Java 与数据库的连接已关闭：软件导致连接中止：套接字写入错误

我遇到了一个问题，我们只能在生产服务器上复制。 以下是堆栈跟踪：

Caused by: org.hibernate.exception.JDBCConnectionException: could not execute query
    at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:74)
    at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:43)
    at org.hibernate.loader.Loader.doList(Loader.java:2214)
    at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2095)
    at org.hibernate.loader.Loader.list(Loader.java:2090)
    at org.hibernate.loader.custom.CustomLoader.list(CustomLoader.java:289)
    at org.hibernate.impl.SessionImpl.listCustomQuery(SessionImpl.java:1695)
    at org.hibernate.impl.AbstractSessionImpl.list(AbstractSessionImpl.java:142)
    at org.hibernate.impl.SQLQueryImpl.list(SQLQueryImpl.java:152)
    at com.dir.web.beans.clientpartners.dao.DaoClientPartnerImpl.getBrandAssignments(DaoClientPartnerImpl.java:268)
    ... 46 more
Caused by: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure

Last packet sent to the server was 0 ms ago.
    at sun.reflect.GeneratedConstructorAccessor143.newInstance(Unknown Source)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
    at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
    at com.mysql.jdbc.Util.handleNewInstance(Util.java:406)
    at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1074)
    at com.mysql.jdbc.MysqlIO.send(MysqlIO.java:3134)
    at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1818)
    at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:1961)
    at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2543)
    at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:1737)
    at com.mysql.jdbc.PreparedStatement.executeQuery(PreparedStatement.java:1888)
    at com.mchange.v2.c3p0.impl.NewProxyPreparedStatement.executeQuery(NewProxyPreparedStatement.java:76)
    at org.hibernate.jdbc.AbstractBatcher.getResultSet(AbstractBatcher.java:186)
    at org.hibernate.loader.Loader.getResultSet(Loader.java:1778)
    at org.hibernate.loader.Loader.doQuery(Loader.java:662)
    at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:224)
    at org.hibernate.loader.Loader.doList(Loader.java:2211)
    ... 53 more
Caused by: java.net.SocketException: Software caused connection abort: socket write error
    at java.net.SocketOutputStream.socketWrite0(Native Method)
    at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:92)
    at java.net.SocketOutputStream.write(SocketOutputStream.java:136)
    at java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:65)
    at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:123)
    at com.mysql.jdbc.MysqlIO.send(MysqlIO.java:3119)
    ... 64 more

您可以看到引发异常的代码：

public List<BrandAssignment> getBrandAssignments(String query) throws ClientPartnerException {
    Validate.notEmpty(query, "The query cannot be empty or null");
    List<BrandAssignment> brandAssignments = null;

    try {
        brandAssignments = getCurrentSession().createSQLQuery(query).addEntity(BrandAssignment.class).list();
        getCurrentSession().close();
    } catch (HibernateException hibernateException) {
        throw new ClientPartnerException("Error getting brand assignments with query: " + query, hibernateException);
    }

    return brandAssignments;

}

问题是，我无法在开发环境中重现错误以测试解决方案，而且我不确定是什么导致了问题，因为我检查了配置，看起来还不错。 查看MySql服务器的超时设置，默认设置为8小时。 这个错误在prod中经常发生，但在dev环境中从未发生过。 任何人都知道可能是什么原因导致了错误，我如何重现这个错误？ 有什么可能的解决办法吗？

---

谢谢

因此，如果您对这段代码的理解是正确的，那么ClientPartnerException的错误文本在哪里呢。我要看的第一件事是查询中的内容，看看是否发生了什么奇怪的事情。可能是EJP的重复，你提到的帖子太笼统了。我在这里寻找一个更具体的答案。托尼，我发布了这个问题。我看不出有什么不好的地方。此外，它在其他环境中也能很好地工作。

    <property name="c3p0.acquire_increment">1</property>
    <property name="c3p0.idle_test_period">5</property>
    <property name="c3p0.max_size">100</property>
    <property name="c3p0.max_statements">0</property>
    <property name="c3p0.min_size">10</property>
    <property name="c3p0.timeout">100</property>

    <property name="current_session_context_class">thread</property>

    <!-- SQL dialect -->
    <property name="dialect">org.hibernate.dialect.MySQLDialect</property>

    <!-- Disable the second-level cache -->
    <property name="cache.provider_class">org.hibernate.cache.NoCacheProvider</property>

SELECT DISTINCT brand_assig.brand_assignment_id, brand_assignment_name, brand_assig.date_created, brand_assig.date_modified, brand_assig.modified_by, brand_assig.client_division_id, brand_assig.business_category, brand_assig.country, brand_assig.region, brand_assig.office_alias, brand_assig.assignment_start_date, brand_assig.assignment_end_date, brand_assig.assignment_status, brand_assig.industry_experience, brand_assig.description, brand_assig.communication_disciplines, brand_assig.client_type 
FROM clnt_parent INNER JOIN clnt_partner INNER JOIN clnt_div INNER JOIN brand_assig 
ON client_division.client_division_id = brand_assig.client_division_id AND    client_partner.client_partner_id = client_division.client_partner_id AND    client_parent.client_parent_id = client_partner.client_parent_id 
WHERE ( MATCH (client_partner_name) AGAINST ('+nutrition*'IN BOOLEAN MODE) OR MATCH (client_parent_name) AGAINST ('+nutrition*'IN BOOLEAN MODE) OR MATCH (client_division_name) AGAINST ('+nutrition*'IN BOOLEAN MODE) OR MATCH (brand_assignment_name, industry_experience) AGAINST ('+nutrition*'IN BOOLEAN MODE)) AND brand_assig.assignment_end_date IS NOT NULL 
ORDER BY client_partner.client_partner_name