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이번 포스팅은 Spring MVC의 예제입니다. 간단한 직원 관리 프로그램을 작성 해 보려고 합니다.
Spring 4.1.4 버전을 이용하고, DB 링크는 아직 걸지 않았습니다.
직접 리스트를 추가 해 주는 형태로 데이터를 넣었습니다.
작성한 프로그램 구조는 아래와 같습니다
pom.xml
<?xml version="1.0" encoding="UTF-8"?>
<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 https://maven.apache.org/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.woolbro</groupId>
<artifactId>app</artifactId>
<name>SpringMVC_woolbro_example1</name>
<packaging>war</packaging>
<version>1.0.0-BUILD-SNAPSHOT</version>
<properties>
<java-version>1.8</java-version>
<org.springframework-version>4.1.4.RELEASE</org.springframework-version>
<org.aspectj-version>1.6.10</org.aspectj-version>
<org.slf4j-version>1.6.6</org.slf4j-version>
</properties>
<dependencies>
<!-- Spring -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>${org.springframework-version}</version>
<exclusions>
<!-- Exclude Commons Logging in favor of SLF4j -->
<exclusion>
<groupId>commons-logging</groupId>
<artifactId>commons-logging</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${org.springframework-version}</version>
</dependency>
<!-- AspectJ -->
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjrt</artifactId>
<version>${org.aspectj-version}</version>
</dependency>
<!-- Logging -->
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>${org.slf4j-version}</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>jcl-over-slf4j</artifactId>
<version>${org.slf4j-version}</version>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>${org.slf4j-version}</version>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.15</version>
<exclusions>
<exclusion>
<groupId>javax.mail</groupId>
<artifactId>mail</artifactId>
</exclusion>
<exclusion>
<groupId>javax.jms</groupId>
<artifactId>jms</artifactId>
</exclusion>
<exclusion>
<groupId>com.sun.jdmk</groupId>
<artifactId>jmxtools</artifactId>
</exclusion>
<exclusion>
<groupId>com.sun.jmx</groupId>
<artifactId>jmxri</artifactId>
</exclusion>
</exclusions>
<scope>runtime</scope>
</dependency>
<!-- @Inject -->
<dependency>
<groupId>javax.inject</groupId>
<artifactId>javax.inject</artifactId>
<version>1</version>
</dependency>
<!-- Servlet -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>2.5</version>
<scope>provided</scope>
</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>jstl</artifactId>
<version>1.2</version>
</dependency>
<!-- Test -->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.7</version>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<artifactId>maven-eclipse-plugin</artifactId>
<version>2.9</version>
<configuration>
<additionalProjectnatures>
<projectnature>org.springframework.ide.eclipse.core.springnature</projectnature>
</additionalProjectnatures>
<additionalBuildcommands>
<buildcommand>org.springframework.ide.eclipse.core.springbuilder</buildcommand>
</additionalBuildcommands>
<downloadSources>true</downloadSources>
<downloadJavadocs>true</downloadJavadocs>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>2.5.1</version>
<configuration>
<source>1.8</source>
<target>1.8</target>
<compilerArgument>-Xlint:all</compilerArgument>
<showWarnings>true</showWarnings>
<showDeprecation>true</showDeprecation>
</configuration>
</plugin>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>exec-maven-plugin</artifactId>
<version>1.2.1</version>
<configuration>
<mainClass>org.test.int1.Main</mainClass>
</configuration>
</plugin>
</plugins>
</build>
</project>
Spring MVC를 처음 시작 할 때에, 대부분 Java version 을 기본으로 1.6 으로 잡아주는데요, pom.xml에서 1.8 버전으로 수정 해 주도록 하겠습니다 :)
상단의 <java-version> 1.6 </java-version> 의 버전 숫자를 1.8로 바꾸어주겠습니다.
