How to catch Spring bean creation error? - spring-mvc

Question

AdminService.java
package service;
import java.awt.Window.Type;
import java.util.HashMap;
import javax.servlet.http.HttpSession;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Repository;
import org.springframework.stereotype.Service;
import dao.IMemberDAO;
import model.Member;
#Service
public class MemberService
{
#Autowired
private IMemberDAO memberDao;
// 로그인
public HashMap<String, Object> login(String id,String pw)
{
HashMap<String, Object> result = memberDao.selectOne(id);
if(result != null) // 존재하는 값이 있으면
{
String opwd = (String) result.get("pw"); // opwd = 존재하는값의 pw값을 가져온 값
if(opwd.equals(pw))
{
return result; // true면 존재하는값을 반환
}
else
{
return null;
//return null; // 아니면 값을 반환하지 않음.
}
}
else // 존재하는 값이 없다면
{
return null;
}
}
// 아이디 체크
public boolean idCheck(String loginPerson)
{
HashMap<String, Object> user = memberDao.selectOne(loginPerson);
if(user != null)
{
return false;
}
else
{
return true;
}
}
// 멤버 추가
public boolean insertMember(Member member)
{
if(idCheck(member.getId()))
{
memberDao.insertMember(member);
return true;
}
else
{
return false;
}
}
public HashMap<String, Object> getMemberInfo(String id)
{
return memberDao.selectOne(id);
}
// 회원 수정
public void memberUpdate(HashMap<String, Object> params)
{
System.out.println("params is : " + params);
memberDao.updateMember(params);
}
// 회원삭제
public boolean memberDelete(String id,String pw)
{
HashMap<String, Object> user = memberDao.selectOne(id);
String pw2 = (String) user.get("pw");
System.out.println("id and pw is : " + id + "/" + pw);
System.out.println("pw2 is : " + pw2);
if(pw2.equals(pw))
{
memberDao.deleteMember(id);
System.out.println("return true");
return true;
}
else
{
System.out.println("return false");
return false;
}
}
}
AdminController.java
package controller;
import java.io.IOException;
import java.util.HashMap;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.servlet.ModelAndView;
import service.AdminService;
import service.MemberService;
#Controller
public class AdminController
{
#Autowired
public AdminService aService;
// 관리자 로그인 폼 페이지
#RequestMapping("admin.do")
public String adminLoginPage()
{
return "adminLoginPage";
}
// 관리자 로그인했을 시 요청
#RequestMapping("adminLoginOK.do")
#ResponseBody
public String adminMainPage(#RequestParam(required=false) String id, #RequestParam(required=false)String pw,HttpSession session,HttpServletRequest req,HttpServletResponse resp)
{
HashMap<String, Object> adminLoginIdentify = aService.adminLogin(id, pw);
//if(session.getAttribute("id") == null){System.out.println("zzz kkk");}
//String admin_id = (String) session.getAttribute("id");
if(adminLoginIdentify != null)
{
return "1";
}
else
{
return "0";
}
}
#RequestMapping("adminPage.do")
public String adminPage(
#RequestParam(required = false) String keyword,
#RequestParam(defaultValue="0") int type,
HttpSession session,HttpServletRequest resquest,HttpServletResponse response) throws IOException
{
ModelAndView mav = new ModelAndView();
HashMap<String, Object> params = new HashMap<String, Object>();
params.put("type", type);
params.put("keyword", keyword);
System.out.println(params);
return "adminMainPage";
}
}
adminDaoMapper.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper
PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="dao.IAdminDAO">
<select id="selectOne" parameterType="Strig" resultType="java.util.HashMap">
select * from member where id = #{id}
</select>
<select id="selectMemberAll" resultType="java.util.HashMap">
select * from member
</select>
</mapper>
AdminDao.java
package dao;
import java.util.HashMap;
public interface IAdminDAO
{
public HashMap<String, Object> selectOne(String id);
}
The code before modifying the applicationContext file is shown below.
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:jdbc="http://www.springframework.org/schema/jdbc"
xmlns:mybatis-spring="http://mybatis.org/schema/mybatis-spring"
xsi:schemaLocation="http://www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc-4.3.xsd
http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.1.xsd">
<context:component-scan base-package="service" />
<bean class="org.springframework.jdbc.datasource.DriverManagerDataSource" id="dataSource">
<property value="com.mysql.jdbc.Driver" name="driverClassName"></property>
<property value="jdbc:mysql://localhost/rachelvf" name="url"></property>
<property value="root" name="username"/>
<property value="mysql" name="password"/>
</bean>
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource"></property>
<property name="mapperLocations" value="classpath*:dao/mapper/*.xml"></property>
</bean>
<bean id="memberDao" class="org.mybatis.spring.mapper.MapperFactoryBean">
<property name="sqlSessionFactory" ref="sqlSessionFactory"></property>
<property name="mapperInterface" value="dao.IMemberDAO"></property>
</bean>
</beans>
This is the appliCation code after the modification.
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:jdbc="http://www.springframework.org/schema/jdbc"
xmlns:mybatis-spring="http://mybatis.org/schema/mybatis-spring"
xsi:schemaLocation="http://www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc-4.3.xsd
http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.1.xsd">
<context:component-scan base-package="service" />
<bean class="org.springframework.jdbc.datasource.DriverManagerDataSource" id="dataSource">
<property value="com.mysql.jdbc.Driver" name="driverClassName"></property>
<property value="jdbc:mysql://localhost/rachelvf" name="url"></property>
<property value="root" name="username"/>
<property value="mysql" name="password"/>
</bean>
<bean class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="mapperLocations" value="classpath:dao/mapper/*.xml"></property>
<property name="typeAliasesPackage" value="model"></property>
<property name="dataSource" ref="dataSource"></property>
</bean>
</beans>
The project worked well before the applicationContext file was modified,
but after the code has been modified, an error occurs.
error code is that.
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'adminService': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private dao.IAdminDAO service.AdminService.adminDao; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [dao.IAdminDAO] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {#org.springframework.beans.factory.annotation.Autowired(required=true)}
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:334)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1210)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:537)
I thought about the cause of the error,
but I think it is because I did not insert the service annotation.
However, there is no typos in any way, and everything is written correctly and errors occur. Is there something I don't know?
Can you tell me what caused this error?
And what about the solution?
Please help me..

Answer 1

Try to change this code of yours:
#Autowired
public AdminService aService;
to this:
#Autowired
public AdminService adminService;
because when you Autowire, he can't see aService on your context that's why he can't create instance of adminService as a default name of your Service bean.
EDIT:
Another thing is you have to implement your interfaces to a concrete class in order to instantiate beans, you can't instantiate interfaces remember, so you need concrete beans to implement what is on your interfaces. Like this:
#Repository
public class IAdminDAOImpl implements IAdminDAO {
//Implementation here
}
#Service
public class AdminServiceImpl implements AdminService {
//Implementation here
}