Netbeans <；实体>；无法添加，因为它已映射到<；包装>；实体类，该实体不在当前项目源中

我认为Netbeans中的缓存可能有问题，这导致从数据库创建新的

实体类时出现问题…

Netbeans错误：

clients cannot be added because it is already mapped to the net.bounceme.dur.jpa.Client entity class and the entity is not in current project source.

注意，这是在使用资源jdbc/ejb

IDE生成的

persistence.xml

：

<?xml version="1.0" encoding="UTF-8"?>
<persistence version="2.1" xmlns="http://xmlns.jcp.org/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/persistence http://xmlns.jcp.org/xml/ns/persistence/persistence_2_1.xsd">
  <persistence-unit name="A-ejbPU" transaction-type="JTA">
    <jta-data-source>jdbc/ejb</jta-data-source>
    <exclude-unlisted-classes>false</exclude-unlisted-classes>
    <properties>
      <property name="javax.persistence.schema-generation.database.action" value="create"/>
    </properties>
  </persistence-unit>
</persistence>

另一个资源，位于：

虽然我认为glassfish服务器上的资源是可用的，但可能存在一些相互作用

我查过：

thufir@dur:~$ 
thufir@dur:~$ ls /home/thufir/.netbeans
8.0.1
thufir@dur:~$ 
thufir@dur:~$ ls /home/thufir/netbeans-8.0.1/
apisupport    etc      java                      nb            README.html            websvccommon
bin           extide   javafx                    netbeans.css  THIRDPARTYLICENSE.txt
CREDITS.html  harness  LICENSE.txt               platform      uninstall.sh
enterprise    ide      moduleCluster.properties  profiler      webcommon
thufir@dur:~$ 

另见：

---

也许我只是没有看到缓存，假设这就是问题所在？

可能在这里：但我不知道这是否真的能解决问题。我按照删除了

。cache/netbeans/8.0.1

，尽管我不知道根本的问题是什么。这允许从数据库连接创建实体类。

thufir@dur:~/NetBeansProjects$ 
thufir@dur:~/NetBeansProjects$ /home/thufir/glassfish-4.1/glassfish/bin/asadmin
Use "exit" to exit and "help" for online help.
asadmin> 
asadmin> list-jdbc-connection-pools
CLI031: Warning: Option "target" is obsolete and will be ignored.
CLI031: Warning: Option "target" is obsolete and will be ignored.
__TimerPool
DerbyPool
SamplePool
connectionPool
legacy_on_glassfish
Command list-jdbc-connection-pools executed successfully.
asadmin> 
asadmin> ping-connection-pool legacy_on_glassfish
Command ping-connection-pool executed successfully.
asadmin> 
asadmin> list-jdbc-resources
jdbc/sample
jdbc/__TimerPool
jdbc/__default
jdbc/local
jdbc/legacy_resource
Command list-jdbc-resources executed successfully.
asadmin> 
asadmin> exit
Command multimode executed successfully.
thufir@dur:~/NetBeansProjects$ 

thufir@dur:~$ 
thufir@dur:~$ ls /home/thufir/.netbeans
8.0.1
thufir@dur:~$ 
thufir@dur:~$ ls /home/thufir/netbeans-8.0.1/
apisupport    etc      java                      nb            README.html            websvccommon
bin           extide   javafx                    netbeans.css  THIRDPARTYLICENSE.txt
CREDITS.html  harness  LICENSE.txt               platform      uninstall.sh
enterprise    ide      moduleCluster.properties  profiler      webcommon
thufir@dur:~$