java这个SwingWorker是否不重用ThreadPoolExecutor中的线程?
作为我最后一年项目的一部分,我开发了一个桌面应用程序,如果存在这样的东西,它就属于“图形IDE”的范畴。我已经实现了Jessy James Garrett Visual Vocabulary for Information Architecture and Interaction Design的一个小子集,因此用户可以绘制一个图表(换句话说,一个有向图)来表示用户在webapp中的体验,为页面分配HTML模板,并为连接器/转换编写一些代码,一旦应用程序编译完毕,用户单击相应的超链接,就会执行这些代码
(我不能发布多个超链接,但我指的是页面和连接器,如JJG的视觉词汇表中描述的用户体验元素)
<> >我使用不同的SwitgWork来生成一组C++源文件,其中图表被翻译成。查看日志,我发现我的应用程序总是在创建新线程,而不是重用它们15:29:55.750 [SwingWorker-pool-2-thread-26] DEBUG i.v.a.ui.worker.ConnectorGenerator - Building source code for transition: connector_29
15:29:55.750 [SwingWorker-pool-2-thread-26] DEBUG i.v.a.ui.worker.ConnectorGenerator - Project retrieved: sasdasdasd
15:29:55.750 [SwingWorker-pool-2-thread-26] INFO i.v.a.webapp.htcpp.CTransition - Generated C:\Workspaces\PFC\aedifico-ui\sasdasdasd\connector_29_action.h...
15:29:55.750 [SwingWorker-pool-2-thread-26] INFO i.v.a.webapp.htcpp.CTransition - Generated C:\Workspaces\PFC\aedifico-ui\sasdasdasd\connector_29_action.cpp...
15:29:55.750 [SwingWorker-pool-2-thread-26] DEBUG i.v.a.ui.worker.ConnectorGenerator - Transition generated at: C:\Workspaces\PFC\aedifico-ui\sasdasdasd/connector_29_action.cpp
我所有的员工都做同样的两件事:
-
< L> > P>生成一对C++源文件和头文件
Freemarker模板引擎
通过向
EDT
发送消息 发布过程机制 通知用户情况如何 走吧
我相信我已经对^{ThreadPoolExecutor
没有重用之前创建的线程的原因
魔法发生在ConnectorGenerator
。BaseWorker
扩展了SwingWorker<V,T>
,只保留了与组件通信以向用户显示消息的行为
public class ConnectorGenerator<Void> extends BaseWorker<Void> {
@Override
public Void doInBackground() {
Transition transition = connector.getModel().getTransition();
logger.debug("Building source code for transition: {}", transition.getName());
logger.debug("Project retrieved: {}", project.getName());
try {
publish("Generating transition (%s) source code at %s", transition.getName(), project.getBaseDir());
/**
* Transition.build(String), attached below, is responsible of generating and writing the files
*/
transition.build(project.getBaseDir().getPath());
publish("Transition generated.");
} catch (BuilderException e) {
logger.error("Error: {}", e);
publish("There was an error that prevented generating %s's source code", transition.getName());
}
logger.debug("Transition generated at: {}/{}", project.getBaseDir(), transition.getSource());
return null;
}
}
以及Transition.build(String)
方法,包括一个丑陋的try-catch-finally块:
@Override
public void build(String path) throws BuilderException {
generateFile(String.format("%s%s%s", path, File.separator, getHeader()), "action.h.ftl");
generateFile(String.format("%s%s%s", path, File.separator, getSource()), "action.cpp.ftl");
}
private void generateFile(String path, String templateName) throws BuilderException {
FileWriter out = null;
try {
Map<String, Object> model = new HashMap<String, Object>();
model.put("transition", this);
Configuration config = new Configuration();
config.setClassForTemplateLoading(CTransition.class, "/");
config.setObjectWrapper(ObjectWrapper.DEFAULT_WRAPPER);
out = new FileWriter(path);
freemarker.template.Template template = config.getTemplate(templateName);
template.process(model, out, ObjectWrapper.BEANS_WRAPPER);
stdout.info("Generated {}...", path);
} catch (IOException e) {
throw new BuilderException(e);
} catch (TemplateException e) {
throw new BuilderException(e);
} finally {
if (out != null)
try {
out.flush();
out.close();
} catch (IOException e) {
throw new BuilderException(e);
}
}
}
有人看到或知道我可能遗漏的东西吗
# 1 楼答案
也许这对你来说很有趣:SwingWorker deadlocks due one thread in the swingworker-pool