JAX-RS Spring JPA Hibernate Maven web application

1. Workspace directory structure

C:\workspace\FFWD_NO_EJB>tree
Folder PATH listing
Volume serial number is 1C03-D338
C:.
├───.settings
├───src
│   └───main
│       ├───java
│       │   └───com
│       │       └───persistent
│       │           ├───entity
│       │           │   └───util
│       │           ├───rest
│       │           └───service
│       ├───resources
│       │   └───META-INF
│       └───webapp
│           └───WEB-INF
└───target

2. Entity java class

package com.persistent.entity;

import java.io.Serializable;
import java.util.Date;

import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.Id;
import javax.persistence.Table;
import javax.xml.bind.annotation.XmlRootElement;


@Entity
@XmlRootElement
@Table(name="AUTH_STAT")
public class Status implements Serializable {

    @Id
    @Column(name="AUTH_STAT_CD")
    private String statusCode;

    @Column(name = "AUTH_STAT_DSC")
    private String statusDescr;

    @Column(name = "AUTH_SEREVITY_ID")
    private Integer severity;

    @Column(name = "CREATE_TS")
    private Date createTimestamp;

    @Column(name = "CREATE_USER_ID")
    private String createUserId;

    @Column(name = "UPD_USER_ID")
    private String updUserId;

    @Column(name = "UPD_TS")
    private Date updTimestamp;

3. REST service Impl (create a service interface too)

ackage com.persistent.rest;

import java.util.List;
import java.util.StringTokenizer;

import javax.ws.rs.DELETE;
import javax.ws.rs.GET;
import javax.ws.rs.POST;
import javax.ws.rs.PUT;
import javax.ws.rs.Path;
import javax.ws.rs.PathParam;
import javax.ws.rs.Produces;

import org.apache.log4j.Logger;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Scope;
import org.springframework.stereotype.Component;
import org.springframework.util.StringUtils;

import com.persistent.entity.Status;
import com.persistent.service.StatusService;

// The Java class will be hosted at the URI path "/persons"

@Component
@Path("/status")
public class StatusResourceWs implements StatusResource {
    @Autowired
    StatusService statusService;
    private Logger log = Logger.getLogger(this.getClass());
    // The Java method will process HTTP GET requests

    @GET
    @Path("{code}")
    @Produces("application/xml")
    public Status getStatus(@PathParam("code") String code) {
        log.info("Hit getStatus");
        Status status = statusService.getByCode(code);
        log.info("Sending: \n\n" + status + "\n\n");
        return status;
    }


4. JPA impl class (Crete a interface too)

package com.persistent.service;

import java.util.List;

import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
import javax.persistence.Query;

import org.apache.log4j.Logger;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Propagation;
import org.springframework.transaction.annotation.Transactional;

import com.persistent.entity.Status;
import com.persistent.service.StatusService;


@Service("statusService")
public class StatusServiceJpa implements StatusService {
    private Logger log = Logger.getLogger(this.getClass());
    private EntityManager entityManager;

    @PersistenceContext
    public void setEntityManager(EntityManager entityManager) {
        this.entityManager = entityManager;
    }

    /* (non-Javadoc)
     * @see com.persistent.service.jpa.StatusService#getById(int)
     */
    @Transactional(readOnly = true)
    public Status getByCode(String code) {
        return entityManager.find(Status.class, code);
    }
}



5. Persistence.xml definition in META-INF directory of war file

<persistence xmlns="http://java.sun.com/xml/ns/persistence"

        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
        xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd"
        version="1.0">

    <persistence-unit name="status_persistence" transaction-type="RESOURCE_LOCAL">
        <class>com.persistent.entity.Status</class>
    </persistence-unit>

</persistence>


6. Spring application context file contents - goes into WEB-INF/classes

<?xml version="1.0" encoding="UTF-8"?>

<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p"
    xmlns:aop="http://www.springframework.org/schema/aop" xmlns:context="http://www.springframework.org/schema/context"
    xmlns:jee="http://www.springframework.org/schema/jee" xmlns:tx="http://www.springframework.org/schema/tx"
    xmlns:util="http://www.springframework.org/schema/util"
    xsi:schemaLocation="
            http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd
            http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
            http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-2.5.xsd
            http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-2.5.xsd
            http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd
            http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-2.5.xsd
            ">
    <!--  Scan for both Jersey Rest Annotations a -->
    <context:component-scan
        base-package="com.persistent.rest,com.persistent.service,com.persistence.entity" />
    <context:annotation-config />
   
    <tx:annotation-driven />
   
    <jee:jndi-lookup id="dataSource" jndi-name="jdbc/BPPSDataSource" expected-type="javax.sql.DataSource"/>
   
    <bean id="entityManagerFactory"
        class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean"
        p:dataSource-ref="dataSource" p:jpaVendorAdapter-ref="jpaAdapter">
        <property name="persistenceUnitName" value="status_persistence" />
        <property name="jpaProperties">
            <value>
                  hibernate.query.factory_class=org.hibernate.hql.classic.ClassicQueryTranslatorFactory
                hibernate.dialect" value="org.hibernate.dialect.Oracle10gDialect
                hibernate.connection.driver_class=oracle.jdbc.driver.OracleDriver
                  hibernate.show_sql=true
                hibernate.default_schema=BFPS
            </value>
        </property>
    </bean>
   
