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Support java.util.Optional for @MVC named value args

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After this change, java.util.Optional is supported with @RequestParam,
@RequestHeader, and @MatrixVariable arguments in Java 8. When Optional
is used the required flag is effectively ignored.

Issue: SPR-11829
This commit is contained in:
Rossen Stoyanchev
2014-06-12 23:50:26 -04:00
parent c2356e57c8
commit 0dc6082b01
9 changed files with 185 additions and 10 deletions
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8
spring-webmvc/src/main/java/org/springframework/web/servlet/mvc/method/annotation/MatrixVariableMethodArgumentResolver.java
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@@ -115,9 +115,11 @@ public class MatrixVariableMethodArgumentResolver extends AbstractNamedValueMeth
@Override
protected void handleMissingValue(String name, MethodParameter param) throws ServletRequestBindingException {
String paramType = param.getParameterType().getName();
throw new ServletRequestBindingException(
"Missing matrix variable '" + name + "' for method parameter type [" + paramType + "]");
Class<?> paramType = param.getParameterType();
if (!paramType.getName().equals("java.util.Optional")) {
throw new ServletRequestBindingException(
"Missing matrix variable '" + name + "' for method parameter type [" + paramType.getName() + "]");
}
}