在WebSphere上使用slf4j进行OpenJPA日志记录

问题描述

我的Java EE 6应用程序使用带回送功能的slf4j作为记录框架.现在，我想将OpenJpa的SQL跟踪添加到我的日志文件中. OpenJpa文档说，我可以为此使用参数:

My Java EE 6 application uses slf4j with logback as logging framework.Now I want to add the SQL traces of OpenJpa to my log files. The OpenJpa-Documentation says, I can use a parameter to this:

<property name="openjpa.Log" value="slf4j"/>

我将WebSphere Application Server v8.0.0.1用作Java EE容器.如果我将应用程序部署到服务器，则此参数不会更改任何内容.我可以在WebSphere Admin Console中更改日志级别，这可以正常工作.但是a不能绕过OpenJpa登录到我的slf4j框架.

I use the WebSphere Application Server v8.0.0.1 as Java EE container. If I deploy my application to the server, this parameter does not change anything. I can change log levels in WebSphere Admin Console and this works fine. But a cannot bypass the OpenJpa logging to my slf4j framework.

有人使用这样的配置并解决了问题吗?

Does anyone uses such configuration and solved the problem?

顺便说一句.我知道，InformationCenter-Article http://publib.boulder.ibm.com/infocenter/wasinfo/v8r0/index.jsp?topic=%2Fcom.ibm.websphere.nd.doc%2Finfo ％2Fae％2Fae％2Ftejb_jpatroubleshoot.html 说，该参数将被忽略，但一切都应该可行，是吧?

Btw. I know, that the InformationCenter-Article http://publib.boulder.ibm.com/infocenter/wasinfo/v8r0/index.jsp?topic=%2Fcom.ibm.websphere.nd.doc%2Finfo%2Fae%2Fae%2Ftejb_jpatroubleshoot.html says, that the parameter will be ignored, but everything should be possible, eh?

推荐答案

我解决了.

有四件事要做:

1. 假设OpenJpa记录语句.这是通过persistence.xml中的属性条目完成的.
2. 说Slf4j，它也必须从JUL获取日志.这可以通过安装SLF4J的SLF4JBridgeHandler来完成.我通过在应用程序启动时调用的ServletContextListener安装了桥.
3. 配置Logback，使其不记录来自JUL的所有日志，而仅记录所需的日志.这是通过在logBack-test.xml中添加LevelChangePropagator来完成的.
4. 询问WebSphere TraceService将日志从OpenJPA传递到应用程序.这是WebSphere管理控制台中的设置

1. Say that OpenJpa logs the statements. That is done by the property entry in the persistence.xml.
2. Say Slf4j that it has to fetch the logs from JUL too. This can be done by installing the SLF4JBridgeHandler by SLF4J. I installed the bridge via a ServletContextListener which is called at application start.
3. Configure Logback that it does not log ALL logs from JUL but only the needed Logs. This is done by adding the LevelChangePropagator in the logBack-test.xml
4. Ask the WebSphere TraceService to hand down the logs from OpenJPA to the application. This is a setting in the WebSphere Administration Console

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