me.alidg.errors.handlers

Class ServletWebErrorHandler

java.lang.Object

me.alidg.errors.handlers.ServletWebErrorHandler

All Implemented Interfaces:

WebErrorHandler

public class ServletWebErrorHandler
extends Object
implements WebErrorHandler

A WebErrorHandler implementation responsible for handling common Spring MVC specific exceptions.

Author:

Ali Dehghani

Field Summary

Fields

Modifier and Type	Field and Description
static String	INVALID_OR_MISSING_BODY When we couldn't process the request body.
static String	METHOD_NOT_ALLOWED The HTTP method not supported on the resource.
static String	MISSING_PARAMETER When a required request parameter is missing.
static String	MISSING_PART When a required request part is missing.
static String	NO_HANDLER When we couldn't find any controller to handle the request.
static String	NOT_ACCEPTABLE When the Accept header is invalid.
static String	NOT_SUPPORTED When the Content-Type header is not supported.

Constructor Summary

Constructors

Constructor and Description
ServletWebErrorHandler()

Method Summary

Modifier and Type	Method and Description
boolean	canHandle(Throwable exception) Only handles ServletExceptions and HttpMessageNotReadableExceptions.
HandledException	handle(Throwable exception) Bunch of if-else-es to return an appropriate HandledException based on the nature of the given exception.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

INVALID_OR_MISSING_BODY

public static final String INVALID_OR_MISSING_BODY

When we couldn't process the request body.

See Also:

Constant Field Values

NOT_ACCEPTABLE

public static final String NOT_ACCEPTABLE

When the Accept header is invalid.

See Also:

Constant Field Values

NOT_SUPPORTED

public static final String NOT_SUPPORTED

When the Content-Type header is not supported.

See Also:

Constant Field Values

METHOD_NOT_ALLOWED

public static final String METHOD_NOT_ALLOWED

The HTTP method not supported on the resource.

See Also:

Constant Field Values

MISSING_PARAMETER

public static final String MISSING_PARAMETER

When a required request parameter is missing.

See Also:

Constant Field Values

MISSING_PART

public static final String MISSING_PART

When a required request part is missing.

See Also:

Constant Field Values

NO_HANDLER

public static final String NO_HANDLER

When we couldn't find any controller to handle the request.

See Also:

Constant Field Values

Constructor Detail

ServletWebErrorHandler

public ServletWebErrorHandler()

Method Detail

canHandle

public boolean canHandle(Throwable exception)

Only handles ServletExceptions and HttpMessageNotReadableExceptions.

Specified by:

canHandle in interface WebErrorHandler

Parameters:

exception - The exception to examine.

Returns:

true when can handle the exception, false otherwise.

handle

@NonNull
public HandledException handle(Throwable exception)

Bunch of if-else-es to return an appropriate HandledException based on the nature of the given exception.

I've never wanted Switch Expressions and Pattern Matching more!

Specified by:

handle in interface WebErrorHandler

Parameters:

exception - The exception to handle.

Returns:

The corresponding HandledException to the given exception.