Web Service Simple Getting Started example

Web Service Simple Getting Started example
we generally implement Web service in a number of ways. I mainly use the CXF Apache plug-in and Axis 22.

WEB Services is an online service solution provided by the application provider in order to solve each problem, it mainly uses the soap (simple Object Access Protocol) protocol, the data transfer format is described in XML format, and therefore has cross-platform characteristics.

Technologies that are widely used in the Web:

1. TCP/IP: Universal network protocol, used by various devices
2. HTML (an application under the standard Universal Markup Language): a common user interface that can display data using HTML tags
3. Java: Write a common programming language that can run on any system, because Java has cross-platform features
4. XML (a subset of standard common markup languages): a common data expression language, an easy way to transfer structured data over the web

They are characterized by their openness, cross-platform and openness, which is the foundation of Web services.

Here is a simple getting started instance of Web service implementation using CXF Apache plug-ins


1======== Creating a new service interface

Package Com.clark;

Import Javax.jws.WebParam;
Import Javax.jws.WebService;

@WebService
Public interface Ihelloworld {

public string SayHello (@WebParam (name= "name") string name);

public int plus (int a,int b);
}
2======== Service Interface Implementation class

Package Com.clark.impl;

Import Com.clark.IHelloWorld;

public class Helloworldimpl implements Ihelloworld {

@Override
public string SayHello (string name) {
Return "Hello wolrd," +name;
}

@Override
public int plus (int a, int b) {
return a+b;
}

}

3============ Service Side

Package com.clark.service;

Import Javax.xml.ws.Endpoint;

Import Com.clark.impl.HelloWorldImpl;

public class Webserviceapp {
public static void Main (string[] args) {
SYSTEM.OUT.PRINTLN ("Web service Start");
Helloworldimpl implementor = new Helloworldimpl ();
String address = "Http://localhost:8080/IHelloWorld";
Endpoint.publish (address, implementor);
SYSTEM.OUT.PRINTLN ("Web service Started");
}
}

4============ Client (The following is primarily for Java common programs)
Package com.clark.client;

Import Org.apache.cxf.jaxws.JaxWsProxyFactoryBean;

Import Com.clark.IHelloWorld;

public class Helloworldclient {
public static void Main (string[] args) {
Jaxwsproxyfactorybean svr = new Jaxwsproxyfactorybean ();
Svr.setserviceclass (Ihelloworld.class);
Svr.setaddress ("Http://localhost:8080/CXFWebService/service/IHelloWorld");
Ihelloworld HW = (ihelloworld) svr.create ();
String name = Hw.sayhello ("CXF Apache implements Web Service");
int result = Hw.plus (2, 3);
SYSTEM.OUT.PRINTLN (name);
SYSTEM.OUT.PRINTLN (result);
}
}

4============== Client (Web development for integrated Web service in spring)
Package com.clark.web;

Import Org.springframework.context.ApplicationContext;
Import Org.springframework.context.support.ClassPathXmlApplicationContext;

Import Com.clark.IHelloWorld;

public class Helloworldclient {
public static void Main (string[] args) {
System.out.println ("Web Service start .....");
ApplicationContext context = new Classpathxmlapplicationcontext ("Applicationcontext.xml");

Ihelloworld HelloWorld = (ihelloworld) Context.getbean ("Client");

String name = Helloworld.sayhello ("1111111111");
int result = Helloworld.plus (3, 4);
System.out.println (name+ "" +result);

System.out.println ("Web Service end .....");
}
}

Applicationcontext.xml Configuration for 5============spring
<?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:jaxws= "Http://cxf.apache.org/jaxws"
Xsi:schemalocation= "
Http://www.springframework.org/schema/beans

Http://www.springframework.org/schema/beans/spring-beans.xsd
Http://cxf.apache.org/jaxws http://cxf.apache.org/schemas/jaxws.xsd ">

<jaxws:endpoint
Id= "HelloWorld"
Implementor= "Com.clark.impl.HelloWorldImpl"
address= "/ihelloworld"/>

<bean id= "Client" class= "Com.clark.IHelloWorld"
Factory-bean= "Clientfactory" factory-method= "create"/>

<bean id= "Clientfactory" class= "Org.apache.cxf.jaxws.JaxWsProxyFactoryBean" >
<property name= "ServiceClass" value= "Com.clark.IHelloWorld"/>
<property name= "Address"

Value= "Http://localhost:8080/CXFWebService/service/IHelloWorld"/>
</bean>
</beans>

Integrated Web Service Service (configuration of CXF servlet) in 6=============spring. xml
<?xml version= "1.0" encoding= "UTF-8"?>
<web-app xmlns:xsi= "http://www.w3.org/2001/XMLSchema-instance" xmlns= "Http://java.sun.com/xml/ns/javaee" 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>CXFWebService</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>

<context-param>
<param-name>contextConfigLocation</param-name>
<!--<param-value>classpath:applicationContext.xml</param-value>--
<param-value>WEB-INF/applicationContext.xml</param-value>
</context-param>

<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>

<servlet>
<servlet-name>CXFServlet</servlet-name>
<display-name>CXFServlet</display-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>/service/*</url-pattern>
</servlet-mapping>
</web-app>

7============= start service, Address bar input
HTTP://LOCALHOST:8080/CXFWEBSERVICE/SERVICE/IHELLOWORLD?WSDL can see the corresponding SOAP protocol specification is OK

Web Service Simple Getting Started example