2022.10.07 Spring

sofia·2022년 11월 16일
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Spring

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Char 9. AOP(Aspect Oriented Programming)-I

AOP란

관점 지향 프로그래밍
(관점지향 : 어떤 로직을 기준으로, 핵심적인 관점/부가적인 관점으로 나눠보고, 그 관점을 기준으로 각각 모듈화(어떤 공통된 로직이나 기능을 하나단위로 묶는것)하겠다는 것

AOP 의존 설정
(오류발생시 pom.xml작성)

<!-- cglib -->
<dependency>
	<groupId>com.kenai.nbpwr</groupId>
	<artifactId>net-sf-cglib</artifactId>
	<version>2.1.3-201003011305</version>
</dependency>
<!-- AOP -->
<dependency>
			<groupId>org.aspectj</groupId>
			<artifactId>aspectjweaver</artifactId>
			<version>1.7.4</version>
		</dependency>

주요 개념
1. Aspect
: 여러객체에 공통으로 적용되는 기능

2.Advice
: 언제 공통 관심 기능을 핵심로직에 적용할 지 정의.

3.Jointpoint
: Adivce를 적용 가능한 지점(메소드 호출, 필드값 변경 등이 해당)
스프링은 프록시를 이용하여 AOP를 구현하기 때문에 메소드 호출에 대한 JoinPoint만 지원됨.

4.Pointcut
:Join Point의 상세한 스펙을 정의한 것.

5.Weaving (핵심기능을 적용시키는 행위 자체)
:Advice를 핵심 로직 코드에 적용하는 것

xml 기반의 AOP 구현

공통 기능을 쓰기 위해 Bean 생성

Expression -> com.javalec.ex… -> 패키지안의 적용 범위

Adivce 종류

<aop:before> : 메소드 실행 전에 advice실행
<aop:after-returning> : 정상적으로 메소드 실행 후에 advice실행
<aop:after-throwing> : 메소드 실행중 exception 발생시 advice실행
<aop:after> : 메소드 실행중 exception 이 발생하여도 advice실행
<aop:around> : 메서드 실행 전/후 및 exception 발생시 advice실행

예제 1

Student

package com.javalec.spring_9_1;

public class Student {
	private String name;
	private int age;
	private int gradeNum;
	private int classNumS;
	
	
	public void getStudentInfo() {
		System.out.println("이름 : "+getName());
		System.out.println("나이 : "+getAge());
		System.out.println("학년 : "+getGradeNum());
		System.out.println("반 : "+getClassNumS());
	}
	
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public int getAge() {
		return age;
	}
	public void setAge(int age) {
		this.age = age;
	}
	public int getGradeNum() {
		return gradeNum;
	}
	public void setGradeNum(int gradeNum) {
		this.gradeNum = gradeNum;
	}
	public int getClassNumS() {
		return classNumS;
	}
	public void setClassNumS(int classNumS) {
		this.classNumS = classNumS;
	}
}

Worker

package com.javalec.spring_9_1;

public class Worker {
	private String name;
	private int age;
	private String job;
	
	public void getWorkerInfo() {
		System.out.println("이름 : "+getName());
		System.out.println("나이  : "+getAge());
		System.out.println("직업 : "+getJob());
	}
	
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public int getAge() {
		return age;
	}
	public void setAge(int age) {
		this.age = age;
	}
	public String getJob() {
		return job;
	}
	public void setJob(String job) {
		this.job = job;
	}
}

LogAop

package com.javalec.spring_9_1;

import org.aspectj.lang.ProceedingJoinPoint;

public class LogAop {
	public Object loggerAop(ProceedingJoinPoint jointPoint) {
		String signatureStr = jointPoint.getSignature().toShortString();
		System.out.println(signatureStr+"is start");
		long st = System.currentTimeMillis();
		Object obj = null;
		
		//핵심기능..적용된 기능
		try {
			obj =jointPoint.proceed();
		} catch (Throwable e) {
			e.printStackTrace();
		}finally {
			long et = System.currentTimeMillis();
			System.out.println(signatureStr+"is end");
			System.out.println(signatureStr+"경과시간 : "+(et-st));
		}
		return obj;
	}
}

또는

package com.javalec.spring_9_1;

import org.aspectj.lang.ProceedingJoinPoint;

public class LogAop {
	public Object loggerAop(ProceedingJoinPoint jointPoint) throws Throwable {
		String signatureStr = jointPoint.getSignature().toShortString();
		System.out.println(signatureStr+"is start");
		long st = System.currentTimeMillis();
		Object obj = null;
		
