Spring+Hibernate- Getting 404 exception

Question

I am new to Spring and Hibernate and I would like to create Restful Web services using these technologies.

I am getting 404 exception when calling the URL http://localhost:8080/RakeshMavenProject/book.

I have created controller,service,Dao classes and mentioned the configuration parameters in AppConfig.java

@Configuration
@EnableTransactionManagement
@ComponentScans(value = {@ComponentScan("com.example.ws.maven_web_service_project.service"),
        @ComponentScan("com.example.ws.maven_web_service_project.dao")})
public class AppConfig { 
       @Bean
       public LocalSessionFactoryBean sessionFactoryBean(){
        LocalSessionFactoryBean sessionFactoryBean = new LocalSessionFactoryBean();
        sessionFactoryBean.setDataSource(dataSource());
        sessionFactoryBean.setPackagesToScan(new String[] { "com.example.ws.maven_web_service_project.model" });
        sessionFactoryBean.setHibernateProperties(hibernateProperties());
         return sessionFactoryBean;
       }

       @Bean
       public DataSource dataSource(){
        DriverManagerDataSource ds = new DriverManagerDataSource();
        ds.setDriverClassName("com.mysql.jdbc.Driver");
        ds.setUrl("jdbc:mysql://localhost:3306/hibernate_test");
        ds.setUsername("root");
        ds.setPassword("root");
        return ds;
       }

       private Properties hibernateProperties(){
        Properties props = new Properties();
        props.put("hibernate.dialect", "org.hibernate.dialect.MySQLDialect");
        props.put("hibernate.show_sql", "true");
         props.put("hibernate.hbm2ddl.auto", "update");

          // Setting C3P0 properties
          props.put("hibernate.c3p0.min_size", 5);
          props.put("hibernate.c3p0.max_size", 20);
          props.put("hibernate.c3p0.acquire_increment", 
                1);
          props.put("hibernate.c3p0.timeout", 1800);
          props.put("hibernate.c3p0.max_statements", 150);

          return props;
       }

       @Bean
       @Autowired
       public HibernateTransactionManager transactionManager(SessionFactory s){
        HibernateTransactionManager txManager = new HibernateTransactionManager();
        txManager.setSessionFactory(s);
        return txManager;
       }
}

The code of 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 SSLEngine="on" className="org.apache.catalina.core.AprLifecycleListener"/>
  <!-- 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 auth="Container" description="User database that can be updated and saved" factory="org.apache.catalina.users.MemoryUserDatabaseFactory" name="UserDatabase" pathname="conf/tomcat-users.xml" type="org.apache.catalina.UserDatabase"/>
  </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
         Java AJP  Connector: /docs/config/ajp.html
         APR (HTTP/AJP) Connector: /docs/apr.html
         Define a non-SSL/TLS HTTP/1.1 Connector on port 8080
    -->
    <Connector connectionTimeout="20000" port="8080" protocol="HTTP/1.1" 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/TLS HTTP/1.1 Connector on port 8443
         This connector uses the NIO implementation. The default
         SSLImplementation will depend on the presence of the APR/native
         library and the useOpenSSL attribute of the
         AprLifecycleListener.
         Either JSSE or OpenSSL style configuration may be used regardless of
         the SSLImplementation selected. JSSE style configuration is used below.
    -->
    <!--
    <Connector port="8443" protocol="org.apache.coyote.http11.Http11NioProtocol"
               maxThreads="150" SSLEnabled="true">
        <SSLHostConfig>
            <Certificate certificateKeystoreFile="conf/localhost-rsa.jks"
                         type="RSA" />
        </SSLHostConfig>
    </Connector>
    -->
    <!-- Define a SSL/TLS HTTP/1.1 Connector on port 8443 with HTTP/2
         This connector uses the APR/native implementation which always uses
         OpenSSL for TLS.
         Either JSSE or OpenSSL style configuration may be used. OpenSSL style
         configuration is used below.
    -->
    <!--
    <Connector port="8443" protocol="org.apache.coyote.http11.Http11AprProtocol"
               maxThreads="150" SSLEnabled="true" >
        <UpgradeProtocol className="org.apache.coyote.http2.Http2Protocol" />
        <SSLHostConfig>
            <Certificate certificateKeyFile="conf/localhost-rsa-key.pem"
                         certificateFile="conf/localhost-rsa-cert.pem"
                         certificateChainFile="conf/localhost-rsa-chain.pem"
                         type="RSA" />
        </SSLHostConfig>
    </Connector>
    -->

    <!-- 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 defaultHost="localhost" name="Catalina">

      <!--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 appBase="webapps" autoDeploy="true" name="localhost" unpackWARs="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" pattern="%h %l %u %t &quot;%r&quot; %s %b" prefix="localhost_access_log" suffix=".txt"/>

      <Context docBase="RakeshMavenProject" path="/RakeshMavenProject" reloadable="true" source="org.eclipse.jst.jee.server:RakeshMavenProject"/></Host>
    </Engine>
  </Service>
</Server>

Update : I am mentioning the code of my controller class

@RestController
public class BookController {

@Autowired
private BookService bookService;

    //@PostMapping("/book")
@RequestMapping(value="/book/", method= RequestMethod.POST,headers="Accept=application/json")
    public @ResponseBody ResponseEntity<?> saveBook(@RequestBody Book book){
        int bookId = bookService.saveBook(book);
        return ResponseEntity.ok().body("Your Book with Id "+ bookId +" save successfully.");
    }


  // @GetMapping("/book/{id}")

@RequestMapping(value="/book/{id}", method= RequestMethod.GET,headers="Accept=application/json")
    public @ResponseBody ResponseEntity<Book> getBook(@PathVariable("id") int bookId){
        Book book = bookService.getBook(bookId);
        return ResponseEntity.ok().body(book);
    }



  @RequestMapping(value="/book/", method= RequestMethod.GET,headers="Accept=application/json")
   public @ResponseBody ResponseEntity<List<Book>> list() {
      List<Book> books = bookService.listBooks();
      return ResponseEntity.ok().body(books);
   }

}

Please anyone help me to find the solution.

Answer 1

You need to specify mapping either at controller level @RestContoller('myController') or at each method level like @RequestMapping(value="myController/book/", method= RequestMethod.POST,headers="Accept=application/json")

The your url will be http://localhost:8080/RakeshMavenProject/myController/book.

Answer 2

Your request mapping has a typo. try using @RequestMapping(value="/book") or access your app using http://localhost:8080/RakeshMavenProject/book/

It should work fine if there are no further error.