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- Filter 이용해 한글 인코딩
setCharacterEncoding을 주석처리
- LoginTest 생성
package sec03.ex01;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
@WebServlet("/login")
public class LoginTest extends HttpServlet {
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// request.setCharacterEncoding("utf-8");
response.setContentType("text/html;charset=utf-8");
PrintWriter out = response.getWriter();
String userName = request.getParameter("user_name");
String userPw = request.getParameter("user_pw");
out.print("이름 : " + userName + "<br>");
out.print("비밀번호 : " + userPw + "<br>");
}
}
- login.html 생성
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
<form action="login" method="post">
이름 : <input type="text" name="user_name"><br>
비밀번호 : <input type="password" name="user_pw"><br>
<button>로그인</button>
</form>
</body>
</html>
한글로 로그인 해보면 깨짐
- EncoderFilter 생성
package sec03.ex01;
import java.io.IOException;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
@WebFilter("/*")
public class EncoderFilter implements Filter{
ServletContext ctx;
@Override
public void init(FilterConfig filterConfig) throws ServletException {
ctx = filterConfig.getServletContext();
}
@Override
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
request.setCharacterEncoding("utf-8");
response.setContentType("text/html;charset=utf-8");
// 컨텍스트 패스
String contextPath = ((HttpServletRequest)request).getContextPath();
String requestURI = ((HttpServletRequest)request).getRequestURI();
// String realPath = request.getRealPath(requestURI); // 디프리케이티드
String realPath = ctx.getRealPath(requestURI);
System.out.println(contextPath);
System.out.println(requestURI);
System.out.println(realPath);
chain.doFilter(request, response);
}
}
request.realPath는 디프리케이트기 때문에 ServletContext로 받아와야함
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