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webservice:
就是应用程序之间跨语言的调用
wwww.webxml.com.cn
1.xml
2. wsdl: webservice description language web服务描述语言
通过xml格式说明调用的地址方法如何调用,可以看错webservice的说明书
3.soap simple object access protoacl (简单对象访问协议)
限定了xml的格式
soap 在http(因为有请求体,所以必须是post请求)的基础上传输xml数据
请求和响应的xml 的格式如: <Envelop>
<body>
//....
</body>
</Envelop>
operation name:服务提供的方法
静态方法不能发布为外部服务
运用jkd自带的代码生成访问服务器的客户端代码 E:/wsimort -s . http://test.cm/?wsdl
我们可以把webservice看做是web服务器上的一个应用,web服务器是webservice的一个容器
函数的参数在 http://test.cm/?xsd=1
JAX-WS是指 java api for xml -WebService
//测试 WebService服务的 explorer
Web Service Explorer 可以显示返回的xml格式
targetNamespace 默认为倒置的包名
客户端调用WebService的方式:
1.通过wximport生成代码
2.通过客户端编程方式
3.通过ajax调用方式
4.通过 URL Connection 方式调用
请求过程分析:
1.使用get方式获取wsdl文件,称为握手
2.使用post发出请求
3.服务器响应成功过
几种监听工具:
http watch
Web Service explorer
eclipse 自带工具 TCP/IP Monitor
服务端代码:
package com.webservcie;
import javax.jws.WebMethod;
import javax.jws.WebParam;
import javax.jws.WebResult;
import javax.jws.WebService;
import javax.xml.ws.Endpoint;
/**
* WebService
* 将 Java 类标记为实现 Web Service,或者将 Java 接口标记为定义 Web Service 接口
*/
@WebService(serviceName="MyService",targetNamespace="http://www.baidu.com")
public class HelloService {
@WebMethod(operationName="AliassayHello")
@WebResult(name="myReturn")
public String sayHello(@WebParam(name="name") String name){
return "hello: " + name;
}
public String sayGoodbye(String name){
return "goodbye: " + name;
}
@WebMethod(exclude=true)//当前方法不被发布出去
public String sayHello2(String name){
return "hello " + name;
}
public static void main(String[] args) {
/**
* 参数1:服务的发布地址
* 参数2:服务的实现者
* Endpoint 会重新启动一个线程
*/
Endpoint.publish("http://test.cm/", new HelloService());
System.out.println("Server ready...");
}
}
1.客户端调用(wximport自动生成代码 【推荐】)
package com.wsclient;
public class App {
/**
* 通过wsimport 解析wsdl生成客户端代码调用WebService服务
*
* @param args
*
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
/**
* <service name="MyService">
* 获得服务名称
*/
MyService mywebService = new MyService();
/**
* <port name="HelloServicePort" binding="tns:HelloServicePortBinding">
*/
HelloService hs = mywebService.getHelloServicePort();
/**
* 调用方法
*/
System.out.println(hs.sayGoodbye("sjk"));
System.out.println(hs.aliassayHello("sjk"));
}
}
2.通过ajax+js+xml调用
<html>
<head>
<title>通过ajax调用WebService服务</title>
<script>
var xhr = new ActiveXObject("Microsoft.XMLHTTP");
function sendMsg(){
var name = document.getElementById(‘name‘).value;
//服务的地址
var wsUrl = ‘http://192.168.1.100:6789/hello‘;
//请求体
var soap = ‘<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:q0="http://ws.itcast.cn/" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">‘ +
‘ <soapenv:Body> <q0:sayHello><arg0>‘+name+‘</arg0> </q0:sayHello> </soapenv:Body> </soapenv:Envelope>‘;
//打开连接
xhr.open(‘POST‘,wsUrl,true);
//重新设置请求头
xhr.setRequestHeader("Content-Type","text/xml;charset=UTF-8");
//设置回调函数
xhr.onreadystatechange = _back;
//发送请求
xhr.send(soap);
}
function _back(){
if(xhr.readyState == 4){
if(xhr.status == 200){
//alert(‘调用Webservice成功了‘);
var ret = xhr.responseXML;
var msg = ret.getElementsByTagName(‘return‘)[0];
document.getElementById(‘showInfo‘).innerHTML = msg.text;
//alert(msg.text);
}
}
}
</script>
</head>
<body>
<input type="button" value="发送SOAP请求" onclick="sendMsg();">
<input type="text" id="name">
<div id="showInfo">
</div>
</body>
</html>
3.URL Connection方式
import java.io.InputStream;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.URL;
/**
* 通过UrlConnection调用Webservice服务
*
*/
public class App {
public static void main(String[] args) throws Exception {
//服务的地址
URL wsUrl = new URL("http://192.168.1.100:6789/hello");
HttpURLConnection conn = (HttpURLConnection) wsUrl.openConnection();
conn.setDoInput(true);
conn.setDoOutput(true);
conn.setRequestMethod("POST");
conn.setRequestProperty("Content-Type", "text/xml;charset=UTF-8");
OutputStream os = conn.getOutputStream();
//请求体
String soap = "<soapenv:Envelope xmlns:soapenv=\"http://schemas.xmlsoap.org/soap/envelope/\" xmlns:q0=\"http://ws.itcast.cn/\" xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\" xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\">" +
"<soapenv:Body> <q0:sayHello><arg0>aaa</arg0> </q0:sayHello> </soapenv:Body> </soapenv:Envelope>";
os.write(soap.getBytes());
InputStream is = conn.getInputStream();
byte[] b = new byte[1024];
int len = 0;
String s = "";
while((len = is.read(b)) != -1){
String ss = new String(b,0,len,"UTF-8");
s += ss;
}
System.out.println(s);
is.close();
os.close();
conn.disconnect();
}
}
4.客户单编程方式(和第一种方式一样)
//文件名:HelloService.java
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 2.1.6 in JDK 6
* Generated source version: 2.1
*
*/
@WebService(name = "HelloService", targetNamespace = "http://ws.itcast.cn/")
@XmlSeeAlso({
})
public interface HelloService {
/**
*
* @param arg0
* @return
* returns java.lang.String
*/
@WebMethod
@WebResult(targetNamespace = "")
@RequestWrapper(localName = "sayHello", targetNamespace = "http://ws.itcast.cn/", className = "cn.itcast.ws.client.SayHello")
@ResponseWrapper(localName = "sayHelloResponse", targetNamespace = "http://ws.itcast.cn/", className = "cn.itcast.ws.client.SayHelloResponse")
public String sayHello(
@WebParam(name = "arg0", targetNamespace = "")
String arg0);
}
import java.net.MalformedURLException;
import java.net.URL;
import javax.xml.namespace.QName;
import javax.xml.ws.Service;
import cn.itcast.ws.wsimport.HelloService;
/**
* 通过客户端编程的方式调用Webservice服务
*
*/
public class App {
public static void main(String[] args) throws Exception {
URL wsdlUrl = new URL("http://192.168.1.100:6789/hello?wsdl");
Service s = Service.create(wsdlUrl, new QName("http://ws.itcast.cn/","HelloServiceService"));
HelloService hs = s.getPort(new QName("http://ws.itcast.cn/","HelloServicePort"), HelloService.class);
String ret = hs.sayHello("zhangsan");
System.out.println(ret);
}
}
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原文地址:http://www.cnblogs.com/firstdream/p/5126473.html