Day23. spring을 알아보자_세팅

1. 프로젝트 만들기.

2. main에 directory를 눌러서 java를 넣어준다.

3. java에 package로 'com.naver.user.controller를 만든다.

• Controller를 만들 거니 먼저 생성하려고 했으나 기본 세팅을 안해서 만들어지지 않았다.
• 어제 수업시간에 했던 pom.xml / spring파일 통채로 복사 / web.xml 통째로 복사하여 세팅.
  세팅 1. pom.xml

  <dependencies>
  
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-context</artifactId>
      <version>5.3.20</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-webmvc</artifactId>
      <version>5.3.20</version>
    </dependency>

    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-jdbc</artifactId>
      <version>5.3.20</version>
    </dependency>

    <dependency>
      <groupId>org.apache.commons</groupId>
      <artifactId>commons-dbcp2</artifactId>
      <version>2.9.0</version>
    </dependency>

    <dependency>
      <groupId>mysql</groupId>
      <artifactId>mysql-connector-java</artifactId>
      <version>8.0.33</version>
    </dependency>

    <dependency>
      <groupId>javax.servlet.jsp</groupId>
      <artifactId>jsp-api</artifactId>
      <version>2.1</version>
      <scope>provided</scope>
    </dependency>

    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>javax.servlet-api</artifactId>
      <version>3.1.0</version>
      <scope>provided</scope>
    </dependency>

    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>jstl</artifactId>
      <version>1.2</version>
    </dependency>

    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>3.8.1</version>
      <scope>test</scope>
    </dependency>
  </dependencies>
  <build>
    <finalName>Day23_spring</finalName>
    
    <plugins>
      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-compiler-plugin</artifactId>
        <version>2.5.1</version>
        <configuration>
          <source>11</source>
          <target>11</target>
          <compilerArgument>-Xlint:all</compilerArgument>
          <showWarnings>true</showWarnings>
          <showDeprecation>true</showDeprecation>
        </configuration>
      </plugin>
    </plugins>
  </build>
</project>

세팅 2.web.xml - 전체 복붙

<!DOCTYPE web-app PUBLIC
        "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
        "http://java.sun.com/dtd/web-app_2_3.dtd" >

<web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://java.sun.com/xml/ns/javaee https://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
  <display-name>Archetype Created Web Application</display-name>
  <servlet>
    <servlet-name>appServlet</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <init-param>
      <param-name>contextConfigLocation</param-name>
      <param-value>spring/appServlet/servlet-context.xml</param-value>
    </init-param>

  </servlet>
  <servlet-mapping>
    <servlet-name>appServlet</servlet-name>
    <url-pattern>/</url-pattern>
    <!--  위의 /는 기본 설정에 나오는 것. '/안녕' 이런 식으로 하면 이게 첫 화면에 주소로 뜸?-->
  </servlet-mapping>
  <filter>
    <filter-name>setCharacterEncodingFilter</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>setCharacterEncodingFilter</filter-name>
    <url-pattern>/*</url-pattern>
  </filter-mapping>
</web-app>

세팅 3. webapp 아래 spring폴더는 통째로 복사해서 가져왔다.

세팅 3-1. 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">
<!--  Enable  @Controller를 사용하게 해주는것. <annotation-driven /> 이걸해야 사용이 가능하다. -->
       <annotation-driven />
       <context:component-scan base-package="com.naver" />
       <!--bean 자바로치면 static?-->
       <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>
</beans:beans>

세팅 3-2. root-context.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"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">
</beans>

이렇게 세팅을 하고 나니 @Controller가 생성되었다.

수업을 들으며 나중 복습을 위해, 또 언젠가 다시 사용할 때 기억할 수 있도록 메모한다고 했는데도 이렇게 빠진 순서가 있다. 이로 인해 무엇이 필요한지를 다시 생각해볼 수 있었다. (그렇지만 나중에 사용하는 것들은 대부분 자동으로 생성해주는 것들이 많아서 이 부분들을 모두 다 알필요는 없다고 했던 것 같다.)