spring邮件发送需要ssl证书

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我是靠谱客的博主寒冷蛋挞，最近开发中收集的这篇文章主要介绍spring邮件发送需要ssl证书，觉得挺不错的，现在分享给大家，希望可以做个参考。

概述

需要将下列代码编译运行：


1 import java.io.BufferedReader;

2 import java.io.File;

3 import java.io.FileInputStream;

4 import java.io.FileOutputStream;

5 import java.io.InputStream;

6 import java.io.InputStreamReader;

7 import java.io.OutputStream;

8 import java.security.KeyStore;

9 import java.security.MessageDigest;
 10 import java.security.cert.CertificateException;
 11 import java.security.cert.X509Certificate;
 12
 13 import javax.net.ssl.SSLContext;
 14 import javax.net.ssl.SSLException;
 15 import javax.net.ssl.SSLSocket;
 16 import javax.net.ssl.SSLSocketFactory;
 17 import javax.net.ssl.TrustManager;
 18 import javax.net.ssl.TrustManagerFactory;
 19 import javax.net.ssl.X509TrustManager;
 20
 21 public class InstallCert {
 22
 23
public static void main(String[] args) throws Exception {
 24 
String host;
 25
int port;
 26
char[] passphrase;
 27
if ((args.length == 1) || (args.length == 2)) {
 28
String[] c = args[0].split(":");
 29
host = c[0];
 30
port = (c.length == 1) ? 443 : Integer.parseInt(c[1]);
 31
String p = (args.length == 1) ? "changeit" : args[1];
 32
passphrase = p.toCharArray();
 33
} else {
 34 
System.out
 35
.println("Usage: java InstallCert <host>[:port] [passphrase]");
 36
return;
 37 
}
 38
 39
File file = new File("jssecacerts");
 40
if (file.isFile() == false) {
 41
char SEP = File.separatorChar;
 42
File dir = new File(System.getProperty("java.home") + SEP + "lib"
 43
+ SEP + "security");
 44
file = new File(dir, "jssecacerts");
 45
if (file.isFile() == false) {
 46
file = new File(dir, "cacerts");
 47 
}
 48 
}
 49
System.out.println("Loading KeyStore " + file + "...");
 50
InputStream in = new FileInputStream(file);
 51
KeyStore ks = KeyStore.getInstance(KeyStore.getDefaultType());
 52 
ks.load(in, passphrase);
 53 
in.close();
 54
 55
SSLContext context = SSLContext.getInstance("TLS");
 56
TrustManagerFactory tmf = TrustManagerFactory
 57 
.getInstance(TrustManagerFactory.getDefaultAlgorithm());
 58 
tmf.init(ks);
 59
X509TrustManager defaultTrustManager = (X509TrustManager) tmf
 60
.getTrustManagers()[0];
 61
SavingTrustManager tm = new SavingTrustManager(defaultTrustManager);
 62
context.init(null, new TrustManager[] { tm }, null);
 63
SSLSocketFactory factory = context.getSocketFactory();
 64
 65 
System.out
 66
.println("Opening connection to " + host + ":" + port + "...");
 67
SSLSocket socket = (SSLSocket) factory.createSocket(host, port);
 68
socket.setSoTimeout(10000);
 69
try {
 70
System.out.println("Starting SSL handshake...");
 71 
socket.startHandshake();
 72 
socket.close();
 73 
System.out.println();
 74
System.out.println("No errors, certificate is already trusted");
 75
} catch (SSLException e) {
 76 
System.out.println();
 77 
e.printStackTrace(System.out);
 78 
}
 79
 80
X509Certificate[] chain = tm.chain;
 81
if (chain == null) {
 82
System.out.println("Could not obtain server certificate chain");
 83
return;
 84 
}
 85
 86
BufferedReader reader = new BufferedReader(new InputStreamReader(
 87 
System.in));
 88
 89 
System.out.println();
 90
System.out.println("Server sent " + chain.length + " certificate(s):");
 91 
System.out.println();
 92
MessageDigest sha1 = MessageDigest.getInstance("SHA1");
 93
MessageDigest md5 = MessageDigest.getInstance("MD5");
 94
for (int i = 0; i < chain.length; i++) {
 95
X509Certificate cert = chain[i];
 96
System.out.println(" " + (i + 1) + " Subject "
 97
+ cert.getSubjectDN());
 98
System.out.println("
Issuer
" + cert.getIssuerDN());
 99 
sha1.update(cert.getEncoded());
100
System.out.println("
sha1
" + toHexString(sha1.digest()));
101 
md5.update(cert.getEncoded());
102
System.out.println("
md5
" + toHexString(md5.digest()));
103 
System.out.println();
104 
}
105
106 
System.out
107
.println("Enter certificate to add to trusted keystore or 'q' to quit: [1]");
108
String line = reader.readLine().trim();
109
int k;
110
try {
111
k = (line.length() == 0) ? 0 : Integer.parseInt(line) - 1;
112
} catch (NumberFormatException e) {
113
System.out.println("KeyStore not changed");
114
return;
115 
}
116
117
X509Certificate cert = chain[k];
118
String alias = host + "-" + (k + 1);
119 
ks.setCertificateEntry(alias, cert);
120
121
OutputStream out = new FileOutputStream("jssecacerts");
122 
ks.store(out, passphrase);
123 
out.close();
124
125 
System.out.println();
126 
System.out.println(cert);
127 
System.out.println();
128 
System.out
129
.println("Added certificate to keystore 'jssecacerts' using alias '"
130
+ alias + "'");
131 
}
132
133
private static final char[] HEXDIGITS = "0123456789abcdef".toCharArray();
134
135
private static String toHexString(byte[] bytes) {
136
StringBuilder sb = new StringBuilder(bytes.length * 3);
137
for (int b : bytes) {
138
b &= 0xff;
139
sb.append(HEXDIGITS[b >> 4]);
140
sb.append(HEXDIGITS[b & 15]);
141
sb.append(' ');
142 
}
143
return sb.toString();
144 
}
145
146
private static class SavingTrustManager implements X509TrustManager {
147
148
private final X509TrustManager tm;
149
private X509Certificate[] chain;
150
151 
SavingTrustManager(X509TrustManager tm) {
152
this.tm = tm;
153 
}
154
155 
@Override
156
public X509Certificate[] getAcceptedIssuers() {
157
return new X509Certificate[0];
158
//throw new UnsupportedOperationException();

