spring NestedServletException 源码
spring NestedServletException 代码
文件路径：/spring-web/src/main/java/org/springframework/web/util/NestedServletException.java
/*
* Copyright 2002-2022 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.web.util;
import jakarta.servlet.ServletException;
import org.springframework.core.NestedExceptionUtils;
import org.springframework.lang.Nullable;
/**
* Subclass of {@link ServletException} that properly handles a root cause in terms
* of message and stacktrace, just like NestedChecked/RuntimeException does.
*
* <p>Note that the plain ServletException doesn't expose its root cause at all,
* neither in the exception message nor in printed stack traces! While this might
* be fixed in later Servlet API variants (which even differ per vendor for the
* same API version), it is not reliably available on Servlet 2.4 (the minimum
* version required by Spring 3.x), which is why we need to do it ourselves.
*
* <p>The similarity between this class and the NestedChecked/RuntimeException
* class is unavoidable, as this class needs to derive from ServletException.
*
* @author Juergen Hoeller
* @since 1.2.5
* @see #getMessage
* @see org.springframework.core.NestedCheckedException
* @see org.springframework.core.NestedRuntimeException
* @deprecated as of 6.0, in favor of standard {@link ServletException} nesting
*/
@Deprecated
public class NestedServletException extends ServletException {
/** Use serialVersionUID from Spring 1.2 for interoperability. */
private static final long serialVersionUID = -5292377985529381145L;
static {
// Eagerly load the NestedExceptionUtils class to avoid classloader deadlock
// issues on OSGi when calling getMessage(). Reported by Don Brown; SPR-5607.
NestedExceptionUtils.class.getName();
}
/**
* Construct a {@code NestedServletException} with the specified detail message.
* @param msg the detail message
*/
public NestedServletException(String msg) {
super(msg);
}
/**
* Construct a {@code NestedServletException} with the specified detail message
* and nested exception.
* @param msg the detail message
* @param cause the nested exception
*/
public NestedServletException(@Nullable String msg, @Nullable Throwable cause) {
super(NestedExceptionUtils.buildMessage(msg, cause), cause);
}
}
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