有时候当我们注册完的时候系统会提示有一封邮件发送到了你的邮箱，如何做呢？
就要用到spring+velocity+javamail这3个玩意，其实只用了spring，因为其他2个都被spring集成了。
先看代码
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配置中定义
18 private VelocityEngine velocityEngine;//spring配置中定义
19 private SimpleMailMessage simpleMailMessage;//spring配置中定义
20 private String from;
21 private String to;
22 private String subject;
23 private String content;
24 private String templateName;
25 // 是否需要身份验证
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 * 发送模板邮件
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()); //发送人,从配置文件中取得
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 * 发送普通文本邮件
59 *
60 */
61 public void sendText(){
62 mailSender = this.getMailSender();
63 simpleMailMessage.setTo(this.getTo()); //接收人
64 simpleMailMessage.setFrom(simpleMailMessage.getFrom()); //发送人,从配置文件中取得
65 simpleMailMessage.setSubject(this.getSubject());
66 simpleMailMessage.setText(this.getContent());
67 mailSender.send(simpleMailMessage);
68 }
69 /** *//**
70 * 发送普通Html邮件
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 * 发送普通带一张图片的Html邮件
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 //图片必须这样子：<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 * 发送普通带附件的Html邮件
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
} 上面这个类实际上是个发送邮件的工具类，我们只要设置好参数后调用想要的sendXXX()就可以了。如下：
1//注册完马上发送邮件
2MailSenderService mailSender=this.getMailsenderService();
3mailSender.setTo(form.getEmail());
4mailSender.setSubject("来自worthtech的邮件");
5mailSender.setTemplateName("mail.vm");//设置的邮件模板
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("邮件发送成功！"); 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内容如下：
1亲爱的${username}
2
3欢迎加入worthtech!
4
5当您收到这封信的时候，您已经可以正常登录了。
6请点击链接登录首页:${url}
7如果您的email程序不支持链接点击，请将上面的地址拷贝至您的浏览器(如IE)的地址栏进入。
8
9如果您还想申请管理员权限，可以联系管理员${email}
10
11我们对您产生的不便，深表歉意。
12
13希望您在worthtech度过快乐的时光!
14
15-----------------------
16
17(这是一封自动产生的email，请勿回复。) 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