blocks|key|287970|text|我不确定这是否与您作为WAR部署的事实有关，但是路径应该是“app-sevices+1.0.jar”，jar应该在Java应用程序的库中。问题是:我不确定这是否适用于简化的"war“Java应用程序。我怀疑这只适用于传统的Java部署文件(ear)。我会测试一下生成一个EAR，它包含一个WAR应用程序的WAR，PU的JAR和其他应用服务的JAR，就像传统的Java+EE部署一样。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|287971|另一件要注意的事情是，不支持相对路径，并且并不是所有供应商都支持在SE环境中使用相对路径。|287972|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

Not sure this is related to the fact that you are deploying as a WAR, but the path should be simply "app-sevices-1.0.jar" and the jar should be in the lib of the Java EE application. The thing is: I'm not sure if this is available for the simplified "war" Java EE application. I suspect this is available only for the traditional Java EE deployment file (ear). I would test making an EAR, containing a WAR for the webapp, JAR for the PU and your other JAR for app-services, like a traditional Java EE deployment would be. 

Another thing to note is that relative paths are not supported, and usage of this in SE environment is not supported by all vendors.

blocks|key|288889|text|以防其他人偶然发现:jar-file-语句只是有效的。当持久性单元被部署为企业档案(.ear)的一部分时--在其他情况下(.war)，persistence.xml必须驻留在/META-INF/中，并且不能引用持久性单元之外的类(参见：http://javahowto.blogspot.com/2007/06/where-to-put-persistencexml-in-web-app.html)。因此，据我所知，不可能有一个类位于WEB-INF/+persistence.xml+/META-INF中，它引用的类不在WEB-INF/classes中。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|288890|entityMap|0|LINK|mutability|MUTABLE|url|http://javahowto.blogspot.com/2007/06/where-to-put-persistencexml-in-web-app.html^0|3A|29|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

just in case someone else stumbles upon this: the jar-file-statement is only valid. when the persistence-unit is deployed as part of an Enterprise Archives (.ear) - in every other case (.war), the persistence.xml must reside in /META-INF/ and cannot refrence classes that live outside the persistence-unit (see: <a href="http://javahowto.blogspot.com/2007/06/where-to-put-persistencexml-in-web-app.html" rel="noreferrer">http://javahowto.blogspot.com/2007/06/where-to-put-persistencexml-in-web-app.html</a>). So, as far as I know, there is no way to have a persistence.xml living in WEB-INF/classes/META-INF that references classes that do not live in WEB-INF/classes.

blocks|key|288077|text|看一看jsr总是有效的！|type|unstyled|depth|inlineStyleRanges|entityRanges|data|288078|288079|除了在mapping-file元素中指定的映射文件之外，还可以使用jar-file元素来指定一个或多个JAR文件。如果指定，将在这些JAR文件中搜索托管持久性类，并且将处理在这些JAR文件上找到的任何映射元数据注释，或者使用本规范定义的映射注释默认值来映射它们。这样的JAR文件是相对于包含持久性单元的根的目录或jar文件指定的。|offset|length|style|CODE|288080|下面的示例说明如何使用jar-file元素引用其他持久性类。|288081|288082|Example+1:
app.ear++
+++lib/earEntities.jar++
+++earRootPUnit.jar+(with+META-INF/persistence.xml+)++
persistence.xml+contains:++
+++<jar-file>lib/earEntities.jar</jar-file>++

Example+2:
app.ear
+++lib/earEntities.jar
+++lib/earLibPUnit.jar+(with+META-INF/persistence.xml+)
persistence.xml+contains:
+++<jar-file>earEntities.jar</jar-file>

Example+3:
app.ear
+++lib/earEntities.jar
+++ejbjar.jar+(with+META-INF/persistence.xml+)
persistence.xml+contains:
+++<jar-file>lib/earEntities.jar</jar-file>

Example+4:
app.ear
++++war1.war
+++++++WEB-INF/lib/warEntities.jar
+++++++WEB-INF/lib/warPUnit.jar+(with+META-INF/persistence.xml+)
persistence.xml+contains:
++++<jar-file>warEntities.jar</jar-file>

Example+5:
app.ear
+++war2.war
++++++WEB-INF/lib/warEntities.jar
++++++WEB-INF/classes/META-INF/persistence.xml
persistence.xml+contains:
+++<jar-file>lib/warEntities.jar</jar-file>

Example+6:
app.ear
++++lib/earEntities.jar
++++war2.war
++++WEB-INF/classes/META-INF/persistence.xml
+persistence.xml+contains:
++++<jar-file>../../lib/earEntities.jar</jar-file>

Example+7:
app.ear
+++lib/earEntities.jar
+++war1.war
+++WEB-INF/lib/warPUnit.jar+(with+META-INF/persistence.xml+)
persistence.xml+contains:
+++<jar-file>../../../lib/earEntities.jar</jar-file>|code-block|syntax|javascript|288083|正如您所看到的，这里没有war文件的示例，上面示例中的所有war文件都在ear文件中！|288084|但是我在war文件中进行了测试，只有当我指定jar文件的绝对路径时，它才能工作，对于生产环境来说，这不是一个好方法！|288085|entityMap^0|0|0|3|C|X|8|0|B|8|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|X|8|@]|9|@]|A|$]]|$1|C|3|D|5|6|7|Y|8|@$E|Z|F|10|G|H]|$E|11|F|12|G|H]]|9|@]|A|$]]|$1|I|3|J|5|6|7|13|8|@$E|14|F|15|G|H]]|9|@]|A|$]]|$1|K|3|-4|5|6|7|16|8|@]|9|@]|A|$]]|$1|L|3|M|5|N|7|17|8|@]|9|@]|A|$O|P]]|$1|Q|3|R|5|6|7|18|8|@]|9|@]|A|$]]|$1|S|3|T|5|6|7|19|8|@]|9|@]|A|$]]|$1|U|3|-4|5|6|7|1A|8|@]|9|@]|A|$]]]|V|$]]

Taking a look at jsr always works!

