Grails 应用程序上的断管异常

Question

我使用 jdk 1.7 和 MySQL Workbench 6.3 在 Grails 2.4.4 上开发了一个应用程序。它工作了一段时间，但在部署几个小时后我尝试登录，它停止工作并抛出异常“java.net.SocketException：Broken pipe”。

2016-10-24 09:40:53,599 [http-nio-8080-exec-12] ERROR errors.GrailsExceptionResolver  - SocketException occurred when processing request: [POST] /login/autenticacao
Broken pipe. Stacktrace follows:
java.net.SocketException: Broken pipe
    at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:109)
    at java.net.SocketOutputStream.write(SocketOutputStream.java:153)
    at java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:82)
    at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:140)
    at com.mysql.jdbc.MysqlIO.send(MysqlIO.java:3832)
    at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2471)
    at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2651)
    at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2734)
    at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:2155)
    at com.mysql.jdbc.PreparedStatement.executeQuery(PreparedStatement.java:2322)
    at org.grails.datastore.gorm.GormStaticApi$_methodMissing_closure2.doCall(GormStaticApi.groovy:102)
    at sig.PasswordEncrypt.verificaAutenticacao(PasswordEncrypt.groovy:25)
    at sig.LoginController$_closure1.doCall(LoginController.groovy:20)
    at grails.plugin.cache.web.filter.PageFragmentCachingFilter.doFilter(PageFragmentCachingFilter.java:198)
    at grails.plugin.cache.web.filter.AbstractFilter.doFilter(AbstractFilter.java:63)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at java.lang.Thread.run(Thread.java:745)

我有一个具有以下配置的外部文件：

   beans{
    dataSource(BasicDataSource) {
        url = "jdbc:mysql://127.0.0.1/db_name?autoReconnect=true"
        username = "root"
        password = "root"
        pooled = true
        properties {
            jmxEnabled = true
            initialSize = 5
            maxActive = 50
            maxAge = 10 * 60000
            jdbcInterceptors = "ConnectionState"
            validationInterval = 15000
            minIdle = 5
            maxIdle = 25
            maxWaitMillis = 0
            timeBetweenEvictionRunsMillis = 1000 * 60 * 30
            numTestsPerEvictionRun = 3
            minEvictableIdleTimeMillis = 1000 * 60 * 30
            validationQuery = "SELECT 1"
            validationQueryTimeout = 3
            testOnBorrow = true
            testWhileIdle = true
            testOnReturn = true
            defaultTransactionIsolation = java.sql.Connection.TRANSACTION_READ_COMMITTED
        }
    }
}

我还在/etc文件夹中添加了port:3306到my.cnf文件和mysqld : ALL : ACCEPT到hosts.allow文件。

大部分属性是在其他线程中进行一些研究后添加的，但它仍然不起作用。 谁能帮我找到解决这个问题的方法？

编辑

在尝试了 Dipak Thoke 给出的解决方案后，它仍然会抛出损坏的管道异常。它还显示以下错误

2016-10-25 09:03:33,683 [http-nio-8080-exec-37] ERROR spi.SqlExceptionHelper  - The last packet successfully received from the server was 38,766,997 milliseconds ago.  The last packet sent successfully to the server was 38,766,997 milliseconds ago. is longer than the server configured value of 'wait_timeout'. You should consider either expiring and/or testing connection validity before use in your application, increasing the server configured values for client timeouts, or using the Connector/J connection property 'autoReconnect=true' to avoid this problem.

我应该更改“wait_timeout”值吗？因为我已经有了“autoReconnect=true”属性

Answer 1

您需要c3p0您的项目

步骤：1

添加这个“BuildConfig.groovy”

dependencies {
        // specify dependencies here under either 'build', 'compile'

        compile 'c3p0:c3p0:0.9.1.2'
    }

第 2 步：

数据源常规： 现在你的数据源会是这样的，只是去掉其他的东西。

beans {
    dataSource(BasicDataSource) {
        **url = "jdbc:mysql://127.0.0.1/db_name"**
        driverClassName = "com.mysql.jdbc.Driver"
        username = "root"
        password = "root"
        pooled = true
   }
}

更多信息

Do I need to use C3P0 pooling library in my (grails) web application?

How do I configure c3p0 for a grails 2.X application with multiple datasources?.

http://blog.nutpan.com/2013/07/grails-broken-pipe-and-cannot-release.html

谢谢

Answer 2

使用此处提供的解决方案，我的应用程序总是遇到管道损坏异常。我使用每小时运行的脚本创建了一个 web 服务，这样应用程序就永远不会失去与数据库的连接。从那时起，该异常就再也没有被抛出过。无论如何，谢谢大家的回答:)