spring SmartMimeMessage 源码
spring SmartMimeMessage 代码
文件路径：/spring-context-support/src/main/java/org/springframework/mail/javamail/SmartMimeMessage.java
/*
* Copyright 2002-2017 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.mail.javamail;
import jakarta.activation.FileTypeMap;
import jakarta.mail.Session;
import jakarta.mail.internet.MimeMessage;
import org.springframework.lang.Nullable;
/**
* Special subclass of the standard JavaMail {@link MimeMessage}, carrying a
* default encoding to be used when populating the message and a default Java
* Activation {@link FileTypeMap} to be used for resolving attachment types.
*
* <p>Created by {@link JavaMailSenderImpl} in case of a specified default encoding
* and/or default FileTypeMap. Autodetected by {@link MimeMessageHelper}, which
* will use the carried encoding and FileTypeMap unless explicitly overridden.
*
* @author Juergen Hoeller
* @since 1.2
* @see JavaMailSenderImpl#createMimeMessage()
* @see MimeMessageHelper#getDefaultEncoding(jakarta.mail.internet.MimeMessage)
* @see MimeMessageHelper#getDefaultFileTypeMap(jakarta.mail.internet.MimeMessage)
*/
class SmartMimeMessage extends MimeMessage {
@Nullable
private final String defaultEncoding;
@Nullable
private final FileTypeMap defaultFileTypeMap;
/**
* Create a new SmartMimeMessage.
* @param session the JavaMail Session to create the message for
* @param defaultEncoding the default encoding, or {@code null} if none
* @param defaultFileTypeMap the default FileTypeMap, or {@code null} if none
*/
public SmartMimeMessage(
Session session, @Nullable String defaultEncoding, @Nullable FileTypeMap defaultFileTypeMap) {
super(session);
this.defaultEncoding = defaultEncoding;
this.defaultFileTypeMap = defaultFileTypeMap;
}
/**
* Return the default encoding of this message, or {@code null} if none.
*/
@Nullable
public final String getDefaultEncoding() {
return this.defaultEncoding;
}
/**
* Return the default FileTypeMap of this message, or {@code null} if none.
*/
@Nullable
public final FileTypeMap getDefaultFileTypeMap() {
return this.defaultFileTypeMap;
}
}
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