Fwd: OSWORKFLOW on JBOSS 4.22 Config.

1.download osworkflow 2.8,2006年以后已不再维护。
   http://java.net/downloads/osworkflow/

2.将osworkflow-2.8.0-example.war展开到jboss 422/server/default/deploy/osworkflow-2.8.0-example.war 目录下。

3.在MYSQL 上建立一个osworkflow的database,并运行osworkflow-2.8.0\src\etc\deployment\jdbc
 \mysql.sql，建立其需要使用的表格.
4.配置JBOSS 数据源
   在jboss 422/server/default/deploy/mysql-ds.xml里加入数据源:
   <!-- add for osworkflow datasorce -->
  <local-tx-datasource>
    <jndi-name>osworkflow</jndi-name>
   <connection-url>jdbc:mysql://192.1.1.100:3306/osworkflow?autoReconnect=true&amp;useUnicode=TRUE&amp;characterEncoding=utf-8</connection-url>
    <driver-class>com.mysql.jdbc.Driver</driver-class>
    <user-name>root</user-name>
    <password></password>
    <exception-sorter-class-name>org.jboss.resource.adapter.jdbc.vendor.MySQLExceptionSorter</exception-sorter-class-name>
        <min-pool-size>5</min-pool-size>
        <max-pool-size>10</max-pool-size>
        <idle-timeout-minutes>1</idle-timeout-minutes>
    <metadata>
       <type-mapping>mySQL</type-mapping>
    </metadata>
  </local-tx-datasource>

5.进入jboss 422/server/default/deploy/osworkflow-2.8.0-example.war/WEB-INF/classes下修改配置，加入数据源说明.
  注意Linux table name 有大小写的问题。

  osuser.xml:
<opensymphony-user>
   <provider class="com.opensymphony.user.provider.jdbc.JDBCAccessProvider">
  <property name="user.table">OS_USER</property>
  <property name="group.table">OS_GROUP</property>
  <property name="membership.table">OS_MEMBERSHIP</property>
  <property name="user.name" >username</property>
  <property name="user.password">passwordhash</property>
  <property name="group.name">groupname</property>
  <property name="membership.userName" >username</property>
  <property name="membership.groupName">groupname</property>
  <property name="datasource">java:/osworkflow</property>
</provider>

<provider class="com.opensymphony.user.provider.jdbc.JDBCCredentialsProvider">
 <property name="user.table">OS_USER</property>
  <property name="group.table">OS_GROUP</property>
  <property name="membership.table">OS_MEMBERSHIP</property>
<property name="user.name" >username</property>
  <property name="user.password">passwordhash</property>
  <property name="group.name">groupname</property>
  <property name="membership.userName" >username</property>
  <property name="membership.groupName">groupname</property>
  <property name="datasource">java:/osworkflow</property>
 </provider>

    <provider class="com.opensymphony.user.provider.jdbc.JDBCProfileProvider">
 <property name="user.table">OS_USER</property>
  <property name="group.table">OS_GROUP</property>
  <property name="membership.table">OS_MEMBERSHIP</property>
<property name="user.name" >username</property>
  <property name="user.password">passwordhash</property>
  <property name="group.name">groupname</property>
  <property name="membership.userName" >username</property>
  <property name="membership.groupName">groupname</property>
  <property name="datasource">java:/osworkflow</property>
 </provider>

 <authenticator class="com.opensymphony.user.authenticator.SmartAuthenticator" />

</opensymphony-user>

osworkflow.xml:
<osworkflow>
    <!--persistence class="com.opensymphony.workflow.spi.memory.MemoryWorkflowStore"/-->
    <persistence class="com.opensymphony.workflow.spi.jdbc.MySQLWorkflowStore">
 <property key="datasource" value="java:/osworkflow"/>
<property key="entry.sequence"
                      value="SELECT max(id)+1 FROM OS_WFENTRY"/>
 <property key="entry.table" value="OS_WFENTRY"/>
 <property key="entry.id" value="ID"/>
 <property key="entry.name" value="NAME"/>
 <property key="entry.state" value="STATE"/>
 <property key="step.sequence"  value="SELECT max(ID)+1 FROM OS_STEPIDS"/>

