質問編集履歴
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自己解決
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###servletからjavax.mailを使ってgmailにメールを送りたい
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###【自己解決しました】servletからjavax.mailを使ってgmailにメールを送りたい
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現在、javax.mailの仕組みを利用してgmailに対してメールを送信する仕組みを構築しています。
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```Java
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package com.xxxxx.module.mail;
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import java.io.IOException;
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import java.net.InetAddress;
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import java.net.Socket;
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import java.security.cert.X509Certificate;
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import javax.net.SocketFactory;
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import javax.net.ssl.SSLContext;
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import javax.net.ssl.SSLSocketFactory;
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import javax.net.ssl.TrustManager;
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import javax.net.ssl.X509TrustManager;
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/**
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* DummySSLSocketFactory
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*/
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public class DummySSLSocketFactory extends SSLSocketFactory {
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private SSLSocketFactory factory;
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public DummySSLSocketFactory() {
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try {
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SSLContext sslcontext = SSLContext.getInstance("TLS");
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sslcontext.init(null, new TrustManager[] { new X509TrustManager() {
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public void checkClientTrusted(X509Certificate[] cert, String authType) {
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// everything is trusted
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}
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public void checkServerTrusted(X509Certificate[] cert, String authType) {
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// everything is trusted
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}
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public X509Certificate[] getAcceptedIssuers() {
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return new X509Certificate[0];
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}
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} }, null);
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factory = (SSLSocketFactory) sslcontext.getSocketFactory();
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} catch (Exception ex) {
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// ignore
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}
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}
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public static SocketFactory getDefault() {
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return new DummySSLSocketFactory();
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}
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public Socket createSocket() throws IOException {
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return factory.createSocket();
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}
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public Socket createSocket(Socket socket, String s, int i, boolean flag) throws IOException {
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return factory.createSocket(socket, s, i, flag);
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}
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public Socket createSocket(InetAddress inaddr, int i, InetAddress inaddr1, int j) throws IOException {
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return factory.createSocket(inaddr, i, inaddr1, j);
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}
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public Socket createSocket(InetAddress inaddr, int i) throws IOException {
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return factory.createSocket(inaddr, i);
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}
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public Socket createSocket(String s, int i, InetAddress inaddr, int j) throws IOException {
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return factory.createSocket(s, i, inaddr, j);
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}
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public Socket createSocket(String s, int i) throws IOException {
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return factory.createSocket(s, i);
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}
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public String[] getDefaultCipherSuites() {
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return factory.getDefaultCipherSuites();
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}
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public String[] getSupportedCipherSuites() {
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return factory.getSupportedCipherSuites();
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}
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}
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```
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@@ -58,13 +194,59 @@
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###試したこと
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問題点は、SSLが秘密鍵を求めていることでした。
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SSLはTrustManagerというクラスの中で秘密鍵を求めています。
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そこで上記のダミーのSSLSocketFactoryを用意し、TrustManagerを求められる場所でX509TrustManagerインターフェイスをimplementした匿名クラスを作成し、そこで各メソッドをoverrideして秘密鍵を求めないように変更しました。
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``` java
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Properties props = new Properties();
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props.put("mail.smtp.host", "smtp.gmail.com");
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props.put("mail.smtp.socketFactory.port", "587");
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// props.put("mail.smtp.socketFactory.class", "javax.net.SocketFactory");
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props.put("mail.smtp.ssl.socketFactory.class","com.xxxxx.module.mail.DummySSLSocketFactory");
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props.put("mail.smtp.auth", "true");
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props.put("mail.smtp.port", "587");
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props.put("mail.smtp.ssl.enable", "false");
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props.put("mail.smtp.starttls.enable", "true");
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props.put("mail.smtp.ssl.trust", "smtp.gmail.com");
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```
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結果、秘密鍵を求められることなくgmailでの送信が可能になりました。
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ご協力ありがとうございました。
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