package com.ask.test;

public class Test16to2 {
 public static void main(String[] args) {
  String a = Integer.valueOf("E4E2C4",16).toString();
  System.out.println("16进制数据”E4E2C4“对应的10进制数据是：" + a);
  String b = Integer.toBinaryString(Integer.parseInt(a));
  System.out.println("16进制数据”E4E2C4“对应的2进制数据是：" + b);
 }
}

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<Elements   xmlns="http://www.163.com"   xmlns:dc="http://www.163.com"> 
       <test>
          <title> 标题 </title>    
       </test> 
</Elements>

SAXReader saxReader = new SAXReader();     
Document document = saxReader.read(new File(filename));    

HashMap xmlMap = new HashMap();   
xmlMap.put("plugins","http://www.163.com");   //假设的命名空间
XPath x = document.createXPath("//plugins:test/plugins:title");   //读取二级节点，研究了半天
x.setNamespaceURIs(xmlMap);            
Element valueElement = (Element)x.selectSingleNode(document);   
System.out.println(valueElement.getText());   //输出该节点内容

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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.2//EN" "http://java.sun.com/dtd/web-app_2_2.dtd">

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN" "http://java.sun.com/dtd/web-app_2_3.dtd">

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" version="2.4" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee   http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" version="2.5" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee   http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">

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import java.util.*;
import java.io.*;

public class LoadSample {
    public static void main(String args[]) throws Exception {
      Properties prop = new Properties();
      FileInputStream fis = 
        new FileInputStream("sample.properties");
      prop.load(fis);
      prop.list(System.out);
      System.out.println("\nThe foo property: " +
          prop.getProperty("foo"));
    }
}

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE properties SYSTEM "http://java.sun.com/dtd/properties.dtd">
<properties>
<comment>Hi</comment>
<entry key="foo">bar</entry>
<entry key="fu">baz</entry>
</properties>

import java.util.*;
import java.io.*;

public class LoadSampleXML {
    public static void main(String args[]) throws Exception {
      Properties prop = new Properties();
      FileInputStream fis =
        new FileInputStream("sampleprops.xml");
      prop.loadFromXML(fis);
      prop.list(System.out);
      System.out.println("\nThe foo property: " +
          prop.getProperty("foo"));
    }
}

import java.util.*;
import java.io.*;

public class StoreXML {
    public static void main(String args[]) throws Exception {
      Properties prop = new Properties();
      prop.setProperty("one-two", "buckle my shoe");
      prop.setProperty("three-four", "shut the door");
      prop.setProperty("five-six", "pick up sticks");
      prop.setProperty("seven-eight", "lay them straight");
      prop.setProperty("nine-ten", "a big, fat hen");
      FileOutputStream fos =
        new FileOutputStream("rhyme.xml");
      prop.storeToXML(fos, "Rhyme");
      fos.close();
    }
}

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE properties SYSTEM "http://java.sun.com/dtd/properties.dtd">
<properties>
<comment>Rhyme</comment>
<entry key="seven-eight">lay them straight</entry>
<entry key="five-six">pick up sticks</entry>
<entry key="nine-ten">a big, fat hen</entry>
<entry key="three-four">shut the door</entry>
<entry key="one-two">buckle my shoe</entry>
</properties>

import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.Properties;
/**
* 实现properties文件的读取
* @author bbflyerwww
* @date 2006-08-02
*/
public class PTest {
      public static void main(String[] args) {
          try {
              long start = System.currentTimeMillis();
              InputStream is = new FileInputStream("conf.properties");
              Properties p = new Properties();
              p.load(is);
              is.close();
              System.out.println("SIZE : " + p.size());
              System.out.println("homepage : " + p.getProperty("homepage"));
              System.out.println("author : " + p.getProperty("author"));
              System.out.println("school : " + p.getProperty("school"));
              System.out.println("date : " + p.getProperty("date"));
              long end = System.currentTimeMillis(); 
              System.out.println("Cost : " + (end - start));
          } catch (IOException ioe) {
              ioe.printStackTrace();
          }
      }
}

