Currently the error response from spring boot contains the standard content like below:
{
"timestamp" : 1426615606,
"exception" : "org.springframework.web.bind.MissingServletRequestParameterException",
"status" : 400,
"error" : "Bad Request",
"path" : "/welcome",
"message" : "Required String parameter 'name' is not present"
}
I am looking for a way to get rid of the "exception" property in the response. Is there a way to achieve this?
As described in the documentation on error handling, you can provide your own bean that implements ErrorAttributes to take control of the content.
An easy way to do that is to subclass DefaultErrorAttributes. For example:
@Bean
public ErrorAttributes errorAttributes() {
return new DefaultErrorAttributes() {
@Override
public Map<String, Object> getErrorAttributes(RequestAttributes requestAttributes, boolean includeStackTrace) {
Map<String, Object> errorAttributes = super.getErrorAttributes(requestAttributes, includeStackTrace);
// Customize the default entries in errorAttributes to suit your needs
return errorAttributes;
}
};
}
DefaultErrorAttributes. I am not sure where spring boot calls super.getErrorAttributesIf there is empty message text in json when you encounter exception, you can be hit by changed behavior in spring boot 2.3.0. If this is the case, just change your server.error.include-message property to always.
server.error.include-message and server.error.include-binding-errors can be used to control the inclusion of the message and binding errors respectively. Supported values are always, on-param, and never. Use always will fix the empty message from spring boot 2.3.0 releaseFollowing answer is totally derived from Andy Wilkinson's answer (which uses web.reactive classes)
- It includes web.servlet based classes.
- Spring boot 2.2.4.RELEASE
ExceptionHandlerConfig.java
package com.example.sample.core.exception;
import java.util.LinkedHashMap;
import java.util.Map;
import org.springframework.boot.web.servlet.error.DefaultErrorAttributes;
import org.springframework.boot.web.servlet.error.ErrorAttributes;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.context.request.WebRequest;
@Configuration
public class ExceptionHandlerConfig {
//private static final String DEFAULT_KEY_TIMESTAMP = "timestamp";
private static final String DEFAULT_KEY_STATUS = "status";
private static final String DEFAULT_KEY_ERROR = "error";
private static final String DEFAULT_KEY_ERRORS = "errors";
private static final String DEFAULT_KEY_MESSAGE = "message";
//private static final String DEFAULT_KEY_PATH = "path";
public static final String KEY_STATUS = "status";
public static final String KEY_ERROR = "error";
public static final String KEY_MESSAGE = "message";
public static final String KEY_TIMESTAMP = "timestamp";
public static final String KEY_ERRORS = "errors";
//
@Bean
public ErrorAttributes errorAttributes() {
return new DefaultErrorAttributes() {
@Override
public Map<String ,Object> getErrorAttributes(
WebRequest webRequest
,boolean includeStackTrace
) {
Map<String ,Object> defaultMap
= super.getErrorAttributes( webRequest ,includeStackTrace );
Map<String ,Object> errorAttributes = new LinkedHashMap<>();
// Customize.
// For eg: Only add the keys you want.
errorAttributes.put( KEY_STATUS, defaultMap.get( DEFAULT_KEY_STATUS ) );
errorAttributes.put( KEY_MESSAGE ,defaultMap.get( DEFAULT_KEY_MESSAGE ) );
return errorAttributes;
}
};
}
}
