我正在編寫Apache CXF Web服務並使用Spring加載我的bean。我唯一的bean從Java調用外部進程(MATLAB)。我的豆定義看起來如下:我MatlabEngine豆加載多次的Spring beans
<bean id="matlabEngine" class="org.burch.pca.matlab.MatlabEngine"
init-method="start" scope="singleton">
<constructor-arg value="${matlab.engine.path}"></constructor-arg>
</bean>
<bean
class="org.springframework.web.context.support.ServletContextPropertyPlaceholderConfigurer">
<property name="systemPropertiesModeName" value="SYSTEM_PROPERTIES_MODE_OVERRIDE" />
<property name="searchContextAttributes" value="true" />
<property name="contextOverride" value="true" />
<property name="ignoreResourceNotFound" value="true" />
<property name="locations">
<list>
<value>classpath:/pca-engine.properties</value>
</list>
</property>
</bean>
件,如下是:
/**
* Path to MATLAB engine.
*/
private String pathToEngine;
public MatlabEngine(String pathToEngine) throws MatlabConnectionException, MatlabInvocationException{
super();
setPathToEngine(pathToEngine);
}
/**
* Starts engine and goes to path defined by argument
* @param pathToEngine
* @throws MatlabConnectionException
* @throws MatlabInvocationException
*/
public void start() throws MatlabConnectionException, MatlabInvocationException{
//Create a factory
RemoteMatlabProxyFactory factory = new RemoteMatlabProxyFactory();
//Get a proxy, launching MATLAB in the process
proxy = factory.getProxy();
//Display welcoming messages in MATLAB Command Window
proxy.eval(MatlabCommandsRegistry.disp(MATLAB_ENGINE_WELCOME_1));
proxy.eval(MatlabCommandsRegistry.disp(MATLAB_ENGINE_WELCOME_2));
if(pathToEngine!= null && !"".equals(pathToEngine)){
logM("Switching to engine directory...");
String goToEngineRootDir = MatlabCommandsRegistry.cd(pathToEngine);
proxy.eval(goToEngineRootDir);
logM("Sucessfully changed engine dir to "+pathToEngine);
}
}
當我部署的Tomcat Web服務,它很好地帶來了MATLAB程序(豆被加載)。
但是,當我創建客戶端請求的Web服務端點使用此代碼:
public static void main(String args[]) throws Exception {
JaxWsProxyFactoryBean factory = new JaxWsProxyFactoryBean();
factory.getInInterceptors().add(new LoggingInInterceptor());
factory.getOutInterceptors().add(new LoggingOutInterceptor());
factory.setServiceClass(UploadService.class);
factory.setAddress("http://localhost:8080/auth-ws-1.0.0/services/upload");
UploadService client = (UploadService) factory.create();
UploadEntity resume=new UploadEntity();
resume.setFileName("Image490");
resume.setFileType("jpg");
//Work arround data handler....
DataSource source = new FileDataSource(new File("C:\\Users\\Pictures\\thumb.png"));
DataHandler dataHandle = new DataHandler(source);
ByteArrayOutputStream stream = new ByteArrayOutputStream();
dataHandle.writeTo(stream);
resume.setPayload(stream.toByteArray());
client.uploadFile(resume);
System.exit(0);
}
我的服務器,帶出MATLAB程序的新實例(豆被加載再次 - 非常重,不良)。我能做些什麼來讓只有一個bean用來處理所有的處理和所有請求?我是Spring的新手,我想我的問題是我在這裏處理多個上下文。我希望他們共享一個singleton bean的單個實例,但不知道如何管理它。
謝謝你的時間!
你確實需要ServletContextPropertyPlaceholderConfigurer類的功能嗎?如果您不試圖在web.xml中解析上下文參數,則可以使用PropertyPlaceholderConfigurer類。 – MetroidFan2002 2011-05-21 16:50:33