英文:
Concurrency Issue in ISORequestListener
问题
我正在使用 jpos 库进行事务管理（Spring Boot 项目）。我按照以下方式实现了 ISORequestListener 接口。
@Component
public class MyRequestListener implements ISORequestListener, Configurable {
protected String var1;
protected String var2;
@Override
public void setConfiguration(Configuration cfg) throws ConfigurationException {
var1 = cfg.get("var1");
var2 = cfg.get("var2");
}
@Override
public boolean process(ISOSource source, ISOMsg m) {
Context ctx = new Context();
ctx.put("ctx1", var1);
ctx.put("ctx2", var2);
return true;
}
}
在运行 SonarQube（代码分析工具）时，我收到了以下错误信息：
>请使用“@Autowired”、“@Resource”、“@Inject”或“@Value”对全局变量进行注解，或者在 Spring 的 @Component、@Controller、@Service 和 @Repository 类上不要使用这些注解。
>
>Spring 的 @Component、@Controller、@Service 和 @Repository 类默认为单例，这意味着应用程序中只会实例化该类的一个实例。
>
>这样的类可能有一些静态成员，比如记录器，但所有非静态成员应该由 Spring 管理。也就是说，它们应该有这些注解之一：@Resource、@Inject、@Autowired 或 @Value。
这会引起并发问题（或线程问题）吗？还是由 jpos 在内部处理？如果确实会引起问题，正确的实现应该是什么呢？
英文:
I am using jpos library for transaction management(Spring boot project). I am implementing ISORequestListener as below.
@Component
public class MyRequestListner implements ISORequestListener, Configurable {
protected String var1;
protected String var2;
@Override
public void setConfiguration(Configuration cfg) throws ConfigurationException {
var1 = cfg.get("var1");
var2 = cfg.get("var2");
}
@Override
public boolean process(ISOSource source, ISOMsg m) {
Context ctx = new Context();
ctx.put("ctx1", var1);
ctx.put("ctx2", var2);
return true;
}
}
On running SonarQube (code analyzing tool), I got the error message as:
>Annotate global variables with "@Autowired", "@Resource", "@Inject", or "@Value", or don’t use on Spring @Component, @Controller, @Service, and @Repository classes.
>
>Spring @Component, @Controller, @Service, and @Repository classes are singletons by default, meaning only one instance of the class is ever instantiated in the application.
>
>Such a class might have a few static members, such as a logger, but all non-static members should be managed by Spring. That is, they should have one of these annotations: @Resource, @Inject, @Autowired or @Value.
Does this cause any concurrency issue(or thread issue) or internally handled by jpos? What could be the correct implementation if it really causes the problem?
答案1
得分: 1
不过，如果您在其自身的Q2微内核内运行jPOS，就没有问题。如果不是这种情况，恐怕您大部分时间都是自行解决。在Q2内部运行非常简单，只需一行代码：new Q2().start();，您可以从任何其他框架中运行它，然后让Q2配置您的jPOS组件。
英文:
Not a problem if you run jPOS within its own Q2 micro-kernel. If that's not the case, I'm afraid you're mostly on your own. Running inside Q2 is extremely simple, it's a one liner: new Q2().start(); that you can run from any other framework, and then let Q2 configure your jPOS components.
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