    <bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager"
        p:entityManagerFactory-ref="entityManagerFactory" />
   
    <bean id="jpaAdapter"
        class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter"
        p:database="ORACLE" p:showSql="true" />
</beans>



7. web.xml definition

<?xml version="1.0" encoding="UTF-8"?>

<web-app version="2.4"
xmlns="http://java.sun.com/xml/ns/j2ee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
<context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:applicationContext.xml</param-value>
    </context-param>
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>
    <listener>
        <listener-class>org.springframework.web.context.request.RequestContextListener</listener-class>
    </listener>
    <servlet>
        <servlet-name>Jersey Spring Web Application</servlet-name>
        <servlet-class>com.sun.jersey.spi.spring.container.servlet.SpringServlet</servlet-class>
    </servlet>
    <servlet-mapping>
        <servlet-name>Jersey Spring Web Application</servlet-name>
        <url-pattern>/rest/*</url-pattern>
    </servlet-mapping>
</web-app>



8. Maven 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/maven-v4_0_0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.persistent</groupId>
    <artifactId>FFWD_NO_EJB</artifactId>
    <packaging>war</packaging>
    <version>1.0-SNAPSHOT</version>
    <name>FFWD_NO_EJB</name>
    <repositories>
        <repository>
            <id>maven2-repository.dev.java.net</id>
            <name>Java.net Maven 2 Repository</name>
            <url>http://download.java.net/maven/2/</url>
            <!-- <layout>default</layout> -->
        </repository>
        <repository>
            <id>maven-repository.dev.java.net</id>
            <name>Java.net Maven 1 Repository (legacy)</name>
            <url>http://download.java.net/maven/1</url>
            <layout>legacy</layout>
        </repository>
    </repositories>
    <build>
        <finalName>FFWD_NO_EJB</finalName>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <inherited>true</inherited>
                <configuration>
                    <source>1.5</source>
                    <target>1.5</target>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.mortbay.jetty</groupId>
                <artifactId>maven-jetty-plugin</artifactId>
                <version>6.1.10</version>
            </plugin>
        </plugins>
    </build>
    <properties>
        <spring.version>2.5.5</spring.version>
        <hibernate.version>3.3.2.GA</hibernate.version>
        <commons-dbcp.version>1.2.2</commons-dbcp.version>
        <commons-logging.version>1.0.4</commons-logging.version>
        <jersey-version>1.0.2</jersey-version>
        <log4j.version>1.2.13</log4j.version>
    </properties>
    <dependencies>
        <!-- Adding in JPA With It's Requirements -->
        <dependency>
            <groupId>commons-logging</groupId>
            <artifactId>commons-logging</artifactId>
            <version>${commons-logging.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-test</artifactId>
            <version>${spring.version}</version>
            <scope>compile</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring</artifactId>
            <version>${spring.version}</version>
            <scope>compile</scope>
        </dependency>
        <dependency>
            <groupId>javax.persistence</groupId>
            <artifactId>persistence-api</artifactId>
            <version>1.0</version>
        </dependency>
        <dependency>
            <groupId>commons-dbcp</groupId>
            <artifactId>commons-dbcp</artifactId>
            <version>${commons-dbcp.version}</version>
            <scope>runtime</scope>
        </dependency>
        <!--Explicitly add -->
        <!-- change cglib-nodep Farrukh Najmi From net.java.dev.jersey.users Dec.
            10, 2007 -->
        <dependency>
            <groupId>cglib</groupId>
            <artifactId>cglib-nodep</artifactId>
            <version>2.1_3</version>
        </dependency>
        <dependency>
            <groupId>geronimo-spec</groupId>
            <artifactId>geronimo-spec-jta</artifactId>
            <version>1.0.1B-rc4</version>
        </dependency>
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-entitymanager</artifactId>
            <version>${hibernate.version}</version>
           
            <!-- <artifactId>hibernate</artifactId> <version>3.2.5.ga</version> Explicitly
                remove: See: http://blog.interface21.com/main/2007/06/11/asm-version-incompatibilities-using-spring-autowired-with-hibernate/ -->
            <exclusions>
           
                <exclusion>
                    <groupId>javax.transaction</groupId>
                    <artifactId>jta</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>asm</groupId>
                    <artifactId>asm</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>asm</groupId>
                    <artifactId>asm-attrs</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>cglib</groupId>
                    <artifactId>cglib</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
        <!-- JPA Additions end. -->
        <dependency>
            <groupId>com.sun.jersey</groupId>
            <artifactId>jersey-server</artifactId>
            <version>${jersey-version}</version>
        </dependency>
        <dependency>
            <groupId>com.sun.jersey.contribs</groupId>
            <artifactId>jersey-spring</artifactId>
            <version>${jersey-version}</version>
        </dependency>
        <dependency>
            <groupId>log4j</groupId>
            <artifactId>log4j</artifactId>
            <version>${log4j.version}</version>
        </dependency>
    </dependencies>
</project>



9. Access REST url at http://localhost:7001/FFWD/rest/status/S