• 计算器之webservice实现

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    一、根据我的上一篇博客

    MyEclipse构建Web Service（Xfire框架）

    下面是我实现的网页版的计算器，本来想着用php去调用webservice的接口，由于时间原因，现在用java去调用webservice接口。

    再根据原先实现过的吧B/S 架构的计算器作业，现将网页说明博客如下：

    Ext实现简单计算器

    二、编写自己的类

    根据上一篇博客的说明我们建立一个用于实现计算器的webservice类ExpWebService.java，其代码如下所示：
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    package server;
     
    import java.io.BufferedReader;
    import java.io.IOException;
    import java.io.InputStreamReader;
     
    import org.apache.commons.jexl.Expression;
    import org.apache.commons.jexl.ExpressionFactory;
    import org.apache.commons.jexl.JexlContext;
    import org.apache.commons.jexl.JexlHelper;
     
    /**
     *
    * 项目名称：CalculatorWebService 
    * 类名称：ExpWebService 
    * 类描述： 
    * 创建人：王少帅 
    * 创建时间：2013-12-12 下午02:58:32      
    * @version
     */
    public class ExpWebService {
         
        /**
         *
        * expCalculator(使用jexl自带的方式处理exp得到计算器的值) 
        * @param name
        * @return String
        * @Exception
         */
        public String expCalculator(String exp) throws Exception {
            // TODO Auto-generated method stub
            Expression e = ExpressionFactory.createExpression(exp);//使用提供的expression提供的方法
            JexlContext jc = JexlHelper.createContext();
            Object result = e.evaluate(jc);//计算出结果
            return result.toString();
        }
         
    }

    三、客户端去调用相应的webservice，这里是CalculatorWebService

    我们先new->webservice client 之后新建项目叫Calculator01，将服务器端的wsdl的url添加好即可，现在我们用到页面去实现计算器的功能，这里我们客户端（其实也在服务器端，以为是B/S 架构的），我们去调用CalculatorWebService提供的方法ExpWebService来求出计算结果。

    下面是包的结构：

    之后我们看到我们的action中类CalculatorAction.java中的代码如下：

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    package com.wss.action;
     
    import javax.servlet.http.HttpServletResponse;
     
    import org.apache.struts2.ServletActionContext;
     
    import server.CalculatorWebServiceClient;
    import server.CalculatorWebServicePortType;
     
    /**
     *
    * 项目名称：Calculator01 
    * 类名称：CalculatorAction 
    * 类描述：  接收客户端的计算式来计算结果
    * 创建人：王少帅 
    * 创建时间：2013-12-12 下午03:50:32      
    * @version
     */
    public class CalculatorAction {
        public String exp;
     
        public String getExp() {
            return exp;
        }
     
        public void setExp(String exp) {
            this.exp = exp;
        }
         
        public void execute() throws Exception{
     
            //这里使用webserviceClient来调用webservice的方法
            CalculatorWebServiceClient calculatorWebServiceClient = new CalculatorWebServiceClient();
            CalculatorWebServicePortType service  = calculatorWebServiceClient.getCalculatorWebServiceHttpPort();
             
            String result = service.expCalculator(exp); //调用expCalculator方法来实现
             
            HttpServletResponse response = ServletActionContext.getResponse();//返回页面进行查看
     
            response.getWriter().write(result);
             
        }
         
    }

    四、自动生成的文件分析

    如图自动生成的文件：


    下面是CalculatorWebServiceClient.java的文件内容：

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    package server;
     
    import java.net.MalformedURLException;
    import java.util.Collection;
    import java.util.HashMap;
    import javax.xml.namespace.QName;
    import org.codehaus.xfire.XFireRuntimeException;
    import org.codehaus.xfire.aegis.AegisBindingProvider;
    import org.codehaus.xfire.annotations.AnnotationServiceFactory;
    import org.codehaus.xfire.annotations.jsr181.Jsr181WebAnnotations;
    import org.codehaus.xfire.client.XFireProxyFactory;
    import org.codehaus.xfire.jaxb2.JaxbTypeRegistry;
    import org.codehaus.xfire.service.Endpoint;
    import org.codehaus.xfire.service.Service;
    import org.codehaus.xfire.soap.AbstractSoapBinding;
    import org.codehaus.xfire.transport.TransportManager;
     
    public class CalculatorWebServiceClient {
     
        private static XFireProxyFactory proxyFactory = new XFireProxyFactory();
        private HashMap endpoints = new HashMap();
        private Service service0;
     
