基于契约优先来编写webservice

开发流程：
1.先写schema或者wsdl文件
2.根据这个文件生成客户端代码
3.编写实现类（在实现类上指定wsdlLocation）
4.发布服务



src下创建META-INF目录，再该目录下创建wsdl文件夹，使用向导创建一个wsdl文件
一、编写type
二、编写Message
三、编写portType
四、编写bingding
五、编写service

<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<wsdl:definitions xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/" 
					xmlns:tns="http://www.example.org/my/" 
					xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/" 
					xmlns:xsd="http://www.w3.org/2001/XMLSchema" 
					name="myServiceImplService" targetNamespace="http://www.example.org/my/">
<!-- TYPE -->			
  <wsdl:types>
  	<!-- 定义schema，通过tns引用该schema中的元素 -->
    <xsd:schema targetNamespace="http://www.example.org/my/">
      <xsd:element name="add" type="tns:addType"/>
      <xsd:element name="addResponse" type="tns:addResponseType"/>
	  
	  <xsd:complexType name="addType">
	  	<xsd:sequence>
	  		<xsd:element name="a" type="xsd:int"/>
	  		<xsd:element name="b" type="xsd:int"/>
	  	</xsd:sequence>
	  </xsd:complexType>
	  
	  <xsd:complexType name="addResponseType">
	  	<xsd:sequence>
	  		<xsd:element name="addResult" type="xsd:int"/>
	  	</xsd:sequence>
	  </xsd:complexType>	  	 
	  
    </xsd:schema>
  </wsdl:types>
  
<!-- MESSAGE -->  
  <wsdl:message name="add">
    <wsdl:part element="tns:add" name="parameters"/>
  </wsdl:message>
  <wsdl:message name="addResponse">
    <wsdl:part element="tns:addResponse" name="parameters"/>
  </wsdl:message>
  
<!-- PORTTYPE 指定接口和方法 -->  
  <wsdl:portType name="IMyservice">
    <wsdl:operation name="add">
      <wsdl:input message="tns:add"/>
      <wsdl:output message="tns:addResponse"/>
    </wsdl:operation>
  </wsdl:portType>
  
<!-- BINDING 指定编码方式 -->  
  <wsdl:binding name="MyServiceImplPortBinding" type="tns:IMyservice">
    <soap:binding style="document" transport="http://schemas.xmlsoap.org/soap/http"/>
    <wsdl:operation name="add">
      <wsdl:input>
        <soap:body use="literal"/>
      </wsdl:input>
      <wsdl:output>
        <soap:body use="literal"/>
      </wsdl:output>
    </wsdl:operation>
  </wsdl:binding>
  
 <!-- 
 	SERVICE服务
  	注意：service name必须与wsdl definition中的name一致
  --> 
  <wsdl:service name="MyServiceImplService">
    <wsdl:port binding="tns:MyServiceImplPortBinding" name="MyServiceImplPort">
      <!-- 指定服务发布的地址 -->
      <soap:address location="http://localhost:7777/ms"/>
    </wsdl:port>
  </wsdl:service>
  
</wsdl:definitions>
  

使用wsimport将wsdl转换为java代码
只保留IMyservice接口(利用接口以及定义好的注解-对参数的映射配置)，其它都删除(因为服务端不用那些java文件)
编写IMyservice的实现类

wsimport -d E:\technology-hqh\proj\webservice\JAX-WS\wsimport_03 -keep my.wsdl

package org.example.my;

import javax.jws.WebMethod;
import javax.jws.WebParam;
import javax.jws.WebResult;
import javax.jws.WebService;
import javax.xml.bind.annotation.XmlSeeAlso;
import javax.xml.ws.RequestWrapper;
import javax.xml.ws.ResponseWrapper;
/**
 * 接口
 */

/**
 * This class was generated by the JAX-WS RI.
 * JAX-WS RI 2.1.6 in JDK 6
 * Generated source version: 2.1
 * 
 */
@WebService(name = "IMyservice", targetNamespace = "http://www.example.org/my/")
public interface IMyservice {


    /**
     * 
     * @param b
     * @param a
     * @return
     *     returns int
     */
    @WebMethod
    @WebResult(name = "addResult", targetNamespace = "")
    @RequestWrapper(localName = "add", targetNamespace = "http://www.example.org/my/", className = "org.example.my.AddType")
    @ResponseWrapper(localName = "addResponse", targetNamespace = "http://www.example.org/my/", className = "org.example.my.AddResponseType")
    public int add(
        @WebParam(name = "a", targetNamespace = "")
        int a,
        @WebParam(name = "b", targetNamespace = "")
        int b);

}

package org.example.my;

import javax.jws.WebService;
/**
 * 实现类
 * 指定wsdlLocation="META-INF/wsdl/my.wsdl"，使用本地以及编写好的wsdl文件
 */
@WebService(endpointInterface="org.example.my.IMyservice",
			targetNamespace = "http://www.example.org/my/",
			wsdlLocation="META-INF/wsdl/my.wsdl")
public class MyServiceImpl implements IMyservice {

	@Override
	public int add(int a, int b) {
		System.out.println("MyServiceImpl.add()");
		return a+b;
	}

}

开启服务端的服务

package org.example.my;

import javax.xml.ws.Endpoint;

public class MyServer {
	public static void main(String[] args) {
		String address = "http://localhost:7777/ms";
		IMyservice implementor = new MyServiceImpl();
		Endpoint.publish(address, implementor);
	}

}

客户端通过wsimport将发布的wsdl文件转换为本地的代码

wsimport -d E:\technology-hqh\proj\webservice\JAX-WS\wsimport_03 -keep http://localhost:7777/ms?wsdl

客户端调用服务

package org.example.my.test;

import static org.junit.Assert.*;

import org.example.my.IMyservice;
import org.example.my.MyServiceImplService;


public class Test {

	@org.junit.Test
	public void test() {
		MyServiceImplService serviceImpl = new MyServiceImplService();
		IMyservice service = serviceImpl.getMyServiceImplPort();
		int result = service.add(1, 2);
		System.out.println(result);
	}

}

服务端发布新的wsdl，客户端必须根据wsdl更新本地代码