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【WebService】快速构建WebService示例

 1 package com.slp.webservice;
 2 
 3 import javax.jws.WebService;
 4 
 5 /**
 6  * Created by sanglp on 2017/2/25.
 7  * 接口
 8  */
 9 @WebService
10 public interface IMyService {
11     public int add(int a,int b);
12     public  int minus(int a,int b);
13 }
package com.slp.webservice;

import javax.jws.WebService;

/**
 * Created by sanglp on 2017/2/25.
 * 实现
 */
@WebService(endpointInterface = "com.slp.webservice.IMyService")
public class MyServiceImpl implements IMyService {
    @Override
    public int add(int a, int b) {
        System.out.println(a+"+"+b+"="+(a+b));
        return a+b;
    }

    @Override
    public int minus(int a, int b) {
        System.out.println(a+"-"+b+"="+(a-b));
        return a-b;
    }
}
package com.slp.webservice;

import javax.xml.ws.Endpoint;

/**
 * Created by sanglp on 2017/2/25.
 * 服务
 */
public class MyServer {
    public static void main(String [] args){
        String address="http://localhost:8888/ns";
        Endpoint.publish(address,new MyServiceImpl());

    }
}

访问http://localhost:8888/ns?wsdl得到的页面

<?xml version="1.0" encoding="UTF-8"?>
<!-- Published by JAX-WS RI (http://jax-ws.java.net). RI‘s version is JAX-WS RI 2.2.9-b130926.1035 svn-revision#5f6196f2b90e9460065a4c2f4e30e065b245e51e. -->
<!-- Generated by JAX-WS RI (http://jax-ws.java.net). RI‘s version is JAX-WS RI 2.2.9-b130926.1035 svn-revision#5f6196f2b90e9460065a4c2f4e30e065b245e51e. -->
<definitions xmlns="http://schemas.xmlsoap.org/wsdl/" name="MyServiceImplService" targetNamespace="http://webservice.slp.com/" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:tns="http://webservice.slp.com/" xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/" xmlns:wsam="http://www.w3.org/2007/05/addressing/metadata" xmlns:wsp1_2="http://schemas.xmlsoap.org/ws/2004/09/policy" xmlns:wsp="http://www.w3.org/ns/ws-policy" xmlns:wsu="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd">
<types>
<xsd:schema>
<xsd:import schemaLocation="http://localhost:8888/ns?xsd=1" namespace="http://webservice.slp.com/"/>
</xsd:schema>
</types>
<message name="add">
<part name="parameters" element="tns:add"/>
</message>
<message name="addResponse">
<part name="parameters" element="tns:addResponse"/>
</message>
<message name="minus">
<part name="parameters" element="tns:minus"/>
</message>
<message name="minusResponse">
<part name="parameters" element="tns:minusResponse"/>
</message>
<portType name="IMyService">
<operation name="add">
<input message="tns:add" wsam:Action="http://webservice.slp.com/IMyService/addRequest"/>
<output message="tns:addResponse" wsam:Action="http://webservice.slp.com/IMyService/addResponse"/>
</operation>
<operation name="minus">
<input message="tns:minus" wsam:Action="http://webservice.slp.com/IMyService/minusRequest"/>
<output message="tns:minusResponse" wsam:Action="http://webservice.slp.com/IMyService/minusResponse"/>
</operation>
</portType>
<binding type="tns:IMyService" name="MyServiceImplPortBinding">
<soap:binding style="document" transport="http://schemas.xmlsoap.org/soap/http"/>
<operation name="add">
<soap:operation soapAction=""/>
<input>
<soap:body use="literal"/>
</input>
<output>
<soap:body use="literal"/>
</output>
</operation>
<operation name="minus">
<soap:operation soapAction=""/>
<input>
<soap:body use="literal"/>
</input>
<output>
<soap:body use="literal"/>
</output>
</operation>
</binding>
<service name="MyServiceImplService">
<port name="MyServiceImplPort" binding="tns:MyServiceImplPortBinding">
<soap:address location="http://localhost:8888/ns"/>
</port>
</service>
</definitions>
package com.slp.webservice;

import javax.xml.namespace.QName;
import javax.xml.ws.Service;
import java.net.MalformedURLException;
import java.net.URL;

/**
 * Created by sanglp on 2017/2/25.
 */
public class TestClient {
    public static void main(String [] args) throws MalformedURLException {
       //创建访问wsdl服务地址的url
        URL url = new URL("http://localhost:8888/ns?wsdl");
        //通过QName指明服务的具体消息
        QName sname = new QName("http://webservice.slp.com/","MyServiceImplService");
        //创建服务
        Service service = Service.create(url,sname);
        //实现接口
        IMyService ms=service.getPort(IMyService.class);
        System.out.println(ms.add(12,33));
        //以上服务有问题,依然依赖于IMyService接口
    }
}

webService三要素:

SOAP,WSDL,UDDI.soap用来描述传递消息的格式,wsdl用来描述如何访问具体的接口,uudi用来管理,分发,查询webservice.

SOAP=RPC+HTTP+XML

SOAP简单的理解就是这样的一个开放协议:采用HTTP作为底层通讯协议

RPC作为一致性的调用途径,XML作为数据传送的格式,允许服务提供者和服务客户经过防火墙在INTERNET进行通讯交互。RPC的描叙可能不大准确,因为SOAP一开始构思就是要实现平台与环境的无关性和独立性,每一个通过网络的远程调用都可以通过SOAP封装起来,包括DCE(Distributed Computing Environment ) RPC CALLS,COM/DCOM CALLS, CORBA CALLS, JAVA CALLS,etc。

SOAP 使用 HTTP 传送 XML,尽管HTTP 不是有效率的通讯协议,而且 XML 还需要额外的文件解析(parse),两者使得交易的速度大大低于其它方案。但是XML 是一个开放、健全、有语义的讯息机制,而 HTTP 是一个广泛又能避免许多关于防火墙的问题,从而使SOAP得到了广泛的应用。但是如果效率对你来说很重要,那么你应该多考虑其它的方式,而不要用 SOAP。

wsdl讲解:
types:定义访问的类型
message:SOAP
portType:指明服务器的接口,并且通过operation绑定相应的消息,其中in表示参数,out表示返回值
binding:指定传递消息所用的格式
service:指定服务所发布的名称

【WebService】快速构建WebService示例