Spring WS - Servidor de Escrita

Neste capítulo, vamos entender como criar um servidor de aplicativos da web usando Spring WS.

Degrau	Descrição
1	Crie um projeto com um nome countryService em um pacote com.tutorialspoint conforme explicado no capítulo Spring WS - First Application.
2	Crie countries.xsd, classes de domínio, CountryRepository e CountryEndPoint conforme explicado nas etapas a seguir.
3	Atualize spring-ws-servlet.xml na subpasta / WEB-INF.
4	A etapa final é criar conteúdo para todos os arquivos de origem e configuração e exportar o aplicativo conforme explicado abaixo.

countries.xsd

<xs:schema xmlns:xs = "http://www.w3.org/2001/XMLSchema" 
   xmlns:tns = "http://tutorialspoint/schemas"
   targetNamespace = "http://tutorialspoint/schemas" 
   elementFormDefault = "qualified">

   <xs:element name = "getCountryRequest">
      <xs:complexType>
         <xs:sequence>
            <xs:element name = "name" type = "xs:string"/>
         </xs:sequence>
      </xs:complexType>
   </xs:element>

   <xs:element name = "getCountryResponse">
      <xs:complexType>
         <xs:sequence>
            <xs:element name = "country" type = "tns:country"/>
         </xs:sequence>
      </xs:complexType>
   </xs:element>

   <xs:complexType name = "country">
      <xs:sequence>
         <xs:element name = "name" type = "xs:string"/>
         <xs:element name = "population" type = "xs:int"/>
         <xs:element name = "capital" type = "xs:string"/>
         <xs:element name = "currency" type = "tns:currency"/>
      </xs:sequence>
   </xs:complexType>

   <xs:simpleType name = "currency">
      <xs:restriction base = "xs:string">
         <xs:enumeration value = "GBP"/>
         <xs:enumeration value = "USD"/>
         <xs:enumeration value = "INR"/>
      </xs:restriction>
   </xs:simpleType>
</xs:schema>

Crie o Projeto

Vamos abrir o console de comando, vá para o diretório C: \ MVN e execute o seguinte mvn comando.

C:\MVN>mvn archetype:generate -DarchetypeGroupId = org.springframework.ws 
-DarchetypeArtifactId = spring-ws-archetype -DgroupId = com.tutorialspoint 
-DartifactId = countryService

O Maven iniciará o processamento e criará a estrutura completa do projeto do aplicativo Java.

[INFO] Scanning for projects...
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building Maven Stub Project (No POM) 1
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] Using property: groupId = com.tutorialspoint
[INFO] Using property: artifactId = countryService
Define value for property 'version':  1.0-SNAPSHOT: :
[INFO] Using property: package = com.tutorialspoint
Confirm properties configuration:
groupId: com.tutorialspoint
artifactId: countryService
version: 1.0-SNAPSHOT
package: com.tutorialspoint
 Y: :
[INFO] -------------------------------------------------------------------------
---
[INFO] Using following parameters for creating project from Old (1.x) Archetype:
 spring-ws-archetype:2.0.0-M1
[INFO] -------------------------------------------------------------------------
---
[INFO] Parameter: groupId, Value: com.tutorialspoint
[INFO] Parameter: packageName, Value: com.tutorialspoint
[INFO] Parameter: package, Value: com.tutorialspoint
[INFO] Parameter: artifactId, Value: countryService
[INFO] Parameter: basedir, Value: C:\mvn
[INFO] Parameter: version, Value: 1.0-SNAPSHOT
[INFO] project created from Old (1.x) Archetype in dir: C:\mvn\countryService
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 35.989 s
[INFO] Finished at: 2017-01-21T11:18:31+05:30
[INFO] Final Memory: 17M/178M
[INFO] ------------------------------------------------------------------------

Agora vá para o diretório C: / MVN. Veremos um projeto de aplicativo java criado com o nome countryService (conforme especificado em artifactId). Atualize o pom.xml.

pom.xml

<?xml version = "1.0" encoding = "UTF-8"?>
<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.tutorialspoint.hr</groupId>
   <artifactId>countryService</artifactId>
   <packaging>war</packaging>
   <version>1.0-SNAPSHOT</version>
   <name>countryService Spring-WS Application</name>
   <url>http://www.springframework.org/spring-ws</url>
   
   <build>
      <finalName>countryService</finalName>
   </build>
   
   <dependencies>
      <dependency>
         <groupId>org.springframework.ws</groupId>
         <artifactId>spring-ws-core</artifactId>
         <version>2.4.0.RELEASE</version>
      </dependency>
      
      <dependency>
         <groupId>jdom</groupId>
         <artifactId>jdom</artifactId>
         <version>1.0</version>
      </dependency>
      
      <dependency>
         <groupId>jaxen</groupId>
         <artifactId>jaxen</artifactId>
         <version>1.1</version>
      </dependency>
      
      <dependency>
         <groupId>wsdl4j</groupId>
         <artifactId>wsdl4j</artifactId>
         <version>1.6.2</version>
      </dependency>
   </dependencies>
</project>

Criar classes de domínio

Copie o countries.xsd na pasta C: \ mvn \ countryService \ src \ main \ resources. Vamos abrir o console de comando, vá para o diretório C: \ mvn \ countryService \ src \ main \ resources e execute o seguintexjc comando para gerar classes de domínio usando o countries.xsd.