//		//핵심기능..적용된 기능
		try {
			obj =jointPoint.proceed();
			return obj;
		}finally {
			long et = System.currentTimeMillis();
			System.out.println(signatureStr+"is end");
			System.out.println(signatureStr+"경과시간 : "+(et-st));
		}
		
	}
}

applicationCTX.xml

<?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:aop="http://www.springframework.org/schema/aop"
	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
		http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.1.xsd">

	<bean id="logAop" class="com.javalec.spring_9_1.LogAop"></bean>
	
	<aop:config>
		<aop:aspect id="logger" ref="logAop">
			<aop:pointcut id="publicM" expression="within(com.javalec.spring_9_1.*)"/>
			<aop:around method="loggerAop" pointcut-ref="publicM"/>
		</aop:aspect>
	</aop:config>
	
	
	<!--bean 객체 생성  -->
	<bean id="student" class="com.javalec.spring_9_1.Student">
		<property name="name" value="홍길동"></property>
		<property name="age" value="10"></property>
		<property name="gradeNum" value="3"></property>
		<property name="classNumS" value="5"></property>
	</bean>
	
	<bean id="worker" class="com.javalec.spring_9_1.Worker">
		<property name="name" value="홍길순"></property>
		<property name="age" value="35"></property>
		<property name="job" value="개발자"></property>
	</bean>
	
</beans>

MainClass

package com.javalec.spring_9_1;

import org.springframework.context.support.AbstractApplicationContext;
import org.springframework.context.support.GenericXmlApplicationContext;

public class MainClass {
	public static void main(String[] args) {
		AbstractApplicationContext ctx = new GenericXmlApplicationContext("classpath:applicationCTX.xml");
	
		Student student = ctx.getBean("student",Student.class);
		student.getStudentInfo();
	
		
		Worker worker = ctx.getBean("worker",Worker.class);
		worker.getWorkerInfo();
	}
}

pom.xml

<!-- AOP -->
		<dependency>
			<groupId>org.aspectj</groupId>
			<artifactId>aspectjweaver</artifactId>
			<version>1.7.4</version>
		</dependency>
		
		<!-- cglib -->
		<dependency>
		    <groupId>com.kenai.nbpwr</groupId>
		    <artifactId>net-sf-cglib</artifactId>
		    <version>2.1.3-201003011305</version>
		</dependency>

연습문제 1


Professor.java

package com.javalec.spring_ex_9_1;

public class Professor {
	private String name;
	private String subject;
	private int age;
	
	public void getProfessorInfo() {
		System.out.println("이름 : "+getName());
		System.out.println("과목 : "+getSubject());
		System.out.println("나이 : "+getAge());
	}
	
	public int getAge() {
		return age;
	}
	public void setAge(int age) {
		this.age = age;
	}
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public String getSubject() {
		return subject;
	}
	public void setSubject(String subject) {
		this.subject = subject;
	}
}

Singer.java

package com.javalec.spring_ex_9_1;

public class Singer {
	private String name;
	private String song;
	private int member;
	
	public void getSingerInfo() {
		System.out.println("이름 : "+getName());
		System.out.println("노래 : "+getSong());
		System.out.println("멤버 : "+getMember());
	}
	
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public String getSong() {
		return song;
	}
	public void setSong(String song) {
		this.song = song;
	}
	public int getMember() {
		return member;
	}
	public void setMember(int member) {
		this.member = member;
	}
}

LogAop.java

package com.javalec.spring_ex_9_1;

import org.aspectj.lang.ProceedingJoinPoint;

public class LogAop {
	public Object loggerAop(ProceedingJoinPoint jointPoint) {
		String signatureStr = jointPoint.getSignature().toShortString();
		System.out.println("@@@### start ====>"+signatureStr);
		Object obj = null;
		
		
		try {
			obj =jointPoint.proceed();
		} catch (Throwable e) {
			e.printStackTrace();
		}finally {
			System.out.println("@@@### end ====>"+signatureStr);
		}
		
		
		
		return signatureStr;
	}
}

applicationCTX.xml

<?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:aop="http://www.springframework.org/schema/aop"
	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
		http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.1.xsd">