        public CalculatorWebServiceClient() {
            create0();
            Endpoint CalculatorWebServicePortTypeLocalEndpointEP = service0 .addEndpoint(new QName("http://server", "CalculatorWebServicePortTypeLocalEndpoint"), new QName("http://server", "CalculatorWebServicePortTypeLocalBinding"), "xfire.local://CalculatorWebService");
            endpoints.put(new QName("http://server", "CalculatorWebServicePortTypeLocalEndpoint"), CalculatorWebServicePortTypeLocalEndpointEP);
            Endpoint CalculatorWebServiceHttpPortEP = service0 .addEndpoint(new QName("http://server", "CalculatorWebServiceHttpPort"), new QName("http://server", "CalculatorWebServiceHttpBinding"), "http://localhost:8080/CalculatorWebService/services/CalculatorWebService");
            endpoints.put(new QName("http://server", "CalculatorWebServiceHttpPort"), CalculatorWebServiceHttpPortEP);
        }
     
        public Object getEndpoint(Endpoint endpoint) {
            try {
                return proxyFactory.create((endpoint).getBinding(), (endpoint).getUrl());
            } catch (MalformedURLException e) {
                throw new XFireRuntimeException("Invalid URL", e);
            }
        }
     
        public Object getEndpoint(QName name) {
            Endpoint endpoint = ((Endpoint) endpoints.get((name)));
            if ((endpoint) == null) {
                throw new IllegalStateException("No such endpoint!");
            }
            return getEndpoint((endpoint));
        }
     
        public Collection getEndpoints() {
            return endpoints.values();
        }
     
        private void create0() {
            TransportManager tm = (org.codehaus.xfire.XFireFactory.newInstance().getXFire().getTransportManager());
            HashMap props = new HashMap();
            props.put("annotations.allow.interface", true);
            AnnotationServiceFactory asf = new AnnotationServiceFactory(new Jsr181WebAnnotations(), tm, new AegisBindingProvider(new JaxbTypeRegistry()));
            asf.setBindingCreationEnabled(false);
            service0 = asf.create((server.CalculatorWebServicePortType.class), props);
            {
                AbstractSoapBinding soapBinding = asf.createSoap11Binding(service0, new QName("http://server", "CalculatorWebServicePortTypeLocalBinding"), "urn:xfire:transport:local");
            }
            {
                AbstractSoapBinding soapBinding = asf.createSoap11Binding(service0, new QName("http://server", "CalculatorWebServiceHttpBinding"), "http://schemas.xmlsoap.org/soap/http");
            }
        }
     
        public CalculatorWebServicePortType getCalculatorWebServicePortTypeLocalEndpoint() {
            return ((CalculatorWebServicePortType)(this).getEndpoint(new QName("http://server", "CalculatorWebServicePortTypeLocalEndpoint")));
        }
     
        public CalculatorWebServicePortType getCalculatorWebServicePortTypeLocalEndpoint(String url) {
            CalculatorWebServicePortType var = getCalculatorWebServicePortTypeLocalEndpoint();
            org.codehaus.xfire.client.Client.getInstance(var).setUrl(url);
            return var;
        }
     
        public CalculatorWebServicePortType getCalculatorWebServiceHttpPort() {
            return ((CalculatorWebServicePortType)(this).getEndpoint(new QName("http://server", "CalculatorWebServiceHttpPort")));
        }
     
        public CalculatorWebServicePortType getCalculatorWebServiceHttpPort(String url) {
            CalculatorWebServicePortType var = getCalculatorWebServiceHttpPort();
            org.codehaus.xfire.client.Client.getInstance(var).setUrl(url);
            return var;
        }
     
        public static void main(String[] args) {
             
     
            CalculatorWebServiceClient client = new CalculatorWebServiceClient();
             
            //create a default service endpoint
            CalculatorWebServicePortType service = client.getCalculatorWebServiceHttpPort();
             
            //TODO: Add custom client code here
                    //
                    //service.yourServiceOperationHere();
             
            System.out.println("test client completed");
                    System.exit(0);
        }
     
    }


    下面这个是CalculatorWebServicePortType.java

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    package server;
     
    import javax.jws.WebMethod;
    import javax.jws.WebParam;
    import javax.jws.WebResult;
    import javax.jws.WebService;
    import javax.jws.soap.SOAPBinding;
     
    @WebService(name = "CalculatorWebServicePortType", targetNamespace = "http://server")
    @SOAPBinding(use = SOAPBinding.Use.LITERAL, parameterStyle = SOAPBinding.ParameterStyle.WRAPPED)
    public interface CalculatorWebServicePortType {
     
        @WebMethod(operationName = "expCalculator", action = "")
        @WebResult(name = "out", targetNamespace = "http://server")
        public String expCalculator(
                @WebParam(name = "exp", targetNamespace = "http://server") String exp);
     
