java

位置:IT落伍者 >> java >> 浏览文章

spring用annotation-autowire配置


发布日期:2021年04月23日
 
spring用annotation-autowire配置

<?xml version= encoding=UTF?>

<beans xmlns=

xmlns:xsi=instance

xmlns:p=

xsi:schemaLocation=

beansxsd

contextxsd

xmlns:context= ><! 使用annotation需加上面三行的该内容和下面的一行 >

<context:annotationconfig/>

<bean id=u class=annotationautoWireUserDAOImpl>

</bean>

<bean id=u class=annotationautoWireUserDAOImpl>

</bean>

<bean id=userService class=annotationautoWireUserService>

</bean>

</beans>

Userjava

package annotationautoWire;

public class User {

private String username;

private String password;

public String getUsername() {

return username;

}

public void setUsername(String username) {

thisusername = username;

}

public String getPassword() {

return password;

}

public void setPassword(String password) {

thispassword = password;

}

}

UserDAOjava

package annotationautoWire;

public interface UserDAO {

public void save(User user)

}

UserDAOImpljava

package annotationautoWire;

public class UserDAOImpl implements UserDAO {

public void save(User user) {

Systemoutprintln(user saved!

}

}

UserServicejava

package annotationautoWire;

import orgspringframeworkbeansfactoryannotationAutowired;

import orgspringframeworkbeansfactoryannotationQualifier;

public class UserService {

private UserDAO userDAO;

public void init() {

Systemoutprintln(init

}

public void add(User user) {

userDAOsave(user)

}

public UserDAO getUserDAO() {

return userDAO;

}

@Autowired//需配置在setter方法上

public void setUserDAO(@Qualifier(u) UserDAO userDAO) {

thisuserDAO = userDAO;

}

public void destroy() {

Systemoutprintln(destroy

}

}

UserServiceTestjava

package annotationautoWire;

import orgjunitTest;

import orgntextApplicationContext;

import orgntextsupportClassPathXmlApplicationContext;

public class UserServiceTest {

@Test

public void testAnnotationAutoWire() throws Exception {

ApplicationContext ctx = new ClassPathXmlApplicationContext(annotation/autoWire/annotationAutoWirexml

UserService service = (UserService)ctxgetBean(userService

serviceadd(new User())

Systemoutprintln(servicegetUserDAO())

}

}

上一篇:在Eclipse中使用Ant来自动编译J2me程序

下一篇:分享:用Struts上传多个文件的方法