Ehcache With CXF Web Service
Create a Service Interface
This service interface will defines which methods of restful service, to be invoked by the client
Here we implement the service interface created on the previous step
package com.student;
import javax.ws.rs.Consumes;
import javax.ws.rs.POST;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import org.springframework.cache.annotation.Cacheable;
@Consumes("application/json")
@Produces("application/json")
public class ChangeStudentDetailsImpl{
@Cacheable(value="student", key="#student.name")
@POST
@Path("/changeName")
public Student changeName(Student student) {
System.out.println("Inside changeName method");
student.setName("HELLO " + student.getName());
return student;
}
}
import javax.ws.rs.Consumes;
import javax.ws.rs.POST;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import org.springframework.cache.annotation.Cacheable;
@Consumes("application/json")
@Produces("application/json")
public class ChangeStudentDetailsImpl{
@Cacheable(value="student", key="#student.name")
@POST
@Path("/changeName")
public Student changeName(Student student) {
System.out.println("Inside changeName method");
student.setName("HELLO " + student.getName());
return student;
}
}
Create a cxf.xml
You need to add
<cache:annotation-driven />
for working on annotations and also need to specify which cacheManager we are using
<beans xmlns="http://www.springframework.org/schema/beans" xmlns:cache="http://www.springframework.org/schema/cache" xmlns:cxf="http://cxf.apache.org/core" xmlns:jaxrs="http://cxf.apache.org/jaxrs" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p" xsi:schemaLocation="http://cxf.apache.org/core http://cxf.apache.org/schemas/core.xsd http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://cxf.apache.org/jaxrs http://cxf.apache.org/schemas/jaxrs.xsd http://www.springframework.org/schema/cache http://www.springframework.org/schema/cache/spring-cache.xsd"> <import resource="classpath:META-INF/cxf/cxf.xml" /> <cache:annotation-driven /> <cxf:bus> <cxf:features> <cxf:logging /> </cxf:features> </cxf:bus> <jaxrs:server address="/rest" id="base"> <jaxrs:serviceBeans> <ref bean="StudentService" /> </jaxrs:serviceBeans> </jaxrs:server> <bean class="com.student.ChangeStudentDetailsImpl" id="StudentService" /> <!-- Ehcache library setup --> <bean class="org.springframework.cache.ehcache.EhCacheCacheManager" id="cacheManager" p:cache-manager-ref="ehcache" /> <bean class="org.springframework.cache.ehcache.EhCacheManagerFactoryBean" id="ehcache" p:config-location="WEB-INF/ehcache.xml" /> </beans>
Create a ehcache.xml
We are spacifying cache configurations on ehcache.xml
<ehcache> <diskStore path="java.io.tmpdir" /> <cache name="student" maxElementsInMemory="100" eternal="false" timeToIdleSeconds="120" timeToLiveSeconds="120" overflowToDisk="true" maxElementsOnDisk="10000000" diskPersistent="false" diskExpiryThreadIntervalSeconds="120" memoryStoreEvictionPolicy="LRU" /> </ehcache>
Change web.xml
Change the web.xml file to find CXF servlet and cxf.xml
<web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemalocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"> <context-param> <param-name>contextConfigLocation</param-name> <param-value>WEB-INF/cxf.xml</param-value> </context-param> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <servlet> <servlet-name>CXFServlet</servlet-name> <servlet-class>org.apache.cxf.transport.servlet.CXFServlet</servlet-class> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>CXFServlet</servlet-name> <url-pattern>/*</url-pattern> </servlet-mapping> </web-app>
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