2017-07-11 16:36:13.489 WARN  [http-nio-8032-exec-16]org.springframework.web.servlet.PageNotFound -Request method 'POST' not supported2017-07-11 16:37:30.491 WARN  [http-nio-8032-exec-48]org.springframework.web.servlet.PageNotFound -Request method 'POST' not supported

package org.springframework.web.servlet.mvc.support;import java.io.IOException;import java.util.List;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import org.apache.commons.logging.Log;import org.apache.commons.logging.LogFactory;import org.springframework.beans.ConversionNotSupportedException;import org.springframework.beans.TypeMismatchException;import org.springframework.core.Ordered;import org.springframework.http.MediaType;import org.springframework.http.converter.HttpMessageNotReadableException;import org.springframework.http.converter.HttpMessageNotWritableException;import org.springframework.util.CollectionUtils;import org.springframework.util.StringUtils;import org.springframework.validation.BindException;import org.springframework.validation.BindingResult;import org.springframework.web.HttpMediaTypeNotAcceptableException;import org.springframework.web.HttpMediaTypeNotSupportedException;import org.springframework.web.HttpRequestMethodNotSupportedException;import org.springframework.web.bind.MethodArgumentNotValidException;import org.springframework.web.bind.MissingPathVariableException;import org.springframework.web.bind.MissingServletRequestParameterException;import org.springframework.web.bind.ServletRequestBindingException;import org.springframework.web.bind.annotation.ModelAttribute;import org.springframework.web.bind.annotation.RequestBody;import org.springframework.web.bind.annotation.RequestPart;import org.springframework.web.context.request.async.AsyncRequestTimeoutException;import org.springframework.web.multipart.MultipartFile;import org.springframework.web.multipart.support.MissingServletRequestPartException;import org.springframework.web.servlet.ModelAndView;import org.springframework.web.servlet.NoHandlerFoundException;import org.springframework.web.servlet.handler.AbstractHandlerExceptionResolver;/** * Default implementation of the {
    @link org.springframework.web.servlet.HandlerExceptionResolver * HandlerExceptionResolver} interface that resolves standard Spring exceptions and translates * them to corresponding HTTP status codes. * * 
This exception resolver is enabled by default in the common Spring * {
    @link org.springframework.web.servlet.DispatcherServlet}. * * @author Arjen Poutsma * @author Rossen Stoyanchev * @author Juergen Hoeller * @since 3.0 * @see org.springframework.web.servlet.mvc.method.annotation.ResponseEntityExceptionHandler * @see #handleNoSuchRequestHandlingMethod * @see #handleHttpRequestMethodNotSupported * @see #handleHttpMediaTypeNotSupported * @see #handleMissingServletRequestParameter * @see #handleServletRequestBindingException * @see #handleTypeMismatch * @see #handleHttpMessageNotReadable * @see #handleHttpMessageNotWritable * @see #handleMethodArgumentNotValidException * @see #handleMissingServletRequestParameter * @see #handleMissingServletRequestPartException * @see #handleBindException */public class DefaultHandlerExceptionResolver extends AbstractHandlerExceptionResolver {    /**     * Log category to use when no mapped handler is found for a request.     * @see #pageNotFoundLogger     */    public static final String PAGE_NOT_FOUND_LOG_CATEGORY = "org.springframework.web.servlet.PageNotFound";    /**     * Additional logger to use when no mapped handler is found for a request.     * @see #PAGE_NOT_FOUND_LOG_CATEGORY     */    protected static final Log pageNotFoundLogger = LogFactory.getLog(PAGE_NOT_FOUND_LOG_CATEGORY);    ....            /**     * Handle the case where no request handler method was found.     * 
The default implementation logs a warning, sends an HTTP 404 error, and returns     * an empty {
    @code ModelAndView}. Alternatively, a fallback view could be chosen,     * or the NoSuchRequestHandlingMethodException could be rethrown as-is.     * @param ex the NoSuchRequestHandlingMethodException to be handled     * @param request current HTTP request     * @param response current HTTP response     * @param handler the executed handler, or {
    @code null} if none chosen     * at the time of the exception (for example, if multipart resolution failed)     * @return an empty ModelAndView indicating the exception was handled     * @throws IOException potentially thrown from response.sendError()     * @deprecated as of 4.3, along with {
    @link org.springframework.web.servlet.mvc.multiaction.NoSuchRequestHandlingMethodException}     */    @Deprecated    protected ModelAndView handleNoSuchRequestHandlingMethod(org.springframework.web.servlet.mvc.multiaction.NoSuchRequestHandlingMethodException ex,            HttpServletRequest request, HttpServletResponse response, Object handler) throws IOException {        pageNotFoundLogger.warn(ex.getMessage());        response.sendError(HttpServletResponse.SC_NOT_FOUND);        return new ModelAndView();    }    /**     * Handle the case where no request handler method was found for the particular HTTP request method.     * 
The default implementation logs a warning, sends an HTTP 405 error, sets the "Allow" header,     * and returns an empty {
    @code ModelAndView}. Alternatively, a fallback view could be chosen,     * or the HttpRequestMethodNotSupportedException could be rethrown as-is.     * @param ex the HttpRequestMethodNotSupportedException to be handled     * @param request current HTTP request     * @param response current HTTP response     * @param handler the executed handler, or {
    @code null} if none chosen     * at the time of the exception (for example, if multipart resolution failed)     * @return an empty ModelAndView indicating the exception was handled     * @throws IOException potentially thrown from response.sendError()     */    protected ModelAndView handleHttpRequestMethodNotSupported(HttpRequestMethodNotSupportedException ex,            HttpServletRequest request, HttpServletResponse response, Object handler) throws IOException {        pageNotFoundLogger.warn(ex.getMessage());        String[] supportedMethods = ex.getSupportedMethods();        if (supportedMethods != null) {            response.setHeader("Allow", StringUtils.arrayToDelimitedString(supportedMethods, ", "));        }        response.sendError(HttpServletResponse.SC_METHOD_NOT_ALLOWED, ex.getMessage());        return new ModelAndView();    }    ....}