diff --git a/boot_gradle_security/src/main/java/com/boot/test1/config/CustomAuthenticationProvider.java b/boot_gradle_security/src/main/java/com/boot/test1/config/CustomAuthenticationProvider.java
index ee921f2..9bfb147 100644
--- a/boot_gradle_security/src/main/java/com/boot/test1/config/CustomAuthenticationProvider.java
+++ b/boot_gradle_security/src/main/java/com/boot/test1/config/CustomAuthenticationProvider.java
@@ -8,6 +8,7 @@ import org.springframework.security.authentication.BadCredentialsException;
 import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
 import org.springframework.security.core.Authentication;
 import org.springframework.security.core.AuthenticationException;
+import org.springframework.security.crypto.factory.PasswordEncoderFactories;
 import org.springframework.security.crypto.password.PasswordEncoder;
 import org.springframework.stereotype.Component;
 
@@ -19,6 +20,9 @@ public class CustomAuthenticationProvider implements AuthenticationProvider {
 
 	@Autowired
 	private AccountService accountService;
+	
+	@Autowired
+	private PasswordEncoder passwordEncoder;
 
 	private Logger log = LoggerFactory.getLogger(this.getClass());
 
@@ -28,8 +32,15 @@ public class CustomAuthenticationProvider implements AuthenticationProvider {
 		log.info("### authenticate ### ");
 
 		String username = (String) authentication.getPrincipal();
+		String password = (String) authentication.getCredentials();
+		String passwordEnc = passwordEncoder.encode(password);
 		
 		Account account = (Account) accountService.loadUserByUsername(username);
+		
+		// pw같은지 검증.
+		if ( !passwordEncoder.matches(password,account.getPassword())) {
+			throw new BadCredentialsException(username);
+		}
 
 		return new UsernamePasswordAuthenticationToken(account, account, account.getAuthorities());
 	}
diff --git a/boot_gradle_security/src/main/java/com/boot/test1/config/SecurityConfig.java b/boot_gradle_security/src/main/java/com/boot/test1/config/SecurityConfig.java
index 0a5a015..5cb1544 100644
--- a/boot_gradle_security/src/main/java/com/boot/test1/config/SecurityConfig.java
+++ b/boot_gradle_security/src/main/java/com/boot/test1/config/SecurityConfig.java
@@ -1,15 +1,27 @@
 package com.boot.test1.config;
 
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.security.config.annotation.web.builders.HttpSecurity;
 import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
 import org.springframework.security.crypto.factory.PasswordEncoderFactories;
 import org.springframework.security.crypto.password.PasswordEncoder;
+import org.springframework.security.web.authentication.AuthenticationFailureHandler;
+import org.springframework.security.web.authentication.AuthenticationSuccessHandler;
+
+import com.boot.test1.handler.CustomAuthenticationFailureHandler;
+import com.boot.test1.handler.CustomAuthenticationSuccessHandler;
 
 @Configuration
 public class SecurityConfig extends WebSecurityConfigurerAdapter{
 	
+	@Autowired
+	private AuthenticationSuccessHandler successHandler;
+	
+	@Autowired
+	private AuthenticationFailureHandler failureHandler;
+	
 	@Override
 	protected void configure(HttpSecurity http) throws Exception{
 		http
@@ -24,7 +36,9 @@ public class SecurityConfig extends WebSecurityConfigurerAdapter{
 						.loginPage("/login") // 로그인이 수행될 경로.
 						.loginProcessingUrl("/loginProcess")// 로그인form의  action과 일치시켜주어야 함.
 						.defaultSuccessUrl("/loginSuccess") // 로그인 성공 시 이동할 경로.
-						.failureUrl("/login?error=true") // 인증에 실패했을 때 보여주는 화면 url, 로그인 form으로 파라미터값 error=true로 보낸
+						//.failureUrl("/login?error=true") // 인증에 실패했을 때 보여주는 화면 url, 로그인 form으로 파라미터값 error=true로 보낸다.
+						.successHandler(successHandler)
+						.failureHandler(failureHandler)
 				.permitAll()
 				.and()
 			 .logout()
@@ -47,6 +61,17 @@ public class SecurityConfig extends WebSecurityConfigurerAdapter{
 	  public PasswordEncoder passwordEncoder() {
 	    return PasswordEncoderFactories.createDelegatingPasswordEncoder();
 	  }
-
+	  
+	  // 로그인 성공 처리를 위한 Handler
+	  @Bean
+	  public AuthenticationSuccessHandler successHandler() {
+	      return new CustomAuthenticationSuccessHandler("loginRedirect", "/login", false);
+	  }
+	  
+	  // 실패 처리를 위한 Handler
+	  @Bean
+	  public AuthenticationFailureHandler failureHandler() {
+		  return new CustomAuthenticationFailureHandler("username", "password" , "loginRedirect" , "securityExceptionMsg" , "/login?fail=true");
+	  }
 	
