我正在尝试使用以下代码通过蓝牙打印账单,当我运行应用程序时,第一次打印,但是当我重试它不打印时.
package com.sel.bluetooth;
import java.io.OutputStream;
import java.lang.reflect.Method;
import android.app.Activity;
import android.app.Dialog;
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothDevice;
import android.bluetooth.BluetoothSocket;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.IntentFilter;
import android.os.Bundle;
import android.util.Log;
import android.widget.Toast;
public class BluetoothPrint extends Activity {
BluetoothAdapter mBTAdapter;
BluetoothSocket mBTSocket = null;
Dialog dialogProgress;
String BILL, TRANS_ID;
String PRINTER_MAC_ID;
final String ERROR_MESSAGE = "There has been an error in printing the bill.";
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
try {
// BILL = getIntent().getStringExtra("TO_PRINT");
// TRANS_ID …我的应用程序退出了大量并使用了许多罐子和工具.平台 - windows 2008服务器,Spring,hibernate,Quarts,mysql,tomcat-7.35
当我第一次部署并启动服务器完美工作时,但如果我重新启动,我会得到以下错误
SEVERE: ContainerBase.addChild: start:
org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/TestProject]]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:154)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:901)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:877)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:633)
at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1114)
at org.apache.catalina.startup.HostConfig$DeployDirectory.run(HostConfig.java:1673)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
at java.util.concurrent.FutureTask.run(FutureTask.java:166)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
at java.lang.Thread.run(Thread.java:722)
Caused by: java.lang.IllegalStateException: Unable to complete the scan for annotations for web application [/TestProject]. Possible root causes include a too low setting for -Xss and illegal cyclic inheritance dependencies
at org.apache.catalina.startup.ContextConfig.processAnnotationsStream(ContextConfig.java:2109)
at org.apache.catalina.startup.ContextConfig.processAnnotationsJar(ContextConfig.java:1981)
at org.apache.catalina.startup.ContextConfig.processAnnotationsUrl(ContextConfig.java:1947)
at org.apache.catalina.startup.ContextConfig.processAnnotations(ContextConfig.java:1932)
at org.apache.catalina.startup.ContextConfig.webConfig(ContextConfig.java:1326)
at org.apache.catalina.startup.ContextConfig.configureStart(ContextConfig.java:878)
at …在下面的配置中,如果我错过了初始,最大,最小池大小.c3p0中的默认连接池大小是多少？
<bean class="com.mchange.v2.c3p0.ComboPooledDataSource" destroy-method="close" id="dataSource">
<property name="driverClass" value="${dbDriver}"/>
<property name="jdbcUrl" value="${dbURL}"/>
<property name="user" value="${dbUsername}"/>
<property name="password" value="${dbPassword}"/>
<property name="initialPoolSize" value="5"/>
<property name="maxPoolSize" value="50"/>
<property name="minPoolSize" value="5"/>
<property name="maxIdleTime" value="3000"/>
</bean>
我刚开始学习groovy.我想在svn copy命令中将svnSourcePath和svnDestPath传递给shell脚本.但URL未呈现.
node {
stage 'Copy Svn code'
def svnSourcePath = "${svnBaseURL}${svnAppCode}${svnEnvDev}${SVN_DEV_PACKAGE}"
def svnDestPath = "${svnBaseURL}${svnAppCode}${svnEnvTest}${SVN_DEV_PACKAGE}"
print "DEBUG: svnSourcePath = ${svnSourcePath}"
print "DEBUG: svnDestPath = ${svnDestPath}"
withCredentials([[$class: 'UsernamePasswordMultiBinding', credentialsId: crendentialsIdSVN, passwordVariable: 'SVN_PWD', usernameVariable: 'SVN_USER']]) {
sh '''
svn copy $svnSourcePath $svnDestPath -m 'promote dev to test' --username $SVN_USER --password $SVN_PWD '''
}
}
产量
+ svn copy -m 'promote dev to test' --username techuser --password 'xxxyyy'
svn: E205001: Try 'svn help' for more info
svn: E205001: Not enough arguments provided
使用 jdk 1.6 时出现以下错误，但它在 1.7 中工作
cannot find symbol method required() javax.xml.bind.annotation.XmlElementRef
任何的想法？
@XmlElementRef(name = "test", type = JAXBElement.class, required = false)
protected JAXBElement<String> test;
我正在使用hibenate和spring并且在我们从具有250个用户的jmeter命中的情况下获得以下异常
"引起:com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException:数据源拒绝建立连接,来自服务器的消息:"连接太多"
hibernate_cfg.xml
<property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>
<property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
<property name="hibernate.connection.url">jdbc:mysql://localhost:3306/my_db</property>
<property name="hibernate.connection.username">user1</property>
<property name="hibernate.connection.pool_size">1</property>
<property name="hibernate.c3p0.min_size">5</property>
<property name="hibernate.c3p0.max_size">50</property>
<property name="hibernate.c3p0.timeout">300</property>
<property name="hibernate.c3p0.max_statements">500</property>
<property name="hibernate.c3p0.idle_test_period">3000</property>
<property name="hibernate.current_session_context_class">thread</property>
<property name="hibernate.hbm2ddl.auto">update</property>`
弹簧
<bean id="dataSource" scope="prototype" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName">
<value>${dbDriver}</value>
</property>
<property name="url">
<value>${dbURL}</value>
</property>
<property name="username">
<value>${dbUsername}</value>
</property>
<property name="password">
<value>${dbPassword}</value>
</property>
</bean>