	<bean id="logAop" class="com.javalec.spring_ex_9_1.LogAop"> </bean>
	
	<aop:config>
		<aop:aspect id="logger" ref="logAop">
			<aop:pointcut id="publicM" expression="within(com.javalec.spring_ex_9_1.*)"/>
			<aop:around method="loggerAop" pointcut-ref="publicM"/>
		</aop:aspect>
	</aop:config>
	
	
	<!--bean 객체 생성  -->
	<bean id="professor" class="com.javalec.spring_ex_9_1.Professor">
		<property name="name" value="김교수"></property>
		<property name="age" value="33"></property>
		<property name="subject" value="스프링"></property>
	</bean>
	
	<bean id="singer" class="com.javalec.spring_ex_9_1.Singer">
		<property name="name" value="방탄소년단"></property>
		<property name="song" value="다이너마이트"></property>
		<property name="member" value="7"></property>
	</bean>
</beans>

MainClass.java

package com.javalec.spring_ex_9_1;

import org.springframework.context.support.AbstractApplicationContext;
import org.springframework.context.support.GenericXmlApplicationContext;

public class MainClass {
	public static void main(String[] args) {
		AbstractApplicationContext ctx = new GenericXmlApplicationContext("classpath:applicationCTX.xml");
	
		Professor professor = ctx.getBean("professor",Professor.class);
		professor.getProfessorInfo();
	
		
		Singer singer = ctx.getBean("singer",Singer.class);
		singer.getSingerInfo();
	}
}

Char 10. AOP(Aspect Oriented Programming)-II

@Aspect를 이용한 AOP구현

*.xml
	<aop:config>
		<aop:aspect>
			<aop:pointcut/>
			<aop:around/>
		</aop:aspect>
	</aop:config>
@Aspect 						(=<aop:config>)
@Pointcut("within(com.javalec.spring_10_1.*)") 		(=<aop:pointcut/>)
@Around("pointcutMethod()")				(=<aop:around/>)
*.xml
<aop:aspectj-autoproxy></aop:aspectj-autoproxy>

예제 2

Student.java

package com.javalec.spring_10_1;

public class Student {
	private String name;
	private int age;
	private int gradeNum;
	private int classNum;
	
	
	public void getStudentInfo() {
		System.out.println("이름 : "+getName());
		System.out.println("나이 : "+getAge());
		System.out.println("학년 : "+getGradeNum());
		System.out.println("반 : "+getClassNum());
	}
	
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public int getAge() {
		return age;
	}
	public void setAge(int age) {
		this.age = age;
	}
	public int getGradeNum() {
		return gradeNum;
	}
	public void setGradeNum(int gradeNum) {
		this.gradeNum = gradeNum;
	}
	public int getClassNum() {
		return classNum;
	}
	public void setClassNum(int classNum) {
		this.classNum = classNum;
	}
}

Worker.java

package com.javalec.spring_10_1;

public class Worker {
	private String name;
	private int age;
	private String job;
	
	public void getWorkerInfo() {
		System.out.println("이름 : "+getName());
		System.out.println("나이  : "+getAge());
		System.out.println("직업 : "+getJob());
	}
	
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public int getAge() {
		return age;
	}
	public void setAge(int age) {
		this.age = age;
	}
	public String getJob() {
		return job;
	}
	public void setJob(String job) {
		this.job = job;
	}
}

applicationCTX.xml

<?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:aop="http://www.springframework.org/schema/aop"
   xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
      http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.1.xsd">
   
   <aop:aspectj-autoproxy></aop:aspectj-autoproxy>
   <bean id="logAop" class="com.javalec.spring_10_1.LogAop"></bean>
   
   <!-- <aop:config>
      <aop:aspect id="logger" ref="logAop">
         <aop:pointcut expression="within(com.javalec.spring_10_1.*)" id="publicM"/>
         <aop:around method="loggerAop" pointcut-ref="publicM"/>
      </aop:aspect>
   </aop:config> -->
   
   <bean id="student" class="com.javalec.spring_10_1.Student">
      <property name="name" value="홍길동"></property>
      <property name="age" value="10"></property>
      <property name="gradeNum" value="3"></property>
      <property name="classNum" value="5"></property>
   </bean>
   
   <bean id="worker" class="com.javalec.spring_10_1.Worker">
      <property name="name" value="홍길순"></property>
      <property name="age" value="35"></property>
      <property name="job" value="개발자"></property>
   </bean>
</beans>

