13518219792
你的软件出现BUG了，很明显你输入了特殊内容或者本身程序没处理好一些常用操作，java.lang.classcastException:java.util.LinkedList专业术语就是类造型异常，如果你不是专业人员的话，建议找开发人员看看哈
10年积累的成都做网站、成都网站制作经验，可以快速应对客户对网站的新想法和需求。提供各种问题对应的解决方案。让选择我们的客户得到更好、更有力的网络服务。我虽然不认识你，你也不认识我。但先做网站设计后付款的网站建设流程，更有临清免费网站建设让你可以放心的选择与我们合作。
可以用JNI，JNI是Java Native Interface的缩写，它提供了若干的API实现了Java和其他语言的通信（主要是CC++）。
import java.applet.Applet;
import java.applet.AudioClip;
import java.awt.AWTException;
import java.awt.Frame;
import java.awt.SystemTray;
import java.awt.TrayIcon;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.io.File;
import java.io.IOException;
import javax.imageio.ImageIO;
import javax.swing.*;
public class bofan_2 extends JFrame implements ActionListener
{
boolean looping=false;
File file1=null;
AudioClip sound1;
AudioClip chosenClip;
private JComboBox box1=null; //歌曲列表
private JButton butbofan=null; //播放
private JButton butboxhuan=null; //循环播放
private JButton buttinzi=null; //停止
private JButton butshan=null; //上一首
private JButton butzhantin=null; //暂停
private JButton butxia=null; //下一首
private TrayIcon trayIcon;//托盘图标
private SystemTray systemTray;//系统托盘
public bofan_2()
{
this.setSize(420,400);
this.setResizable(false);
this.setLocationRelativeTo(null);
this.setLayout(null);
box1=new JComboBox();
box1.addItem("伤心太平洋");
box1.addItem("劲爆的士高");
box1.addItem("老夫少妻");
box1.addItem("爱不再来");
box1.addItem("抽身");
box1.addItem("伤心城市");
box1.addItem("二零一二");
box1.addItem("精忠报国");
box1.addItem("秋沙");
box1.addItem("吻别");
box1.addItem("音乐疯起来");
box1.setBounds(10,20,150,20);
butbofan=new JButton("播放");
butbofan.addActionListener(this);
butbofan.setBounds(165,50,60,20);
butboxhuan=new JButton("循环播放");
butboxhuan.addActionListener(this);
butboxhuan.setBounds(230,50,90,20);
buttinzi=new JButton("停止");
buttinzi.setEnabled(false);
buttinzi.addActionListener(this);
buttinzi.setBounds(335,50,60,20);
butshan=new JButton("上一首");
butshan.addActionListener(this);
butshan.setBounds(165,90,80,20);
butzhantin=new JButton("暂停");
butzhantin.setEnabled(false);
butzhantin.addActionListener(this);
butzhantin.setBounds(250,90,60,20);
butxia=new JButton("下一首");
butxia.addActionListener(this);
butxia.setBounds(320,90,80,20);
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
this.getContentPane().add(box1);
this.getContentPane().add(butbofan);
this.getContentPane().add(butboxhuan);
this.getContentPane().add(buttinzi);
this.getContentPane().add(butshan);
this.getContentPane().add(butzhantin);
this.getContentPane().add(butxia);
try {
UIManager.setLookAndFeel("org.jvnet.substance.skin.SubstanceOfficeBlue2007LookAndFeel");
} catch (ClassNotFoundException e)
{
e.printStackTrace();
} catch (InstantiationException e)
{
e.printStackTrace();
} catch (IllegalAccessException e)
{
e.printStackTrace();
} catch (UnsupportedLookAndFeelException e)
{
e.printStackTrace();
}
setSize(450,450);
systemTray = SystemTray.getSystemTray();//获得系统托盘的实例
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
try {
trayIcon = new TrayIcon(ImageIO.read(new File("004.jpg")));
systemTray.add(trayIcon);//设置托盘的图标，0.gif与该类文件同一目录
}
catch (IOException e1)
{
e1.printStackTrace();
}
catch (AWTException e2)
{
e2.printStackTrace();
}
this.addWindowListener(
new WindowAdapter(){
public void windowIconified(WindowEvent e)
