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SOAP Web Service Tutorial with Apache CXF, Maven, and Eclipse

This is an extension RESTful service with Apache CXF . This tutorial modifies the same one for SOAP based Web Service. 1) You have set up you Java, Maven, and Eclipsr 2) You have set up your Tomcat Server 3) You Have gone through the Simple Web tutorial 4) You...

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Splunk to analyse Java logs and other machine data

Q1. What is Splunk and where will you use it?
A1. Splunk is an enterprise-grade software tool for collecting and analyzing “machine data” like log files, feed files, and other big data in terra bytes. You can upload logs from your websites and let Splunk index them,

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Spring 3.0 tutorial – Part 1 (Setter DI )

This is a very simple Spring setter DI (depenendency injection tutorial). This assumes that you have gone through the “Setting up Java, Maven and Eclipse” tutorial. To recap:

1) Java, Maven, and eclipse are set up.
2) You have run the Maven archetype:generate command to create a skeleton structure.

…

Spring 3.0 tutorial – Part 2 (Constructor DI )

This is a very simple Spring constructor DI (depenendency injection tutorial). This assumes that you have gone through the “Setting up Java, Maven and Eclipse” tutorial. To recap: 1) Java, Maven, and eclipse are set up. 2) You have run the Maven archetype:generate command to create a skeleton structure. …...

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Spring 3.0 tutorial – part 3 (Setter DI with annotations)

This is a very simple Spring setter DI (dependency injection tutorial) using annotations. This assumes that you have gone through the “Setting up Java, Maven and Eclipse” tutorial. To recap:

1) Java, Maven, and eclipse are set up.
2) You have run the Maven archetype:generate command to create a skeleton structure.

…

Spring 3.0 tutorial – part 4 (Setter DI with annotations and Java Config instead of XML)

This is a very simple Spring setter DI (dependency injection tutorial) using annotations. This is using a Java based Spring configuration with @configuration annotation as opposed to an XML based file. This assumes that you have gone through the “Setting up Java, Maven and Eclipse” … Read more ›...

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Spring 3.0 tutorial – part 5 (Setter DI with Spring AOP and AspectJ)

This is a very simple Spring AOP tutorial using AspectJ. This assumes that you have gone through the “Setting up Java, Maven and Eclipse” tutorial and the other Spring tutorials 1 to 3. This annotation profiles the time taken to execute the annotated methods.

You need to have a project structure as shown below with the relevant artifacts.

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Spring 3.0 tutorial – part 6 (with Hibernate & HSQLDB)

This is a very simple Spring tutorial with Hibernate and HSQLDB. This assumes that you have gone through the tutorials

1) Setting up Java, Maven, and Eclipse
2) The “Course” table is created as per the tutorials “SQL Tutorial with HSQLDB” and “JDBC Tutorial with HSQLDB”
3) Spring 3.0 tutorial part 1 to part 3.

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Spring 3.0 tutorial – part 7 (with JPA, Hibernate & HSQLDB)

This is a very simple Spring tutorial with JPA, Hibernate and HSQLDB. This assumes that you have gone through the tutorials 1) Setting up Java, Maven, and Eclipse 2) The “Course” table is created as per the tutorials “SQL Tutorial with HSQLDB” and “JDBC Tutorial with HSQLDB” … Read more...

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Spring batch industrial strength tutorial – part1

Make sure that you do this first Beginner Spring batch tutorial with simple reader and writer. Q. What do you understand by batch processing and why do you need them? A. The idea behind batch processing is to allow a program to run without the need for human intervention, …...

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Spring boot with Spring MVC, JPA, Hibernate & MySQL tutorial in 10 steps

This assumes that you that you have set up Java, Maven, and MySQL as per the previous tutorials.

Spring boot dependencies in pom.xml

The entries for the Spring boot pom.xml can be determined via “https://start.spring.io/“. If it is a new project, create a zip file and import into eclipse.

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Spring IO tutorial in 6 steps

Spring IO Platform is all about “list of dependencies and their versions that work well together”. It is implemented as a Maven POM file via Maven Bill-of-Materials dependency that you can import into your projects to set the versions for dependencies. You can go to “ … Read more ›...

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Spring loading properties files with ApplicationContextInitializer

Spring 3.1 introduced a very convenient hook for customizing the application context with ApplicationContextInitializer. It can be used to set active profiles and register custom property sources.

package com.mytutorial.configuration;

import static org.springframework.core.env.StandardEnvironment.SYSTEM_ENVIRONMENT_PROPERTY_SOURCE_NAME;

import java.io.IOException;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.context.ApplicationContextInitializer;
import org.springframework.context.ConfigurableApplicationContext;
import org.springframework.core.env.ConfigurableEnvironment;
import org.springframework.core.env.MutablePropertySources;
import org.springframework.core.env.PropertySource;
import org.springframework.core.io.ClassPathResource;
import org.springframework.core.io.Resource;
import org.springframework.core.io.support.ResourcePropertySource;

public class MyAppApplicationContextInitializer implements ApplicationContextInitializer<ConfigurableApplicationContext> {

    public static final String DEFAULT_APPLICATION_PROPERTIES = "myapp-service.properties";

    private static final Logger LOG = LoggerFactory.getLogger(MyAppApplicationContextInitializer.class);

