春季如何创建bean类？
[英]How to create the bean class in spring?
问题描述
I am creating bean class of JavaMailSender and autowired the javamailsender but i getting error 
我正在创建JavaMailSender的bean类并自动连接javamailsender，但出现错误
package com.websystique.springsecurity.service;
import java.util.List;
import javax.mail.MessagingException;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.core.io.FileSystemResource;
import org.springframework.mail.MailParseException;
import org.springframework.mail.SimpleMailMessage;
import org.springframework.mail.javamail.JavaMailSender;
import org.springframework.mail.javamail.MimeMessageHelper;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import com.websystique.springsecurity.dao.EmployeeDao;
import com.websystique.springsecurity.model.Employee;
@Service
@Transactional
public class EmployeeServiceImpl implements EmployeeService {
@Autowired
private EmployeeDao employeeDAOImpl;
Employee Employee;
@Autowired
private JavaMailSender mailSender;
@Autowired
private SimpleMailMessage simpleMailMessage;
public void setMailSender(JavaMailSender mailSender) {
this.mailSender = mailSender;
}
@Transactional
public void addEmployee(Employee employee) {
employeeDAOImpl.addEmployee(employee);
StringBuilder subject = new StringBuilder();
subject.append("User ");
subject.append(employee.getFirstname());
subject.append(" ");
subject.append(employee.getLastname());
subject.append(" has been added");
String content = subject.toString()+" Successfully!";
sendMail("", content,subject.toString(),employee.getEmail(),"D:\\log.pdf");
}
@Transactional
public List<Employee> getAllEmployees() {
return employeeDAOImpl.getAllEmployees();
}
@Transactional
public void deleteEmployee(Integer employeeId) {
employeeDAOImpl.deleteEmployee(employeeId);
}
@Transactional
public Employee getEmployee(int empid) {
return employeeDAOImpl.getEmployee(empid);
}
@Transactional
public Employee updateEmployee(Employee employee) {
Employee emp = employeeDAOImpl.updateEmployee(employee);
StringBuilder subject = new StringBuilder();
subject.append("User ");
subject.append(emp.getFirstname());
subject.append(" ");
subject.append(emp.getLastname());
subject.append(" has been updated");
String content = subject.toString()+" Successfully!";
sendMail("", content,subject.toString(),emp.getEmail(),"D:\\log.pdf");
return emp;
}
@Transactional
public void setEmployeeDAO(EmployeeDao employeeDAO) {
this.employeeDAOImpl = employeeDAO;
}
@Transactional
public void sendMail(String dear, String content,String subject,String
toEmail,String filePath) {
MimeMessage message = mailSender.createMimeMessage();
try{
MimeMessageHelper helper = new MimeMessageHelper(message, true);
helper.setFrom(new InternetAddress("saranpartneritech@gmail.com"));
helper.setTo(new InternetAddress(toEmail));
helper.setSubject(subject);
helper.setText(content);
if(filePath!=null){
FileSystemResource file = new FileSystemResource(filePath);
helper.addAttachment(file.getFilename(), file);
}
}catch (MessagingException e) {
throw new MailParseException(e);
}
mailSender.send(message);
}
}
I couldn't create the bean class for bean id="mailSender". 我无法为bean id =“ mailSender”创建bean类。 i am working on it for past two days please get me out of it. 我过去两天都在工作，请让我离开。
<context:component-scan base-
package="com.websystique.springsecurity.controller" />
<bean
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="viewClass"
value="org.springframework.web.servlet.view.JstlView" />
<property name="prefix" value="/WEB-INF/views/" />
<property name="suffix" value=".jsp" />
</bean>
<mvc:resources mapping="/static/**" location="/static/" />
<mvc:annotation-driven conversion-service="conversionService"/>
<bean id="conversionService"
class="org.springframework.format.support.FormattingConversionService
FactoryBean">
<property name="converters">
<list>
<bean id="roleToUserProfile"
class="com.websystique.springsecurity.util.RoleToUserProfileConverter" />
</list>
</property>
</bean>
<bean id="mailSender"
class="org.springframework.mail.javamail.JavaMailSenderImpl">
<property name="host" value="smtp.gmail.com" />
<property name="port" value="587" />
<property name="username" value="saranpartneritech@gmail.com" />
<property name="password" value="Saran2595" />
<property name="javaMailProperties">
<props>
<prop key="mail.transport.protocol">smtp</prop>
<prop key="mail.smtp.auth">true</prop>
<prop key="mail.smtp.starttls.enable">true</prop>
</props>
</property>
</bean>
<!--
<bean id="mailMail" class="com.mkyong.common.MailMail">
<property name="mailSender" ref="mailSender" />
<property name="simpleMailMessage" ref="customeMailMessage" />
</bean>
<bean id="customeMailMessage"
class="org.springframework.mail.SimpleMailMessage">
<property name="from" value="saranpartneritech@gmail.com" />
<property name="subject" value="Customer Report" />
<property name="text">
<value>
<![CDATA[
Dear %s,
Mail Content : %s
]]>
</value>
</property>
</bean> -->
</beans>
And error page 和错误页面
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'employeeController': Injection of autowired dependencies failed;
2 个解决方案
解决方案1
0 2017-06-21 11:02:47
your component scan includes only com.websystique.springsecurity.controller. 您的组件扫描仅包含com.websystique.springsecurity.controller。 So it will not be able to scan other packages to inject the dependencies. 因此它将无法扫描其他程序包以注入依赖项。 enable the component scan on top package(com.websystique.springsecurity) and override bean definations (if required) in xml file. 启用对顶级程序包（com.websystique.springsecurity）的组件扫描，并覆盖xml文件中的bean定义（如果需要）。
解决方案2
0 2017-06-22 07:29:28
在您的xml中尝试此操作，如果恢复正常
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