Spring MVC 예제 - 직원 관리 프로그램

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Spring MVC 예제 - 직원 관리 프로그램

woolbro 2019. 7. 15. 22:39

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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