带附件的soap消息api,其内容很丰富,它是一个允许用soap消息而不是用jax-rpc来调用web service的API .它通过直接创建XML消息来完成web serivce的调用.SOAP API 简化了创建XML的工作. 取自j2ee文档的soap消息的结构图.
完整的SAAJ客户端程序. 服务器端的程序在j2ee web service开发(一) 里可以找到.没有详细介绍saaj的一些类
的使用.好在它们都有很好的自解释性.
package array;
import javax.xml.soap.*;
import java.net.*;
import java.io.*;
import java.util.*;
import java.text.SimpleDateFormat;
public class SaajClient {
public SaajClient() {
}
public static void main(String[] args) throws Exception {
SaajClient client = new SaajClient();
User[] user = new User[2];
user[0] = new User("张三", "027-88888888", new Date());
user[1] = new User("lisi", null, new Date());
saajTest(user);
}
private static void saajTest(User[] user) throws MalformedURLException,
IOException,
UnsupportedOperationException, SOAPException {
MessageFactory factory = MessageFactory.newInstance();//SAAJ的根工厂类
SOAPMessage message = factory.createMessage();
//SOAPMessage 对象需要一些元素，包括SOAPPart,SOAPEnvelope,SOAPHeader,SOAPBody对象
//SAAJ通过返回一个新的已经包括这些元素的SOAPMessage对象来简化操作
SOAPFactory s = SOAPFactory.newInstance();//通用工厂类，创建Name，SOAPElement对象
Name countUser = s.createName("countUser", "mh", "http://array");
//Name对象表示一个XML限定名称
Name arrayOfUser_1 = s.createName("arrayOfUser_1");
Name xsi = s.createName("xmlns:xsi");
Name nullAttribute = s.createName("xsi:nil");
//下面的代码创建soap对象
SOAPBody body = message.getSOAPBody();
SOAPBodyElement bodyChildElement = body.addBodyElement(countUser);
SOAPElement arrayOfUser = bodyChildElement.addChildElement(
arrayOfUser_1);
// arrayOfUser.addAttribute(xsi, "http://www.w3.org/2001/XMLSchema-instance");
arrayOfUser.addNamespaceDeclaration("xsi","http://www.w3.org/2001/XMLSchema-instance");
//定义arrayOfUser的 xmlns:xsi属性 该名称空间是XML模式实例命名空间，由XML模式规范定义，它定义了
//可以在XML文档中使用的属于该命名空间的一些特性.
for (int i = 0; i < user.length; i++) {
//需要注意顺序，也就是和复杂类型的sequence元素的顺序对应
Name valueName = s.createName("value");
SOAPElement value = arrayOfUser.addChildElement(valueName);
Name birthday = s.createName("birthDay");
SOAPElement birthdayElement = value.addChildElement(birthday);
if (user[i].getBirthDay() == null) {
birthdayElement.addAttribute(nullAttribute, "1");
} else {
//日期类型必须进行格式化
SimpleDateFormat format= new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss");
birthdayElement.addTextNode(format.format(user[i].getBirthDay()));
}
Name name = s.createName("name");
SOAPElement nameElement = value.addChildElement(name);
if (user[i].getName() == null) {
//传送空值
nameElement.addAttribute(nullAttribute, "1");
} else {
nameElement.addTextNode(user[i].getName());
}
Name phone = s.createName("phone");
SOAPElement phoneElement = value.addChildElement(phone);
if (user[i].getPhone() == null) {
phoneElement.addAttribute(nullAttribute, "1");
} else {
phoneElement.addTextNode(user[i].getPhone());
}
}
//发送soap消息
SOAPConnectionFactory f = SOAPConnectionFactory.newInstance();
SOAPConnection conn = f.createConnection();
URL url = new URL("http://localhost:8082/complexType-array/services/CountUser");
SOAPMessage response = conn.call(message, url);
SOAPBody soapBody = response.getSOAPBody();
Iterator it = soapBody.getChildElements();
while (it.hasNext()) {
SOAPBodyElement bodyElement = (SOAPBodyElement) it.next();
String returnValue = bodyElement.getValue();
System.out.println(bodyElement.getElementName().getLocalName() +
" " + returnValue);
}
response.writeTo(System.out);
}
}
程序向服务器端传送的数据:
POST /complexType-array/services/CountUser HTTP/1.1
SOAPAction: ""
Content-Type: text/xml; charset=UTF-8
User-Agent: Java/1.5.0_03
Host: localhost:8082
Accept: text/html, image/gif, image/jpeg, *; q=.2, */*; q=.2
Connection: keep-alive
Content-Length: 448
<env:Envelope xmlns:env='http://schemas.xmlsoap.org/soap/envelope/'>
<env:Header/>
<env:Body>
<mh:countUser xmlns:mh='http://array'>
<arrayOfUser_1 xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance'>
<value>
<birthDay>2006-11-08T22:36:13</birthDay>
<name>张三</name>
<phone>027-88888888</phone>
</value>
<value>
<birthDay>2006-11-08T22:36:13</birthDay>
<name>lisi</name>
<phone xsi:nil='1'/>
</value>
</arrayOfUser_1>
</mh:countUser>
</env:Body></env:Envelope>
从传送的数据来看,就是一个符合soap规范的xml文档.既然是xml文档,也就是说可以用jdom api 来操作它
事实上就是这样,soap api 可以跟 jdom api混合使用.
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