 <property key="step.sequence.increment"    value="INSERT INTO OS_STEPIDS (ID) values (null)"/>
 <property key="step.sequence.retrieve"   value="SELECT max(ID) FROM OS_STEPIDS"/>
 <property key="entry.sequence.increment" value="INSERT INTO OS_ENTRYIDS (ID) values (null)"/>
 <property key="entry.sequence.retrieve" value="SELECT max(ID) FROM OS_ENTRYIDS"/>

 <property key="history.table" value="OS_HISTORYSTEP"/>
 <property key="current.table" value="OS_CURRENTSTEP"/>
 <property key="historyPrev.table" value="OS_HISTORYSTEP_PREV"/>
 <property key="currentPrev.table" value="OS_CURRENTSTEP_PREV"/>
 <property key="step.id" value="ID"/>
 <property key="step.entryId" value="ENTRY_ID"/>
 <property key="step.stepId" value="STEP_ID"/>
 <property key="step.actionId" value="ACTION_ID"/>
 <property key="step.owner" value="OWNER"/>
 <property key="step.caller" value="CALLER"/>
 <property key="step.startDate" value="START_DATE"/>
 <property key="step.finishDate" value="FINISH_DATE"/>
 <property key="step.dueDate" value="DUE_DATE"/>
 <property key="step.status" value="STATUS"/>
 <property key="step.previousId" value="PREVIOUS_ID"/>
</persistence>
    <factory class="com.opensymphony.workflow.loader.XMLWorkflowFactory">
        <property key="resource" value="workflows.xml" />
    </factory>
</osworkflow>

 propertyset.xml:
<propertysets>
 <propertyset name="jdbc" class="com.opensymphony.module.propertyset.database.JDBCPropertySet">
  <arg name="table.name" value="OS_PROPERTYENTRY"/>
  <arg name="col.globalKey" value="GLOBAL_KEY"/>
  <arg name="col.itemKey" value="ITEM_KEY"/>
  <arg name="col.itemType" value="ITEM_TYPE"/>
  <arg name="col.string" value="STRING_VALUE"/>
  <arg name="col.date" value="DATE_VALUE"/>
  <arg name="col.data" value="DATA_VALUE"/>
  <arg name="col.float" value="FLOAT_VALUE"/>
  <arg name="col.number" value="NUMBER_VALUE"/>
  <arg name="datasource" value="java:/osworkflow"/>
  <arg name="" value=""/>
 </propertyset>
</propertysets>

至此配置完成，启动JBOSS,从浏览器输入:
http://192.168.1.1:8080/osworkflow-2.8.0-example/

即可查看.

Android如何确认一个Intent是否存在呢？

 /**
     * Indicates whether the specified action can be used as an intent. This
     * method queries the package manager for installed packages that can
     * respond to an intent with the specified action. If no suitable package is
     * found, this method returns false.
     *
     * @param context The application's environment.
     * @param action The Intent action to check for availability.
     *
     * @return True if an Intent with the specified action can be sent and
     * responded to, false otherwise.
     *  Example:isIntentAvailable(getApplicationContext(),Intent.ACTION_WEB_SEARCH)
     */
    public static boolean isIntentAvailable(Context context, String action) {
    final PackageManager packageManager = context.getPackageManager();
    final Intent intent = new Intent(action);
    List<ResolveInfo> list =
    packageManager.queryIntentActivities(intent,
    PackageManager.MATCH_DEFAULT_ONLY);
    return list.size() > 0;
    }

Android动态改变语言并自动刷新菜单.

Locale locale=null;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        String languageToLoad  = "zh";
         locale = new Locale(languageToLoad);
        Locale.setDefault(locale);
        Configuration config = new Configuration();
        config.locale = locale;
        getBaseContext().getResources().updateConfiguration(config, null);
        //getBaseContext().getResources().getDisplayMetrics()
        Log.v("log:","local is changed!");
        setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
        setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
        setContentView(R.layout.activity_main);
         }

Andorid xml is binary format in .apk package

All of the resource XML files are compiled to a binary format by aapt at build time.
只有一个例外就是 res/raw下的文件是原始文件，没有做任何处理。

Activity的getString和Activity.getResource().getString的区别是什么呢？

activity的getString下的说明如此：
 localized string from the application's package's default string table

Resource的getString说明如下:
Returns the string value associated with a particular resource ID. It will be stripped of any styled text information

但是查看源代码，发现activity的getString如下:
    public final String getString(int resId) {
        return getResources().getString(resId);
    }

其实是一回事。真不明白为什么说明差异如此之大。

Android classpath access external resource.

