javax.persistence.TransactionRequiredException:没有PuId的活动事务=

我有一个web应用程序。 从桌子上取东西很好用

但是 当我尝试更新同一个表时，通过使用JPA，我得到异常消息：

javax.persistence.TransactionRequiredException: No active transaction for PuId =....

我使用的是transaction type=“JTA”（容器管理）和transaction.required。 似乎

**

我有一个使用JTA事务类型从MDB进行更新的示例，它运行良好

**

这是我的persistence.xml

<?xml version="1.0" encoding="UTF-8"?>
<persistence version="2.0"
xmlns="http://java.sun.com/xml/ns/persistence"    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd">
<persistence-unit name="sysAdmin" transaction-type="JTA">
    <provider>
        org.apache.openjpa.persistence.PersistenceProviderImpl
    </provider>
    <jta-data-source>comp/env/jdbc/sys-SRV</jta-data-source>

    <class>com.sys.admin.jpa.sysAdminAppl</class>
    <class>com.sys.admin.jpa.sysAdminTable</class>
    <class>com.sys.admin.jpa.sysAdminTablePK</class>
    <class>com.sys.admin.jpa.Dbsys0001</class>
    <exclude-unlisted-classes>true</exclude-unlisted-classes>
    <properties>
        <property name="openjpa.jdbc.DBDictionary" value="sqlserver" />
        <property name="Multithreaded" value="true" />
        <property name="openjpa.jdbc.Schema" value="dbsys" />
        <property name="openjpa.TransactionMode" value="managed"/>
        <property name="openjpa.ConnectionFactoryMode" value="managed"/>
    </properties>
</persistence-unit>
<persistence-unit name="mtmAdminUpdate" transaction-type="RESOURCE_LOCAL">
    <provider>
        org.apache.openjpa.persistence.PersistenceProviderImpl
    </provider>

    <non-jta-data-source>comp/env/jdbc/jpa</non-jta-data-source>
    <class>com.sys.admin.jpa.sysAdminAppl</class>
    <class>com.sys.admin.jpa.sysAdminTable</class>
    <class>com.sys.admin.jpa.sysAdminTablePK</class>
    <class>com.sys.admin.jpa.dbsys0001</class>
    <exclude-unlisted-classes>true</exclude-unlisted-classes>
    <properties>
        <property name="openjpa.jdbc.DBDictionary" value="sqlserver" />
        <property name="Multithreaded" value="true" />
        <property name="openjpa.jdbc.Schema" value="dbsys" />
    </properties>

</persistence-unit>

<?xml version="1.0" encoding="UTF-8"?>
<web-app id="WebApp_ID" version="3.0" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">
    <display-name>sysAdmin</display-name>
    <welcome-file-list>
        <welcome-file>index.html</welcome-file>
        <welcome-file>index.htm</welcome-file>
        <welcome-file>index.jsp</welcome-file>
        <welcome-file>default.html</welcome-file>
        <welcome-file>default.htm</welcome-file>
        <welcome-file>default.jsp</welcome-file>
    </welcome-file-list>
    <resource-ref  id="adminDb">
        <description></description>
        <res-ref-name>aliasDataSource</res-ref-name>
        <res-type>javax.sql.DataSource</res-type>
        <res-auth>Container</res-auth>
        <res-sharing-scope>Shareable</res-sharing-scope>
    </resource-ref>


</web-app>

<?xml version="1.0" encoding="UTF-8"?>
<web-ext
    xmlns="http://websphere.ibm.com/xml/ns/javaee"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://websphere.ibm.com/xml/ns/javaee http://websphere.ibm.com/xml/ns/javaee/ibm-web-ext_1_1.xsd"
    version="1.1">

    <reload-interval value="3"/><resource-ref name="resourceSqlserver" isolation-level="TRANSACTION_READ_UNCOMMITTED" connection-management-policy="DEFAULT"/>
    <enable-directory-browsing value="false"/>
    <enable-file-serving value="true"/>
    <enable-reloading value="true"/>
    <enable-serving-servlets-by-class-name value="true" />