# Configuration fileauthor = bbflyerwww
school = WuHan University
date = 2006-08-02

SIZE:4
author : bbflyerwww
school : WuHan University
date : 2006-08-02
Cost : 0

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/*
 * Created on Dec 30, 2007
 *
 * To change the template for this generated file go to
 * Window>Preferences>Java>Code Generation>Code and Comments
 */
package JExcelTest.standard;

import java.io.*; 
import jxl.*; 
import jxl.write.*; 

/**
 * @author Ken
 *
 * To change the template for this generated type comment go to
 * Window>Preferences>Java>Code Generation>Code and Comments
 */
public class CreateXLS {

	public static void main(String[] args) {
		try {
			//open file.
			WritableWorkbook book =	Workbook.createWorkbook(new File("d:/Test.xls"));
			
			//create Sheet named "Sheet_1". 0 means this is 1st page.
			WritableSheet sheet = book.createSheet("Sheet_1", 0);
			
			//define cell column and row in Label Constructor, and cell content write "test".
			//cell is 1st-Column,1st-Row. value is "test".
			Label label = new Label(0, 0, "test");
			//add defined cell above to sheet instance.
			sheet.addCell(label);
			
			//create cell using add numeric. WARN:necessarily use integrated package-path, otherwise will be throws path-error.
			//cell is 2nd-Column, 1st-Row. value is 789.123.
			jxl.write.Number number = new jxl.write.Number(1, 0, 789.123);
			//add defined cell above to sheet instance.
			sheet.addCell(number);
			
			//add defined all cell above to case.
			book.write();
			//close file case.
			book.close();
		} catch (Exception e) {
			e.printStackTrace();
		}
	}
}

/*
 * Created on Dec 30, 2007
 *
 * To change the template for this generated file go to
 * Window>Preferences>Java>Code Generation>Code and Comments
 */
package JExcelTest.standard;

import java.io.*;
import jxl.*;

/**
 * @author Ken
 *
 * To change the template for this generated type comment go to
 * Window>Preferences>Java>Code Generation>Code and Comments
 */
public class ReadXLS {

	public static void main(String[] args) {
		try {
			Workbook book = Workbook.getWorkbook(new File("d:/Test.xls"));
			//get a Sheet object. 
			Sheet sheet = book.getSheet(0);
			//get 1st-Column,1st-Row content.
			Cell cell = sheet.getCell(0, 0);
			String result = cell.getContents();
			System.out.println(result);
			book.close();
		} catch (Exception e) {
			e.printStackTrace();
		}

	}
}

/*
 * Created on Dec 30, 2007
 *
 * To change the template for this generated file go to
 * Window>Preferences>Java>Code Generation>Code and Comments
 */
package JExcelTest.standard;

import java.io.*;
import jxl.*;
import jxl.write.*;

/**
 * @author Ken
 *
 * To change the template for this generated type comment go to
 * Window>Preferences>Java>Code Generation>Code and Comments
 */
public class UpdateXLS {

	public static void main(String[] args) {
		try {
			//get file.
			Workbook wb = Workbook.getWorkbook(new File("d:/Test.xls"));
			//open a copy file(new file), then write content with same content with Test.xls.  
			WritableWorkbook book =
				Workbook.createWorkbook(new File("d:/Test.xls"), wb);
			//add a Sheet.
			WritableSheet sheet = book.createSheet("Sheet_2", 1);
			sheet.addCell(new Label(0, 0, "test2"));
			book.write();
			book.close();
		} catch (Exception e) {
			e.printStackTrace();
		}
	}
}

public static void write()throws Exception{
        WritableWorkbook wwb=Workbook.createWorkbook(new File("c:/1.xls"));
        WritableSheet ws=wwb.createSheet("Test Sheet 1",0);
        File file=new File("C:\\jbproject\\PVS\\WebRoot\\weekhit\\1109496996281.png");
        WritableImage image=new WritableImage(1, 4, 6, 18,file);
        ws.addImage(image);
        wwb.write();
        wwb.close();
    }

String path="c:\\excel.xls";//Excel文件URL
InputStream is = new FileInputStream(path);//写入到FileInputStream
jxl.Workbook wb = Workbook.getWorkbook(is); //得到工作薄 
jxl.Sheet st = wb.getSheet(0);//得到工作薄中的第一个工作表
Cell cell=st.getCell(0,0);//得到工作表的第一个单元格,即A1
String content=cell.getContents();//getContents()将Cell中的字符转为字符串
wb.close();//关闭工作薄
is.close();//关闭输入流

