Spring MVC application without web.xml deployed in tomcat gives 404 Error - spring

Question

I have developed an application in Spring MVC and it is working fine when I directly run it from eclipse by Run as -> Run On Server.
But now I want to deploy the war to Tomcat folder and run it from there. I have done changes for that and war is getting deployed correctly to the desired tomcat folder but when I start tomcat server and access app url in browser it is giving me 404 error. Server is starting without any exceptions.
Below is the project structure and files :
Project Structure ->
pom.xml ->
<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>DesertLamp</groupId>
<artifactId>DesertLamp</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>war</packaging>
<dependencies>
<!-- Spring -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>4.2.6.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>4.2.6.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>4.2.6.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>4.2.6.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-orm</artifactId>
<version>4.2.6.RELEASE</version>
</dependency>
<!-- Spring Security -->
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-web</artifactId>
<version>4.1.0.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-config</artifactId>
<version>4.1.0.RELEASE</version>
</dependency>
<!-- Spring Data JPA -->
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-jpa</artifactId>
<version>1.10.1.RELEASE</version>
</dependency>
<!-- Hibernate -->
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-core</artifactId>
<version>5.1.0.Final</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-validator</artifactId>
<version>5.2.4.Final</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-entitymanager</artifactId>
<version>5.1.0.Final</version>
</dependency>
<!-- Servlet -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.1.0</version>
</dependency>
<dependency>
<groupId>javax.servlet.jsp</groupId>
<artifactId>javax.servlet.jsp-api</artifactId>
<version>2.3.1</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
<dependency>
<groupId>javax.transaction</groupId>
<artifactId>jta</artifactId>
<version>1.1</version>
</dependency>
<!-- MySQL -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.37</version>
</dependency>
<!-- Commons Dependencies -->
<dependency>
<groupId>commons-dbcp</groupId>
<artifactId>commons-dbcp</artifactId>
<version>1.4</version>
</dependency>
<dependency>
<groupId>commons-fileupload</groupId>
<artifactId>commons-fileupload</artifactId>
<version>1.3.1</version>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
<version>3.3.2</version>
</dependency>
<dependency>
<groupId>commons-logging</groupId>
<artifactId>commons-logging</artifactId>
<version>1.1.1</version>
</dependency>
</dependencies>
<build>
<sourceDirectory>src</sourceDirectory>
<plugins>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.1</version>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
<plugin>
<artifactId>maven-war-plugin</artifactId>
<version>2.3</version>
<configuration>
<warSourceDirectory>WebContent</warSourceDirectory>
<failOnMissingWebXml>false</failOnMissingWebXml>
<outputDirectory>C:\apache-tomcat-7.0.76\webapps</outputDirectory>
</configuration>
</plugin>
</plugins>
</build>
</project>
DesertLampWebApplicationConfig.java ->
#Configuration
#EnableWebMvc
#EnableJpaRepositories(basePackages = "co.in.desertlamp")
#ComponentScan(basePackages = "co.in.desertlamp")
#Import(value = { DesertLampSecurityConfiguration.class })
public class DesertLampWebApplicationConfig extends WebMvcConfigurerAdapter {
#Bean
public InternalResourceViewResolver viewResolver() {
InternalResourceViewResolver viewResolver = new InternalResourceViewResolver();
viewResolver.setViewClass(JstlView.class);
viewResolver.setPrefix("/WEB-INF/views/");
viewResolver.setSuffix(".jsp");
return viewResolver;
}
}
DesertLampInitializer.java
public class DesertLampInitializer extends AbstractAnnotationConfigDispatcherServletInitializer {
#Override