Resources.getSystem().getString(android.R.string.somecommonstuff)
  

如何禁止wxWidgets 2.9.x Debug信息

wxWidgets 2.9.1 debugging features are always available by default
在wx/debug.h 里设置
wxDEBUG_LEVEL=0

然后从新编译所有的库文件，再编译应用代码。

REM 清除所有的库文件
mingw32-make -f makefile.gcc  SHARED=0 UNICODE=1 BUILD=release MONOLITHIC=0  USE_STC=0 USE_PROPGRID=1 USE_GUI=1 clean

REM 重新编译所有库
mingw32-make -f makefile.gcc  SHARED=0 UNICODE=1 BUILD=release MONOLITHIC=0  USE_STC=0 USE_PROPGRID=1 USE_GUI=1

禁止 wxWidgets 2.9 调试信息弹出

wxWidgets 2.9.1 debugging features are always available by default

定义wxDEBUG_LEVEL=0 在 IMPLEMENT_APP()  代码前。

Dynamic load css definition file.

var CSS = {

        load: /*static*/ function (url_, /*optional*/ media_) {

                // We are preventing loading a file already loaded
                var _links = document.getElementsByTagName("link");
                if (_links.length > 0 && _links["href"] == url_) return;

                // Optional parameters check
                var _media = media_ === undefined || media_ === null ? "all" : media_;
               
                var _elstyle = document.createElement("link");
                _elstyle.setAttribute("rel", "stylesheet");
                _elstyle.setAttribute("type", "text/css");
                _elstyle.setAttribute("media", _media);
                _elstyle.setAttribute("href", url_);

                var _head = document.getElementsByTagName("head")[0];
                _head.element.appendChild(_elstyle);

        }

};

如何用SVG显示汉字。只需要注意HTML需要用UTF-8格式保存即可.

<html> 
<body> 
<p><canvas id="canvas" style="border:2px solid black;" width="200" height="200"></canvas> 
<script> 
var canvas = document.getElementById("canvas"); 
var ctx = canvas.getContext("2d"); 
var data = "<svg xmlns='http://www.w3.org/2000/svg' width='200' height='200'>" + 
             "<foreignObject width='100%' height='100%'>" + 
               "<div xmlns='http://www.w3.org/1999/xhtml' style='font-size:40px;color:red'>" + 
                 "<em>I</em> like <span style='color:white; text-shadow:0 0 2px blue;'>网络的上面</span>" + 
               "</div>" + 
             "</foreignObject>" + 
           "</svg>"; 
var svg = new (self.BlobBuilder || self.MozBlobBuilder || self.WebKitBlobBuilder); 
var DOMURL = self.URL || self.webkitURL || self; 
var img = new Image(); 
svg.append(data); 
var url = DOMURL.createObjectURL(svg.getBlob("image/svg+xml;charset=utf-8")); 
img.onload = function() { 
    ctx.drawImage(img, 0, 0); 
    DOMURL.revokeObjectURL(url); 
}; 
img.src = url; 
</script> 
</body> 
</html>

tcpdump debug http traffic and dns query.

tcpdump -vvv -s 0 -l port 53

windump -i \Device\NPF_{CDF6DEBB-8C8E-49EF-91D5-CF6A69F1FE81} -n port 80 or port 443 or port 53

adb shell tcpdump -i  wlan0 -n port 80 or port 443 or port 53

Android memory usage

2.名词解释
App：Application
VSS - Virtual Set Size 虚拟耗用内存（包含共享库占用的内存）
RSS - Resident Set Size 实际使用物理内存（包含共享库占用的内存）
PSS - Proportional Set Size 实际使用的物理内存（比例分配共享库占用的内存）
USS - Unique Set Size 进程独自占用的物理内存（不包含共享库占用的内存）

tcpdump syntax

http://danielmiessler.com/study/tcpdump/

POI 3.7如何实现cell的填充颜色。

类似Excel 右上角填充颜色的效果。
必须在setCellValue之后，再调用setCellStyle的语句。
顺序不能错误，否则效果不如意。
        style = wb.createCellStyle();
        style.setFillForegroundColor(HSSFColor.YELLOW.index);
        style.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND);
        cell = row.createCell((short) 2);
        cell.setCellValue("X");
        cell.setCellStyle(style);

如何在JSP里实现Streaming content，流失内容，让内容逐渐显示

<%@page buffer="none"%>
2.在out.println一些之后使用out.flush().

