728x90
index.html
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
<h1>상태코드 확인</h1>
<form action="hello" method="get">
<table>
<tr>
<td>상태코드</td>
<td>
<select name = "code">
<option value = "200">SC_OK</option>
<option value = "404">SC_NOT_FOUND</option>
<option value = "500">SC_INTERNAL_SERVER_ERROR</option>
</select>
</td>
</tr>
</table>
<input type = "submit" value = "이동">
</form>
</body>
</html>HelloServlet
package hello;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class HelloServlet extends HttpServlet {
@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
//html code 데이터를 html로 날려준다
resp.setContentType("text/html; charset=utf-8");
PrintWriter pw = resp.getWriter();
pw.println("<html>");
pw.println("<head>");
pw.println("<title>제목</title>");
pw.println("</head>");
pw.println("<body>");
pw.println("<h3>HelloServlet</h3>");
String code = req.getParameter("code");
if(code.equals("200")) {
pw.println("<p>200:SC_OK</p>");
}else {
if(code.equals("404")) {
resp.sendError(HttpServletResponse.SC_NOT_FOUND, "못찾겠다는 말입니다");
}else if(code.equals("500")) {
resp.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR,"코드가 틀렸다는 에러입니다");
}
}
pw.println("</body>");
pw.println("</html>");
pw.close();
}
@Override
protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
}
}XML
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" version="3.1">
<display-name>sample04</display-name>
<welcome-file-list>
<welcome-file>index.html</welcome-file>
<welcome-file>index.htm</welcome-file>
<welcome-file>index.jsp</welcome-file>
<welcome-file>default.html</welcome-file>
<welcome-file>default.htm</welcome-file>
<welcome-file>default.jsp</welcome-file>
</welcome-file-list>
<servlet>
<servlet-name>hello</servlet-name>
<servlet-class>hello.HelloServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>hello</servlet-name>
<url-pattern>/hello</url-pattern>
</servlet-mapping>
</web-app>728x90
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