<blockquote>
 8.2.1.6.3 Jar Files
 
 One or more JAR files may be specified using the <code>jar-file</code> elements instead of, or in addition to the mapping files specified in the <code>mapping-file</code> elements. If specified, these JAR files will >be searched for managed persistence classes, and any mapping metadata annotations found on them will be pro-cessed, or they will be mapped using the mapping annotation defaults defined by this specification.
 Such JAR files are specified relative to the directory or jar file that contains the root of the persis-tence unit.
 
 The following examples illustrate the use of the <code>jar-file</code> element to reference additional persistence classes. These examples use the convention that a jar file with a name terminating in “PUnit” contains the <code>persistence.xml</code> file and that a jar file with a name terminating in “Entities” contains additional persistence classes.
</blockquote>

<pre><code>Example 1:
app.ear 
 lib/earEntities.jar 
 earRootPUnit.jar (with META-INF/persistence.xml ) 
persistence.xml contains: 
 &lt;jar-file&gt;lib/earEntities.jar&lt;/jar-file&gt; 

Example 2:
app.ear
 lib/earEntities.jar
 lib/earLibPUnit.jar (with META-INF/persistence.xml )
persistence.xml contains:
 &lt;jar-file&gt;earEntities.jar&lt;/jar-file&gt;

Example 3:
app.ear
 lib/earEntities.jar
 ejbjar.jar (with META-INF/persistence.xml )
persistence.xml contains:
 &lt;jar-file&gt;lib/earEntities.jar&lt;/jar-file&gt;

Example 4:
app.ear
 war1.war
 WEB-INF/lib/warEntities.jar
 WEB-INF/lib/warPUnit.jar (with META-INF/persistence.xml )
persistence.xml contains:
 &lt;jar-file&gt;warEntities.jar&lt;/jar-file&gt;

Example 5:
app.ear
 war2.war
 WEB-INF/lib/warEntities.jar
 WEB-INF/classes/META-INF/persistence.xml
persistence.xml contains:
 &lt;jar-file&gt;lib/warEntities.jar&lt;/jar-file&gt;

Example 6:
app.ear
 lib/earEntities.jar
 war2.war
 WEB-INF/classes/META-INF/persistence.xml
 persistence.xml contains:
 &lt;jar-file&gt;../../lib/earEntities.jar&lt;/jar-file&gt;

Example 7:
app.ear
 lib/earEntities.jar
 war1.war
 WEB-INF/lib/warPUnit.jar (with META-INF/persistence.xml )
persistence.xml contains:
 &lt;jar-file&gt;../../../lib/earEntities.jar&lt;/jar-file&gt;
</code></pre>

As you see there is no example for war files, all war files in the examples above are inside ear files! 
But I tested in war files and it works just when I specify the absolute path of jar files and it is not a good approach for production environment!

blocks|key|3218926|text|war2.war
++++++WEB-INF/lib/warEntities.jar
++++++WEB-INF/classes/META-INF/persistence.xml
persistence.xml+contains:
+++<jar-file>lib/warEntities.jar</jar-file>|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|3218927|此格式适用于war文件。我正在使用Wildlfy+8.2.0和JPA+2.1|unstyled|3218928|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|J|8|@]|9|@]|A|$]]|$1|G|3|-4|5|F|7|K|8|@]|9|@]|A|$]]]|H|$]]

<pre><code>war2.war
 WEB-INF/lib/warEntities.jar
 WEB-INF/classes/META-INF/persistence.xml
persistence.xml contains:
 &lt;jar-file&gt;lib/warEntities.jar&lt;/jar-file&gt;
</code></pre>

this format works for war file. Im using Wildlfy 8.2.0 and JPA 2.1

persistence.xml looks like this: 

<pre><code>&lt;persistence-unit name="testPU" transaction-type="RESOURCE_LOCAL"&gt;
 &lt;provider&gt;org.hibernate.ejb.HibernatePersistence&lt;/provider&gt;
 &lt;non-jta-data-source&gt;jdbc/test&lt;/non-jta-data-source&gt;
 &lt;jar-file&gt;../../lib/app-services-1.0.jar&lt;/jar-file&gt;
 &lt;exclude-unlisted-classes&gt;false&lt;/exclude-unlisted-classes&gt;
&lt;/persistence-unit&gt;
</code></pre>

It is a web project, so the deployment unit is a war file. 
The jar file I tried to refer is in WEB-INF/lib/ folder , persistence.xml is in WEB-INF/classes/META-INF folder. When being deployed, it simply tells me 

<blockquote>
 "WARNING: Unable to find file (ignored): file:.../../lib/app-services-1.0.jar".
</blockquote>

I also tried every possible path I could think of, i.e. ../lib/app-services-1.0.jar, lib/app-services-1.0.jar.

What is the right path to do this?

what is the right path to refer a jar file in jpa persistence.xml in a web app?

Java

persistence.xml看起来像这样：<persistence-unit name="testPU" transaction-type="RESOURCE_LOCAL"> <provider>org.hibernate.ejb.HibernatePersistence</provider> <non-...

问在web应用程序中引用jpa persistence.xml中的jar文件的正确路径是什么？
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