 }
\ No newline at end of file
diff --git a/boot_gradle_security/src/main/java/com/boot/test1/handler/CustomAuthenticationFailureHandler.java b/boot_gradle_security/src/main/java/com/boot/test1/handler/CustomAuthenticationFailureHandler.java
new file mode 100644
index 0000000..513725d
--- /dev/null
+++ b/boot_gradle_security/src/main/java/com/boot/test1/handler/CustomAuthenticationFailureHandler.java
@@ -0,0 +1,76 @@
+package com.boot.test1.handler;
+
+import java.io.IOException;
+
+import javax.servlet.ServletException;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+import org.springframework.security.core.AuthenticationException;
+import org.springframework.security.web.authentication.AuthenticationFailureHandler;
+
+public class CustomAuthenticationFailureHandler implements AuthenticationFailureHandler {
+	
+	private String loginIdName ;
+	private String loginPasswordName ;
+	private String loginRedirectName ;
+	private String exceptionMsgName ;
+	private String defaultFailureUrl ;
+	
+	public CustomAuthenticationFailureHandler(String loginIdName, String loginPasswordName, String loginRedirectName,
+			String exceptionMsgName, String defaultFailureUrl) {
+		this.loginIdName = loginIdName;
+		this.loginPasswordName = loginPasswordName;
+		this.loginRedirectName = loginRedirectName;
+		this.exceptionMsgName  = exceptionMsgName;
+		this.defaultFailureUrl = defaultFailureUrl;
+	}
+
+	public String getLoginIdName() {
+		return loginIdName;
+	}
+	public void setLoginIdName(String loginIdName) {
+		this.loginIdName = loginIdName;
+	}
+	public String getLoginPasswordName() {
+		return loginPasswordName;
+	}
+	public void setLoginPasswordName(String loginPasswordName) {
+		this.loginPasswordName = loginPasswordName;
+	}
+	public String getLoginRedirectName() {
+		return loginRedirectName;
+	}
+	public void setLoginRedirectName(String loginRedirectName) {
+		this.loginRedirectName = loginRedirectName;
+	}
+	public String getExceptionMsgName() {
+		return exceptionMsgName;
+	}
+	public void setExceptionMsgName(String exceptionMsgName) {
+		this.exceptionMsgName = exceptionMsgName;
+	}
+	public String getDefaultFailureUrl() {
+		return defaultFailureUrl;
+	}
+	public void setDefaultFailureUrl(String defaultFailureUrl) {
+		this.defaultFailureUrl = defaultFailureUrl;
+	}
+
+	@Override
+	public void onAuthenticationFailure(HttpServletRequest request, HttpServletResponse response,
+			AuthenticationException exception) throws IOException, ServletException {
+		
+		String loginId = request.getParameter(loginIdName);
+		String loginPw = request.getParameter(loginPasswordName);
+		String loginRedirect = request.getParameter(loginRedirectName);
+		
+		request.setAttribute(loginIdName, loginId);
+		request.setAttribute(loginPasswordName, loginPw);
+		request.setAttribute(loginRedirectName, loginRedirect);
+		
+		request.setAttribute(exceptionMsgName, exception.getMessage());
+		
+		request.getRequestDispatcher(defaultFailureUrl).forward(request, response);
+	}
+}
diff --git a/boot_gradle_security/src/main/java/com/boot/test1/handler/CustomAuthenticationSuccessHandler.java b/boot_gradle_security/src/main/java/com/boot/test1/handler/CustomAuthenticationSuccessHandler.java
new file mode 100644
index 0000000..1a11b09
--- /dev/null
+++ b/boot_gradle_security/src/main/java/com/boot/test1/handler/CustomAuthenticationSuccessHandler.java
@@ -0,0 +1,191 @@
+package com.boot.test1.handler;
+
+import java.io.IOException;
+