{
dispose();//窗口最小化时dispose该窗口
}
});
trayIcon.addMouseListener(new MouseAdapter()
{
public void mouseClicked(MouseEvent e){
if(e.getClickCount() == 2)//双击托盘窗口再现
setExtendedState(Frame.NORMAL);
setVisible(true);
}
});
this.setVisible(true);
}
public void actionPerformed(ActionEvent e)
{
Object source = e.getSource();
if (source== butbofan)
{
System.out.println((String) box1.getSelectedItem());
file1=new File((String) box1.getSelectedItem()+".wav");
butboxhuan.setEnabled(true);
buttinzi.setEnabled(true);
butzhantin.setEnabled(true);
butzhantin.setText("暂停");
try {
sound1 = Applet.newAudioClip(file1.toURL());
chosenClip = sound1;
} catch(OutOfMemoryError er){
System.out.println("内存溢出");
er.printStackTrace();
} catch(Exception ex){
ex.printStackTrace();
}
chosenClip.play();
this.setTitle("正在播放"+(String) box1.getSelectedItem());
}
if (source== butboxhuan)
{
file1=new File((String) box1.getSelectedItem()+".wav");
try {
sound1 = Applet.newAudioClip(file1.toURL());
chosenClip = sound1;
} catch(OutOfMemoryError er){
System.out.println("内存溢出");
er.printStackTrace();
} catch(Exception ex){
ex.printStackTrace();
}
looping = true;
chosenClip.loop();
butboxhuan.setEnabled(false);
buttinzi.setEnabled(true);
butzhantin.setText("暂停");
this.setTitle("正在循环播放"+(String) box1.getSelectedItem());
}
if (source== buttinzi)
{
if (looping)
{
looping = false;
chosenClip.stop();
butboxhuan.setEnabled(true);
butzhantin.setText("暂停");
} else {
chosenClip.stop();
}
buttinzi.setEnabled(false);
this.setTitle("停止播放");
}
if(source==butshan)
{
butzhantin.setText("暂停");
}
if(source==butzhantin)
{
buttinzi.setEnabled(false);
butzhantin.setText("继续");
if(source==butzhantin)
{
butzhantin.setText("暂停");
}
}
if(source==butxia)
{
butzhantin.setText("暂停");
}
}
public static void main(String[] args)
{
bofan_2 xx=new bofan_2();
}
}
/*
可以用加载声音文件的方法：
第一帧：mysound= new Sound();
mysound.attachSound(声音id名字);
ptime = 0;
播放按钮as：
on(release){
mysound.start(ptime);
}
暂停按钮as：
on(release){
ptime = mysound.position/1000;
mysound.stop();
}
*/
Java代码
### The error occurred while setting parameters
### SQL: insert into SYS_SECURITY_RIGHT_SYSTEM( SYSRIGHT_ID, SYS_ORDER, SYS_NAME, SYS_MEMO ) values ( ?, ?, ?, ? )
### Cause: java.sql.SQLException: ORA-01400: 无法将 NULL 插入 ("SMARTCITY"."SYS_SECURITY_RIGHT_SYSTEM"."SYSRIGHT_ID")
]
在使用Mybatis主键自增长时，其要求使用Integer，使用〈selectKey〉时需要数据库中存在一条数据，不然回报上述错误。
Java代码
2013-06-19 09:27:56,109 [http-bio-8080-exec-1] DEBUG [org.mybatis.spring.SqlSessionUtils] - Registering transaction synchronization for SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@1681460]
2013-06-19 09:27:56,119 [http-bio-8080-exec-1] DEBUG [org.mybatis.spring.transaction.SpringManagedTransaction] - JDBC Connection [org.apache.commons.dbcp.PoolableConnection@a1e9b0] will be managed by Spring
2013-06-19 09:27:56,119 [http-bio-8080-exec-1] DEBUG [dci.smartcity.operationsmanagement.dao.IOrgDAO.update] - ooo Using Connection [org.apache.commons.dbcp.PoolableConnection@a1e9b0]
2013-06-19 09:27:56,129 [http-bio-8080-exec-1] DEBUG [dci.smartcity.operationsmanagement.dao.IOrgDAO.update] - == Preparing: update SYS_SECURITY_ORG SET ORG_NAME= ?, ORG_PID=?, ORG_ORDER=?, ORG_MEMO=?, ORG_CREATETIME=?, ORG_CREATEUSER=? where ORG_ID = ?
