java reflection init
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kim
49
reflect/pom.xml
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49
reflect/pom.xml
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<?xml version="1.0" encoding="UTF-8"?>
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<project xmlns="http://maven.apache.org/POM/4.0.0"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<groupId>com.example</groupId>
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<artifactId>reflect</artifactId>
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<version>1.0-SNAPSHOT</version>
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<name>reflect</name>
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<packaging>war</packaging>
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<properties>
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<maven.compiler.target>1.8</maven.compiler.target>
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<maven.compiler.source>1.8</maven.compiler.source>
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<junit.version>5.7.0</junit.version>
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</properties>
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<dependencies>
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<dependency>
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<groupId>javax.servlet</groupId>
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<artifactId>javax.servlet-api</artifactId>
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<version>4.0.1</version>
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<scope>provided</scope>
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</dependency>
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<dependency>
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<groupId>org.junit.jupiter</groupId>
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<artifactId>junit-jupiter-api</artifactId>
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<version>${junit.version}</version>
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<scope>test</scope>
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</dependency>
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<dependency>
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<groupId>org.junit.jupiter</groupId>
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<artifactId>junit-jupiter-engine</artifactId>
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<version>${junit.version}</version>
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<scope>test</scope>
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</dependency>
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</dependencies>
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<build>
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<plugins>
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<plugin>
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<groupId>org.apache.maven.plugins</groupId>
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<artifactId>maven-war-plugin</artifactId>
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<version>3.3.0</version>
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</plugin>
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</plugins>
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</build>
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</project>
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27
reflect/src/main/java/com/example/reflect/HelloServlet.java
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27
reflect/src/main/java/com/example/reflect/HelloServlet.java
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package com.example.reflect;
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import java.io.*;
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import javax.servlet.http.*;
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import javax.servlet.annotation.*;
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@WebServlet(name = "helloServlet", value = "/hello-servlet")
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public class HelloServlet extends HttpServlet {
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private String message;
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public void init() {
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message = "Hello World!";
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}
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public void doGet(HttpServletRequest request, HttpServletResponse response) throws IOException {
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response.setContentType("text/html");
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// Hello
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PrintWriter out = response.getWriter();
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out.println("<html><body>");
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out.println("<h1>" + message + "</h1>");
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out.println("</body></html>");
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}
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public void destroy() {
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}
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}
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package com.example.reflect.controller;
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public class UserController {
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public void join(){
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System.out.println("join() 함수 호출");
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}
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public void login(){
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System.out.println("login()함수 호출");
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}
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}
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package com.example.reflect.filter;
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import com.example.reflect.controller.UserController;
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import javax.servlet.*;
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import javax.servlet.http.HttpServletRequest;
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import javax.servlet.http.HttpServletResponse;
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import java.io.IOException;
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public class Dispatcher implements Filter {
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@Override
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public void doFilter(ServletRequest req, ServletResponse resp, FilterChain chain)
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throws ServletException, IOException {
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HttpServletRequest request = (HttpServletRequest) req;
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HttpServletResponse response = (HttpServletResponse) resp;
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// System.out.println("컨텍스트 : " + request.getContextPath());
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// System.out.println("식별자주소 : " + request.getRequestURI());
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// System.out.println("전체주소 : " + request.getRequestURL());
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String endPoint = request.getRequestURI().replaceAll(request.getContextPath(), "");
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UserController userController = new UserController();
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if(endPoint.equals("/join")){
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userController.join();
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}else if(endPoint.equals("/login")){
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userController.login();
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}
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}
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}
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19
reflect/src/main/webapp/WEB-INF/web.xml
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19
reflect/src/main/webapp/WEB-INF/web.xml
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<?xml version="1.0" encoding="UTF-8"?>
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<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"
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version="4.0">
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<filter>
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<filter-name>dispatcher</filter-name>
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<filter-class>com.example.reflect.filter.Dispatcher</filter-class>
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</filter>
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<!-- 해당 필터는 모든 필터들 중에서 가장 마지막에 실행되어야 하는 필터 -->
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<!-- 필터 순서는 filter-mapping 여러개 있을 때 위에서 부터 순차적으로 실행됨 -->
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<filter-mapping>
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<filter-name>dispatcher</filter-name>
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<url-pattern>/*</url-pattern>
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</filter-mapping>
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</web-app>
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13
reflect/src/main/webapp/index.jsp
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13
reflect/src/main/webapp/index.jsp
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<%@ page contentType="text/html; charset=UTF-8" pageEncoding="UTF-8" %>
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<!DOCTYPE html>
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<html>
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<head>
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<title>JSP - Hello World</title>
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</head>
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<body>
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<h1><%= "Hello World!ㅎㅇ" %>
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</h1>
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<br/>
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<a href="hello-servlet">Hello Servlet</a>
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</body>
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</html>
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BIN
reflect/target/classes/com/example/reflect/HelloServlet.class
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reflect/target/classes/com/example/reflect/HelloServlet.class
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5
reflect/target/reflect-1.0-SNAPSHOT/META-INF/MANIFEST.MF
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5
reflect/target/reflect-1.0-SNAPSHOT/META-INF/MANIFEST.MF
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Manifest-Version: 1.0
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Created-By: IntelliJ IDEA
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Built-By: 김우진
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Build-Jdk: 11.0.8
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19
reflect/target/reflect-1.0-SNAPSHOT/WEB-INF/web.xml
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19
reflect/target/reflect-1.0-SNAPSHOT/WEB-INF/web.xml
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<?xml version="1.0" encoding="UTF-8"?>
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<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"
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version="4.0">
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<filter>
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<filter-name>dispatcher</filter-name>
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<filter-class>com.example.reflect.filter.Dispatcher</filter-class>
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</filter>
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<!-- 해당 필터는 모든 필터들 중에서 가장 마지막에 실행되어야 하는 필터 -->
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<!-- 필터 순서는 filter-mapping 여러개 있을 때 위에서 부터 순차적으로 실행됨 -->
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<filter-mapping>
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<filter-name>dispatcher</filter-name>
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<url-pattern>/*</url-pattern>
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</filter-mapping>
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</web-app>
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13
reflect/target/reflect-1.0-SNAPSHOT/index.jsp
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13
reflect/target/reflect-1.0-SNAPSHOT/index.jsp
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<%@ page contentType="text/html; charset=UTF-8" pageEncoding="UTF-8" %>
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<!DOCTYPE html>
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<html>
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<head>
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<title>JSP - Hello World</title>
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</head>
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<body>
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<h1><%= "Hello World!ㅎㅇ" %>
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</h1>
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<br/>
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<a href="hello-servlet">Hello Servlet</a>
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</body>
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</html>
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