初始化前端目录

src/main/java/com/mini/capi/config/JavaMailConfig.java

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+package com.mini.capi.config;
+
+import com.mini.capi.biz.domain.MailAccount;
+import javax.mail.Session;
+import java.util.Properties;
+
+public class JavaMailConfig {
+
+    /**
+     * 构建IMAP Session（用于接收邮件）
+     */
+    public static Session createImapSession(MailAccount account) {
+        Properties props = new Properties();
+        // IMAP基础配置
+        props.setProperty("mail.store.protocol", "imap");
+        props.setProperty("mail.imap.host", account.getHost());
+        props.setProperty("mail.imap.port", account.getImapPort().toString());
+        // SSL配置
+        if (Boolean.TRUE.equals(account.getSslEnable())) {
+            props.setProperty("mail.imap.ssl.enable", "true");
+            props.setProperty("mail.imap.ssl.socketFactory.class", "javax.net.ssl.SSLSocketFactory");
+        }
+        // 超时配置
+        props.setProperty("mail.imap.connectiontimeout", "5000");
+        props.setProperty("mail.imap.timeout", "5000");
+
+        // 创建Session（带认证）
+        return Session.getInstance(props, new javax.mail.Authenticator() {
+            @Override
+            protected javax.mail.PasswordAuthentication getPasswordAuthentication() {
+                return new javax.mail.PasswordAuthentication(
+                        account.getUsername(),
+                        account.getPassword()
+                );
+            }
+        });
+    }
+
+    /**
+     * 构建SMTP Session（用于发送邮件）
+     */
+    public static Session createSmtpSession(MailAccount account) {
+        Properties props = new Properties();
+        // SMTP基础配置
+        props.setProperty("mail.transport.protocol", "smtp");
+        props.setProperty("mail.smtp.host", account.getHost());
+        props.setProperty("mail.smtp.port", account.getSmtpPort().toString());
+        // 认证和SSL配置
+        props.setProperty("mail.smtp.auth", "true"); // 必须开启认证
+        if (Boolean.TRUE.equals(account.getSslEnable())) {
+            props.setProperty("mail.smtp.ssl.enable", "true");
+            props.setProperty("mail.smtp.ssl.socketFactory.class", "javax.net.ssl.SSLSocketFactory");
+        }
+        // 超时配置
+        props.setProperty("mail.smtp.connectiontimeout", "5000");
+        props.setProperty("mail.smtp.timeout", "5000");
+
+        // 创建Session（带认证）
+        return Session.getInstance(props, new javax.mail.Authenticator() {
+            @Override
+            protected javax.mail.PasswordAuthentication getPasswordAuthentication() {
+                return new javax.mail.PasswordAuthentication(
+                        account.getUsername(),
+                        account.getPassword()
+                );
+            }
+        });
+    }
+}

src/main/java/com/mini/capi/config/ThreadPoolConfig.java

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+package com.mini.capi.config;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import java.util.concurrent.*;
+
+@Configuration
+public class ThreadPoolConfig {
+
+    /**
+     * 附件处理线程池：核心线程2，最大线程5，队列100，空闲60s回收
+     */
+    @Bean("attachmentThreadPool")
+    public ExecutorService attachmentThreadPool() {
+        return new ThreadPoolExecutor(
+                2,
+                5,
+                60L,
+                TimeUnit.SECONDS,
+                new LinkedBlockingQueue<>(100),
+                Executors.defaultThreadFactory(),
+                new ThreadPoolExecutor.AbortPolicy() // 队列满时拒绝策略（可根据需求调整）
+        );
+    }
+}