+import javax.servlet.ServletException;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import javax.servlet.http.HttpSession;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.security.core.Authentication;
+import org.springframework.security.web.DefaultRedirectStrategy;
+import org.springframework.security.web.RedirectStrategy;
+import org.springframework.security.web.WebAttributes;
+import org.springframework.security.web.authentication.AuthenticationSuccessHandler;
+import org.springframework.security.web.savedrequest.HttpSessionRequestCache;
+import org.springframework.security.web.savedrequest.RequestCache;
+import org.springframework.security.web.savedrequest.SavedRequest;
+import org.springframework.util.StringUtils;
+
+public class CustomAuthenticationSuccessHandler implements AuthenticationSuccessHandler {
+	
+	// RedirectStrategy은 화면을 이동하기위한 인터페이스이다.
+	private RedirectStrategy redirectStrategy = new DefaultRedirectStrategy();
+	private RequestCache requestCache = new HttpSessionRequestCache();
+	
+	private String targetUrlParameter ; 
+	private String defaultUrl ;
+	private boolean useReferer ;
+	
+	private Logger log = LoggerFactory.getLogger(this.getClass());
+	
+	// constructor
+	public CustomAuthenticationSuccessHandler(String targetUrlParameter, String defaultUrl ,boolean useReferer) {
+		this.targetUrlParameter=targetUrlParameter;
+		this.defaultUrl=defaultUrl;
+		this.useReferer = useReferer;
+		log.info(" targetUrlParameter : " , targetUrlParameter + ", defaultUrl : " + defaultUrl +", useReferer : " + useReferer );
+	}
+	
+	// getter, settger
+	public String getTargetUrlParameter() {
+		return targetUrlParameter;
+	}
+
+
+	public void setTargetUrlParameter(String targetUrlParameter) {
+		this.targetUrlParameter = targetUrlParameter;
+	}
+
+
+	public String getDefaultUrl() {
+		return defaultUrl;
+	}
+
+
+	public void setDefaultUrl(String defaultUrl) {
+		this.defaultUrl = defaultUrl;
+	}
+
+
+	public boolean isUseReferer() {
+		return useReferer;
+	}
+
+
+	public void setUseReferer(boolean useReferer) {
+		this.useReferer = useReferer;
+	}
+
+
+	@Override
+	public void onAuthenticationSuccess(HttpServletRequest request, HttpServletResponse response,
+			Authentication authentication) throws IOException, ServletException {
+		
+		clearAuthenticationAttributes(request);
+		
+		int intRedirectStrategy = decideRedirectStrategy(request,response);
+		
+		switch(intRedirectStrategy) {
+		
+		case 1: 
+			useTargetUrl(request, response);
+			break;
+		case 2: 
+			useSessionUrl(request, response);
+			break;
+		case 3: 
+			useRefererUrl(request, response);
+			break;
+		default:
+			useDefaultUrl(request, response);
+		}
+		
+	}
+	
+	/**
+	 * 
+	 * 인증 성공 후 어떤 URL로 redirect 할지를 결정한다.
+	 * 
+	 * 판단 기준은 targetUrlParameter 값을 읽은 URL이 존재할 경우 그것을 1순위
+	 * 
+	 * 1순위 URL이 없을 경우 Spring Security가 세션에 저장한 URL을 2순위
+	 * 2순위 URL이 없을 경우 Request의 REFERER를 사용하고 그 REFERER URL이 존재할 경우 그 URL을 3순위
+	 * 3순위 URL이 없을 경우 Default URL을 4순위로 한다.
+	 * 
+	 * @param request
+	 * @param response
+	 * @return 1 : targetUrlParameter 값을 읽은 URL
+	 * 		   2 : Session에 저장되어 있는 URL
+	 *  	   3 : referer 헤더에 있는 URL
+	 *  	   0 : default URL
+	 */
+	
+	private int decideRedirectStrategy(HttpServletRequest request, HttpServletResponse response) {
+		
+		int result = 0 ;
+		
+		SavedRequest savedRequest = requestCache.getRequest(request,  response);
+		
+		if ( !"".equals(targetUrlParameter) ) {
+			
+			String targetUrl = request.getParameter(targetUrlParameter);
+			