OutputStream os=new FileOutputStream("c:\\test.xls");//输出的Excel文件URL
WritableWorkbook wwb = Workbook.createWorkbook(os);//创建可写工作薄
WritableSheet ws = wwb.createSheet("sheet1", 0);//创建可写工作表
Label labelCF=new Label(0, 0, "hello");//创建写入位置和内容
ws.addCell(labelCF);//将Label写入sheet中
Label的构造函数Label(int x, int y,String aString)xy意同读的时候的xy,aString是写入的内容.
WritableFont wf = new WritableFont(WritableFont.TIMES, 12, WritableFont.BOLD, false);//设置写入字体
WritableCellFormat wcfF = new WritableCellFormat(wf);//设置CellFormat
Label labelCF=new Label(0, 0, "hello");//创建写入位置,内容和格式
Label的另一构造函数Label(int c, int r, String cont, CellFormat st)可以对写入内容进行格式化,设置字体及其它的属性.
现在可以写了
wwb.write();
写完后关闭
wwb.close();
输出流也关闭吧
os.close;

sql = "select * from tablename";
rs = stmt.executeQuery(sql);

//新建Excel文件
String filePath=request.getRealPath("aaa.xls");
File myFilePath=new File(filePath);
if(!myFilePath.exists())
myFilePath.createNewFile();
FileWriter resultFile=new FileWriter(myFilePath);
PrintWriter myFile=new PrintWriter(resultFile);
resultFile.close();

        //用JXL向新建的文件中添加内容
    OutputStream outf = new FileOutputStream(filePath);
        jxl.write.WritableWorkbook wwb = Workbook.createWorkbook(outf);
        jxl.write.WritableSheet ws = wwb.createSheet("sheettest", 0);

int i=0;
        int j=0;

for (int k = 0; k < rs.getMetaData().getColumnCount(); k++) {
    ws.addCell(new Label(k,0,rs.getMetaData().getColumnName(k+1)));
}

while(rs.next()){
    out.println(rs.getMetaData().getColumnCount());

for (int k = 0; k < rs.getMetaData().getColumnCount(); k++) {
ws.addCell(new Label(k,j+i+1,rs.getString(k+1)));
    }  

 i++;
}
wwb.write();
    wwb.close();
}catch(Exception e){e.printStackTrace();}
finally{

rs.close();
conn.close();
}

response.sendRedirect("aaa.xls"); 

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package example;

@Stateless
public class TestSessionBean implements TestSessionLocal{
public void xxxx(){

　　　　System.out.println("hello");　　

　　}
}

Context ctx = new InitialContext();
TestSessionLocalHome home = (TestSessionLocalHome)ctx.lookup("java:comp/env/ejb/TestSession");
TestSessionLocal bean = home.create();

bean.xxxx();//真正目的 对象使用

 @EJB //注意这里后面是空白
private TestSessionLocal testbean; //使用接口声明

public void invoke(){
　　testbean.xxxx(); //直接使用

}

@EJB(
name = “ejb/shopping-cart”,//被调用者Cart实现类的ejb-reference名称
beanName = “cart1”, //被调用者的名称 beanName
beanInterface = ShoppingCart.class, //接口名称
description = “The shopping cart for this application”
)
private Cart myCart;

<persistence>
　　<persistence-unit name="Ejb3Tutorial">
　　　　<jta-data-source>java:/TestDS</jta-data-source>
　　　　<properties>
　　　　　　<property name="hibernate.hbm2ddl.auto" value="create-drop"/>
　　　　</properties>
　　</persistence-unit>
</persistence>

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# Set the enterprise logger category to FATAL and its only appender to CONSOLE.
log4j.rootLogger=info,CONSOLE,FILE

# CONSOLE is set to be a ConsoleAppender using a PatternLayout.
log4j.appender.CONSOLE=org.apache.log4j.ConsoleAppender
log4j.appender.CONSOLE.Threshold=INFO
log4j.appender.CONSOLE.layout=org.apache.log4j.PatternLayout
log4j.appender.CONSOLE.layout.ConversionPattern=- %m%n

