최고다최코딩

@Controller

public class LocalExceptionController {

@GetMapping("/business1")

public String business_method() throws BusinessException1 {

boolean b = true;

if(b) {

throw new BusinessException("업무예외1");//예외발생시 BusinessException1으로 던짐 @ExceptionHandler(BusinessException.class)

}

return "forward:/WEB-INF/views/business_result.jsp";//정상실행의 경우

}

/*****************예외처리******************/

@ExceptionHandler(BusinessException.class)

public String handle_business_exception(BusinessException e,Model model) {

model.addAttribute("error_msg", e.getMessage());

return "forward:/WEB-INF/views/business_error_result.jsp";

}

}

/*

* 모든콘트롤러의 공통예외를 처리하기위한 ControllerAdvice

*/

@ControllerAdvice

public class GlobalCommonExceptionControllerAdvice {

@ExceptionHandler(Exception.class)

public String handle_exception(Exception e) {

return "foward:/WEB-INF/views/global_error_result.jsp";

}

@ExceptionHandler(RuntimeException.class)

public String handle_runtime_exception(RuntimeException e) {

return "foward:/WEB-INF/views/global_error_result.jsp";

}

}

@PostMapping("/user_login_action")

public String user_login_action(@ModelAttribute(name="fuser") User user, Model model, HttpSession session) throws Exception {

try {

userService.login(user.getUserId(), user.getPassword());

session.setAttribute("sUserId", user.getUserId());

return "user_main";

} catch (PasswordMismatchException e) {

model.addAttribute("msg2",e.getMessage());

return "user_login_form";

} catch (UserNotFoundException e) {

model.addAttribute("msg1",e.getMessage());

return "user_login_form";

}

}

@Configuration

public class DataSourceConfig {

@Bean

@ConfigurationProperties(prefix="spring.datasource")

public DataSource dataSource() {

return DataSourceBuilder.create().type(DriverManagerDataSource.class).build();

}

}

@Configuration

public class SimpleUrlHandlerMappingConfig {

@Bean

public SimpleUrlHandlerMapping simpleUrlHandlerMapping() {

SimpleUrlHandlerMapping simpleUrlHandlerMapping

= new SimpleUrlHandlerMapping();

Map<String, Object> urlMap = new HashMap<>();

urlMap.put("/hello", helloController());

simpleUrlHandlerMapping.setUrlMap(urlMap);

simpleUrlHandlerMapping.setOrder(0);

return simpleUrlHandlerMapping;

}

@Bean

public HelloController helloController() {

return new HelloController();

}

}

implementation 'org.apache.tomcat.embed:tomcat-embed-jasper'

implementation 'org.glassfish.web:jakarta.servlet.jsp.jstl:2.0.0'

//Spring Container 초기화 시작 [ApplicationContext객체생성 시작]

ApplicationContext applicationContext = SpringApplication.run(SpringBootBeanCreateApplicationMain.class, args);

//스프링 컨테이너(application context)에 등록된 빈의 아이디로 스프링 빈 객체의 참조 얻기

ProductDao productDao =(ProductDao) applicationContext.getBean("productDao");//설정한 이름

UserService userService =(UserService) applicationContext.getBean("userServiceImpl");//설정하지 않은 경우 클래스이름 첫글자 소문자

//스프링 컨테이너(application context)에 등록된 빈의 클래스로 스프링 빈 객체의 참조 얻기 

ProductDao productDao2 =(ProductDao) applicationContext.getBean(ProductDao.class);//인터페이스를 구현한 모든 클래스

ProductService productService2 =(ProductService) applicationContext.getBean(ProductService.class);//인터페이스를 구현한 모든 클래스

System.out.println("-----빈의 scope[singleton]------");

System.out.println(applicationContext.getBean(ProductDao.class));//모두 동일 객체

System.out.println(applicationContext.getBean(ProductDao.class));//모두 동일 객체

System.out.println(applicationContext.getBean("productService"));//모두 동일 객체

System.out.println("-----빈의 scope[singleton]------");

@Repository

public class GuestDaoImplMyBatis implements GuestDao{

@Autowired(required=true)

private GuestMapper guestMapper;

@Configuration

public class DataSourceConfig {

@Bean

@ConfigurationProperties(prefix="spring.datasource")

public DataSource dataSource() {

return DataSourceBuilder.create().type(DriverManagerDataSource.class).build();

}

}