   
    @Override
    public void initialize(final ConfigurableApplicationContext applicationContext) {
        final ConfigurableEnvironment environment = applicationContext.getEnvironment();
        final MutablePropertySources propertySources = environment.getPropertySources();
        propertySources.addAfter(SYSTEM_ENVIRONMENT_PROPERTY_SOURCE_NAME, getApplicationProperties(environment));
    }

    /**
     * Loads application properties from the configured resource location.
     */
    protected PropertySource<?> getApplicationProperties(final ConfigurableEnvironment environment) {
        try {
            final Resource propertiesResource = new ClassPathResource(DEFAULT_APPLICATION_PROPERTIES);
            final ResourcePropertySource propertySource = new ResourcePropertySource(propertiesResource);
            LOG.info("Configured application properties from: {}", propertySource);
            return propertySource;
        } catch (final IOException ex) {
            throw new RuntimeException("Unable to load application properties from default location: "
                + DEFAULT_APPLICATION_PROPERTIES, ex);
        }
    }
}

package com.mytutorial.configuration;

import static org.springframework.core.env.StandardEnvironment.SYSTEM_ENVIRONMENT_PROPERTY_SOURCE_NAME;

import java.io.IOException;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

import org.springframework.context.ApplicationContextInitializer;

import org.springframework.context.ConfigurableApplicationContext;

import org.springframework.core.env.ConfigurableEnvironment;

import org.springframework.core.env.MutablePropertySources;

import org.springframework.core.env.PropertySource;

import org.springframework.core.io.ClassPathResource;

import org.springframework.core.io.Resource;

import org.springframework.core.io.support.ResourcePropertySource;

public class MyAppApplicationContextInitializer implements ApplicationContextInitializer<ConfigurableApplicationContext> {

public static final String DEFAULT_APPLICATION_PROPERTIES = "myapp-service.properties";

private static final Logger LOG = LoggerFactory.getLogger(MyAppApplicationContextInitializer.class);

@Override

public void initialize(final ConfigurableApplicationContext applicationContext) {

final ConfigurableEnvironment environment = applicationContext.getEnvironment();

final MutablePropertySources propertySources = environment.getPropertySources();

propertySources.addAfter(SYSTEM_ENVIRONMENT_PROPERTY_SOURCE_NAME, getApplicationProperties(environment));

}

/**

* Loads application properties from the configured resource location.

protected PropertySource<?> getApplicationProperties(final ConfigurableEnvironment environment) {

try {

final Resource propertiesResource = new ClassPathResource(DEFAULT_APPLICATION_PROPERTIES);

final ResourcePropertySource propertySource = new ResourcePropertySource(propertiesResource);

LOG.info("Configured application properties from: {}", propertySource);

return propertySource;

} catch (final IOException ex) {

throw new RuntimeException("Unable to load application properties from default location: "

+ DEFAULT_APPLICATION_PROPERTIES, ex);

}

The web.xml can configure the “contextInitializerClasses”.



   //.....
   <servlet>
        <servlet-name>MyApp-endpoint</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextClass</param-name>
            <param-value>org.springframework.web.context.support.AnnotationConfigWebApplicationContext</param-value>
        </init-param>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>com.mytutorial.configuration.MyAppEndpointConfiguration</param-value>
        </init-param>
        <init-param>
            <param-name>contextInitializerClasses</param-name>
            <param-value>com.mytutorial.configuration.MyAppApplicationContextInitializer</param-value>

        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>

//.....

<servlet-name>MyApp-endpoint</servlet-name>

<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>

<init-param>

<param-name>contextClass</param-name>

<param-value>org.springframework.web.context.support.AnnotationConfigWebApplicationContext</param-value>

</init-param>

<init-param>

<param-name>contextConfigLocation</param-name>

<param-value>com.mytutorial.configuration.MyAppEndpointConfiguration</param-value>

</init-param>

<init-param>

<param-name>contextInitializerClasses</param-name>

<param-value>com.mytutorial.configuration.MyAppApplicationContextInitializer</param-value>

</init-param>

<load-on-startup>1</load-on-startup>

</servlet>

It can also be used in JUnit tests as shown below.

…

« 1 … 24 25 26 27 28 29 30 »

Blog Archives

SOAP Web Service Tutorial with Apache CXF, Maven, and Eclipse

Splunk to analyse Java logs and other machine data

Spring 3.0 tutorial – Part 1 (Setter DI )

Spring 3.0 tutorial – Part 2 (Constructor DI )

Spring 3.0 tutorial – part 3 (Setter DI with annotations)

Spring 3.0 tutorial – part 4 (Setter DI with annotations and Java Config instead of XML)

Spring 3.0 tutorial – part 5 (Setter DI with Spring AOP and AspectJ)

Spring 3.0 tutorial – part 6 (with Hibernate & HSQLDB)

Spring 3.0 tutorial – part 7 (with JPA, Hibernate & HSQLDB)

Spring batch industrial strength tutorial – part1

Spring boot with Spring MVC, JPA, Hibernate & MySQL tutorial in 10 steps

Spring IO tutorial in 6 steps

Spring loading properties files with ApplicationContextInitializer

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