2013-06-19 09:27:56,129 [http-bio-8080-exec-1] DEBUG [dci.smartcity.operationsmanagement.dao.IOrgDAO.update] - == Parameters: xx (String), 1(Integer), 2(Integer), dfd (String), 20121111(Integer), ??????? (String), 3(Integer)
2013-06-19 09:27:56,156 [http-bio-8080-exec-1] DEBUG [org.springframework.jdbc.support.SQLErrorCodeSQLExceptionTranslator] - Unable to translate SQLException with Error code '12899', will now try the fallback translator
2013-06-19 09:27:56,159 [http-bio-8080-exec-1] DEBUG [org.springframework.jdbc.support.SQLStateSQLExceptionTranslator] - Extracted SQL state class '72' from value '72000'
2013-06-19 09:27:56,161 [http-bio-8080-exec-1] DEBUG [org.mybatis.spring.SqlSessionUtils] - Releasing transactional SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@1681460]
在更新时出现如上错误，
错误原因：由于oracle数据库中设置字符串长度为255时，当插入数据aaaaa未满时会以空格填充，在更新时，我们直接在字符串aaaaa后添加时，其位数超过255,在更新时不能成功，并报以上错误。
Exception in thread "main" org.springframework.jdbc.BadSqlGrammarException: SqlMapClient operation; bad SQL grammar []; nested exception is com.ibatis.common.jdbc.exception.NestedSQLException:
--- The error occurred in entity/TabB.xml.
--- The error occurred while applying a parameter map.
--- Check the tab_b.insert-InlineParameterMap.
--- Check the statement (update failed).
--- Cause: java.sql.SQLException: ORA-00942: 表或视图不存在
环境:数据库oracle11g,
ibatis的TabB.xml中对应数据库中的表，在运行时不能自动创建，所以只能手动在Oracle中创建表。
Java代码
java.lang.ExceptionInInitializerError
at tools.Test.clinit(Test.java:10)
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sqlSessionFactory' defined in class path resource [applicationContext-all.xml]: Invocation of init method failed; nested exception is org.springframework.core.NestedIOException: Failed to parse mapping resource: 'file [E:\eclipsejuno\eclipse\workspaces\smartcity\smartcity-mybatis\target\classes\org\smartcity\db1\entity\TabAMapper.xml]'; nested exception is java.lang.RuntimeException: Error parsing Mapper XML. Cause: java.lang.IllegalArgumentException: Mapped Statements collection already contains value for db1.taba.insert
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1422)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:518)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:455)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:293)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:290)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:192)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:567)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:895)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:425)
at org.springframework.context.support.ClassPathXmlApplicationContext.init(ClassPathXmlApplicationContext.java:139)
at org.springframework.context.support.ClassPathXmlApplicationContext.init(ClassPathXmlApplicationContext.java:83)
at tools.ApplicationContextUtils.rebuildApplicationContext(ApplicationContextUtils.java:21)
at tools.ApplicationContextUtils.clinit(ApplicationContextUtils.java:12)
... 1 more
Caused by: org.springframework.core.NestedIOException: Failed to parse mapping resource: 'file [E:\eclipsejuno\eclipse\workspaces\smartcity\smartcity-mybatis\target\classes\org\smartcity\db1\entity\TabAMapper.xml]'; nested exception is java.lang.RuntimeException: Error parsing Mapper XML. Cause: java.lang.IllegalArgumentException: Mapped Statements collection already contains value for db1.taba.insert
