There was an unexpected error (type=Not Found, status=404). No message available - spring-boot

Question

I am getting below error:
There was an unexpected error (type=Not Found, status=404). No message available
While using Spring Boot + Thymeleaf
Code:
Application class:
package com.mycom.extract;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.boot.web.support.SpringBootServletInitializer;
#SpringBootApplication(scanBasePackages = "com.mycom.extract")
public class MyAppExtractionWebApplication extends SpringBootServletInitializer {
public static void main(String[] args) {
SpringApplication.run(MyAppExtractionWebApplication.class, args);
}
#Override
protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {
return application.sources(MyAppExtractionWebApplication.class);
}
}
pom.xml
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.mycom.extract</groupId>
<artifactId>MyApp-extraction</artifactId>
<version>1</version>
<packaging>war</packaging>
<name>MyAppExtractionWeb</name>
<description>Demo project for Spring Boot</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.4.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-aop</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-integration</artifactId>
</dependency>
<dependency>
<groupId>com.jcraft</groupId>
<artifactId>jsch</artifactId>
<version>0.1.54</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-tomcat</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-security</artifactId>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
</dependency>
<dependency>
<groupId>org.thymeleaf.extras</groupId>
<artifactId>thymeleaf-extras-springsecurity4</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
SecurityConfig
package com.mycom.extract.config.security;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Configuration;
import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
import org.springframework.security.web.util.matcher.AntPathRequestMatcher;
#Configuration
#EnableWebSecurity
public class SecurityConfig extends WebSecurityConfigurerAdapter {
#Autowired
private MyAppAuthenticationProvider authProvider;
#Override
protected void configure(AuthenticationManagerBuilder auth) throws Exception {
auth.authenticationProvider(authProvider);
}
#Override
protected void configure(HttpSecurity http) throws Exception {
http.authorizeRequests()
.antMatchers("/css/**", "/login").permitAll()
.antMatchers("/*").fullyAuthenticated()
.and()
.formLogin().loginPage("/login")
.loginProcessingUrl("/j_spring_security_check")
.usernameParameter("ipn").passwordParameter("password")
.defaultSuccessUrl("/home").failureUrl("/login?error")
.and()
.logout().logoutRequestMatcher(new AntPathRequestMatcher("/logout"))
.logoutSuccessUrl("/login");
http.csrf().disable();
}
}
WebMvcConfiguration
package com.mycom.extract.config;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.ViewControllerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
#EnableAutoConfiguration
#Configuration
#ComponentScan(basePackages = { "com.mycom.extract" })
public class MyAppConfiguration extends WebMvcConfigurerAdapter{
#Override
public void addViewControllers(ViewControllerRegistry registry) {
registry.addRedirectViewController("/", "/login");
registry.addViewController("/login").setViewName("index");
registry.addViewController("/home").setViewName("home");
}
}
Referring all same kind of post in Stackoverflow could find solution for myself.
Please suggest.
URL http://localhost:8080/MyAppExtractionWeb/
As I am setting up login, and authentication is handled at security config side, so once it is successful it shows home page. Hence no controller mentioned.
package com.mycom.config.security;
import java.util.Collection;
import java.util.HashSet;
import java.util.Set;
import javax.security.auth.callback.CallbackHandler;
import javax.security.auth.login.LoginContext;
import org.springframework.beans.factory.annotation.Autowired;*/
import java.util.Collection;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Configuration;
import org.springframework.security.authentication.AuthenticationProvider;
import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.GrantedAuthority;
import com.mycom.entity.User;
import com.mycom.service.UserService;
import org.springframework.security.core.GrantedAuthority;
import org.springframework.security.core.authority.SimpleGrantedAuthority;
import org.springframework.security.core.userdetails.UserDetails;
#Configuration
public class MyAppAuthenticationProvider implements AuthenticationProvider {
private static final String SECURITY_DOMAIN = "MyApp-ldapdomain";
#Autowired
private UserService userService;
#Override
public Authentication authenticate(Authentication authentication) {
String name = authentication.getName();
String password = authentication.getCredentials().toString();
try {
CallbackHandler handler = new UserPasswordHandler(name, password);
LoginContext lc = new LoginContext(SECURITY_DOMAIN, handler);
lc.login();
if(lc.getSubject() != null) {
User user = userService.loadUserByUsername(name);
Collection<? extends GrantedAuthority> roles = null;
if(!user.getAuthorities().isEmpty()) {
roles = user.getAuthorities();
}
return new UsernamePasswordAuthenticationToken(name, password,roles);
} catch (Exception e) {
return null;
}
}
#Override
public boolean supports(Class<?> authentication) {
return authentication.equals(UsernamePasswordAuthenticationToken.class);
}
}