有時候當我們注冊完的時候系統會提示有一封郵件發送到了你的郵箱，如何做呢？
就要用到spring+velocity+javamail這3個玩意，其實只用了spring，因為其他2個都被spring集成了。
先看代碼
1
package com.worthtech.app.util;
2
3import java.io.File;
4import java.util.Map;
5
6import javax.mail.MessagingException;
7import javax.mail.internet.MimeMessage;
8
9import org.apache.velocity.app.VelocityEngine;
10import org.springframework.core.io.FileSystemResource;
11import org.springframework.mail.SimpleMailMessage;
12import org.springframework.mail.javamail.JavaMailSender;
13import org.springframework.mail.javamail.MimeMessageHelper;
14import org.springframework.ui.velocity.VelocityEngineUtils;
15
16
public class MailSenderService 
{
17
private JavaMailSender mailSender;//spring配置中定義
18 private VelocityEngine velocityEngine;//spring配置中定義
19 private SimpleMailMessage simpleMailMessage;//spring配置中定義
20 private String from;
21 private String to;
22 private String subject;
23 private String content;
24 private String templateName;
25 // 是否需要身份驗證
26 private boolean validate = false;
27
28
29
public JavaMailSender getMailSender() {
30 return mailSender;
31
}
32 public void setMailSender(JavaMailSender mailSender) {
33 this.mailSender = mailSender;
34 }
35 public VelocityEngine getVelocityEngine() {
36 return velocityEngine;
37 }
38 public void setVelocityEngine(VelocityEngine velocityEngine) {
39 this.velocityEngine = velocityEngine;
40 }
41 /** *//**
42 * 發送模板郵件
43 *
44 */
45 public void sendWithTemplate(Map model){
46 mailSender = this.getMailSender();
47 simpleMailMessage.setTo(this.getTo()); //接收人
48 simpleMailMessage.setFrom(simpleMailMessage.getFrom()); //發送人,從配置文件中取得
49 simpleMailMessage.setSubject(this.getSubject());
50 String result = null;
51 try {
52 result = VelocityEngineUtils.mergeTemplateIntoString(this.getVelocityEngine(), this.getTemplateName(), "UTF-8",model);
53 } catch (Exception e) {}
54 simpleMailMessage.setText(result);
55 mailSender.send(simpleMailMessage);
56 }
57 /** *//**
58 * 發送普通文本郵件
59 *
60 */
61 public void sendText(){
62 mailSender = this.getMailSender();
63 simpleMailMessage.setTo(this.getTo()); //接收人
64 simpleMailMessage.setFrom(simpleMailMessage.getFrom()); //發送人,從配置文件中取得
65 simpleMailMessage.setSubject(this.getSubject());
66 simpleMailMessage.setText(this.getContent());
67 mailSender.send(simpleMailMessage);
68 }
69 /** *//**
70 * 發送普通Html郵件
71 *
72 */
73 public void sendHtml(){
74 mailSender = this.getMailSender();
75 MimeMessage mimeMessage = mailSender.createMimeMessage();
76 MimeMessageHelper messageHelper = new MimeMessageHelper(mimeMessage);
77 try {
78 messageHelper.setTo(this.getTo());
79 messageHelper.setFrom(simpleMailMessage.getFrom());
80 messageHelper.setSubject(this.getSubject());
81 messageHelper.setText(this.getContent(),true);
82 } catch (MessagingException e) {
83 // TODO Auto-generated catch block
84 e.printStackTrace();
85 }
86 mailSender.send(mimeMessage);
87 }
88 /** *//**
89 * 發送普通帶一張圖片的Html郵件
90 *
91 */
92 public void sendHtmlWithImage(String imagePath){
93 mailSender = this.getMailSender();
94 MimeMessage mimeMessage = mailSender.createMimeMessage();
95 try {
96 MimeMessageHelper messageHelper = new MimeMessageHelper(mimeMessage,true);
97 messageHelper.setTo(this.getTo());
98 messageHelper.setFrom(simpleMailMessage.getFrom());
99 messageHelper.setSubject(this.getSubject());
100 messageHelper.setText(this.getContent(),true);
101// Content="<html><head></head><body><img src=\"cid:image\"/></body></html>";
102 //圖片必須這樣子：<img src='cid:image'/>
103 FileSystemResource img = new FileSystemResource(new File(imagePath));
104 messageHelper.addInline("image",img);
105 } catch (MessagingException e) {
106 // TODO Auto-generated catch block
107 e.printStackTrace();
108 }
109 mailSender.send(mimeMessage);
110 }
111 /** *//**
112 * 發送普通帶附件的Html郵件
113 *
114 */
115 public void sendHtmlWithAttachment(String filePath){
116 mailSender = this.getMailSender();
117 MimeMessage mimeMessage = mailSender.createMimeMessage();
118 try {
119 MimeMessageHelper messageHelper = new MimeMessageHelper(mimeMessage,true);
120 messageHelper.setTo(this.getTo());
121 messageHelper.setFrom(simpleMailMessage.getFrom());