</web-ext>

<?xml version="1.0" encoding="UTF-8"?>
<web-bnd 
    xmlns="http://websphere.ibm.com/xml/ns/javaee"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://websphere.ibm.com/xml/ns/javaee http://websphere.ibm.com/xml/ns/javaee/ibm-web-bnd_1_1.xsd"
    version="1.1">

    <virtual-host name="default_host" />

    <resource-ref name="aliasDataSource"
        binding-name="comp/env/jdbc/SYS-SRV">
    </resource-ref>

</web-bnd>

。 . .

控制器

package com.sys.admin.jpa.controller;

import java.util.List;

import com.ibm.jpa.web.JPAManager;

import javax.ejb.TransactionAttribute;
import javax.ejb.TransactionAttributeType;
import javax.inject.Inject;
import javax.persistence.EntityManager;
import javax.persistence.EntityManagerFactory;
import javax.persistence.Query;

import org.aspectj.weaver.patterns.ThrowsPattern;

import com.ibm.jpa.web.NamedQueryTarget;
import com.ibm.jpa.web.Action;
import com.sys.admin.jpa.SysAdminAppl;
import com.sys.admin.jpa.SysAdminApplPK;
import com.sys.admin.jpa.SysAdminTable;

@SuppressWarnings("unchecked")
@JPAManager(targetEntity = com.sys.admin.jpa.SysAdminAppl.class)
public class SysAdminApplManager {



    private EntityManager em;
    private String exceptionMessage;
.
.
.
.
@Action(Action.ACTION_TYPE.UPDATE)
    public String updateSysAdminAppl(SysAdminAppl sysAdminAppl)
            throws Exception {
        EntityManager em = getEntityManager();
        try {
            //em.getTransaction().begin();
            sysAdminAppl = em.merge(sysAdminAppl);
            //em.getTransaction().commit();
        } catch (Exception ex) {
            exceptionMessage = ex.getMessage();
            try {
                if (em.getTransaction().isActive()) {
                    em.getTransaction().rollback();
                }
            } catch (Exception e) {
                ex.printStackTrace();
                exceptionMessage = e.getMessage();
                throw e;
            }
            throw ex;
        } finally {
            em.close();
        }
        return "";
    }
.
.
.

这是我的web.xml

<?xml version="1.0" encoding="UTF-8"?>
<persistence version="2.0"
xmlns="http://java.sun.com/xml/ns/persistence"    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd">
<persistence-unit name="sysAdmin" transaction-type="JTA">
    <provider>
        org.apache.openjpa.persistence.PersistenceProviderImpl
    </provider>
    <jta-data-source>comp/env/jdbc/sys-SRV</jta-data-source>

    <class>com.sys.admin.jpa.sysAdminAppl</class>
    <class>com.sys.admin.jpa.sysAdminTable</class>
    <class>com.sys.admin.jpa.sysAdminTablePK</class>
    <class>com.sys.admin.jpa.Dbsys0001</class>
    <exclude-unlisted-classes>true</exclude-unlisted-classes>
    <properties>
        <property name="openjpa.jdbc.DBDictionary" value="sqlserver" />
        <property name="Multithreaded" value="true" />
        <property name="openjpa.jdbc.Schema" value="dbsys" />
        <property name="openjpa.TransactionMode" value="managed"/>
        <property name="openjpa.ConnectionFactoryMode" value="managed"/>
    </properties>
</persistence-unit>
<persistence-unit name="mtmAdminUpdate" transaction-type="RESOURCE_LOCAL">
    <provider>
        org.apache.openjpa.persistence.PersistenceProviderImpl
    </provider>

