I had a similar issue with Spring 4.x using @RestController. Two different packages had a class with the same name…
package com.x.catalog
@RestController
public class TextureController {
...
package com.x.cms
@RestController
public class TextureController {
...
The fix was easy…
package com.x.catalog
@RestController("CatalogTextureController")
public class TextureController {
...
package com.x.cms
@RestController("CMSTextureController")
public class TextureController {
...
The problem seems to be that the annotation gets autowired and takes the class name by default. Giving it an explicit name in the @RestController annotation allows you to keep the class names.