LogAop.java

package com.javalec.spring_10_1;

import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Pointcut;

@Aspect
public class LogAop {
	@Pointcut("within(com.javalec.spring_10_1.*)")//범위 설정
	private void pointCutMethod() {}
	
	@Around("pointCutMethod()")
	public Object loggerAop(ProceedingJoinPoint jointPoint) throws Throwable {
		String signatureStr = jointPoint.getSignature().toShortString();
		System.out.println(signatureStr+"is start");
		long st = System.currentTimeMillis();
		Object obj = null;
		
//		//핵심기능 적용된 기능
//		try {
//			obj =jointPoint.proceed();
//		} catch (Throwable e) {
//			e.printStackTrace();
//		}finally {
//			long et = System.currentTimeMillis();
//			System.out.println(signatureStr+"is end");
//			System.out.println(signatureStr+"경과시간 : "+(et-st));
//		}
		
		try {
			obj =jointPoint.proceed();
			return obj;
		}finally {
			long et = System.currentTimeMillis();
			System.out.println(signatureStr+"is end");
			System.out.println(signatureStr+"경과시간 : "+(et-st));
		}
		
	}
}

MainClass.java

package com.javalec.spring_10_1;

import org.springframework.context.support.AbstractApplicationContext;
import org.springframework.context.support.GenericXmlApplicationContext;

public class MainClass {
	public static void main(String[] args) {
		AbstractApplicationContext ctx = new GenericXmlApplicationContext("classpath:applicationCTX.xml");
	
		Student student = ctx.getBean("student",Student.class);
		student.getStudentInfo();
		
		Worker worker = ctx.getBean("worker",Worker.class);
		worker.getWorkerInfo();
	}
}

연습문제 2


Car.java

package com.javalec.spring_ex_10_1;

public class Car {
	private String company;
	private String product;
	private int capRank;
	
	public void getCarInfo() {
		System.out.println("회사 : "+getCompany());
		System.out.println("시총 : "+getCapRank());
		System.out.println("제품 : "+getProduct());
	}
	
	public String getCompany() {
		return company;
	}
	public void setCompany(String company) {
		this.company = company;
	}
	public String getProduct() {
		return product;
	}
	public void setProduct(String product) {
		this.product = product;
	}
	public int getCapRank() {
		return capRank;
	}
	public void setCapRank(int capRank) {
		this.capRank = capRank;
	}
	
	
	
}

Graphic.java

package com.javalec.spring_ex_10_1;

public class Graphic {
	private String company;
	private int capRank;
	
	public void getGraphicInfo() {
		System.out.println("회사 : "+getCompany());
		System.out.println("시총 : "+getCapRank());
	}
	
	public String getCompany() {
		return company;
	}
	public void setCompany(String company) {
		this.company = company;
	}
	public int getCapRank() {
		return capRank;
	}
	public void setCapRank(int capRank) {
		this.capRank = capRank;
	}
	
	
}

LogAop.java

package com.javalec.spring_ex_10_1;

import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Pointcut;

@Aspect
public class LogAop {
	@Pointcut("within(com.javalec.spring_ex_10_1.*)")//범위 설정
	private void pointCutMethod() {}
	
	@Around("pointCutMethod()")
	public Object loggerAop(ProceedingJoinPoint jointPoint) throws Throwable {
		String signatureStr = jointPoint.getSignature().toShortString();
		System.out.println("@@@$$$ start ===>"+signatureStr);
		Object obj = null;
		
		try {
			obj =jointPoint.proceed();
			return obj;
		}finally {
			System.out.println("@@@$$$ end ===>"+signatureStr);
		}
	}
}

applicationCTX.xml

<?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:aop="http://www.springframework.org/schema/aop"
	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
		http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.1.xsd">

	<aop:aspectj-autoproxy></aop:aspectj-autoproxy>
	<bean id="logAop" class="com.javalec.spring_ex_10_1.LogAop"></bean>
	
	
	<bean id="car" class="com.javalec.spring_ex_10_1.Car">
		<property name="company" value="테슬라"></property>
	    <property name="capRank" value="6"></property>
	    <property name="product" value="모델S"></property>
	</bean>
	
	<bean id="graphic" class="com.javalec.spring_ex_10_1.Graphic">
		<property name="company" value="엔비디아"></property>
	    <property name="capRank" value="7"></property>
	</bean>
</beans>