+			if(StringUtils.hasText(targetUrl)) {
+				result = 1;
+			}else {
+				if (savedRequest != null ) result=2;
+				else {
+					String refererUrl = request.getHeader("REFERER");
+					if ( useReferer && StringUtils.hasText(refererUrl)) result = 3;
+					else result = 0 ;
+				}
+			}
+			return result;
+		}
+		
+		if( savedRequest != null ) {
+			result = 2 ;
+			return result ;
+		}
+		
+		String refererUrl = request.getHeader("REFERER");
+		if(useReferer && StringUtils.hasText(refererUrl)) result =3;
+		else result = 0 ;
+		
+		return result;
+	}
+	
+	/*
+	 *  기본적으로 SpringSecurity는 로그인 실패하면 에러세션을 저장한다.
+	 *  그러나, 예를들어 로그인을 5번시도하고 성공했다고해도 그 에러세션이 저장되어 있을것이다.
+	 *  이 남아있는 에러세션을 주기위한 메서드이다.
+	 */
+	private void clearAuthenticationAttributes(HttpServletRequest request) {
+		HttpSession session = request.getSession(false);
+		
+		if ( session == null ) return;
+		
+		session.removeAttribute(WebAttributes.AUTHENTICATION_EXCEPTION); // SpringSecurity는 에러발생시 해당 key값을 사용한다.
+	}
+	
+	private void useTargetUrl(HttpServletRequest request, HttpServletResponse response) throws IOException {
+		SavedRequest savedRequest = requestCache.getRequest(request, response);
+		
+		if(savedRequest != null ) {
+			requestCache.removeRequest(request, response);
+		}
+		
+		String targetUrl = request.getParameter(targetUrlParameter);
+		redirectStrategy.sendRedirect(request, response, targetUrl);
+	}
+
+	private void useSessionUrl(HttpServletRequest request, HttpServletResponse response) throws IOException {
+		SavedRequest savedRequest = requestCache.getRequest(request, response);
+		String targetUrl = savedRequest.getRedirectUrl();
+		redirectStrategy.sendRedirect(request, response, targetUrl);
+	}
+	
+	private void useRefererUrl(HttpServletRequest request, HttpServletResponse response) throws IOException {
+		String targetUrl = request.getHeader("REFERER");
+		redirectStrategy.sendRedirect(request, response, targetUrl);
+	}
+	
+	private void useDefaultUrl(HttpServletRequest request, HttpServletResponse response) throws IOException {
+		redirectStrategy.sendRedirect(request, response, defaultUrl);
+	}
+	
+
+}
\ No newline at end of file
diff --git a/boot_gradle_security/src/main/webapp/WEB-INF/jsp/loginPage.jsp b/boot_gradle_security/src/main/webapp/WEB-INF/jsp/loginPage.jsp
index 6314217..da574ee 100644
--- a/boot_gradle_security/src/main/webapp/WEB-INF/jsp/loginPage.jsp
+++ b/boot_gradle_security/src/main/webapp/WEB-INF/jsp/loginPage.jsp
@@ -57,15 +57,15 @@
 							</div>
 							<button name="submit" type="submit" class="btn btn-block btn-primary text-light">로그인</button>
 
-							<c:if test="${not empty SPRING_SECURITY_LAST_EXCEPTION}">
+							<c:if test="${not empty securityExceptionMsg}">
+							<%--<c:if test="${not empty SPRING_SECURITY_LAST_EXCEPTION}">  --%>
 								<font color="red">
-									<p>
-										Your login attempt was not successful due to <br /> 
-										${sessionScope["SPRING_SECURITY_LAST_EXCEPTION"].message}
-									</p> 
-									<c:remove var="SPRING_SECURITY_LAST_EXCEPTION" scope="session" />
+									<p>Your login attempt was not successful, try again</p>
+									<p>${securityExceptionMsg}</p> 
+									<%--<c:remove var="SPRING_SECURITY_LAST_EXCEPTION" scope="session" />  --%>
 								</font>
 							</c:if>
+							<input type="hidden" name="loginRedirect" value="${loginRedirect}" />
 							<input type="hidden" name="${_csrf.parameterName}" value="${_csrf.token}" /> <br>
 
 							<sec:authorize access="isAuthenticated()">