    }


    这个是ExpCalculator.java

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    package server;
     
    import javax.xml.bind.annotation.XmlAccessType;
    import javax.xml.bind.annotation.XmlAccessorType;
    import javax.xml.bind.annotation.XmlElement;
    import javax.xml.bind.annotation.XmlRootElement;
    import javax.xml.bind.annotation.XmlType;
     
     
    /**
     * <p>Java class for anonymous complex type.
     *
     * <p>The following schema fragment specifies the expected content contained within this class.
     *
     * <pre>
     * &lt;complexType>
     *   &lt;complexContent>
     *     &lt;restriction base="{http://www.w3.org/2001/XMLSchema}anyType">
     *       &lt;sequence>
     *         &lt;element name="exp" type="{http://www.w3.org/2001/XMLSchema}string"/>
     *       &lt;/sequence>
     *     &lt;/restriction>
     *   &lt;/complexContent>
     * &lt;/complexType>
     * </pre>
     *
     *
     */
    @XmlAccessorType(XmlAccessType.FIELD)
    @XmlType(name = "", propOrder = {
        "exp"
    })
    @XmlRootElement(name = "expCalculator")
    public class ExpCalculator {
     
        @XmlElement(required = true, nillable = true)
        protected String exp;
     
        /**
         * Gets the value of the exp property.
         *
         * @return
         *     possible object is
         *     {@link String }
         *    
         */
        public String getExp() {
            return exp;
        }
     
        /**
         * Sets the value of the exp property.
         *
         * @param value
         *     allowed object is
         *     {@link String }
         *    
         */
        public void setExp(String value) {
            this.exp = value;
        }
     
    }


    这个是ExpCalculatorResponse.java

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    package server;
     
    import javax.xml.bind.annotation.XmlAccessType;
    import javax.xml.bind.annotation.XmlAccessorType;
    import javax.xml.bind.annotation.XmlElement;
    import javax.xml.bind.annotation.XmlRootElement;
    import javax.xml.bind.annotation.XmlType;
     
     
    /**
     * <p>Java class for anonymous complex type.
     *
     * <p>The following schema fragment specifies the expected content contained within this class.
     *
     * <pre>
     * &lt;complexType>
     *   &lt;complexContent>
     *     &lt;restriction base="{http://www.w3.org/2001/XMLSchema}anyType">
     *       &lt;sequence>
     *         &lt;element name="out" type="{http://www.w3.org/2001/XMLSchema}string"/>
     *       &lt;/sequence>
     *     &lt;/restriction>
     *   &lt;/complexContent>
     * &lt;/complexType>
     * </pre>
     *
     *
     */
    @XmlAccessorType(XmlAccessType.FIELD)
    @XmlType(name = "", propOrder = {
        "out"
    })
    @XmlRootElement(name = "expCalculatorResponse")
    public class ExpCalculatorResponse {
     
        @XmlElement(required = true, nillable = true)
        protected String out;
     
        /**
         * Gets the value of the out property.
         *
         * @return
         *     possible object is
         *     {@link String }
         *    
         */
        public String getOut() {
            return out;
        }
     
        /**
         * Sets the value of the out property.
         *
         * @param value
         *     allowed object is
         *     {@link String }
         *    
         */
        public void setOut(String value) {
            this.out = value;
        }
     
    }


    这个是ObjectFactory.java

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    package server;
     
    import javax.xml.bind.annotation.XmlRegistry;
     
     
    /**
     * This object contains factory methods for each
     * Java content interface and Java element interface
     * generated in the server package.
     * <p>An ObjectFactory allows you to programatically
     * construct new instances of the Java representation
     * for XML content. The Java representation of XML
     * content can consist of schema derived interfaces
     * and classes representing the binding of schema
     * type definitions, element declarations and model
     * groups.  Factory methods for each of these are
     * provided in this class.
     *
     */
    @XmlRegistry
    public class ObjectFactory {
     
     
        /**
         * Create a new ObjectFactory that can be used to create new instances of schema derived classes for package: server
         *
         */
        public ObjectFactory() {
        }
     
        /**
         * Create an instance of {@link ExpCalculator }
         *
         */
        public ExpCalculator createExpCalculator() {
            return new ExpCalculator();
        }
     
        /**
         * Create an instance of {@link ExpCalculatorResponse }
         *
         */
        public ExpCalculatorResponse createExpCalculatorResponse() {
            return new ExpCalculatorResponse();
        }
     
    }


    这个是package-info.java

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    @javax.xml.bind.annotation.XmlSchema(namespace = "http://server", elementFormDefault = javax.xml.bind.annotation.XmlNsForm.QUALIFIED)
    package server;



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  • 原文地址：https://www.cnblogs.com/wang3680/p/cc7c4a956cb9af288af3c878731eb8e3.html
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