（十一）web服务与javaweb结合（2）

一、解决问题及解决方法

• 解决问题：上章节用监听器的方式是有缺陷的：web服务的端口和web工程的端口不能一致。
• 解决方案：将webService绑定到web工程中，使得共用一个端口。

二、案例

　　2.1　　创建一个web工程名：web_webService

　　2.2　　编写两个服务接口

• 注意：

1. 　　本例使用apache CXF3.2.0的框架来架构webService服务
2. 在接口定义之前加上@WebService标注，表明这是一个WebService服务，否则在生成服务端时不能找到相应的接口；
3. 这里@WebService标注的targetNamespace一定要填写内容，不然在生成WebService服务端的时候会报如下的错误，这个命名空间起始就是包名的倒序。

package www.shyroke.com;

import javax.jws.WebParam;
import javax.jws.WebResult;
import javax.jws.WebService;

@WebService(targetNamespace="http://service.shyroke.com/")
public interface IFirst {

    @WebResult(name="addResult")
    public int add(@WebParam(name="x")int x,@WebParam(name="y")int y);
}

package www.shyroke.com;

import javax.jws.WebResult;
import javax.jws.WebService;

/**
 * 锟节讹拷锟斤拷锟接口凤拷锟斤拷
 * 锟斤拷锟节伙拷取锟斤拷前系统时锟斤拷
 * @author Administrator
 *
 */
@WebService(targetNamespace="http://service.shyroke.com/")
public interface ISecond {

    @WebResult(name="getSysTimeResult")
    public String getSysTime();
}

　　2.2　　编写服务接口实现类

package www.shyroke.com;

import javax.jws.WebService;

@WebService(endpointInterface="www.shyroke.com.IFirst")
public class FirstImpl implements IFirst {

    @Override
    public int add(int x, int y) {
        return x+y;
    }

}

package www.shyroke.com;

import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Date;

import javax.jws.WebService;

@WebService(endpointInterface = "com.shyroke.service.ISecond")
public class SecondImpl implements ISecond {

    @Override
    public String getSysTime() {
        DateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");

        Date date = new Date();

        return dateFormat.format(date);
    }

}

　　2.3　　发布服务并把服务绑定到web工程

• 生成webService服务  ： File->New->Other->Web Services->WebService，在Service implementation中选择提供服务的实现类。
• 

  

  

  

• 上述发布了第一个服务并绑定到了web工程，第二个服务的发布也按照上面图的操作来做即可。
• 发布完两个服务的项目结构为下图：
• 
• 注意：    1. 到现在为止如果开启服务器会报错，因为工具在cxf-beans.xml中生成了如下，而我们在该目录下并没有，所以要把这三行去掉：

<import resource="classpath:META-INF/cxf/cxf.xml" />
    <import resource="classpath:META-INF/cxf/cxf-extension-soap.xml" />
    <import resource="classpath:META-INF/cxf/cxf-servlet.xml" />

• 注意：    2. 在cxf-beans.xml中把<jaxws:endpoint>属性里面有serviceName的属性和endpointName和address属性去掉，如下：

<?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-2.5.xsd http://cxf.apache.org/jaxws http://cxf.apache.org/schemas/jaxws.xsd">
    <jaxws:endpoint xmlns:tns="http://service.shyroke.com/"
        id="first" implementor="www.shyroke.com.FirstImpl" wsdlLocation="wsdl/firstimpl.wsdl">
        <jaxws:features>
            <bean class="org.apache.cxf.feature.LoggingFeature" />
        </jaxws:features>
    </jaxws:endpoint>
    <jaxws:endpoint xmlns:tns="http://service.shyroke.com/"
        id="second" implementor="www.shyroke.com.SecondImpl" wsdlLocation="wsdl/secondimpl.wsdl">
        <jaxws:features>
            <bean class="org.apache.cxf.feature.LoggingFeature" />
        </jaxws:features>
    </jaxws:endpoint>
</beans>

• 注意：3. 修改 firstimpl.wsdl和secondimpl.wsdl文件中的端口号，不能和tomcat工程一致（本例中的tomcat端口号为8080）
• firstimpl.wsdl