protected Class<?>[] getRootConfigClasses() {
return new Class[] { DesertLampWebApplicationConfig.class };
}
#Override
protected Class<?>[] getServletConfigClasses() {
return null;
}
#Override
protected String[] getServletMappings() {
return new String[] { "/" };
}
}
DesertLampApplicationConfig.java
#Configuration
#EnableTransactionManagement
#EnableJpaRepositories(basePackages = "co.in.desertlamp")
#ComponentScan({ "co.in.desertlamp" })
#PropertySource(value = { "classpath:/co/in/desertlamp/resources/desertlamp.properties" })
public class DesertLampApplicationConfig {
private static final String DATABASE_DRIVER = "db.driver";
private static final String DATABASE_URL = "db.url";
private static final String DATABASE_USERNAME = "db.username";
private static final String DATABASE_PASSWORD = "db.password";
private static final String HIBERNATE_DIALECT = "hibernate.dialect";
private static final String HIBERNATE_SHOWSQL = "hibernate.show_sql";
private static final String HIBERNATE_FORMATSQL = "hibernate.format_sql";
private static final String HIBERNATE_HBM2DDL = "hibernate.hbm2ddl.auto";
#Resource
private Environment environment;
#Bean
public LocalSessionFactoryBean sessionFactory() {
LocalSessionFactoryBean sessionFactory = new LocalSessionFactoryBean();
sessionFactory.setDataSource(dataSource());
sessionFactory.setPackagesToScan(new String[] { "co.in.desertlamp" });
sessionFactory.setHibernateProperties(hibernateProperties());
return sessionFactory;
}
#Bean
public DataSource dataSource() {
DriverManagerDataSource dataSource = new DriverManagerDataSource();
dataSource.setDriverClassName(environment.getRequiredProperty(DATABASE_DRIVER));
dataSource.setUrl(environment.getRequiredProperty(DATABASE_URL));
dataSource.setUsername(environment.getRequiredProperty(DATABASE_USERNAME));
dataSource.setPassword(environment.getRequiredProperty(DATABASE_PASSWORD));
return dataSource;
}
#Bean
#Conditional(DataSourceCondition.class)
public DataSourceInitializer dataSourceInitializer(DataSource dataSource) {
ResourceDatabasePopulator resourceDatabasePopulator = new ResourceDatabasePopulator();
//Put Logger here
resourceDatabasePopulator.addScript(new ClassPathResource("/co/in/desertlamp/scripts/loadUserAndRoleData.sql"));
DataSourceInitializer dataSourceInitializer = new DataSourceInitializer();
dataSourceInitializer.setDataSource(dataSource);
dataSourceInitializer.setDatabasePopulator(resourceDatabasePopulator);
return dataSourceInitializer;
}
private Properties hibernateProperties() {
Properties hibernateProperties = new Properties();
hibernateProperties.put(HIBERNATE_DIALECT, environment.getRequiredProperty(HIBERNATE_DIALECT));
hibernateProperties.put(HIBERNATE_SHOWSQL, environment.getRequiredProperty(HIBERNATE_SHOWSQL));
hibernateProperties.put(HIBERNATE_FORMATSQL, environment.getRequiredProperty(HIBERNATE_FORMATSQL));
hibernateProperties.put(HIBERNATE_HBM2DDL, environment.getRequiredProperty(HIBERNATE_HBM2DDL));
return hibernateProperties;
}
#Bean(name = "entityManagerFactory")
public LocalContainerEntityManagerFactoryBean entityManagerFactory() {
LocalContainerEntityManagerFactoryBean entityManagerFactoryBean = new LocalContainerEntityManagerFactoryBean();
entityManagerFactoryBean.setDataSource(dataSource());
entityManagerFactoryBean.setPackagesToScan(new String[] { "co.in.desertlamp" });
JpaVendorAdapter vendorAdapter = new HibernateJpaVendorAdapter();
entityManagerFactoryBean.setJpaVendorAdapter(vendorAdapter);
entityManagerFactoryBean.setJpaProperties(hibernateProperties());
return entityManagerFactoryBean;
}
#Bean
public PlatformTransactionManager transactionManager(
EntityManagerFactory entityManagerFactory) {
JpaTransactionManager transactionManager = new JpaTransactionManager();
transactionManager.setEntityManagerFactory(entityManagerFactory);
return transactionManager;
}
}
-> server.xml
<?xml version='1.0' encoding='utf-8'?>
<!--
Licensed to the Apache Software Foundation (ASF) under one or more
contributor license agreements. See the NOTICE file distributed with
this work for additional information regarding copyright ownership.