MainClass.java

package com.javalec.spring_ex_10_1;

import org.springframework.context.support.AbstractApplicationContext;
import org.springframework.context.support.GenericXmlApplicationContext;

public class MainClass {
	public static void main(String[] args) {
		AbstractApplicationContext ctx = new GenericXmlApplicationContext("classpath:applicationCTX.xml");
		
		Car car = ctx.getBean("car",Car.class);
		car.getCarInfo();
		
		Graphic graphic = ctx.getBean("graphic",Graphic.class);
		graphic.getGraphicInfo();
	}
}

Char 11.MVC

MVC기초

MVC(MODEL-VIEW-CONTROLLER)
: 사용자 인터페이스, 데이터 논리 제어를 구현하는데 사용되는 소프트웨어 디자인 패턴
소프트 웨어의 비즈니스 로직과 화면을 구분

Char 12.Controller

  • 먼저 하기 전에 web.xml=>filter 추가!(한글깨짐 처리)
<filter>
		<filter-name>encodingFilter</filter-name>
		<filter-class>
			org.springframework.web.filter.CharacterEncodingFilter     
		</filter-class>
		<init-param>
			<param-name>encoding</param-name>   
			<param-value>UTF-8</param-value>
		</init-param>
		<init-param>
			<param-name>forceEncoding</param-name>  
			<param-value>true</param-value>
		</init-param>
	</filter>    

	<filter-mapping>
		<filter-name>encodingFilter</filter-name>
		<url-pattern>/*</url-pattern>                 
	</filter-mapping>

Controller.class 제작

Controller로 클래스 제작 순서

  1. @Controller를 이용한 클래스 생성
  2. @RequestMapping을 이용한 요청 경로 지정
  3. 요청 처리 메소드 구현
  4. view 이름 return

요청처리 메소드 제작

View에 데이터 전달

  • Model 클래스를 이용하여 데이터 전달

클래스에 @RequestMapping 적용

  1. 클래스에 @RequestMapping 적용

  2. 메소드에 @RequestMapping 적용

  1. 조합된 요청 경로 : /board/write

예제 1

view.jsp

<%@ page language="java" contentType="text/html; charset=EUC-KR"
    pageEncoding="EUC-KR"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="EUC-KR">
<title>Insert title here</title>
</head>
<body>
	view.jsp입니다.---
</body>
</html>

HomeController

package com.javalec.spring_12_2;

import java.text.DateFormat;
import java.util.Date;
import java.util.Locale;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;

/**
 * Handles requests for the application home page.
 */
@Controller
public class HomeController {
	
	private static final Logger logger = LoggerFactory.getLogger(HomeController.class);
	
	/**
	 * Simply selects the home view to render by returning its name.
	 */
	@RequestMapping(value = "/", method = RequestMethod.GET)
	public String home(Locale locale, Model model) {
		logger.info("Welcome home! The client locale is {}.", locale);
		
		Date date = new Date();
		DateFormat dateFormat = DateFormat.getDateTimeInstance(DateFormat.LONG, DateFormat.LONG, locale);
		
		String formattedDate = dateFormat.format(date);
		
		model.addAttribute("serverTime", formattedDate );
		
		return "home";
	}
	
	@RequestMapping("board/view")
	public String view() {
		return "board/view";
	}
	
}

예제 2

HomeController .java

package com.javalec.spring_12_3;

import java.text.DateFormat;
import java.util.Date;
import java.util.Locale;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;

/**
 * Handles requests for the application home page.
 */
@Controller
public class HomeController {
	
	private static final Logger logger = LoggerFactory.getLogger(HomeController.class);
	
	/**
	 * Simply selects the home view to render by returning its name.
	 */
	@RequestMapping(value = "/", method = RequestMethod.GET)
	public String home(Locale locale, Model model) {
		logger.info("Welcome home! The client locale is {}.", locale);
		
		Date date = new Date();
		DateFormat dateFormat = DateFormat.getDateTimeInstance(DateFormat.LONG, DateFormat.LONG, locale);
		
		String formattedDate = dateFormat.format(date);
		
		model.addAttribute("serverTime", formattedDate );
		
		return "home";
	}
	
	@RequestMapping("board/title")
	public String title(Model model) {
		model.addAttribute("id",30);
		
		return "board/title";
	}
}

title.jsp

<%@ page language="java" contentType="text/html; charset=EUC-KR"
    pageEncoding="EUC-KR"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="EUC-KR">
<title>Insert title here</title>
</head>
<body>
	title.jsp입니다.
	id : ${id}
</body>
</html>