    <non-jta-data-source>comp/env/jdbc/jpa</non-jta-data-source>
    <class>com.sys.admin.jpa.sysAdminAppl</class>
    <class>com.sys.admin.jpa.sysAdminTable</class>
    <class>com.sys.admin.jpa.sysAdminTablePK</class>
    <class>com.sys.admin.jpa.dbsys0001</class>
    <exclude-unlisted-classes>true</exclude-unlisted-classes>
    <properties>
        <property name="openjpa.jdbc.DBDictionary" value="sqlserver" />
        <property name="Multithreaded" value="true" />
        <property name="openjpa.jdbc.Schema" value="dbsys" />
    </properties>

</persistence-unit>

<?xml version="1.0" encoding="UTF-8"?>
<web-app id="WebApp_ID" version="3.0" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">
    <display-name>sysAdmin</display-name>
    <welcome-file-list>
        <welcome-file>index.html</welcome-file>
        <welcome-file>index.htm</welcome-file>
        <welcome-file>index.jsp</welcome-file>
        <welcome-file>default.html</welcome-file>
        <welcome-file>default.htm</welcome-file>
        <welcome-file>default.jsp</welcome-file>
    </welcome-file-list>
    <resource-ref  id="adminDb">
        <description></description>
        <res-ref-name>aliasDataSource</res-ref-name>
        <res-type>javax.sql.DataSource</res-type>
        <res-auth>Container</res-auth>
        <res-sharing-scope>Shareable</res-sharing-scope>
    </resource-ref>


</web-app>

<?xml version="1.0" encoding="UTF-8"?>
<web-ext
    xmlns="http://websphere.ibm.com/xml/ns/javaee"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://websphere.ibm.com/xml/ns/javaee http://websphere.ibm.com/xml/ns/javaee/ibm-web-ext_1_1.xsd"
    version="1.1">

    <reload-interval value="3"/><resource-ref name="resourceSqlserver" isolation-level="TRANSACTION_READ_UNCOMMITTED" connection-management-policy="DEFAULT"/>
    <enable-directory-browsing value="false"/>
    <enable-file-serving value="true"/>
    <enable-reloading value="true"/>
    <enable-serving-servlets-by-class-name value="true" />

</web-ext>

<?xml version="1.0" encoding="UTF-8"?>
<web-bnd 
    xmlns="http://websphere.ibm.com/xml/ns/javaee"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://websphere.ibm.com/xml/ns/javaee http://websphere.ibm.com/xml/ns/javaee/ibm-web-bnd_1_1.xsd"
    version="1.1">

    <virtual-host name="default_host" />

    <resource-ref name="aliasDataSource"
        binding-name="comp/env/jdbc/SYS-SRV">
    </resource-ref>

</web-bnd>

系统管理员
index.html
index.htm
index.jsp
default.html
default.htm
default.jsp
别名数据源
javax.sql.DataSource
容器
可分享

ibm-web-ext.xml

<?xml version="1.0" encoding="UTF-8"?>
<persistence version="2.0"
xmlns="http://java.sun.com/xml/ns/persistence"    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd">
<persistence-unit name="sysAdmin" transaction-type="JTA">
    <provider>
        org.apache.openjpa.persistence.PersistenceProviderImpl
    </provider>
    <jta-data-source>comp/env/jdbc/sys-SRV</jta-data-source>

    <class>com.sys.admin.jpa.sysAdminAppl</class>
    <class>com.sys.admin.jpa.sysAdminTable</class>
    <class>com.sys.admin.jpa.sysAdminTablePK</class>
    <class>com.sys.admin.jpa.Dbsys0001</class>
    <exclude-unlisted-classes>true</exclude-unlisted-classes>
    <properties>
        <property name="openjpa.jdbc.DBDictionary" value="sqlserver" />
        <property name="Multithreaded" value="true" />
        <property name="openjpa.jdbc.Schema" value="dbsys" />
        <property name="openjpa.TransactionMode" value="managed"/>
        <property name="openjpa.ConnectionFactoryMode" value="managed"/>
    </properties>
</persistence-unit>
<persistence-unit name="mtmAdminUpdate" transaction-type="RESOURCE_LOCAL">
    <provider>
        org.apache.openjpa.persistence.PersistenceProviderImpl
    </provider>

