Spring Error Controller

SimpleErrorController.java

import java.util.Map;

import javax.servlet.http.HttpServletRequest;

import org.springframework.util.Assert;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.context.request.RequestAttributes;
import org.springframework.web.context.request.ServletRequestAttributes;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.autoconfigure.web.ErrorAttributes;
import org.springframework.boot.autoconfigure.web.ErrorController;

/**
 * Error Controller
 */

@RestController
@RequestMapping("/error")
public class SimpleErrorController implements ErrorController{
	
	private final ErrorAttributes errorAttributes;

	  @Autowired
	  public SimpleErrorController(ErrorAttributes errorAttributes) {
	    Assert.notNull(errorAttributes, "ErrorAttributes must not be null");
	    this.errorAttributes = errorAttributes;
	  }

	  @Override
	  public String getErrorPath() {
	    return "/error";
	  }

	  @RequestMapping
	  public Map<String, Object> error(HttpServletRequest aRequest){
	    return getErrorAttributes(aRequest,	getTraceParameter(aRequest));
	  }

	  private boolean getTraceParameter(HttpServletRequest request) {
	    String parameter = request.getParameter("trace");
	    if (parameter == null) {
	        return false;
	    }
	    return !"false".equals(parameter.toLowerCase());
	  }

	  private Map<String, Object> getErrorAttributes(HttpServletRequest aRequest, boolean includeStackTrace) {
	    RequestAttributes requestAttributes = new ServletRequestAttributes(aRequest);
	    return errorAttributes.getErrorAttributes(requestAttributes, includeStackTrace);  
	  }
}