예제 3

shopping.jsp

<%@ page language="java" contentType="text/html; charset=EUC-KR"
    pageEncoding="EUC-KR"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="EUC-KR">
<title>Insert title here</title>
</head>
<body>
	shopping.jsp입니다.
</body>
</html>

shopping2.jsp

<%@ page language="java" contentType="text/html; charset=EUC-KR"
    pageEncoding="EUC-KR"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="EUC-KR">
<title>Insert title here</title>
</head>
<body>
	shopping2.jsp입니다.
</body>
</html>

HomeController

package com.javalec.spring_12_5;

import java.text.DateFormat;
import java.util.Date;
import java.util.Locale;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;

/**
 * Handles requests for the application home page.
 */
@Controller
public class HomeController {
	
	private static final Logger logger = LoggerFactory.getLogger(HomeController.class);
	
	/**
	 * Simply selects the home view to render by returning its name.
	 */
	@RequestMapping(value = "/", method = RequestMethod.GET)
	public String home(Locale locale, Model model) {
		logger.info("Welcome home! The client locale is {}.", locale);
		
		Date date = new Date();
		DateFormat dateFormat = DateFormat.getDateTimeInstance(DateFormat.LONG, DateFormat.LONG, locale);
		
		String formattedDate = dateFormat.format(date);
		
		model.addAttribute("serverTime", formattedDate );
		
		return "home";
	}
	
	
	@RequestMapping("shopping")
	public String shopping() {
		return "shopping";
	}
	
}

MyController

package com.javalec.spring_12_5;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;

@Controller
public class MyController {
	@RequestMapping("shopping2")
	public String shopping2() {
		return "shopping2";
	}
}

예제 4

HomeController.java

package com.javalec.spring_12_6;

import java.text.DateFormat;
import java.util.Date;
import java.util.Locale;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;

/**
 * Handles requests for the application home page.
 */
@Controller
@RequestMapping("/board")
public class HomeController {
	
	private static final Logger logger = LoggerFactory.getLogger(HomeController.class);
	
	/**
	 * Simply selects the home view to render by returning its name.
	 */
	@RequestMapping(value = "/", method = RequestMethod.GET)
	public String home(Locale locale, Model model) {
		logger.info("Welcome home! The client locale is {}.", locale);
		
		Date date = new Date();
		DateFormat dateFormat = DateFormat.getDateTimeInstance(DateFormat.LONG, DateFormat.LONG, locale);
		
		String formattedDate = dateFormat.format(date);
		
		model.addAttribute("serverTime", formattedDate );
		
		return "home";
	}
	@RequestMapping("write")
	public String write(Model model) {
		model.addAttribute("id", "aaa");
		
		return "board/write";
	}
}

write.jsp

<%@ page language="java" contentType="text/html; charset=EUC-KR"
    pageEncoding="EUC-KR"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="EUC-KR">
<title>Insert title here</title>
</head>
<body>
	write.jsp입니다.
	id : ${id}
</body>
</html>

예제 5

HomeController .jsp

package com.javalec.spring_12_ex_1;

import java.text.DateFormat;
import java.util.Date;
import java.util.Locale;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;

/**
 * Handles requests for the application home page.
 */
@Controller
public class HomeController {
	
	private static final Logger logger = LoggerFactory.getLogger(HomeController.class);
	
	/**
	 * Simply selects the home view to render by returning its name.
	 */
	@RequestMapping(value = "/", method = RequestMethod.GET)
	public String home(Locale locale, Model model) {
		logger.info("Welcome home! The client locale is {}.", locale);
		
		Date date = new Date();
		DateFormat dateFormat = DateFormat.getDateTimeInstance(DateFormat.LONG, DateFormat.LONG, locale);
		
		String formattedDate = dateFormat.format(date);
		
		model.addAttribute("serverTime", formattedDate );
		
		return "home";
	}

	@RequestMapping("board/content")
	public String view() {
		return "board/content";
	}
	