    <non-jta-data-source>comp/env/jdbc/jpa</non-jta-data-source>
    <class>com.sys.admin.jpa.sysAdminAppl</class>
    <class>com.sys.admin.jpa.sysAdminTable</class>
    <class>com.sys.admin.jpa.sysAdminTablePK</class>
    <class>com.sys.admin.jpa.dbsys0001</class>
    <exclude-unlisted-classes>true</exclude-unlisted-classes>
    <properties>
        <property name="openjpa.jdbc.DBDictionary" value="sqlserver" />
        <property name="Multithreaded" value="true" />
        <property name="openjpa.jdbc.Schema" value="dbsys" />
    </properties>

</persistence-unit>

<?xml version="1.0" encoding="UTF-8"?>
<web-app id="WebApp_ID" version="3.0" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">
    <display-name>sysAdmin</display-name>
    <welcome-file-list>
        <welcome-file>index.html</welcome-file>
        <welcome-file>index.htm</welcome-file>
        <welcome-file>index.jsp</welcome-file>
        <welcome-file>default.html</welcome-file>
        <welcome-file>default.htm</welcome-file>
        <welcome-file>default.jsp</welcome-file>
    </welcome-file-list>
    <resource-ref  id="adminDb">
        <description></description>
        <res-ref-name>aliasDataSource</res-ref-name>
        <res-type>javax.sql.DataSource</res-type>
        <res-auth>Container</res-auth>
        <res-sharing-scope>Shareable</res-sharing-scope>
    </resource-ref>


</web-app>

<?xml version="1.0" encoding="UTF-8"?>
<web-ext
    xmlns="http://websphere.ibm.com/xml/ns/javaee"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://websphere.ibm.com/xml/ns/javaee http://websphere.ibm.com/xml/ns/javaee/ibm-web-ext_1_1.xsd"
    version="1.1">

    <reload-interval value="3"/><resource-ref name="resourceSqlserver" isolation-level="TRANSACTION_READ_UNCOMMITTED" connection-management-policy="DEFAULT"/>
    <enable-directory-browsing value="false"/>
    <enable-file-serving value="true"/>
    <enable-reloading value="true"/>
    <enable-serving-servlets-by-class-name value="true" />

</web-ext>

<?xml version="1.0" encoding="UTF-8"?>
<web-bnd 
    xmlns="http://websphere.ibm.com/xml/ns/javaee"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://websphere.ibm.com/xml/ns/javaee http://websphere.ibm.com/xml/ns/javaee/ibm-web-bnd_1_1.xsd"
    version="1.1">

    <virtual-host name="default_host" />

    <resource-ref name="aliasDataSource"
        binding-name="comp/env/jdbc/SYS-SRV">
    </resource-ref>

</web-bnd>

ibm web bnd.xml

<?xml version="1.0" encoding="UTF-8"?>
<persistence version="2.0"
xmlns="http://java.sun.com/xml/ns/persistence"    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd">
<persistence-unit name="sysAdmin" transaction-type="JTA">
    <provider>
        org.apache.openjpa.persistence.PersistenceProviderImpl
    </provider>
    <jta-data-source>comp/env/jdbc/sys-SRV</jta-data-source>

    <class>com.sys.admin.jpa.sysAdminAppl</class>
    <class>com.sys.admin.jpa.sysAdminTable</class>
    <class>com.sys.admin.jpa.sysAdminTablePK</class>
    <class>com.sys.admin.jpa.Dbsys0001</class>
    <exclude-unlisted-classes>true</exclude-unlisted-classes>
    <properties>
        <property name="openjpa.jdbc.DBDictionary" value="sqlserver" />
        <property name="Multithreaded" value="true" />
        <property name="openjpa.jdbc.Schema" value="dbsys" />
        <property name="openjpa.TransactionMode" value="managed"/>
        <property name="openjpa.ConnectionFactoryMode" value="managed"/>
    </properties>
</persistence-unit>
<persistence-unit name="mtmAdminUpdate" transaction-type="RESOURCE_LOCAL">
    <provider>
        org.apache.openjpa.persistence.PersistenceProviderImpl
    </provider>

