Improve URLs in Validation chapter of the reference manual

In order to improve the user experience with URLs for sections of the
Validation chapter, this commit makes the following changes to page
names in the "validation" folder.

- beans-beans.html --> data-binding.html

- conversion.html --> error-code-resolution.html

Some of the section anchors in data-binding.html have also been
renamed. For example, #beans-beans is now #data-binding-property-binding.

Closes gh-35181

framework-docs/modules/ROOT/nav.adoc

@@ -40,8 +40,8 @@
 ** xref:core/resources.adoc[]
 ** xref:core/validation.adoc[]
 *** xref:core/validation/validator.adoc[]
-*** xref:core/validation/beans-beans.adoc[]
-*** xref:core/validation/conversion.adoc[]
+*** xref:core/validation/data-binding.adoc[]
+*** xref:core/validation/error-code-resolution.adoc[]
 *** xref:core/validation/convert.adoc[]
 *** xref:core/validation/format.adoc[]
 *** xref:core/validation/format-configuring-formatting-globaldatetimeformat.adoc[]

framework-docs/modules/ROOT/pages/core/validation/data-binding.adoc

@@ -1,20 +1,20 @@
-[[beans-binding]]
+[[data-binding]]
 = Data Binding
 
 Data binding is useful for binding user input to a target object where user input is a map
-with property paths as keys, following xref:beans-beans-conventions[JavaBeans conventions].
+with property paths as keys, following xref:data-binding-conventions[JavaBeans conventions].
 `DataBinder` is the main class that supports this, and it provides two ways to bind user
 input:
 
-- xref:beans-constructor-binding[Constructor binding] - bind user input to a public data
-constructor, looking up constructor argument values in the user input.
-- xref:beans-beans[Property binding] - bind user input to setters, matching keys from the
-user input to properties of the target object structure.
+- xref:data-binding-constructor-binding[Constructor binding] - bind user input to a
+  public data constructor, looking up constructor argument values in the user input.
+- xref:data-binding-property-binding[Property binding] - bind user input to setters,
+  matching keys from the user input to properties of the target object structure.
 
 You can apply both constructor and property binding or only one.
 
 
-[[beans-constructor-binding]]
+[[data-binding-constructor-binding]]
 == Constructor Binding
 
 To use constructor binding:
@@ -32,7 +32,7 @@ WebFlux support a custom name mapping through the `@BindParam` annotation on con
 parameters or fields if present. If necessary, you can also configure a `NameResolver` on
 `DataBinder` to customize the argument name to use.
 
-xref:beans-beans-conventions[Type conversion] is applied as needed to convert user input.
+xref:data-binding-conventions[Type conversion] is applied as needed to convert user input.
 If the constructor parameter is an object, it is constructed recursively in the same
 manner, but through a nested property path. That means constructor binding creates both
 the target object and any objects it contains.
@@ -46,9 +46,7 @@ If the target is created successfully, then `target` is set to the created insta
 after the call to `construct`.
 
 
-
-
-[[beans-beans]]
+[[data-binding-property-binding]]
 == Property Binding with `BeanWrapper`
 
 The `org.springframework.beans` package adheres to the JavaBeans standard.
@@ -74,15 +72,14 @@ The way the `BeanWrapper` works is partly indicated by its name: it wraps a bean
 perform actions on that bean, such as setting and retrieving properties.
 
 
-
-[[beans-beans-conventions]]
+[[data-binding-conventions]]
 === Setting and Getting Basic and Nested Properties
 
 Setting and getting properties is done through the `setPropertyValue` and
 `getPropertyValue` overloaded method variants of `BeanWrapper`. See their Javadoc for
 details. The below table shows some examples of these conventions:
 
-[[beans-beans-conventions-properties-tbl]]
+[[data-binding-conventions-properties-tbl]]
 .Examples of properties
 |===
 | Expression| Explanation
@@ -106,7 +103,7 @@ details. The below table shows some examples of these conventions:
 (This next section is not vitally important to you if you do not plan to work with
 the `BeanWrapper` directly. If you use only the `DataBinder` and the `BeanFactory`
 and their default implementations, you should skip ahead to the
-xref:core/validation/beans-beans.adoc#beans-beans-conversion[section on `PropertyEditors`].)
+xref:core/validation/data-binding.adoc#data-binding-conversion[section on `PropertyEditors`].)
 
 The following two example classes use the `BeanWrapper` to get and set
 properties:
@@ -239,9 +236,8 @@ Kotlin::
 ======
 
 
-
-[[beans-beans-conversion]]
-== ``PropertyEditor``'s
+[[data-binding-conversion]]
+== ``PropertyEditor``s
 
 Spring uses the concept of a `PropertyEditor` to effect the conversion between an
 `Object` and a `String`. It can be handy
@@ -272,7 +268,7 @@ package. Most, (but not all, as indicated in the following table) are, by defaul
 still register your own variant to override the default one. The following table describes
 the various `PropertyEditor` implementations that Spring provides:
 
-[[beans-beans-property-editors-tbl]]
+[[data-binding-property-editors-tbl]]
 .Built-in `PropertyEditor` Implementations
 [cols="30%,70%"]
 |===
@@ -426,8 +422,8 @@ Kotlin::
 ======
 
 
-[[beans-beans-conversion-customeditor-registration]]
-=== Custom ``PropertyEditor``'s
+[[data-binding-conversion-customeditor-registration]]
+=== Custom ``PropertyEditor``s
 
 When setting bean properties as string values, a Spring IoC container ultimately uses
 standard JavaBeans `PropertyEditor` implementations to convert these strings to the complex type of the
@@ -451,7 +447,7 @@ where it can be automatically detected and applied.
 Note that all bean factories and application contexts automatically use a number of
 built-in property editors, through their use of a `BeanWrapper` to
 handle property conversions. The standard property editors that the `BeanWrapper`
-registers are listed in the xref:core/validation/beans-beans.adoc#beans-beans-conversion[previous section].
+registers are listed in the xref:core/validation/data-binding.adoc#data-binding-conversion[previous section].
 Additionally, ``ApplicationContext``s also override or add additional editors to handle
 resource lookups in a manner appropriate to the specific application context type.
 
