四、使用Axis2传递简单Java对象（POJO）

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本文介绍如何使用Axis2在Web Service中传递Java对象。<o:p></o:p>

author: ZJ <st1:chsdate year="2007" month="5" day="7" islunardate="False" isrocdate="False" w:st="on">07-5-7</st1:chsdate>

Blog: http://zhangjunhd.blog.51cto.com/

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在Axis2_1.2版本中提供了传递Java对象的功能（注：只有1.1/1.2版本提供，更早的Axis2版本没有此功能）。此项功能称为传输POJO(a Plain Old Java Object)

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1.引入一个简单的POJO- The Weather POJO<o:p></o:p>

Weather.java<o:p></o:p>

package sample.pojo.data;

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public class Weather {

float temperature;

String forecast;

boolean rain;

float howMuchRain;

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public void setTemperature(float temp) {

temperature = temp;

}

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public float getTemperature() {

return temperature;

}

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public void setForecast(String fore) {

forecast = fore;

}

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public String getForecast() {

return forecast;

}

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public void setRain(boolean r) {

rain = r;

}

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public boolean getRain() {

return rain;

}

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public void setHowMuchRain(float howMuch) {

howMuchRain = howMuch;

}

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public float getHowMuchRain() {

return howMuchRain;

}

}

Note that it's all just straight POJOs with field items and getter and setter methods for each field.<o:p></o:p>

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2.基于此POJO的service<o:p></o:p>

WeatherService.java<o:p></o:p>

package sample.pojo.service;

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import sample.pojo.data.Weather;

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public class WeatherService{

Weather weather;

public void setWeather(Weather weather){

this.weather = weather;

}

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public Weather getWeather(){

return this.weather;

}

}

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3.相应的services.xml<o:p></o:p>

<service scope="application" name="WeatherService"></service>

<description>Weather POJO Service</description>

<messagereceivers></messagereceivers>

<messagereceiver></messagereceiver>

mep="http://www.w3.org/2004/08/wsdl/in-only"

class="org.apache.axis2.rpc.receivers.RPCInOnlyMessageReceiver"/>

<messagereceiver></messagereceiver>

mep="http://www.w3.org/2004/08/wsdl/in-out"

class="org.apache.axis2.rpc.receivers.RPCMessageReceiver"/>

<parameter name="ServiceClass"></parameter>

sample.pojo.service.WeatherService

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4.打包与部署<o:p></o:p>

将文件组织成：

- WeatherService<o:p></o:p>

- META-INF<o:p></o:p>

- services.xml<o:p></o:p>

- sample<o:p></o:p>

- pojo<o:p></o:p>

- data<o:p></o:p>

- Weather.class<o:p></o:p>

- service<o:p></o:p>

- WeatherService.class

将其打包为WeatherService.aar，并部署在Tomcat上（详见 基于Tomcat5.0和Axis2开发Web Service应用实例 ）。

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5．测试<o:p></o:p>

WeatherRPCClient.java<o:p></o:p>

package sample.pojo.rpcclient;

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import javax.xml.namespace.QName;

import org.apache.axis2.AxisFault;

import org.apache.axis2.addressing.EndpointReference;

import org.apache.axis2.client.Options;<o:p></o:p>

import org.apache.axis2.rpc.client.RPCServiceClient;

import sample.pojo.data.Weather;

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public class WeatherRPCClient {

public static void main(String[] args1) throws AxisFault {

RPCServiceClient serviceClient = new RPCServiceClient();

Options options = serviceClient.getOptions();

EndpointReference targetEPR = new EndpointReference(

"http://localhost:8080/axis2/services/WeatherService");

options.setTo(targetEPR);

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// Setting the weather

QName opSetWeather = new QName("http://service.pojo.sample/xsd",

"setWeather");

Weather w = new Weather();

w.setTemperature((float) 39.3);

w.setForecast("Cloudy with showers");

w.setRain(true);

w.setHowMuchRain((float) 4.5);

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Object[] opSetWeatherArgs = new Object[] { w };

serviceClient.invokeRobust(opSetWeather, opSetWeatherArgs);

serviceClient.invokeRobust(opSetWeather, opSetWeatherArgs);

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// Getting the weather

QName opGetWeather = new QName("http://service.pojo.sample/xsd",

"getWeather");

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Object[] opGetWeatherArgs = new Object[] {};

Class[] returnTypes = new Class[] { Weather.class };

Object[] response = serviceClient.invokeBlocking(opGetWeather,

opGetWeatherArgs, returnTypes);

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Weather result = (Weather) response[0];

if (result == null) {

System.out.println("Weather didn't initialize!");

return;

}

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// Displaying the result

System.out.println("Temperature : "

+ result.getTemperature());

System.out.println("Forecast : "

+ result.getForecast());

System.out.println("Rain : " + result.getRain());

System.out.println("How much rain (in inches) : "

+ result.getHowMuchRain());

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}

}

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6．结果<o:p></o:p>

Temperature : 39.3

Forecast : Cloudy with showers

Rain : true

How much rain (in inches) : 4.5

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