C:\MVN\countryService\src\main\resources>xjc -p com.tutorialspoint countries.xsd

O Maven iniciará o processamento e criará as classes de domínio no pacote com.tutorialspoint.

parsing a schema...
compiling a schema...
com\tutorialspoint\Country.java
com\tutorialspoint\Currency.java
com\tutorialspoint\GetCountryRequest.java
com\tutorialspoint\GetCountryResponse.java
com\tutorialspoint\ObjectFactory.java
com\tutorialspoint\package-info.java

Crie a pasta java na pasta C: \ mvn \ countryService \ src \ main. Copie todas as classes da pasta C: \ mvn \ countryService \ src \ main \ java. Crie CountryRepository e CountryEndPoint para representar o banco de dados do país e o servidor do país, respectivamente.

CountryRepository.java

package com.tutorialspoint;

import java.util.ArrayList;
import java.util.List;
import org.springframework.beans.propertyeditors.CurrencyEditor;
import org.springframework.stereotype.Component;
import org.springframework.util.Assert;

@Component
public class CountryRepository {
   private static final List<Country> countries = new ArrayList<Country>();

   public CountryRepository(){
      initData();
   }
   public void initData() {
      Country us = new Country();
      us.setName("United States");
      us.setCapital("Washington");
      us.setCurrency(Currency.USD);
      us.setPopulation(46704314);
   
      countries.add(us);
   
      Country india = new Country();
      india.setName("India");
      india.setCapital("New Delhi");
      india.setCurrency(Currency.INR);
      india.setPopulation(138186860);

      countries.add(india);
    
      Country uk = new Country();
      uk.setName("United Kingdom");
      uk.setCapital("London");
      uk.setCurrency(Currency.GBP);
      uk.setPopulation(63705000);
   
      countries.add(uk);
   }
   public Country findCountry(String name) {
      Assert.notNull(name);
      Country result = null;

      for (Country country : countries) {
         if (name.trim().equals(country.getName())) {
            result = country;
         }
      }
      return result;
   }
}

CountryEndPoint.java

package com.tutorialspoint.ws;

import org.jdom.JDOMException;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.ws.server.endpoint.annotation.Endpoint;
import org.springframework.ws.server.endpoint.annotation.PayloadRoot;
import org.springframework.ws.server.endpoint.annotation.RequestPayload;
import org.springframework.ws.server.endpoint.annotation.ResponsePayload;

import com.tutorialspoint.Country;
import com.tutorialspoint.CountryRepository;
import com.tutorialspoint.GetCountryRequest;
import com.tutorialspoint.GetCountryResponse;

@Endpoint
public class CountryEndPoint {
   private static final String NAMESPACE_URI = "http://tutorialspoint/schemas";
   private CountryRepository countryRepository;

   @Autowired
   public CountryEndPoint(CountryRepository countryRepository) throws JDOMException {
      this.countryRepository = countryRepository;
   }
   @PayloadRoot(namespace = NAMESPACE_URI, localPart = "getCountryRequest")
   @ResponsePayload
   public GetCountryResponse getCountry(@RequestPayload GetCountryRequest request) 
      throws JDOMException {
      
      Country country = countryRepository.findCountry(request.getName());
      GetCountryResponse response = new GetCountryResponse();
      response.setCountry(country);
      return response;
   }
}

/WEB-INF/spring-ws-servlet.xml

<beans xmlns = "http://www.springframework.org/schema/beans"
   xmlns:xsi = "http://www.w3.org/2001/XMLSchema-instance"
   xmlns:context = "http://www.springframework.org/schema/context"
   xmlns:sws = "http://www.springframework.org/schema/web-services"
   xsi:schemaLocation = "http://www.springframework.org/schema/beans
   
   http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
   http://www.springframework.org/schema/web-services
   http://www.springframework.org/schema/web-services/web-services-2.0.xsd
   http://www.springframework.org/schema/context 
   http://www.springframework.org/schema/context/spring-context-3.0.xsd">

   <context:component-scan base-package = "com.tutorialspoint"/>
   <sws:annotation-driven/>