@@ -569,7 +565,7 @@ Finally, the following example shows how to use `CustomEditorConfigurer` to regi
 	</bean>
 ----
 
-[[beans-beans-conversion-customeditor-registration-per]]
+[[data-binding-conversion-customeditor-registration-per]]
 === `PropertyEditorRegistrar`
 
 Another mechanism for registering property editors with the Spring container is to
@@ -580,7 +576,7 @@ You can write a corresponding registrar and reuse it in each case.
 `PropertyEditorRegistry`, an interface that is implemented by the Spring `BeanWrapper`
 (and `DataBinder`). `PropertyEditorRegistrar` instances are particularly convenient
 when used in conjunction with `CustomEditorConfigurer` (described
-xref:core/validation/beans-beans.adoc#beans-beans-conversion-customeditor-registration[here]), which exposes a property
+xref:core/validation/data-binding.adoc#data-binding-conversion-customeditor-registration[here]), which exposes a property
 called `setPropertyEditorRegistrars(..)`. `PropertyEditorRegistrar` instances added
 to a `CustomEditorConfigurer` in this fashion can easily be shared with `DataBinder` and
 Spring MVC controllers. Furthermore, it avoids the need for synchronization on custom
@@ -703,7 +699,3 @@ This style of `PropertyEditor` registration can lead to concise code (the implem
 of the `@InitBinder` method is only one line long) and lets common `PropertyEditor`
 registration code be encapsulated in a class and then shared amongst as many controllers
 as needed.
-
-
-
-

framework-docs/modules/ROOT/pages/core/validation/error-code-resolution.adoc

@@ -1,7 +1,7 @@
-[[validation-conversion]]
-= Resolving Codes to Error Messages
+[[validation-error-code-resolution]]
+= Resolving Error Codes to Error Messages
 
-We covered databinding and validation. This section covers outputting messages that correspond
+We covered data binding and validation. This section covers outputting messages that correspond
 to validation errors. In the example shown in the xref:core/validation/validator.adoc[preceding section],
 we rejected the `name` and `age` fields. If we want to output the error messages by using a
 `MessageSource`, we can do so using the error code we provide when rejecting the field
@@ -23,6 +23,3 @@ in the javadoc of
 {spring-framework-api}/validation/DefaultMessageCodesResolver.html[`DefaultMessageCodesResolver`],
 respectively.
 
-
-
-

framework-docs/modules/ROOT/pages/core/validation/validator.adoc

@@ -1,5 +1,5 @@
 [[validator]]
-= Validation by Using Spring's Validator Interface
+= Validation Using Spring's Validator Interface
 
 Spring features a `Validator` interface that you can use to validate objects. The
 `Validator` interface works by using an `Errors` object so that, while validating,

framework-docs/modules/ROOT/pages/web/webflux/controller/ann-methods/modelattrib-method-args.adoc

@@ -43,7 +43,7 @@ request parameters. Argument names are determined through runtime-retained param
 names in the bytecode.
 
 By default, both constructor and property
-xref:core/validation/beans-beans.adoc#beans-binding[data binding] are applied. However,
+xref:core/validation/data-binding.adoc[data binding] are applied. However,
 model object design requires careful consideration, and for security reasons it is
 recommended either to use an object tailored specifically for web binding, or to apply
 constructor binding only. If property binding must still be used, then _allowedFields_

framework-docs/modules/ROOT/pages/web/webmvc/mvc-controller/ann-methods/modelattrib-method-args.adoc

@@ -78,7 +78,7 @@ Kotlin::
 ======
 
 By default, both constructor and property
-xref:core/validation/beans-beans.adoc#beans-binding[data binding] are applied. However,
+xref:core/validation/data-binding.adoc[data binding] are applied. However,
 model object design requires careful consideration, and for security reasons it is
 recommended either to use an object tailored specifically for web binding, or to apply
 constructor binding only. If property binding must still be used, then _allowedFields_

framework-docs/modules/ROOT/partials/web/web-data-binding-model-design.adoc

@@ -1,4 +1,4 @@
-xref:core/validation/beans-beans.adoc#beans-binding[Data binding] for web requests involves
+xref:core/validation/data-binding.adoc[Data binding] for web requests involves
 binding request parameters to a model object. By default, request parameters can be bound
 to any public property of the model object, which means malicious clients can provide
 extra values for properties that exist in the model object graph, but are not expected to
@@ -39,7 +39,7 @@ the properties required for the input:
 ----
 
 Another good practice is to apply
-xref:core/validation/beans-beans.adoc#beans-constructor-binding[constructor binding],
+xref:core/validation/data-binding.adoc#data-binding-constructor-binding[constructor binding],
 which uses only the request parameters it needs for constructor arguments, and any other
 input is ignored. This is in contrast to property binding which by default binds every
 request parameter for which there is a matching property.