上一篇寫了個最簡單的小例子，只是為了說明JAVA6開發Web Service很方便，這一篇稍微深入一點，寫個稍微有點代表性的小例子。
依然使用 JAX-WS（jdk自帶的實現）方式，這次要在服務中使用一個復雜類型Customer，并實現附件傳輸的功能，這里使用MTOM的附件傳輸方式。MTOM（SOAP Message Transmission Optimization Mechanism）是SOAP 消息傳輸優化機制，MTOM可以在SOAP 消息中發送二進制數據。
先來看Customer類：
package org.duke.jaxws.server;
import java.util.Date;
import javax.activation.DataHandler;
import javax.xml.bind.annotation.XmlAccessType;
import javax.xml.bind.annotation.XmlAccessorType;
import javax.xml.bind.annotation.XmlMimeType;
import javax.xml.bind.annotation.XmlRootElement;
@XmlRootElement(name = "Customer")
@XmlAccessorType(XmlAccessType.FIELD)
public class Customer {
private long id;
private String name;
private Date birthday;
@XmlMimeType("application/octet-stream")
private DataHandler imageData;
public long getId() {
return id;
}
public void setId(long id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Date getBirthday() {
return birthday;
}
public void setBirthday(Date birthday) {
this.birthday = birthday;
}
public DataHandler getImageData() {
return imageData;
}
public void setImageData(DataHandler imageData) {
this.imageData = imageData;
}
}
MTOM 方式中要傳輸的附件必須使用javax.activation.DataHandler 類，還要注意必須在類上使用@XmlAccessorType(FIELD)注解，標注JAXB 在進行JAVA 對象與XML 之間進行轉換時只關注字段，而不關注屬性（getXXX()方法），否則發布Web 服務時會報出現了兩個imageData 屬性的錯誤，原因未知，可能是BUG。
然后使用@XmlMimeType 注解標注這是一個附件類型的數據，這里我們標注imageData 是一個二進制文件，當然你也可以使用具體的MIME類型，譬如：image/jpg、image/gif 等，但要考慮到客戶端是否支持。
接口類：
package org.duke.jaxws.server;
import javax.jws.WebParam;
import javax.jws.WebService;
import javax.jws.soap.SOAPBinding;
import javax.xml.ws.soap.MTOM;
@WebService(name = "Hello")
@SOAPBinding(style = SOAPBinding.Style.RPC)
@MTOM
public interface Hello {
public void printContext();
public Customer selectCustomerByName(
@WebParam(name = "customer") Customer customer);
public Customer selectMaxAgeCustomer(Customer c1, Customer c2);
}
@MTOM注解用于開啟MTOM功能。
@WebService注解中的name屬性標注在接口類上，可以指定wsdl中接口名稱，也就是生成的客戶端代碼中接口類的名字。
@SOAPBinding(style = SOAPBinding.Style.RPC)指定SOAP消息樣式，有兩個枚舉值：SOAPBinding.Style.DOCUMENT（默認）和 SOAPBinding.Style.RPC，可以對比這兩種方式生成的wsdl會有所不同，而且生成的客戶端代碼也會有所不同。
實現類：
package org.duke.jaxws.server;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Set;
import javax.activation.DataHandler;
import javax.activation.FileDataSource;
import javax.annotation.Resource;
import javax.jws.WebService;
import javax.xml.ws.WebServiceContext;
import javax.xml.ws.handler.MessageContext;
@WebService(serviceName = "Hello", portName = "HelloPort", targetNamespace = "http://server.jaxws.duke.org/", endpointInterface = "org.duke.jaxws.server.Hello")
public class HelloImpl implements Hello {
@Resource
private WebServiceContext context;
@Override
public void printContext() {
MessageContext ctx = context.getMessageContext();
Set<String> set = ctx.keySet();
for (String key : set) {
System.out.println("{" + key + "," + ctx.get(key) + "}");
try {
System.out.println("key.scope=" + ctx.getScope(key));
} catch (Exception e) {
System.out.println(key + " is not exits");
}
}
}
@Override
public Customer selectCustomerByName(Customer customer) {
if ("duke".equals(customer.getName())) {
customer.setId(1);
try {
customer.setBirthday(new SimpleDateFormat("yyyy-MM-dd")
.parse("1985-03-14"));
} catch (ParseException e) {
e.printStackTrace();
}
customer.setImageData(new DataHandler(new FileDataSource(new File(
"c:" + File.separator + "duke.jpg"))));
} else {
customer.setId(2);
customer.setBirthday(new Date());
customer.setImageData(new DataHandler(new FileDataSource(new File(
"c:" + File.separator + "origin.jpg"))));
}
return customer;
}
@Override
public Customer selectMaxAgeCustomer(Customer c1, Customer c2) {
try {
// 輸出接收到的附件
System.out.println("c1.getImageData().getContentType()="
+ c1.getImageData().getContentType());
InputStream is = c2.getImageData().getInputStream();
