web.xml
설정을 위한 설정 파일
WAS가 처음 구동될 때 web.xml을 읽어 웹 애플리케이션 설정을 구성
DispatcherServlet을 등록해주면서 스프링 설정 파일을 지정
DispatcherServlet은 초기화 과정에서 지정된 설정 파일을 이용해 스프링 컨테이너를 초기화
<servlet>
<servlet-name>dispatcherServlet</servlet-name>
<servlet-class>
org.springframework.web.servlet.DispatcherServlet
</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>
<!-- WEB/INF에 있는 spring폴더 안에 servlet-context.xml을 불러와라 -->
/WEB-INF/spring/servlet-context.xml
</param-value>
</init-param>
<!-- 제일 먼저 읽어라 -->
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>dispatcherServlet</servlet-name>
<url-pattern>*.do</url-pattern>
</servlet-mapping>
<!-- 한글설정 -->
<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>servlet-context.xml
web.xml에서 DispatcherServlet 등록 시 설정한 파일
설정 파일을 이용해 스프링 컨테이너 초기화
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd">
<!-- spring MVC annotation(주석문, 지시문)을 사용하기 위한 설정 -->
<context:annotation-config />
<!--
view폴더의 위치, 확장자명 설정 클래스 : InternalResourceViewResolver
InternalResourceViewResolver viewResolver = new InternalResourceViewResolver(); 객체생성
viewResolver.prefix = "/WEB-INF/views/" prefix변수에 "/WEB-INF/views/"값(확장자명) 설정
viewResolver.suffix = ".jsp" suffix변수에 .jsp 값(확장자명) 설정
-->
<bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/views/" />
<property name="suffix" value=".jsp" />
</bean>
<!-- 공통 패키지(기본경로) -->
<context:component-scan base-package="mul.cam.a" />
</beans>활용 간단 예제
HelloController.java
package mul.cam.a;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
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;
import mul.cam.a.dto.HumanDto;
@Controller
public class HelloController {
private static Logger logger = LoggerFactory.getLogger(HelloController.class);
//방식 : GET - 파라미터 오픈 / POST - 파라미터 비밀
@RequestMapping(value = "home.do", method = RequestMethod.GET)
public String homeMethod() {
//System.out.println("HelloController homeMethod() " + new Date());
logger.info("HelloController homeMethod() " + new Date());
return "home";
}home.jsp
<%@page import="mul.cam.a.dto.HumanDto"%>
<%@page import="java.util.List"%>
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
<h1>home.jsp</h1>
HelloController.java
//데이터를 갖고 이동
@RequestMapping(value = "hello.do", method = RequestMethod.GET)
public String hello(Model model) {
//짐싸!(이동)
String name = "박예린";
model.addAttribute("name", name); //==request.setAttribite
//잘가
return "home";
}home.jsp
<a href="hello.do">hello</a>
<%
String name = (String)request.getAttribute("name");
if(name != null && !name.equals("")){ //name이 null이 아니고 빈문자가 아닐 때
%>
이름 : <%=name %>
<%
}
%>
잠깐 복습!
form -> GET, POST 둘 다 가능
href -> GET만 가능
script type="text/javascript" -> GET만 가능
location.href=""
/script>
HelloController.java
@RequestMapping(value = "world.do", method = RequestMethod.POST)
public String world(String name, int age) {
//String name = req.getParameter("name"); -> 서블릿 방식
logger.info("HelloController world() " + new Date());
System.out.println("이름: " + name);
System.out.println("나이: " + age);
return "home";
}
@RequestMapping(value = "main.do", method = RequestMethod.POST)
public String mainMethod(HumanDto human) {
logger.info("HelloController mainMethod() " + new Date());
System.out.println(human.toString());
return "home";
}home.jsp
<!-- form - get,post방식 고르기 가능 -->
<form action="world.do" method="post">
이름 : <input type="text" name = "name"><br>
나이 : <input type="text" name = "age"><br>
<input type="submit" value="world로 이동">
</form>
<br><br>
<form action="world.do" method="post">
이름 : <input type="text" name = "name"><br>
나이 : <input type="text" name = "age"><br>
<input type="submit" value="main으로 이동">
</form>
mylist.do
-list
-출력 table
HumanDto.java
package mul.cam.a.dto;
import java.io.Serializable;
public class HumanDto implements Serializable{
private String name;
private int age;
public HumanDto() {
}
public HumanDto(String name, int age) {
super();
this.name = name;
this.age = age;
}
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;
}
@Override
public String toString() {
return "HumanDto [name=" + name + ", age=" + age + "]";
}
}HelloController.java
// {method = RequestMethod.GET, method = RequestMethod.POST}
@RequestMapping(value = "mylist.do", method = RequestMethod.GET)
public String mylist(String message, Model model) {
logger.info("HelloController mylist() " + new Date());
System.out.println("message" + message);
List<HumanDto> list = new ArrayList<>();
list.add(new HumanDto("홍길동",24));
list.add(new HumanDto("성춘향",26));
list.add(new HumanDto("일지매",44));
model.addAttribute("list",list);
return "home";
}home.jsp
<a href="mylist.do?message=하이">mylist</a>
<%
List<HumanDto> list = (List<HumanDto>)request.getAttribute("list");
if(list != null && list.isEmpty() == false){
%>
<table border="1">
<%
for(int i=0; i<list.size(); i++){
HumanDto dto = list.get(i);
%>
<tr>
<th><%=i + 1 %></th>
<td><%=dto.getName() %></td>
<td><%=dto.getAge() %></td>
</tr>
<%
}
%>
</table>
<%
}
%>
개발자를 꿈꾸는 귀여운 나