   <sws:dynamic-wsdl id="countries"
      portTypeName = "CountriesPort"
      locationUri = "/countryService/"
      targetNamespace = "http://tutorialspoint.com/definitions">
      <sws:xsd location = "/WEB-INF/countries.xsd"/>
   </sws:dynamic-wsdl>
</beans>

/WEB-INF/web.xml

<web-app 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"
   version = "2.4">

   <display-name>TutorialsPoint Country Service</display-name>

   <servlet>
      <servlet-name>spring-ws</servlet-name>
      <servlet-class>org.springframework.ws.transport.http.MessageDispatcherServlet
      </servlet-class>
      <init-param>
         <param-name>transformWsdlLocations</param-name>
         <param-value>true</param-value>
      </init-param>
   </servlet>
   
   <servlet-mapping>
      <servlet-name>spring-ws</servlet-name>
      <url-pattern>/*</url-pattern>
   </servlet-mapping>
</web-app>

Construir o Projeto

Vamos abrir o console de comando. Vá para o diretório C: \ MVN \ countryService e execute o seguintemvn comando.

C:\MVN\countryService>mvn clean package

Maven começará a construir o projeto.

INFO] Scanning for projects...
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building countryService Spring-WS Application 1.0-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] --- maven-clean-plugin:2.5:clean (default-clean) @ countryService ---
[INFO] Deleting C:\mvn\countryService\target
[INFO]
[INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ countrySer
vice ---
[WARNING] Using platform encoding (Cp1252 actually) to copy filtered resources,
i.e. build is platform dependent!
[INFO] Copying 0 resource
[INFO]
[INFO] --- maven-compiler-plugin:3.1:compile (default-compile) @ countryService
---
[INFO] Changes detected - recompiling the module!
[WARNING] File encoding has not been set, using platform encoding Cp1252, i.e. 
build is platform dependent!
[INFO] Compiling 4 source files to C:\mvn\countryService\target\classes
[INFO]
[INFO] --- maven-resources-plugin:2.6:testResources (default-testResources) @ co
untryService ---
[WARNING] Using platform encoding (Cp1252 actually) to copy filtered resources,
i.e. build is platform dependent!
[INFO] skip non existing resourceDirectory C:\mvn\countryService\src\test\resour
ces
[INFO]
[INFO] --- maven-compiler-plugin:3.1:testCompile (default-testCompile) @ country
Service ---
[INFO] No sources to compile
[INFO]
[INFO] --- maven-surefire-plugin:2.12.4:test (default-test) @ countryService ---

[INFO] No tests to run.
[INFO]
[INFO] --- maven-war-plugin:2.2:war (default-war) @ countryService ---
[INFO] Packaging webapp
[INFO] Assembling webapp [countryService] in [C:\mvn\countryService\target\count
ryService]
[INFO] Processing war project
[INFO] Copying webapp resources [C:\mvn\countryService\src\main\webapp]
[INFO] Webapp assembled in [5137 msecs]
[INFO] Building war: C:\mvn\countryService\target\countryService.war
[INFO] WEB-INF\web.xml already added, skipping
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 16.484 s
[INFO] Finished at: 2017-01-28T09:07:59+05:30
[INFO] Final Memory: 19M/170M
[INFO] ------------------------------------------------------------------------

Execute o projeto

Depois de criar os arquivos de origem e configuração, exporte o arquivo countryService.war na pasta webapps do Tomcat.

Agora, inicie o servidor Tomcat e verifique se podemos acessar outras páginas da web a partir da pasta webapps usando um navegador padrão. Faça uma solicitação POST para a URL - http: // localhost: 8080 / countryService / e, usando qualquer cliente SOAP, faça a seguinte solicitação.

<x:Envelope xmlns:x = "http://schemas.xmlsoap.org/soap/envelope/" 
   xmlns:tns = "http://tutorialspoint/schemas">
   <x:Header/>
   <x:Body>
      <tns:getCountryRequest>
         <tns:name>United States</tns:name>
      </tns:getCountryRequest>
   </x:Body>
</x:Envelope>

Você verá o seguinte resultado.

<SOAP-ENV:Envelope xmlns:SOAP-ENV = "http://schemas.xmlsoap.org/soap/envelope/">
   <SOAP-ENV:Header/>
   <SOAP-ENV:Body>
      <ns2:getCountryResponse xmlns:ns2 = "http://tutorialspoint/schemas">
         <ns2:country>
            <ns2:name>United States</ns2:name>
            <ns2:population>46704314</ns2:population>
            <ns2:capital>Washington</ns2:capital>
            <ns2:currency>USD</ns2:currency>
         </ns2:country>
      </ns2:getCountryResponse>
   </SOAP-ENV:Body>
</SOAP-ENV:Envelope>