这样在浏览器内就显示出来效果了，逐渐显示，而不是全部一下显示了。

如何制作Android显示百分比数字的状态条。

main.xml

<?xml version="1.0" encoding="utf-8"?>
<!--  -->
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="30dip"
android:padding="0dip"
>
<ProgressBar android:id="@+id/progress"
style="?android:attr/progressBarStyleHorizontal"
android:layout_width="fill_parent"
android:indeterminateOnly="false"
android:layout_height="30dip"  />
<TextView
android:id="@+id/perc"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:textColor="#ff0000"
android:textStyle="bold"
/>
</RelativeLayout>

代码：
package wxk.com;

import android.app.Activity;
import android.os.Bundle;
import android.os.Message;
import android.widget.ProgressBar;
import android.widget.TextView;
import android.app.Activity;
import android.os.Bundle;
import android.os.Handler;
public class ThreadDemoActivity extends Activity {
    ProgressBar bar;
    TextView percent;
    Handler handler=new Handler() {
    @Override
    public void handleMessage(Message msg) {
    bar.incrementProgressBy(5);
    percent.setText(String.format("%03d%%", bar.getProgress()));
    }
    };
    boolean isRunning=false;
    @Override
    public void onCreate(Bundle icicle) {
    super.onCreate(icicle);
    setContentView(R.layout.main);
    bar=(ProgressBar)findViewById(R.id.progress);
    percent=(TextView)findViewById(R.id.perc);
    }
    public void onStart() {
    super.onStart();
    bar.setProgress(0);

    Thread background=new Thread(new Runnable() {
    public void run() {
    try {
    for (int i=0;i<20 && isRunning;i++) {
    Thread.sleep(1000);
    handler.sendMessage(handler.obtainMessage());
    }
    }
    catch (Throwable t) {
    // just end the background thread
    }
    }
    });
    isRunning=true;
    background.start();
    }
    public void onStop() {
    super.onStop();
    isRunning=false;
    }
}

Keyboard Shortcuts for Bash ( Command Shell for Ubuntu, Debian, Suse, Redhat, Linux, etc)

Keyboard Shortcuts for Bash ( Command Shell for Ubuntu, Debian, Suse, Redhat, Linux, etc)

The default shell on most Linux operating systems is called Bash. There are a couple of important hotkeys that you should get familiar with if you plan to spend a lot of time at the command line. These shortcuts will save you a ton of time if you learn them. 

 

Ctrl + A	Go to the beginning of the line you are currently typing on
Ctrl + E	Go to the end of the line you are currently typing on
Ctrl + L	Clears the Screen, similar to the clear command
Ctrl + U	Clears the line before the cursor position. If you are at the end of the line, clears the entire line.
Ctrl + H	Same as backspace
Ctrl + R	Let's you search through previously used commands
Ctrl + C	Kill whatever you are running
Ctrl + D	Exit the current shell
Ctrl + Z	Puts whatever you are running into a suspended background process. fg restores it.
Ctrl + W	Delete the word before the cursor
Ctrl + K	Clear the line after the cursor
Ctrl + T	Swap the last two characters before the cursor
Esc + T	Swap the last two words before the cursor
Alt + F	Move cursor forward one word on the current line
Alt + B	Move cursor backward one word on the current line
Tab	Auto-complete files and folder names

html 模拟终端效果 style.

pre {
display: block;
width: 95%;
background: #222;
border-left: 6px solid #1664d9;
color: #0c0;
padding: 10px;
overflow:auto;
}

Linux查询网络连接并搜索统计。

lsof -i4 |grep -c -E '10.1.11.12|10.1.11.24'
grep -E 选项可以同时搜索多个字符串，用符号 |隔开。

lsof -i4 只显示TCP IPV4的记录，也就是网络连接数目了。

Android repo sync hang

可以利用:
repo --debug sync -j 12
来看看错误原因。
往往需要多次同步才可以。