OutputStream os = new FileOutputStream("c:\\temp1.jpg");
byte[] bytes = new byte[1024];
int c;
while ((c = is.read(bytes)) != -1) {
os.write(bytes, 0, c);
}
os.close();
System.out.println("c2.getImageData().getContentType()="
+ c2.getImageData().getContentType());
is = c2.getImageData().getInputStream();
os = new FileOutputStream("c:\\temp2.jpg");
bytes = new byte[1024];
while ((c = is.read(bytes)) != -1) {
os.write(bytes, 0, c);
}
os.close();
} catch (IOException e) {
e.printStackTrace();
}
if (c1.getBirthday().getTime() > c2.getBirthday().getTime()) {
return c2;
} else {
return c1;
}
}
}
@WebService注解的serviceName屬性指定wsdl中service節點的name屬性值。portName屬性指定wsdl中 service節點下port節點name屬性值。targetNamespace屬性指定wsdl根節點definitions的 targetNamespace屬性值。endpointInterface屬性指定要發布的WebService接口的全路徑名，當實現類實現了多個接 口時，需要通過此屬性標注哪個類是WebService的服務端點接口（SEI）。
在這個類中，通過@Resource注解注入了一個WebServiceContext對象，這個對象即是WebService的上下文環境。
發布這個服務：
package org.duke.jaxws.server;
import javax.xml.ws.Endpoint;
public class SoapServer {
public static void main(String[] args) {
Endpoint.publish("http://localhost:8080/Service/Hello", new HelloImpl());
}
}
在命令行鍵入“wsimport -s src -p org.duke.jaxws.client -keep http://localhost:8080/Service/Hello?wsdl”生成客戶端代碼，拷貝到工程相應文件夾里，這時，就可以調用這個服務了：
package org.duke.jaxws.test;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.MalformedURLException;
import java.net.URL;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.GregorianCalendar;
import javax.activation.DataHandler;
import javax.activation.DataSource;
import javax.activation.FileDataSource;
import javax.xml.datatype.DatatypeConfigurationException;
import javax.xml.datatype.DatatypeFactory;
import javax.xml.namespace.QName;
import org.duke.jaxws.client.Customer;
import org.duke.jaxws.client.Hello;
import org.duke.jaxws.client.Hello_Service;
public class SoapClient {
public static void main(String[] args) throws ParseException,
MalformedURLException {
QName qName = new QName("http://server.jaxws.duke.org/", "Hello");
Hello_Service helloService = new Hello_Service(new URL(
"http://localhost:8080/Service/Hello?wsdl"), qName);
Hello hello = (Hello) helloService.getPort(Hello.class);
hello.printContext();
System.out.println("########################################");
Customer customer = new Customer();
customer.setName("duke");
DataSource ds = hello.selectCustomerByName(customer).getImageData()
.getDataSource();
String attachmentMimeType = ds.getContentType();
System.out.println(attachmentMimeType);
try {
InputStream is = ds.getInputStream();
OutputStream os = new FileOutputStream(
"c:\\Shawn\\duke-real_temp.jpg");
byte[] bytes = new byte[1024];
int c;
while ((c = is.read(bytes)) != -1) {
os.write(bytes, 0, c);
}
} catch (IOException e) {
e.printStackTrace();
}
System.out.println("########################################");
Customer c1 = new Customer();
c1.setId(1);
c1.setName("duke");
GregorianCalendar calendar = (GregorianCalendar) GregorianCalendar
.getInstance();
calendar.setTime(new SimpleDateFormat("yyyy-MM-dd").parse("1985-03-14"));
try {
c1.setBirthday(DatatypeFactory.newInstance()
.newXMLGregorianCalendar(calendar));
} catch (DatatypeConfigurationException e) {
e.printStackTrace();
}
c1.setImageData(new DataHandler(new FileDataSource(
"c:\\Shawn\\duke1.jpg")));
Customer c2 = new Customer();
c2.setId(2);
c2.setName("abc");
calendar.setTime(new SimpleDateFormat("yyyy-MM-dd").parse("1986-03-14"));
try {
c2.setBirthday(DatatypeFactory.newInstance()
.newXMLGregorianCalendar(calendar));
} catch (DatatypeConfigurationException e) {
e.printStackTrace();
}
c2.setImageData(new DataHandler(new FileDataSource(
"c:\\Shawn\\duke-real_temp.jpg")));
Customer c = hello.selectMaxAgeCustomer(c1, c2);
System.out.println(c.getName());
}
}
posted on 2012-06-27 14:06
ゞ沉默是金ゞ 閱讀(1275)
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