    <non-jta-data-source>comp/env/jdbc/jpa</non-jta-data-source>
    <class>com.sys.admin.jpa.sysAdminAppl</class>
    <class>com.sys.admin.jpa.sysAdminTable</class>
    <class>com.sys.admin.jpa.sysAdminTablePK</class>
    <class>com.sys.admin.jpa.dbsys0001</class>
    <exclude-unlisted-classes>true</exclude-unlisted-classes>
    <properties>
        <property name="openjpa.jdbc.DBDictionary" value="sqlserver" />
        <property name="Multithreaded" value="true" />
        <property name="openjpa.jdbc.Schema" value="dbsys" />
    </properties>

</persistence-unit>

<?xml version="1.0" encoding="UTF-8"?>
<web-app id="WebApp_ID" version="3.0" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">
    <display-name>sysAdmin</display-name>
    <welcome-file-list>
        <welcome-file>index.html</welcome-file>
        <welcome-file>index.htm</welcome-file>
        <welcome-file>index.jsp</welcome-file>
        <welcome-file>default.html</welcome-file>
        <welcome-file>default.htm</welcome-file>
        <welcome-file>default.jsp</welcome-file>
    </welcome-file-list>
    <resource-ref  id="adminDb">
        <description></description>
        <res-ref-name>aliasDataSource</res-ref-name>
        <res-type>javax.sql.DataSource</res-type>
        <res-auth>Container</res-auth>
        <res-sharing-scope>Shareable</res-sharing-scope>
    </resource-ref>


</web-app>

<?xml version="1.0" encoding="UTF-8"?>
<web-ext
    xmlns="http://websphere.ibm.com/xml/ns/javaee"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://websphere.ibm.com/xml/ns/javaee http://websphere.ibm.com/xml/ns/javaee/ibm-web-ext_1_1.xsd"
    version="1.1">

    <reload-interval value="3"/><resource-ref name="resourceSqlserver" isolation-level="TRANSACTION_READ_UNCOMMITTED" connection-management-policy="DEFAULT"/>
    <enable-directory-browsing value="false"/>
    <enable-file-serving value="true"/>
    <enable-reloading value="true"/>
    <enable-serving-servlets-by-class-name value="true" />

</web-ext>

<?xml version="1.0" encoding="UTF-8"?>
<web-bnd 
    xmlns="http://websphere.ibm.com/xml/ns/javaee"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://websphere.ibm.com/xml/ns/javaee http://websphere.ibm.com/xml/ns/javaee/ibm-web-bnd_1_1.xsd"
    version="1.1">

    <virtual-host name="default_host" />

    <resource-ref name="aliasDataSource"
        binding-name="comp/env/jdbc/SYS-SRV">
    </resource-ref>

</web-bnd>

您需要在调用JPA之前启动JTA事务：使用

@Resource UserTransaction userTran

，然后在调用JPA之前使用

userTran.begin（）

/

userTran.commit（）

。

据我所知，CMP事务是由EJB设置的，而不是J2EE6规范中的servlet

我过去也遇到过类似的问题，这与我对这一点的误解有关

如果您看这里：，文档 很清楚地说明了这一点：

在具有容器管理的事务划分的企业bean中， EJB容器设置事务的边界。你可以用 具有任何类型企业bean的容器管理事务： 会话或消息驱动。容器管理的事务简化了 开发，因为企业bean代码没有显式标记 交易的边界。代码不包括语句 开始和结束事务。默认情况下，如果没有事务 如果指定了界限，企业bean将使用容器管理 事务划分

通常，容器在事务发生之前立即开始事务 EnterpriseBean方法启动并在之前提交事务 方法退出。每个方法都可以与单个 交易在一个数据库中不允许嵌套或多个事务 方法

换句话说。。。将持久性代码分解成EJB，并从servlet调用它