增加邮件发送功能

src/gaea.app/build.gradle

@@ -1,6 +1,7 @@
 dependencies {
     compile project(":src:gaea")
     compile("org.springframework.boot:spring-boot-starter-web:$spring_version")
+    compile("org.springframework.boot:spring-boot-starter-mail:$spring_version")
     compile group: 'net.sf.dozer', name: 'dozer', version: '5.5.1'
 }
 

src/gaea.app/src/main/kotlin/com/synebula/gaea/app/component/EmailMessenger.kt

@@ -0,0 +1,78 @@
+package com.synebula.gaea.app.component
+
+import com.synebula.gaea.io.messager.IEmailMessenger
+import com.synebula.gaea.log.ILogger
+import org.springframework.beans.factory.annotation.Autowired
+import org.springframework.beans.factory.annotation.Value
+import org.springframework.core.io.FileSystemResource
+import org.springframework.mail.javamail.JavaMailSenderImpl
+import org.springframework.mail.javamail.MimeMessageHelper
+import org.springframework.stereotype.Component
+import java.io.File
+
+@Component
+class EmailMessenger : IEmailMessenger {
+    private var mailSender = JavaMailSenderImpl()
+
+    @Value("\${mail.host}")
+    var host = ""
+
+    @Value("\${mail.port}")
+    var port = ""
+
+    @Value("\${mail.sender}")
+    var sender = ""
+
+    @Value("\${mail.username}")
+    var username = ""
+
+    @Value("\${mail.password}")
+    var password = ""
+
+    @Autowired
+    lateinit var logger: ILogger
+
+    /**
+     * 发送消息
+     *
+     * @param subject 邮件标题
+     * @param content 邮件内容,支持html
+     * @param receivers 邮件接受者
+     * @param files 附件
+     */
+    override fun sendMessage(subject: String, content: String, receivers: List<String>, files: Map<String, String>) {
+        this.check()
+        mailSender.host = host
+        mailSender.username = username
+        mailSender.password = password
+        mailSender.port = if (port.isEmpty()) port.toInt() else 25
+        receivers.forEach {
+            try {
+                val mail = mailSender.createMimeMessage()
+                val mimeMessageHelper = MimeMessageHelper(mail)
+                mimeMessageHelper.setFrom(sender)
+                mimeMessageHelper.setTo(it)
+                mimeMessageHelper.setSubject(subject)
+                mimeMessageHelper.setText(content)
+                files.forEach { (name, path) ->
+                    val file = FileSystemResource(File(path))
+                    mimeMessageHelper.addAttachment(name, file)
+                }
+                mailSender.send(mail) //发送
+            } catch (e: Exception) {
+                logger.error(e, "发送邮件[$subject]至地址[$it]失败")
+            }
+        }
+    }
+
+    private fun check() {
+        if (this.host.isEmpty())
+            throw RuntimeException("邮件Host信息没有配置, 请配置项: mail.host")
+        if (this.username.isEmpty())
+            throw RuntimeException("邮件用户名信息没有配置, 请配置项: mail.username")
+        if (this.password.isEmpty())
+            throw RuntimeException("邮件密码信息没有配置, 请配置项: mail.password")
+        if (this.sender.isEmpty())
+            throw RuntimeException("邮件发送人信息没有配置, 请配置项: mail.sender")
+    }
+}