spring JettyEmbeddedErrorHandler 源码

2022-08-12
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springboot JettyEmbeddedErrorHandler 代码

文件路径：/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/web/embedded/jetty/JettyEmbeddedErrorHandler.java

/*
 * Copyright 2012-2022 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.springframework.boot.web.embedded.jetty;

import java.io.IOException;
import java.util.Arrays;
import java.util.HashSet;
import java.util.Set;

import jakarta.servlet.ServletException;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import org.eclipse.jetty.http.HttpMethod;
import org.eclipse.jetty.server.Request;
import org.eclipse.jetty.servlet.ErrorPageErrorHandler;

/**
 * Variation of Jetty's {@link ErrorPageErrorHandler} that supports all {@link HttpMethod
 * HttpMethods} rather than just {@code GET}, {@code POST} and {@code HEAD}. By default
 * Jetty <a href="https://bugs.eclipse.org/bugs/show_bug.cgi?id=446039">intentionally only
 * supports a limited set of HTTP methods</a> for error pages, however, Spring Boot
 * prefers Tomcat, Jetty and Undertow to all behave in the same way.
 *
 * @author Phillip Webb
 * @author Christoph Dreis
 */
class JettyEmbeddedErrorHandler extends ErrorPageErrorHandler {

	private static final Set<String> HANDLED_HTTP_METHODS = new HashSet<>(Arrays.asList("GET", "POST", "HEAD"));

	@Override
	public boolean errorPageForMethod(String method) {
		return true;
	}

	@Override
	public void handle(String target, Request baseRequest, HttpServletRequest request, HttpServletResponse response)
			throws IOException, ServletException {
		if (!HANDLED_HTTP_METHODS.contains(baseRequest.getMethod())) {
			baseRequest.setMethod("GET");
		}
		super.handle(target, baseRequest, request, response);
	}

}

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所属分类： 后端技术
本文标签： Spring Boot Java Spring
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