122 messageHelper.setSubject(this.getSubject());
123 messageHelper.setText(this.getContent(),true);
124 FileSystemResource file = new FileSystemResource(new File(filePath));
125// System.out.println("file.getFilename==="+file.getFilename());
126 messageHelper.addAttachment(file.getFilename(),file);
127 } catch (MessagingException e) {
128 // TODO Auto-generated catch block
129 e.printStackTrace();
130 }
131 mailSender.send(mimeMessage);
132 }
133 public String getFrom() {
134 return from;
135 }
136 public void setFrom(String from) {
137 this.from = from;
138 }
139 public String getSubject() {
140 return subject;
141 }
142 public void setSubject(String subject) {
143 this.subject = subject;
144 }
145 public String getTo() {
146 return to;
147 }
148 public void setTo(String to) {
149 this.to = to;
150 }
151 public String getTemplateName() {
152 return templateName;
153 }
154 public void setTemplateName(String templateName) {
155 this.templateName = templateName;
156 }
157 public String getContent() {
158 return content;
159 }
160 public void setContent(String content) {
161 this.content = content;
162 }
163 public boolean isValidate() {
164 return validate;
165 }
166 public void setValidate(boolean validate) {
167 this.validate = validate;
168 }
169 public SimpleMailMessage getSimpleMailMessage() {
170 return simpleMailMessage;
171 }
172 public void setSimpleMailMessage(SimpleMailMessage simpleMailMessage) {
173 this.simpleMailMessage = simpleMailMessage;
174 }
175
} 上面這個類實際上是個發送郵件的工具類，我們只要設置好參數后調用想要的sendXXX()就可以了。如下：
1//注冊完馬上發送郵件
2MailSenderService mailSender=this.getMailsenderService();
3mailSender.setTo(form.getEmail());
4mailSender.setSubject("來自worthtech的郵件");
5mailSender.setTemplateName("mail.vm");//設置的郵件模板
6Map model=new HashMap();
7model.put("username", form.getUserName());
8String url=request.getRequestURL().toString();
9url=url.substring(0, url.lastIndexOf("/"));
10model.put("url", url);
11model.put("email", "gjni@worthtech.net");
12mailSender.sendWithTemplate(model);
13System.out.println("郵件發送成功！"); 下面的是spring配置
1<bean id="mailSender" class="org.springframework.mail.javamail.JavaMailSenderImpl">
2 <property name="host" value="${mail.host}"/>
3 <property name="username" value="${mail.username}"/>
4 <property name="password" value="${mail.password}"/>
5 <property name="defaultEncoding" value="UTF-8"></property>
6 <property name="javaMailProperties">
7 <props>
8 <prop key="mail.smtp.auth">${mail.smtp.auth}</prop>
9 <prop key="mail.smtp.timeout">${mail.smtp.timeout}</prop>
10 <!--
11 <prop key="mail.smtp.starttls.enable">true</prop>
12 <prop key="mail.smtp.socketFactory.class">javax.net.ssl.SSLSocketFactory</prop>
13 <prop key="mail.smtp.socketFactory.fallback">false</prop>
14 -->
15 </props>
16 </property>
17 </bean>
18 <bean id="simpleMailMessage" class="org.springframework.mail.SimpleMailMessage" singleton="false">
19 <property name="from">
20 <value>${mail.default.from}</value>
21 </property>
22 </bean>
23 <bean id="velocityEngine" class="org.springframework.ui.velocity.VelocityEngineFactoryBean">
24 <property name="velocityProperties">
25 <props>
26 <prop key="resource.loader">class</prop>
27 <prop key="class.resource.loader.class">
28 org.apache.velocity.runtime.resource.loader.ClasspathResourceLoader
29 </prop>
30 <prop key="velocimacro.library"></prop>
31 </props>
32 </property>
33 </bean>
34 <bean id="mailsenderService" class="com.worthtech.app.util.MailSenderService">
35 <property name="mailSender" ref="mailSender" />
36 <property name="simpleMailMessage" ref="simpleMailMessage" />
37 <property name="velocityEngine" ref="velocityEngine" />
38 </bean> mail.vm內容如下：
1親愛的${username}
2
3歡迎加入worthtech!
4
5當您收到這封信的時候，您已經可以正常登錄了。
6請點擊鏈接登錄首頁:${url}
7如果您的email程序不支持鏈接點擊，請將上面的地址拷貝至您的瀏覽器(如IE)的地址欄進入。
8
9如果您還想申請管理員權限，可以聯系管理員${email}
10
11我們對您產生的不便，深表歉意。
12
13希望您在worthtech度過快樂的時光!
14
15-----------------------
16
17(這是一封自動產生的email，請勿回復。) mail.properties如下：
1mail.host=218.000.000.234
2mail.port=25
3mail.username=gjni@worthtech.net
4mail.password=xxxxxxxx
5mail.smtp.auth=true
6mail.smtp.timeout=25000
7mail.default.from=gjni@worthtech.net