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/" />
<context:component-scan base-package="com.woolbro.app" />
<!-- 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.woolbro.app" />
</beans:beans>
root-context.xml
root-context.xml은 특별히 수정하지 않았습니다 :) 기본적인 파일로 두시고 작업 하면 됩니다.
web.xml
<?xml version="1.0" encoding="UTF-8"?>
<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">
<!-- The definition of the Root Spring Container shared by all Servlets and Filters -->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/spring/root-context.xml</param-value>
</context-param>
<!-- Creates the Spring Container shared by all Servlets and Filters -->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<!-- Processes application requests -->
<servlet>
<servlet-name>appServlet</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/spring/appServlet/servlet-context.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>appServlet</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
</web-app>
Controller (EmployeeController.java)
package com.woolbro.app.controller;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import com.woolbro.app.service.EmployeeManager;
@Controller
@RequestMapping("/employee-module")
public class EmployeeController {
private static final Logger logger = LoggerFactory.getLogger(EmployeeController.class);
@Autowired
EmployeeManager manager;
@RequestMapping(value = "/getAllEmployees", method = RequestMethod.GET)
public String getAllEmployees(Model model) {
model.addAttribute("employees", manager.getAllEmployees());
return "employeesListDisplay";
}
}
DAO
DAO는 interface와 implements로 나누어 작성했습니다.
DAO.java
package com.woolbro.app.dao;
import java.util.List;
import com.woolbro.app.model.EmployeeVO;
public interface EmployeeDAO {
public List<EmployeeVO> getAllEmployees();
}
DAOImpl.java
package com.woolbro.app.dao;
import java.util.ArrayList;
import java.util.List;
import org.springframework.stereotype.Repository;
import com.woolbro.app.model.EmployeeVO;
@Repository
public class EmployeeDAOImpl implements EmployeeDAO {
public List<EmployeeVO> getAllEmployees()
{
List<EmployeeVO> employees = new ArrayList<EmployeeVO>();
EmployeeVO vo1 = new EmployeeVO();
vo1.setId(1);
vo1.setFirstName("Developer");
vo1.setLastName("wool");
employees.add(vo1);
EmployeeVO vo2 = new EmployeeVO();
vo2.setId(2);
vo2.setFirstName("Prayer");
vo2.setLastName("Yuna");
employees.add(vo2);
return employees;
}
}
VO(Model)
package com.woolbro.app.model;
import java.io.Serializable;
public class EmployeeVO implements Serializable {
private static final long serialVersionUID = 1L;
private Integer id;
private String firstName;
private String lastName;
// Setters and Getters
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getFirstName() {
return firstName;
}
public void setFirstName(String firstName) {
this.firstName = firstName;
}
public String getLastName() {
return lastName;
}
public void setLastName(String lastName) {
this.lastName = lastName;
}
public static long getSerialversionuid() {
return serialVersionUID;
}
@Override
public String toString() {
return "EmployeeVO [id=" + id + ", firstName=" + firstName + ", lastName=" + lastName + "]";
}
}
Service
Service또한 interface와 implements로 나누어 작성 했습니다.
EmployeeManager.java
package com.woolbro.app.service;
import java.util.List;
import com.woolbro.app.model.EmployeeVO;
public interface EmployeeManager {
public List<EmployeeVO> getAllEmployees();
}
EmployeeManagerImpl.java
package com.woolbro.app.service;
import java.util.List;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import com.woolbro.app.dao.EmployeeDAO;
import com.woolbro.app.model.EmployeeVO;
@Service
public class EmployeeManagerImpl implements EmployeeManager {
@Autowired
EmployeeDAO dao;
public List<EmployeeVO> getAllEmployees()
{
return dao.getAllEmployees();
}
}
View
마지막으로, 화면에 출력 해 줄 jsp 파일입니다.
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
<%@ taglib prefix="fmt" uri="http://java.sun.com/jsp/jstl/fmt"%>
<html>
<head>
<title>Spring MVC Hello World</title>
</head>
<body>
<h2>All Employees in System</h2>
<table border="1">
<tr>
<th>Employee Id</th>
<th>First Name</th>
<th>Last Name</th>
</tr>
<c:forEach items="${employees}" var="employee">
<tr>
<td>${employee.id}</td>
<td>${employee.firstName}</td>
<td>${employee.lastName}</td>
</tr>
</c:forEach>
</table>
</body>
</html>
톰캣과 연동시켜, 실행 된다면 성공입니다!!
어노테이션이 다수 등장했는데요, 이후에 어노테이션에 대해서 한번 다루도록 하겠습니다 :)
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