WebService——通過契約優先開發webservice

一、基本概念

有代碼優先和契約優先兩種開發webservice的方式，本例介紹契約優先的webservice。

編寫wsdl有三種方式：基于document的wrapper方式，基于document的bare方式，基于rpc方式。本例介紹wraper方式，也是預設方式和推薦方式。wrapper有包起來的意思，将所有對象通過element封裝。

二、編寫步驟

①服務端

1、編寫wsdl

<?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/hello/" xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/"

xmlns:xsd="http://www.w3.org/2001/xmlschema"

name="helloservice"

targetnamespace="http://www.example.org/hello/">

<wsdl:types>

<xsd:schema targetnamespace="http://www.example.org/hello/">

<xsd:element name="add" type="tns:add"></xsd:element>

<xsd:element name="addresponse" type="tns:addresponse"></xsd:element>

<xsd:element name="licenceinfo" type="tns:licenceinfo"></xsd:element>

<xsd:complextype name="add">

<xsd:sequence>

<xsd:element name="a" type="xsd:int"></xsd:element>

<xsd:element name="b" type="xsd:int"></xsd:element>

</xsd:sequence>

</xsd:complextype>

<xsd:complextype name="addresponse">

<xsd:element name="addresponse" type="xsd:int"></xsd:element>

<xsd:complextype name="licenceinfo">

<xsd:element name="licenceinfo" type="xsd:string"></xsd:element>

</xsd:schema>

</wsdl:types>

<wsdl:message name="add">

<wsdl:part name="add" element="tns:add"></wsdl:part>

</wsdl:message>

<wsdl:message name="addresponse">

<wsdl:part name="addresponse" element="tns:addresponse"></wsdl:part>

<wsdl:message name="licenceinfo">

<wsdl:part name="licenceinfo" element="tns:licenceinfo"></wsdl:part>

<wsdl:porttype name="ihelloservice">

<wsdl:operation name="add">

<wsdl:input message="tns:add"></wsdl:input>

<wsdl:output message="tns:addresponse"></wsdl:output>

</wsdl:operation>

</wsdl:porttype>

<wsdl:binding name="helloservicesoap" type="tns:ihelloservice">

<soap:binding style="document" transport="http://schemas.xmlsoap.org/soap/http" />

<wsdl:input>

<soap:body use="literal" />

<soap:header use="literal" part="licenceinfo" message="tns:licenceinfo"></soap:header>

</wsdl:input>

<wsdl:output>

</wsdl:output>

</wsdl:binding>

<wsdl:service name="helloservice">

<wsdl:port binding="tns:helloservicesoap" name="helloserviceport">

<soap:address location="http://localhost:8080/hello" />

</wsdl:port>

</wsdl:service>

</wsdl:definitions>

2、通過wsimport生成java檔案，将生成的java類檔案複制到項目中一般在src下建立mate-inf/wsdl兩層檔案夾，将檔案放進去。

3、删除生成的java檔案，隻保留生成的接口的.java檔案，删除該檔案中不需要的代碼。注意不要拷貝.class檔案進去，因為将來如果要在tomcat裡面部署，多餘的.class檔案會讓程式報錯。

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;

/**

 * this class was generated by the jax-ws ri.

 * jax-ws ri 2.1.1 in jdk 6

 * generated source version: 2.1

 * 

 */

@webservice(name = "hello", targetnamespace = "http://www.example.org/hello/")

public interface ihelloservice {

    @webmethod

    @webresult(name = "addresponse", targetnamespace = "")

    @requestwrapper(localname = "add", targetnamespace = "http://www.example.org/hello/", classname = "org.example.hello.add")

    @responsewrapper(localname = "addresponse", targetnamespace = "http://www.example.org/hello/", classname = "org.example.hello.addresponse")

    public int add(

        @webparam(name = "a", targetnamespace = "")

        int a,

        @webparam(name = "b", targetnamespace = "")

        int b , 

        @webparam(name="licenceinfo" , header=true) string licenceinfo);

}

4、編寫helloserviceimpl類

@webservice(endpointinterface = "org.example.hello.hello", 

servicename = "helloservice" , wsdllocation = "meta-inf/wsdl/hello.wsdl" ,  

targetnamespace = "http://www.example.org/hello/", portname="helloserviceport")

public class helloserviceimpl implements ihelloservice {

public int add(int a, int b, string licenceinfo) {

system.out.println(a+b);

system.out.println("licenceinfo:" + licenceinfo );

return a + b;

5、釋出service

import javax.xml.ws.endpoint;

import org.example.hello.helloserviceimpl;

public class servicetest {

public static void main(string[] args) {

endpoint.publish("http://localhost:8080/mywebservice", new helloserviceimpl());

②編寫用戶端

将wsimort生成的java類添加到用戶端。

1、普通方式通路（無法傳遞頭資訊，當然可以通過另外編寫handler添加頭資訊）

import java.net.url;

import javax.xml.namespace.qname;

import javax.xml.ws.service;

import org.example.hello.hello;

public class client01 {

public static void main(string[] args) throws exception{

url url = new url("http://localhost:8080/mywebservice?wsdl");

string namespace = "http://www.example.org/hello/";

qname sname = new qname(namespace, "helloservice");

service service = service.create(url, sname);

ihelloservice hello = service.getport(ihelloservice.class);

int result = hello.add(1, 100);

system.out.println(result);

// 或直接調用生成的方法(這是另一個例子，可以仿照寫)

// myserviceimplservice mis = new myserviceimplservice();

// imyservice ms = mis.getmyserviceimplport();

// system.out.println(ms.add(29, 3));

2、拼裝soapmessage方式通路 （有頭資訊）

import javax.xml.soap.messagefactory;

import javax.xml.soap.soapbody;

import javax.xml.soap.soapbodyelement;

import javax.xml.soap.soapenvelope;

import javax.xml.soap.soapheader;

import javax.xml.soap.soapmessage;

import javax.xml.ws.dispatch;

public class client02 {

* 帶header的請求

*/

qname sname = new qname(namespace , "helloservice");

qname protname = new qname(namespace, "helloserviceport");

dispatch<soapmessage> dispatch = service.createdispatch(protname,soapmessage.class, service.mode.message);

soapmessage msg = messagefactory.newinstance().createmessage() ;

soapenvelope env = msg.getsoappart().getenvelope() ;

soapbody body = env.getbody() ;

soapheader header = env.getheader() ;

if(header == null) header = env.addheader() ;

// 一定要加ns字首

qname addname = new qname(namespace , "add" , "myprefix");

// 添加body資訊

soapbodyelement bodyele = body.addbodyelement(addname); 

bodyele.addchildelement("a").setvalue("1");

bodyele.addchildelement("b").setvalue("2");

// 添加頭資訊

qname headername = new qname(namespace , "licenceinfo");

// 設定頭資訊的值

header.addheaderelement(headername).settextcontent("admin");

// 發送前将soap消息列印出來

msg.writeto(system.out);

system.out.println("----------------relult---------------");

soapmessage resultmsg = dispatch.invoke(msg);

// 将傳回的soap消息列印出來

resultmsg.writeto(system.out) ;

原帖位址：http://blog.csdn.net/is_zhoufeng/article/details/8365723

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