The ASF licenses this file to You under the Apache License, Version 2.0
(the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
-->
<!-- Note: A "Server" is not itself a "Container", so you may not
define subcomponents such as "Valves" at this level.
Documentation at /docs/config/server.html
-->
<Server port="8005" shutdown="SHUTDOWN">
<Listener className="org.apache.catalina.startup.VersionLoggerListener" />
<!-- Security listener. Documentation at /docs/config/listeners.html
<Listener className="org.apache.catalina.security.SecurityListener" />
-->
<!--APR library loader. Documentation at /docs/apr.html -->
<Listener className="org.apache.catalina.core.AprLifecycleListener" SSLEngine="on" />
<!--Initialize Jasper prior to webapps are loaded. Documentation at /docs/jasper-howto.html -->
<Listener className="org.apache.catalina.core.JasperListener" />
<!-- Prevent memory leaks due to use of particular java/javax APIs-->
<Listener className="org.apache.catalina.core.JreMemoryLeakPreventionListener" />
<Listener className="org.apache.catalina.mbeans.GlobalResourcesLifecycleListener" />
<Listener className="org.apache.catalina.core.ThreadLocalLeakPreventionListener" />
<!-- Global JNDI resources
Documentation at /docs/jndi-resources-howto.html
-->
<GlobalNamingResources>
<!-- Editable user database that can also be used by
UserDatabaseRealm to authenticate users
-->
<Resource name="UserDatabase" auth="Container"
type="org.apache.catalina.UserDatabase"
description="User database that can be updated and saved"
factory="org.apache.catalina.users.MemoryUserDatabaseFactory"
pathname="conf/tomcat-users.xml" />
</GlobalNamingResources>
<!-- A "Service" is a collection of one or more "Connectors" that share
a single "Container" Note: A "Service" is not itself a "Container",
so you may not define subcomponents such as "Valves" at this level.
Documentation at /docs/config/service.html
-->
<Service name="Catalina">
<!--The connectors can use a shared executor, you can define one or more named thread pools-->
<!--
<Executor name="tomcatThreadPool" namePrefix="catalina-exec-"
maxThreads="150" minSpareThreads="4"/>
-->
<!-- A "Connector" represents an endpoint by which requests are received
and responses are returned. Documentation at :
Java HTTP Connector: /docs/config/http.html (blocking & non-blocking)
Java AJP Connector: /docs/config/ajp.html
APR (HTTP/AJP) Connector: /docs/apr.html
Define a non-SSL HTTP/1.1 Connector on port 8080
-->
<Connector port="8080" protocol="HTTP/1.1"
connectionTimeout="20000"
redirectPort="8443" />
<!-- A "Connector" using the shared thread pool-->
<!--
<Connector executor="tomcatThreadPool"
port="8080" protocol="HTTP/1.1"
connectionTimeout="20000"
redirectPort="8443" />
-->
<!-- Define a SSL HTTP/1.1 Connector on port 8443
This connector uses the BIO implementation that requires the JSSE
style configuration. When using the APR/native implementation, the
OpenSSL style configuration is required as described in the APR/native
documentation -->
<!--
<Connector port="8443" protocol="org.apache.coyote.http11.Http11Protocol"
maxThreads="150" SSLEnabled="true" scheme="https" secure="true"
clientAuth="false" sslProtocol="TLS" />
-->
<!-- Define an AJP 1.3 Connector on port 8009 -->
<Connector port="8009" protocol="AJP/1.3" redirectPort="8443" />
<!-- An Engine represents the entry point (within Catalina) that processes
every request. The Engine implementation for Tomcat stand alone
analyzes the HTTP headers included with the request, and passes them
on to the appropriate Host (virtual host).
