdapter.handle(UrlMappingsInfoHandlerAdapter.groovy:110)
at
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1089)
at
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:979)
at
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1014)
at
org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:903)
at
org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:885)
at
org.grails.web.servlet.mvc.GrailsWebRequestFilter.doFilterInternal(GrailsWebRequestFilter.java:80)
at
org.grails.web.filters.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:70)
at java.base/java.lang.Thread.run(Thread.java:1447)
Caused by: org.codehaus.groovy.runtime.typehandling.GroovyCastException:
Cannot cast object '123456789' with class 'java.lang.String' to class 'long'
at
java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104)
... 11 common frames omitted
```
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