AI Convergence

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">

<modelVersion>4.0.0</modelVersion>

<groupId>com.ysyun</groupId>

<artifactId>DashboardTest</artifactId>

<version>0.0.1-SNAPSHOT</version>

<packaging>war</packaging>

<properties>

<spring.version>3.2.0.RELEASE</spring.version>

<junit.version>4.11</junit.version>

<jdk.version>1.6</jdk.version>

</properties>

<dependencies>

<!-- Spring 3 dependencies -->

<dependency>

<groupId>org.springframework</groupId>

<artifactId>spring-core</artifactId>

<version>${spring.version}</version>

</dependency>

<dependency>

<groupId>org.springframework</groupId>

<artifactId>spring-web</artifactId>

<version>${spring.version}</version>

</dependency>

<dependency>

<groupId>org.springframework</groupId>

<artifactId>spring-webmvc</artifactId>

<version>${spring.version}</version>

</dependency>

<dependency>

<groupId>junit</groupId>

<artifactId>junit</artifactId>

<version>${junit.version}</version>

<scope>test</scope>

</dependency>

</dependencies>

<build>

<finalName>DashboardTest</finalName>

<plugins>

<plugin>

<groupId>org.apache.maven.plugins</groupId>

<artifactId>maven-compiler-plugin</artifactId>

<version>3.0</version>

<configuration>

<source>${jdk.version}</source>

<target>${jdk.version}</target>

</configuration>

</plugin>

</plugins>

</build>

</project>

package com.lge.dashboard;

import org.springframework.stereotype.Controller;

import org.springframework.ui.ModelMap;

import org.springframework.web.bind.annotation.PathVariable;

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

import org.springframework.web.bind.annotation.RequestMethod;

@Controller

@RequestMapping("/")

public class HelloController {

@RequestMapping(value="/welcome", method = RequestMethod.GET)

public String welcome(ModelMap model) {

model.addAttribute("message", "Maven Web Project + Spring 3 MVC - welcome()");

//Spring uses InternalResourceViewResolver and return back index.jsp

return "index";

}

@RequestMapping(value="/welcome/{name}", method = RequestMethod.GET)

public String welcomeName(@PathVariable String name, ModelMap model) {

model.addAttribute("message", "Maven Web Project + Spring 3 MVC - " + name);

return "index";

}

}

<?xml version="1.0" encoding="UTF-8"?>

<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"

xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"

id="WebApp_ID" version="3.0">

<display-name>Counter Web Application</display-name>

<servlet>

<servlet-name>mvc-dispatcher</servlet-name>

<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>

<load-on-startup>1</load-on-startup>

</servlet>

<servlet-mapping>

<servlet-name>mvc-dispatcher</servlet-name>

<url-pattern>/</url-pattern>

</servlet-mapping>

<context-param>

<param-name>contextConfigLocation</param-name>

<param-value>/WEB-INF/mvc-dispatcher-servlet.xml</param-value>

</context-param>

<listener>

<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>

</listener>

</web-app>

<beans xmlns="http://www.springframework.org/schema/beans"

xmlns:context="http://www.springframework.org/schema/context"

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-3.0.xsd

        http://www.springframework.org/schema/context 

        http://www.springframework.org/schema/context/spring-context-3.0.xsd">

<context:component-scan base-package="com.lge.*" />

<bean

class="org.springframework.web.servlet.view.InternalResourceViewResolver">

<property name="prefix">

<value>/WEB-INF/pages/</value>

</property>

<property name="suffix">

<value>.jsp</value>

</property>

</bean>

</beans>

<html>

<body>

<h2>Hello World!</h2>

<h4>Message : ${message}</h1>

</body>

</html>

Goal은 ant의 target과 같은 개념으로, mvn의 경우 pre-defined goal을 가지고 있다.

mvn compile : 컴파일 수행

mvn package : jar 파일로 패키징

mvn test : JUnit 테스트 수행

mvn install : local repository (PC내의 디렉토리)에 해당 jar 파일을 저장 

mvn deploy  : remote repository (Nexus)에 jar 파일 저장

mvn clean : 컴파일 내용 모두 삭제

mvn build : 위의 예제는 일반적은 spring-java 코드로 build goal을 제공하지 않는다. 

(Eclipse에서 run as하면 나와서 헷갈리게 만드는데) build goal을 지원하는 프로젝트를 만들거나 또는 pom.xml안에 인위적으로 build goal을 지정해줘야 한다. 보통 clean install 등 여러 명령을 스페이스로 구분하여 파라미터를 줄 수 있다 

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">

<modelVersion>4.0.0</modelVersion>

<groupId>com.ysyun</groupId>

<artifactId>DashboardTest</artifactId>

<version>0.0.1-SNAPSHOT</version>

<packaging>war</packaging>

<url>http://maven.apache.org</url>

<properties>

<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>

<spring.version>3.2.0.RELEASE</spring.version>

<junit.version>4.11</junit.version>

<jdk.version>1.6</jdk.version>

</properties>

<dependencies>

<dependency>

<groupId>org.springframework</groupId>

<artifactId>spring-core</artifactId>

<version>${spring.version}</version>

</dependency>

<dependency>

<groupId>org.springframework</groupId>

<artifactId>spring-web</artifactId>

<version>${spring.version}</version>

</dependency>

<dependency>

<groupId>org.springframework</groupId>

<artifactId>spring-webmvc</artifactId>

<version>${spring.version}</version>

</dependency>

<dependency>

<groupId>junit</groupId>

<artifactId>junit</artifactId>

<version>${junit.version}</version>

<scope>test</scope>

</dependency>

</dependencies>

<build>

<finalName>DashboardTest</finalName>

<plugins>

<plugin>

<groupId>org.apache.maven.plugins</groupId>

<artifactId>maven-compiler-plugin</artifactId>

<version>3.0</version>

<configuration>

<source>${jdk.version}</source>

<target>${jdk.version}</target>

</configuration>

</plugin>

</plugins>

</build>

</project>

RequiredAnnotationBeanPostProcessor – (@Required)

CommonAnnotationBeanPostProcessor – (@PostConstruct, @PreDestroy, @Resource, etc.)

AutowiredAnnotationBeanPostProcessor – (@Autowired, @Value, @Inject, etc.)

PersistenceAnnotationBeanPostProcessor – (@PersistenceUnit, @PersistenceContext, etc.)

<context:annotation-config/>

<context:component-scan base-package="com.gordondickens.enterprisespring" use-default-filters="false">

<context:exclude-filter 

   expression="org.springframework.stereotype.Controller"

   type="annotation"/>

</context:component-scan>

+ Component scanning should ONLY be configured in the bootstrap config file, not in every XML config file

+ Do NOT also include the <context:annotation-config/> directive, it is automatically included by component scan

+ Do NOT start scanning from “com” and/or “org”, as this will scan ALL sub packages in all of the project and jars for candidates!

+ Be as specific as possible with the packages

+ Do NOT cross application boundaries with component-scan

  + Create an applicationContext-services.xml for scanning services

  + Create an applicationContext-persistence.xml for persistence and entity beans

  + Create an applicationContext-webmvc.xml for persistence and entity beans

  + Create an applicationContext-webservice.xml for web service beans

  + Import these references into the applicationContext-bootstrap.xml to these elements

Why separate the discovery files into layer specific configuration?

  + Unit testing is easier as discovery of beans is more specific

  + Allows the project to be separated into multiple Jar/Wars

  + Lowers risk of widely scoped discovery issues, overscanning and beans being replaced by multiple scanners