本文主要描述了android客户端与PC服务器端，利用webservice和ksoap2插件进行网络通信的传递实体类的方法。网上有好多文章都描述了将android客户端的自定义实体类作为参数传递给webservice中方法的步骤，能够正常的运行。但是当android客户端接收自定义类型时，却不能强制类型转换为自定义类型（附注：好像用dotNet实现的webservice可以，但是用JAX-WS的不行）。本文自定义了一个parseToObject方法，来处理该问题，并以此为基础，处理了自定义类型List的返回值。
首先在服务端创建自定义类Person，详细代码如下：
public class Person {
private String name;
private Integer age;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Integer getAge() {
return age;
}
public void setAge(Integer age) {
this.age = age;
}
} |
然后创建服务的接口和实现方法，详细代码如下：
public interface HelloWorldService {
public List<Person> sayHelloOne(Person person);
public Person sayHelloTwo(Person person);
public Boolean sayHelloThree(Boolean isRight);
public Date sayHelloFour(Date date);
} |
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import javax.ejb.Remote;
import javax.ejb.Stateless;
import javax.jws.WebMethod;
import javax.jws.WebService;
@Stateless
@Remote(HelloWorldService.class)
@WebService(name = "HelloWorldService",serviceName = "HelloWorldServiceImpl",?
targetNamespace = "http://cn.edu.nju.software",portName = "HelloWorldPort")
public class HelloWorldServiceImpl implements HelloWorldService {
@WebMethod(exclude = true)
public String getHelloWorld(String content){
return "Hello World: "+content;
}
@Override
public List<Person> sayHelloOne(Person person) {
// TODO Auto-generated method stub
Person personA = new Person();
personA.setName(person.getName()+"Hello");
personA.setAge(person.getAge()+4);
List<Person> list = new ArrayList<Person>();
list.add(person);
list.add(personA);
return list;
}
@Override
public Person sayHelloTwo(Person person) {
// TODO Auto-generated method stub
Person personA = new Person();
personA.setName(person.getName()+"Hello");
personA.setAge(person.getAge()+4);
return personA;
}
@Override
public Boolean sayHelloThree(Boolean isRight) {
// TODO Auto-generated method stub
if(isRight){
return false;
}
return true;
}
@Override
public Date sayHelloFour(Date date) {
// TODO Auto-generated method stub
System.out.println(date.toString());
return new Date(0);
}
} |
标记好注释之后，利用myeclipse自带的工具生成webservice以及wsdl文件。
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在客户端创建自定义实体类Person，属性（名称，类型）都要和服务端的相同，该实体类还需要实现KvmSerializable接口，以便顺利地将其传输给JAX-WS服务端的webservice，详细代码如下：
import java.util.Hashtable;
import org.ksoap2.serialization.KvmSerializable;
import org.ksoap2.serialization.PropertyInfo;
public class Person implements KvmSerializable{
private String name;
private Integer age;
public Person(){
}
public Person(String name,Integer age){
this.name = name;
this.age = age;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Integer getAge() {
return age;
}
public void setAge(Integer age) {
this.age = age;
}
@Override
public Object getProperty(int arg0) {
// TODO Auto-generated method stub
switch(arg0){
case 0:
return name;
case 1:
return age;
}
return null;
}
@Override
public int getPropertyCount() {
// TODO Auto-generated method stub
return 2;
}
@Override
public void getPropertyInfo(int index,Hashtable arg1,PropertyInfo info) {
// TODO Auto-generated method stub
?switch(index)
?? ? ? ?{
?? ? ? ?case 0:
?? ? ? ? info.type = PropertyInfo.STRING_CLASS;
?? ? ? ? ? ?info.name = "name";
?? ? ? ? ? ?break;
?? ? ? ?case 1:
?? ? ? ? info.type = PropertyInfo.INTEGER_CLASS;
?? ? ? ? ? ?info.name = "age";
?? ? ? ? ? ?break;
?? ? ? ?default:
?? ? ? ? break;
?? ? ? ?}
}
@Override
public void setProperty(int index,Object value) {
// TODO Auto-generated method stub
switch(index)
? ? ? ? {
? ? ? ? case 0:
? ? ? ? ? ? name = value.toString();
? ? ? ? ? ? break;
? ? ? ? case 1:
? ? ? ? ? ? age = Integer.parseInt(value.toString());
? ? ? ? ? ? break;
? ? ? ? default:
? ? ? ?? break;
? ? ? ? }
}
} |
接下来是android端利用ksoap2与webservice进行通信的详细介绍（最主要的部分），先贴上详细代码：
//首先创建自定义对象并包装到PropertyInfo 中；也可以直接被request.addProperty，注意第一个设置参数名的参数内容
必须和服务端方法的wsdl中参数名相同，这里是arg0
Person person = new Person();
person.setName("Android;Android:Android");
person.setAge(7);
PropertyInfo pi = new PropertyInfo ();
pi.setType(Person.class);
pi.setValue(person);
pi.setName("arg0"); //必须和服务端方法的wsdl中参数名相同
String wsdl = "http://IPAddress:8080/HelloWorldService/HelloWorldServiceImplPort?wsdl";
String namespace = "http://software.nju.edu.cn/";
String webmethod = "sayHelloOne";
String soapAction = namespace+webmethod;
SoapObject request = new SoapObject(namespace,webmethod);
request.addProperty(pi);
SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapEnvelope.VER11);
envelope.dotNet = false; //由于不是用dotNet做服务端，需设置为false。
envelope.setOutputSoapObject(request);
envelope.addMapping(namespace,"Person",Person.class);
//ksoap2传递自定义类型对象的属性中如果有除了Boolean、Integer和String以外类型的属性时，需要在envelope中注册相应的Marshal
//Marshal dateMarshal = new MarshalDate();
//dateMarshal.register(envelope);
HttpTransportSE ht = new HttpTransportSE(wsdl);
String response = "";
//设置为true，方便之后读取信息，如?ht.requestDump和ht.responseDump
ht.debug = true;
try {
ht.call(soapAction,envelope);
if(envelope.getResponse()!=null){
List<Person> list = new ArrayList<Person>();
SoapObject rpsObject = (SoapObject) envelope.bodyIn;
int numOfList = rpsObject.getPropertyCount();
for(int i=0;i<numOfList;i++){
SoapObject tmpSoapObject = (SoapObject)rpsObject.getProperty(i);
list.add((Person)CastObject.parseToObject(tmpSoapObject,Person.class));
}
for(Person obj:list){
response += "name: "+obj.getName()+" age: "+obj.getAge()+"n";
}
}catch (IOException e){
// TODO Auto-generated catch block
response += e.getMessage();
} catch (XmlPullParserException e){
// TODO Auto-generated catch block
response += e.getMessage();
}catch (Exception e){
// TODO Auto-generated catch block
response += e.getMessage();
}
response += "nRequest: ";
response += ht.requestDump;
response += "nResponse: ";
response += ht.responseDump; |
自定义方法parseToObject，详细代码如下：
public class CastObject {
public static KvmSerializable parseToObject(SoapObject soapObject,Class objectClass) throws IllegalAccessException,InstantiationException{
KvmSerializable result = (KvmSerializable) objectClass.newInstance();
int numOfAttr = result.getPropertyCount();
for(int i=0; i<numOfAttr; i++){
PropertyInfo info = new PropertyInfo();
result.getPropertyInfo(i,null,info);
//处理property不存在的情况
try{
result.setProperty(i,soapObject.getProperty(info.name));
}catch(Exception e){
continue;
}
}
return result;
}
} |
在经过多次试验之后还发现了envelope.getResponse()和envelope.bodyIn的区别，请读者注意：
envelope.getResponse()是取单条记录；当遇到多条记录时，用envelope.bodyIn，然后用(SoapObject)object.getProperty(i) 取每条记录。
