TK-Student: August 2011

Monday, August 29, 2011

Simple Spring

Download spring framework from (http://www.springsource.org/download) and commons-logging-1.1.1 from (http://commons.apache.org/logging/download_logging.cgi)
Unzip the spring-framework-3.1.0.M2-with-docs.zip and commons-logging-1.1.1-src.zip
Import all jar files contained in dist folder and commons-logging-1.1.1.jar into your project.
create Hellobean.java

public class HelloBean {
    private String helloWord;
    public void setHelloWord(String helloWord) {
        this.helloWord = helloWord;
    }
    public String getHelloWord() {
        return helloWord;
    }
}

5. create applicationContext.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE beans PUBLIC "-//SPRING/DTD BEAN/EN"
"http://www.springframework.org/dtd/spring-beans.dtd">
<beans>
    <bean id="helloBean" class="com.cht.paas.springtest.HelloBean">
        <property name="helloWord">
            <value>Hello Hello Testing</value>
        </property>
    </bean>
</beans>

6. create demo java:

import org.springframework.core.io.FileSystemResource;
import org.springframework.core.io.Resource;
import org.springframework.beans.factory.BeanFactory;
import org.springframework.beans.factory.xml.XmlBeanFactory;
public class SpringDemo {
    public static void main(String[] args) {
        Resource rs = new FileSystemResource("applicationConfig.xml");
        BeanFactory factory = new XmlBeanFactory(rs);
        HelloBean hello = (HelloBean) factory.getBean("helloBean");
        hello.setHelloWord("This is setting hello world");
        System.out.println(hello.getHelloWord());
    }
}

References:

Sunday, August 28, 2011

Simple Jersey

Download the jersey.zip file from (http://download.java.net/maven/2/com/sun/jersey/jersey-archive/1.8/jersey-archive-1.8.zip)
nzip jersey-archive-1.8.zip and import all the jar files contained lib folder.
Create Hello.java:

import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;
@Path("/hello")
public class Hello {
// This method is called if TEXT_PLAIN is request
@GET
@Produces(MediaType.TEXT_PLAIN)
public String sayPlainTextHello() {
return "Hello World";
}
// This method is called if XML is request
@GET
@Produces(MediaType.TEXT_XML)
public String sayXMLHello() {
return "<?xml version=\"1.0\"?>" + "<hello> Hello Jersey" + "</hello>";
}
// This method is called if HTML is request
@GET
@Produces(MediaType.TEXT_HTML)
public String sayHtmlHello() {
return "<html> " + "<title>" + "Hello World" + "</title>"
+ "<body><h1>" + "Hello Jersey" + "</body></h1>" + "</html> ";
}
}

4. In web.xml, add the following context:

<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
    id="WebApp_ID" version="2.5">
    <display-name>JerseyTest</display-name>
    <welcome-file-list>
        <welcome-file>index.html</welcome-file>
        <welcome-file>index.htm</welcome-file>
        <welcome-file>index.jsp</welcome-file>
        <welcome-file>default.html</welcome-file>
        <welcome-file>default.htm</welcome-file>
        <welcome-file>default.jsp</welcome-file>
    </welcome-file-list>
    <display-name>Jersey Service</display-name>
    <servlet>
        <servlet-name>Jersey REST Service</servlet-name>
        <servlet-class>com.sun.jersey.spi.container.servlet.ServletContainer</servlet-class>
        <init-param>
            <param-name>com.sun.jersey.config.property.packages</param-name>
            <param-value>com.cht.paas.jersey</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>Jersey REST Service</servlet-name>
        <url-pattern>/rest/*</url-pattern>
    </servlet-mapping>
</web-app>

5. start your tomcat server and enter the url: http://localhost:8080/JerseyTest/rest/hello
References:

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