<?xml version="1.0" encoding="UTF-8"?>
<wsdl:definitions name="FirstImplService" targetNamespace="http://com.shyroke.www/" xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/" xmlns:tns="http://com.shyroke.www/" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap12="http://schemas.xmlsoap.org/wsdl/soap12/" xmlns:ns1="http://service.shyroke.com/">
  <wsdl:import namespace="http://service.shyroke.com/" location="IFirst.wsdl">
    </wsdl:import>
  <wsdl:binding name="FirstImplServiceSoapBinding" type="ns1:IFirst">
    <soap12:binding style="document" transport="http://schemas.xmlsoap.org/soap/http"/>
    <wsdl:operation name="add">
      <soap12:operation soapAction="" style="document"/>
      <wsdl:input name="add">
        <soap12:body use="literal"/>
      </wsdl:input>
      <wsdl:output name="addResponse">
        <soap12:body use="literal"/>
      </wsdl:output>
    </wsdl:operation>
  </wsdl:binding>
  <wsdl:service name="FirstImplService">
    <wsdl:port name="FirstImplPort" binding="tns:FirstImplServiceSoapBinding">
      <soap12:address location="http://localhost:8082/web_webService/services/FirstImplPort"/>
    </wsdl:port>
  </wsdl:service>
</wsdl:definitions>

• secondimpl.wsdl

<?xml version="1.0" encoding="UTF-8"?>
<wsdl:definitions name="SecondImplService" targetNamespace="http://com.shyroke.www/" xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/" xmlns:tns="http://com.shyroke.www/" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap12="http://schemas.xmlsoap.org/wsdl/soap12/" xmlns:ns1="http://service.shyroke.com/">
  <wsdl:import namespace="http://service.shyroke.com/" location="ISecond.wsdl">
    </wsdl:import>
  <wsdl:binding name="SecondImplServiceSoapBinding" type="ns1:ISecond">
    <soap12:binding style="document" transport="http://schemas.xmlsoap.org/soap/http"/>
    <wsdl:operation name="getSysTime">
      <soap12:operation soapAction="" style="document"/>
      <wsdl:input name="getSysTime">
        <soap12:body use="literal"/>
      </wsdl:input>
      <wsdl:output name="getSysTimeResponse">
        <soap12:body use="literal"/>
      </wsdl:output>
    </wsdl:operation>
  </wsdl:binding>
  <wsdl:service name="SecondImplService">
    <wsdl:port name="SecondImplPort" binding="tns:SecondImplServiceSoapBinding">
      <soap12:address location="http://localhost:8081/web_webService/services/SecondImplPort"/>
    </wsdl:port>
  </wsdl:service>
</wsdl:definitions>

• 2.4      启动服务

• 查看web.xml ，可知webservice的端口url-pattern

<?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_3_0.xsd" version="3.0">
  <display-name>web_webService</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>
  <servlet>
    <description>Apache CXF Endpoint</description>
    <display-name>cxf</display-name>
    <servlet-name>cxf</servlet-name>
    <servlet-class>org.apache.cxf.transport.servlet.CXFServlet</servlet-class>
    <load-on-startup>1</load-on-startup>
  </servlet>
  <servlet-mapping>
    <servlet-name>cxf</servlet-name>
    <url-pattern>/services/*</url-pattern>
  </servlet-mapping>
  <session-config>
    <session-timeout>60</session-timeout>
  </session-config>
  <context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>WEB-INF/cxf-beans.xml</param-value>
  </context-param>
  <listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>
</web-app>

　　2.5　　生成客户端

• 用工具生成客户端（具体步骤查看前几章）

　　2.6　　测试

package www.chyroke.com.test;

import com.shyroke.service.IFirst;

import www.shyroke.client.FirstImplService;

public class TestkMain {
    public static void main(String[] args) {
        FirstImplService firstService=new FirstImplService();
        IFirst iFirst=firstService.getFirstImplPort();
        System.out.println("result==="+iFirst.add(5, 8));
    }
}

结果：

• 缺陷：虽然将webservice和web项目绑定在了一起，但是还是不能共同一个端口。