}

content.jsp


<%@ page language="java" contentType="text/html; charset=EUC-KR"
    pageEncoding="EUC-KR"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="EUC-KR">
<title>Insert title here</title>
</head>
<body>
	content.jsp입니다.<br>
	<!-- <img src="spring_ex_12_1/google.png"> -->
	<!-- <img src="/spring_ex_12_1/google.png"> -->
	<img src="../resources/google.png">
	<img src="../resources/googlelogo.png">
</body>
</html>

applicationCTX.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans:beans xmlns="http://www.springframework.org/schema/mvc"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xmlns:beans="http://www.springframework.org/schema/beans"
	xmlns:context="http://www.springframework.org/schema/context"
	xsi:schemaLocation="http://www.springframework.org/schema/mvc https://www.springframework.org/schema/mvc/spring-mvc.xsd
		http://www.springframework.org/schema/beans https://www.springframework.org/schema/beans/spring-beans.xsd
		http://www.springframework.org/schema/context https://www.springframework.org/schema/context/spring-context.xsd">

	<!-- DispatcherServlet Context: defines this servlet's request-processing infrastructure -->
	
	<!-- Enables the Spring MVC @Controller programming model -->
	<annotation-driven />

	<!-- Handles HTTP GET requests for /resources/** by efficiently serving up static resources in the ${webappRoot}/resources directory -->
	<resources mapping="/resources/**" location="/resources/" />

	<!-- Resolves views selected for rendering by @Controllers to .jsp resources in the /WEB-INF/views directory -->
	<beans:bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
		<beans:property name="prefix" value="/WEB-INF/views/" />
		<beans:property name="suffix" value=".jsp" />
	</beans:bean>
	
	<context:component-scan base-package="com.javalec.spring_12_ex_1" />
	
	
	
</beans:beans>

예제 6

HomeController

package com.javalec.spring_ex_12_1a;

import java.text.DateFormat;
import java.util.Date;
import java.util.Locale;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;

/**
 * Handles requests for the application home page.
 */
@Controller
public class HomeController {
	
	private static final Logger logger = LoggerFactory.getLogger(HomeController.class);
	
	/**
	 * Simply selects the home view to render by returning its name.
	 */
	@RequestMapping(value = "/", method = RequestMethod.GET)
	public String home(Locale locale, Model model) {
		logger.info("Welcome home! The client locale is {}.", locale);
		
		Date date = new Date();
		DateFormat dateFormat = DateFormat.getDateTimeInstance(DateFormat.LONG, DateFormat.LONG, locale);
		
		String formattedDate = dateFormat.format(date);
		
		model.addAttribute("serverTime", formattedDate );
		
		return "home";
	}
	
	@RequestMapping("car/tesla")
	public String view() {
		return "car/tesla";
	}
	
}

servlet-context.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans:beans xmlns="http://www.springframework.org/schema/mvc"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xmlns:beans="http://www.springframework.org/schema/beans"
	xmlns:context="http://www.springframework.org/schema/context"
	xsi:schemaLocation="http://www.springframework.org/schema/mvc https://www.springframework.org/schema/mvc/spring-mvc.xsd
		http://www.springframework.org/schema/beans https://www.springframework.org/schema/beans/spring-beans.xsd
		http://www.springframework.org/schema/context https://www.springframework.org/schema/context/spring-context.xsd">

	<!-- DispatcherServlet Context: defines this servlet's request-processing infrastructure -->
	
	<!-- Enables the Spring MVC @Controller programming model -->
	<annotation-driven />

	<!-- Handles HTTP GET requests for /resources/** by efficiently serving up static resources in the ${webappRoot}/resources directory -->
	<resources mapping="/resources/**" location="/resources/" />
	<resources mapping="/carResources/**" location="/carResources/" />

	<!-- Resolves views selected for rendering by @Controllers to .jsp resources in the /WEB-INF/views directory -->
	<beans:bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
		<beans:property name="prefix" value="/WEB-INF/views/" />
		<beans:property name="suffix" value=".jsp" />
	</beans:bean>
	
	<context:component-scan base-package="com.javalec.spring_ex_12_1a" />
	
	
	
</beans:beans>

tesla.jsp

<%@ page language="java" contentType="text/html; charset=EUC-KR"
    pageEncoding="EUC-KR"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="EUC-KR">
<title>Insert title here</title>
</head>
<body>
	tesla.jsp 입니다.<br>
	
	1. 모델S <img src="../carResources/modelS.png"><br>
	2. 모델X <img src="../carResources/modelX.png"><br>
	3. 모델Y <img src="../carResources/modelY.png">
	
</body>
</html>
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이전 포스트

2022.10.06 Spring

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