at org.mybatis.spring.SqlSessionFactoryBean.buildSqlSessionFactory(SqlSessionFactoryBean.java:462)
at org.mybatis.spring.SqlSessionFactoryBean.afterPropertiesSet(SqlSessionFactoryBean.java:336)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1479)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1419)
... 14 more
Caused by: java.lang.RuntimeException: Error parsing Mapper XML. Cause: java.lang.IllegalArgumentException: Mapped Statements collection already contains value for db1.taba.insert
at org.apache.ibatis.builder.xml.XMLMapperBuilder.configurationElement(XMLMapperBuilder.java:113)
at org.apache.ibatis.builder.xml.XMLMapperBuilder.parse(XMLMapperBuilder.java:88)
at org.mybatis.spring.SqlSessionFactoryBean.buildSqlSessionFactory(SqlSessionFactoryBean.java:460)
... 17 more
Caused by: java.lang.IllegalArgumentException: Mapped Statements collection already contains value for db1.taba.insert
at org.apache.ibatis.session.Configuration$StrictMap.put(Configuration.java:760)
at org.apache.ibatis.session.Configuration$StrictMap.put(Configuration.java:732)
at org.apache.ibatis.session.Configuration.addMappedStatement(Configuration.java:562)
at org.apache.ibatis.builder.MapperBuilderAssistant.addMappedStatement(MapperBuilderAssistant.java:307)
at org.apache.ibatis.builder.xml.XMLStatementBuilder.parseStatementNode(XMLStatementBuilder.java:109)
at org.apache.ibatis.builder.xml.XMLMapperBuilder.buildStatementFromContext(XMLMapperBuilder.java:128)
at org.apache.ibatis.builder.xml.XMLMapperBuilder.buildStatementFromContext(XMLMapperBuilder.java:121)
at org.apache.ibatis.builder.xml.XMLMapperBuilder.configurationElement(XMLMapperBuilder.java:111)
... 19 more
import javax.media.ControllerEvent;
import javax.media.ControllerListener;
import javax.media.EndOfMediaEvent;
import javax.media.PrefetchCompleteEvent;
import javax.media.RealizeCompleteEvent;
import javax.media.*;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class MediaPlayer extends JFrame implements ActionListener,
ItemListener, ControllerListener {
String title;
Player player;
boolean first = true, loop = false;
Component vc, cc;
String currentDirectory=null;
// 构造函数，其中包括了设置响应窗口事件的监听器。
MediaPlayer(String title) {
super(title);
/* 关闭按钮的实现。。 */
addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
dispose();
}
public void windowClosed(WindowEvent e) {
if (player != null)
player.close();
System.exit(0);
}
});
// 调用程序菜单栏的方法成员完成菜单的布置
setupMenu();
setSize(400, 400);
setVisible(true);
}
// 本方法用以设置程序菜单栏
public void setupMenu() {
// 设置一个菜单
Menu f = new Menu("文件");
// 往设置的菜单添加菜单项
MenuItem mi = new MenuItem("打开");
f.add(mi);
mi.addActionListener(this);
f.addSeparator();
CheckboxMenuItem cbmi = new CheckboxMenuItem("循环", false);
cbmi.addActionListener(this);
f.add(cbmi);
f.addSeparator();
MenuItem ee = new MenuItem("退出");
ee.addActionListener(this);
f.add(ee);
f.addSeparator();
Menu l = new Menu("播放列表");
Menu c = new Menu("播放控制");
MenuItem move = new MenuItem("播放");
move.addActionListener(this);
c.add(move);
c.addSeparator();
MenuItem pause = new MenuItem("暂停");
pause.addActionListener(this);
c.add(pause);
c.addSeparator();
MenuItem stop = new MenuItem("停止");
stop.addActionListener(this);
c.add(stop);
c.addSeparator();
// 设置一个菜单栏
MenuBar mb = new MenuBar();
mb.add(f);
mb.add?;
mb.add(l);
// 将构造完成的菜单栏交给当前程序的窗口;
setMenuBar(mb);
}
// 动作时间响应成员；捕捉发送到本对象的各种事件;