159 
}
160
161
public void checkClientTrusted(X509Certificate[] chain, String authType)
162
throws CertificateException {
163
throw new UnsupportedOperationException();
164 
}
165
166
public void checkServerTrusted(X509Certificate[] chain, String authType)
167
throws CertificateException {
168
this.chain = chain;
169 
tm.checkServerTrusted(chain, authType);
170 
}
171 
}
172
173 }

javac InstallCert.java

java InstallCert www.***.com:xx

网址端口

xml配置：

<!-- 发送邮件 -->
<bean id="javaMailSender" class="org.springframework.mail.javamail.JavaMailSenderImpl">
<property name="host" value="${mail.host}"/>
<property name="javaMailProperties">
<props>
<prop key="mail.smtp.auth">${mail.smtp.auth}</prop>
<prop key="mail.smtp.timeout">${mail.smtp.timeout}</prop>
<prop key="mail.smtp.starttls.enable">${mail.smtp.starttls.enable}</prop>
<prop key="mail.smtp.socketFactory.port">${mail.smtp.socketFactory.port}</prop>
<prop key="mail.smtp.socketFactory.class">${mail.smtp.socketFactory.class}</prop>
<prop key="mail.smtp.socketFactory.fallback">${mail.smtp.socketFactory.fallback}</prop>
<!--<prop key="javax.net.ssl.trustStore">${javax.net.ssl.trustStore}</prop>-->
</props>
</property>
<property name="username" value="${mail.username}"/>
<property name="password" value="${mail.password}"/>
<property name="port" value="${mail.port}"/>
<property name="protocol" value="${mail.protocol}"/>
<property name="defaultEncoding" value="UTF-8"/>
</bean>