java发送s mime邮件_SpringBoot集成实现各种邮件发送

JavaMail是提供给开发者处理电子邮件相关的编程接口。它是Sun发布的用来处理email的API。正常我们会用JavaMail相关api来写发送邮件的相关代码。

使用过Spring的众多开发者都知道Spring提供了非常好用的 JavaMailSender接口实现邮件发送。在Spring Boot的Starter模块中也为此提供了自动化配置。

SpringBoot集成邮件引入依赖

org.springframework.boot

spring-boot-starter-mail

底层是使用MailMessage接口

public interface MailMessage {

void setFrom(String var1) throws MailParseException;

void setReplyTo(String var1) throws MailParseException;

void setTo(String var1) throws MailParseException;

void setTo(String... var1) throws MailParseException;

void setCc(String var1) throws MailParseException;

void setCc(String... var1) throws MailParseException;

void setBcc(String var1) throws MailParseException;

void setBcc(String... var1) throws MailParseException;

void setSentDate(Date var1) throws MailParseException;

void setSubject(String var1) throws MailParseException;

void setText(String var1) throws MailParseException;

}

MailMessage有两个实现类，分别是SimpleMailMessage和MimeMailMessage

SimpleMailMessage源码

public class SimpleMailMessage implements MailMessage, Serializable {

@Nullable

private String from;

@Nullable

private String replyTo;

@Nullable

private String[] to;

@Nullable

private String[] cc;

@Nullable

private String[] bcc;

@Nullable

private Date sentDate;

@Nullable

private String subject;

@Nullable

private String text;

public SimpleMailMessage() {

}

public SimpleMailMessage(SimpleMailMessage original) {

Assert.notNull(original, "'original' message argument must not be null");

this.from = original.getFrom();

this.replyTo = original.getReplyTo();

this.to = copyOrNull(original.getTo());

this.cc = copyOrNull(original.getCc());

this.bcc = copyOrNull(original.getBcc());

this.sentDate = original.getSentDate();

this.subject = original.getSubject();

this.text = original.getText();

}

public void setFrom(String from) {

this.from = from;

}

@Nullable

public String getFrom() {

return this.from;

}

public void setReplyTo(String replyTo) {

this.replyTo = replyTo;

}

@Nullable

public String getReplyTo() {

return this.replyTo;

}

public void setTo(String to) {

this.to = new String[]{to};

}

public void setTo(String... to) {

this.to = to;

}

@Nullable

public String[] getTo() {

return this.to;

}

public void setCc(String cc) {

this.cc = new String[]{cc};

}

public void setCc(String... cc) {

this.cc = cc;

}

@Nullable

public String[] getCc() {

return this.cc;

}

public void setBcc(String bcc) {

this.bcc = new String[]{bcc};

}

public void setBcc(String... bcc) {

this.bcc = bcc;

}

@Nullable

public String[] getBcc() {

return this.bcc;

}

public void setSentDate(Date sentDate) {

this.sentDate = sentDate;

}

@Nullable

public Date getSentDate() {

return this.sentDate;

}

public void setSubject(String subject) {

this.subject = subject;

}

@Nullable

public String getSubject() {

return this.subject;

}

public void setText(String text) {

this.text = text;

}

@Nullable

public String getText() {

return this.text;

}

public void copyTo(MailMessage target) {

Assert.notNull(target, "'target' MailMessage must not be null");

if (this.getFrom() != null) {

target.setFrom(this.getFrom());

}

if (this.getReplyTo() != null) {

target.setReplyTo(this.getReplyTo());

}

if (this.getTo() != null) {

target.setTo(copy(this.getTo()));

}

if (this.getCc() != null) {

target.setCc(copy(this.getCc()));

}

if (this.getBcc() != null) {

target.setBcc(copy(this.getBcc()));

}

if (this.getSentDate() != null) {

target.setSentDate(this.getSentDate());

}

if (this.getSubject() != null) {

target.setSubject(this.getSubject());

}

if (this.getText() != null) {

target.setText(this.getText());

}

public boolean equals(Object other) {

if (this == other) {

return true;

} else if (!(other instanceof SimpleMailMessage)) {

return false;

} else {

SimpleMailMessage otherMessage = (SimpleMailMessage)other;

return ObjectUtils.nullSafeEquals(this.from, otherMessage.from) && ObjectUtils.nullSafeEquals(this.replyTo, otherMessage.replyTo) && ObjectUtils.nullSafeEquals(this.to, otherMessage.to) && ObjectUtils.nullSafeEquals(this.cc, otherMessage.cc) && ObjectUtils.nullSafeEquals(this.bcc, otherMessage.bcc) && ObjectUtils.nullSafeEquals(this.sentDate, otherMessage.sentDate) && ObjectUtils.nullSafeEquals(this.subject, otherMessage.subject) && ObjectUtils.nullSafeEquals(this.text, otherMessage.text);

}

public int hashCode() {

int hashCode = ObjectUtils.nullSafeHashCode(this.from);

hashCode = 29 * hashCode + ObjectUtils.nullSafeHashCode(this.replyTo);

hashCode = 29 * hashCode + ObjectUtils.nullSafeHashCode(this.to);

hashCode = 29 * hashCode + ObjectUtils.nullSafeHashCode(this.cc);

hashCode = 29 * hashCode + ObjectUtils.nullSafeHashCode(this.bcc);

hashCode = 29 * hashCode + ObjectUtils.nullSafeHashCode(this.sentDate);

hashCode = 29 * hashCode + ObjectUtils.nullSafeHashCode(this.subject);

return hashCode;

}

public String toString() {

StringBuilder sb = new StringBuilder("SimpleMailMessage: ");

sb.append("from=").append(this.from).append("; ");

sb.append("replyTo=").append(this.replyTo).append("; ");

sb.append("to=").append(StringUtils.arrayToCommaDelimitedString(this.to)).append("; ");

sb.append("cc=").append(StringUtils.arrayToCommaDelimitedString(this.cc)).append("; ");

sb.append("bcc=").append(StringUtils.arrayToCommaDelimitedString(this.bcc)).append("; ");

sb.append("sentDate=").append(this.sentDate).append("; ");

sb.append("subject=").append(this.subject).append("; ");

sb.append("text=").append(this.text);

return sb.toString();

}

@Nullable

private static String[] copyOrNull(@Nullable String[] state) {

return state == null ? null : copy(state);

}

private static String[] copy(String[] state) {

String[] copy = new String[state.length];

System.arraycopy(state, 0, copy, 0, state.length);

return copy;

}

MimeMailMessage源码

public class MimeMailMessage implements MailMessage {

private final MimeMessageHelper helper;

public MimeMailMessage(MimeMessageHelper mimeMessageHelper) {

this.helper = mimeMessageHelper;

}

public MimeMailMessage(MimeMessage mimeMessage) {

this.helper = new MimeMessageHelper(mimeMessage);

}

public final MimeMessageHelper getMimeMessageHelper() {

return this.helper;

}

public final MimeMessage getMimeMessage() {

return this.helper.getMimeMessage();

}

public void setFrom(String from) throws MailParseException {

try {

this.helper.setFrom(from);

} catch (MessagingException var3) {