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
String cufile, selectfile, currentDirectory;
if (e.getActionCommand().equals("退出")) {
// 调用dispose以便执行windowClosed
dispose();
return;
}
// 此事表明拥护选择了“播放”命令;
// 如果当前有一个文件可以播放则执行播放命令;
if (e.getActionCommand().equals("播放")) {
if (player != null) {
player.start();
}
return;
}
// 如果当前正在播放某一文件，则执行暂停;
if (e.getActionCommand().equals("暂停")) {
if (player != null) {
player.stop();
}
return;
}
// 停止命令的响应;
if (e.getActionCommand().equals("停止")) {
if (player != null) {
player.stop();
player.setMediaTime(new Time(0));
}
return;
}
// 用户选择要播放的媒体文件
if (e.getActionCommand().equals("打开")) {
FileDialog fd = new FileDialog(this, "打开媒体文件", FileDialog.LOAD);
// fd.setDirectory(currentDirectory);
2008-2-6 02:46 回复
肆方茉莉
62位粉丝
6楼
fd.setVisible(true);
// 如果用户放弃选择文件，则返回
if (fd.getFile() == null) {
return;
}
// 保存了所选文件的名称及其路径名称已被稍后使用
// 同时设置当前文件夹路径
selectfile = fd.getFile();
currentDirectory = fd.getDirectory();
cufile = currentDirectory + selectfile;
// 将用户选择的文件作为一个菜单项加入播放列表,该菜单项名为该文件名;
// 被点击后给出的命令串是该文件的全路径名
MenuItem mi = new MenuItem(selectfile);
mi.setActionCommand(cufile);
MenuBar mb = getMenuBar();
Menu m = mb.getMenu(2);
mi.addActionListener(this);
m.add(mi);
} else {
// 程序逻辑运行到次表示用户选择了一个“播放列表”中的媒体文件
// 此时可以通过如下动作获得该文件的全路径名
cufile = e.getActionCommand();
selectfile = cufile;
}
// 如果存在一个播放器，则先将其关闭，稍后再重新创建
// 创建播放器时需要捕捉一些异常
if (player != null) {
player.close();
}
try {
player = Manager.createPlayer(new MediaLocator("file:" + cufile));
} catch (Exception e2) {
System.out.println(e2);
return;
}/*
* catch(NoPlayerException e2){ System.out.println("不能找到播放器");
* return ; }
*/
if (player == null) {
System.out.println("无法创建播放器");
return;
}
first = false;
setTitle(selectfile);
// 设置处理播放控制器实际的对象；
/**/
player.addControllerListener(this);
player.prefetch();
}
// 菜单状态改变事件的响应函数；
public void itemStateChanged(ItemEvent arg0) {
// TODO Auto-generated method stub
}
public static void main(String[] args) {
// TODO Auto-generated method stub
new MediaPlayer("播放器");
}
// 调用绘图函数进行界面的绘制 // public void update() {
// }
// 绘图函数成员 //public void paint(Graphics g) {
// }
public void controllerUpdate(ControllerEvent e) {
// TODO Auto-generated method stub
Container tainer = getContentPane();
// 调用player.close()时ControllerClosedEvent事件出现
// 如果存在视觉部件，则该部件应该拆除（为了一致起见，我们对控制面版部件也执行同样的操作，下一次需要时再构造)
if (e instanceof ControllerClosedEvent) {
if (vc != null) {
remove(vc);
vc = null;
}
if (cc != null) {
remove(cc);
cc = null;
}
}
// 播放结束时，将播放指针置于文件之首，如果设定了循环播放，则再次启动播放器；
if (e instanceof EndOfMediaEvent) {
player.setMediaTime(new Time(0));
if (loop) {
player.start();
}
return;
}
// PrefetchCompletEvent事件发生后调用start,正式启动播放
if (e instanceof PrefetchCompleteEvent) {
player.start();
return;
}
// 本事件表示由于播放的资源已经确定；此时要将媒体的图形conmopnent
// 如果有显示出来，同时将播放器player的控制显示到窗口里；
if (e instanceof RealizeCompleteEvent) {
// 如果媒体中有图像，将对应图像component载入窗体；
vc = player.getVisualComponent();
if (vc != null)
tainer.add(vc, BorderLayout.CENTER);
// 将对应控制器component载入窗体;
cc = player.getControlPanelComponent();
cc.setBackground(Color.blue);
if (cc != null)
tainer.add(cc, BorderLayout.SOUTH);
// 有一些特殊媒体在播放时提供另外的控制手段，将控制器一并加入窗口；
/*
* gc=player.getGainControl(); gcc=gc.getControlComponent();
* if(gcc!=null) tainer.add(gcc,BorderLayout.NORTH);
*/
// 根据媒体文件中是否有图像，设定相应的窗口大小
if (vc != null) {
pack();
return;
} else {
setSize(300, 75);
setVisible(true);
return;
}
}
} }