Documentation at /docs/config/engine.html -->
<!-- You should set jvmRoute to support load-balancing via AJP ie :
<Engine name="Catalina" defaultHost="localhost" jvmRoute="jvm1">
-->
<Engine name="Catalina" defaultHost="localhost">
<!--For clustering, please take a look at documentation at:
/docs/cluster-howto.html (simple how to)
/docs/config/cluster.html (reference documentation) -->
<!--
<Cluster className="org.apache.catalina.ha.tcp.SimpleTcpCluster"/>
-->
<!-- Use the LockOutRealm to prevent attempts to guess user passwords
via a brute-force attack -->
<Realm className="org.apache.catalina.realm.LockOutRealm">
<!-- This Realm uses the UserDatabase configured in the global JNDI
resources under the key "UserDatabase". Any edits
that are performed against this UserDatabase are immediately
available for use by the Realm. -->
<Realm className="org.apache.catalina.realm.UserDatabaseRealm"
resourceName="UserDatabase"/>
</Realm>
<Host name="localhost" appBase="webapps"
unpackWARs="true" autoDeploy="true">
<!-- SingleSignOn valve, share authentication between web applications
Documentation at: /docs/config/valve.html -->
<!--
<Valve className="org.apache.catalina.authenticator.SingleSignOn" />
-->
<!-- Access log processes all example.
Documentation at: /docs/config/valve.html
Note: The pattern used is equivalent to using pattern="common" -->
<Valve className="org.apache.catalina.valves.AccessLogValve" directory="logs"
prefix="localhost_access_log." suffix=".txt"
pattern="%h %l %u %t "%r" %s %b" />
</Host>
</Engine>
</Service>
</Server>
-> Web Content Structure
-> DefaultController.java
#Controller
public class DefaultController {
#Autowired
private UserService userService;
#RequestMapping(value = { "/", "/home" }, method = RequestMethod.GET)
public ModelAndView defaultPage() {
ModelAndView model = new ModelAndView();
model.setViewName("common/pgDefault");
return model;
}
#RequestMapping(value = "/login", method = RequestMethod.GET)
public ModelAndView loginPage(#RequestParam(value = "error",required = false) String error,
#RequestParam(value = "logout", required = false) String logout) {
ModelAndView model = new ModelAndView();
if (error != null) {
model.addObject("error", "Invalid Email OR Password");
}
if (logout != null) {
model.addObject("message", "You are successfully logged out");
}
model.setViewName("common/pgLogin");
return model;
}
#RequestMapping(value="/welcome", method = RequestMethod.GET)
public String welcomePage(ModelMap model){
String userEmailID = DesertLampUtils.getPrincipal();
User user = userService.findByEmail(userEmailID);
String userFirstName = user.getFirstName();
model.addAttribute("userFirstName",userFirstName);
return "common/pgWelcome";
}
#RequestMapping(value = "/Access_Denied", method = RequestMethod.GET)
public ModelAndView accessDeniedPage(Principal principal) {
ModelAndView model = new ModelAndView();
String currentUser = DesertLampUtils.getPrincipal();
model.addObject("currentUser", currentUser);
model.setViewName("common/pgAccessDenied");
return model;
}
}
The url I am requesting is http://localhost:8080/DesertLamp-0.0.1-SNAPSHOT/.
Thanks in advance.

Answer 1

After testing the code, I noticed that the reason why you are getting 404 is because your application doesn't start correctly due to the reason that the sql and properties file are not found.
In your code, the sql and properties files are placed with the java code. When maven compiles the java code, the sql and properties files are ignored because they are not java file. Therefore, they didn’t make their way to the class folder, and as a result. You are not able to access them during runtime.
In maven, there are three main folders. src/main/java. src/main/resources, src/test/java. java code should go to the first one, test should go to the last one and resources should go to the second one. Therefore, your properties, sql files should be placed in the src/main/resource folder. During compiling, everything in the src/main/resource folder will be put into WEB-INF/classes/ folder. So, you will be accessing them under the path: classpath: xxxx.properties.