# LOGFILE is set to be a File appender using a PatternLayout.
log4j.appender.LOGFILE=org.apache.log4j.FileAppender
log4j.appender.LOGFILE.File=axis.log
log4j.appender.LOGFILE.Append=true
log4j.appender.LOGFILE.Threshold=INFO
log4j.appender.LOGFILE.layout=org.apache.log4j.PatternLayout
log4j.appender.LOGFILE.layout.ConversionPattern=%-4r [%t] %-5p %c %x - %m%n

#input log to file.
log4j.appender.FILE=org.apache.log4j.RollingFileAppender
log4j.appender.FILE.File=d:/log4j.log
log4j.appender.FILE.MaxFileSize=10mb
log4j.appender.FILE.MaxBackupIndex=3
log4j.appender.FILE.layout=org.apache.log4j.PatternLayout
log4j.appender.FILE.layout.ConversionPattern=%d %5p  (%F:%L) - %m%n

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public abstract class AddressEJB implements EntityBean {
	private EntityContext context = null;

	// getters and setters for PO CMP fields

	public abstract String getFirstName();
	public abstract void setFirstName(String name);
	public abstract String getLastName();
	public abstract void setLastName(String name);
	public abstract String getStreet1();
	public abstract void setStreet1(String name);
	public abstract String getStreet2();
	public abstract void setStreet2(String name);
	public abstract String getCity();
	public abstract void setCity(String name);
	public abstract String getState();
	public abstract void setState(String name);
	public abstract String getCountry();
	public abstract void setCountry(String name);
	public abstract String getZip();
	public abstract void setZip(String name);

	public Object ejbCreate(
		String fName,
		String lName,
		String s1,
		String s2,
		String cy,
		String st,
		String cnty,
		String pcode)
		throws CreateException {
		setFirstName(fName);
		setLastName(lName);
		setStreet1(s1);
		setStreet2(s2);
		setCity(cy);
		setState(st);
		setCountry(cnty);
		setZip(pcode);
		return null;
	}

	public void ejbPostCreate(
		String fName,
		String lName,
		String street1,
		String street2,
		String city,
		String state,
		String country,
		String zip)
		throws CreateException {
	}
	public void setEntityContext(EntityContext c) {
		context = c;
	}
	public void unsetEntityContext() {
	}
	public void ejbRemove() throws RemoveException {
	}
	public void ejbActivate() {
	}
	public void ejbPassivate() {
	}
	public void ejbStore() {
	}
	public void ejbLoad() {
	}
}

<entity>
　　<display-name>AddressEJB</display-name>
　　<ejb-name>AddressEJB</ejb-name>
　　<local-home>com.sun.j2ee.blueprints.address.ejb.AddressLocalHome</local-home>
　　<local>com.sun.j2ee.blueprints.address.ejb.AddressLocal</local>
　　<ejb-class>com.sun.j2ee.blueprints.address.ejb.AddressEJB</ejb-class>
　　<persistence-type>Container</persistence-type>
　　<prim-key-class>java.lang.Object</prim-key-class>
　　<reentrant>False</reentrant>
　　<cmp-version>2.x</cmp-version>
　　<abstract-schema-name>Address</abstract-schema-name>


　　<cmp-field>
　　　　<field-name>firstName</field-name>
　　</cmp-field>
　　<cmp-field>
　　　　<field-name>lastName</field-name>
　　</cmp-field>
　　<cmp-field>
　　　　<field-name>street1</field-name>
　　</cmp-field>
　　<cmp-field>
　　　　<field-name>street2</field-name>
　　</cmp-field>
　　<cmp-field>
　　　　<field-name>city</field-name>
　　</cmp-field>
　　<cmp-field>
　　　　<field-name>state</field-name>
　　</cmp-field>
　　<cmp-field>
　　　　<field-name>country</field-name>
　　</cmp-field>
　　<cmp-field>
　　　　<field-name>zip</field-name>
　　</cmp-field>


　　<security-identity>
　　　　<description></description>
　　　　<use-caller-identity></use-caller-identity>
　　</security-identity>

</entity>

public Object ejbCreate(
	String fName,
	String lName,
	String s1,
	String s2,
	String cy,
	String st,
	String cnty,
	String pcode)
	throws CreateException {

	// insert row into database
	this.fName = fName;
	this.lName = lName;
	this.s1 = s1;
	this.s2 = s2;
	this.cy = cy;
	this.st = st;
	this.cnty = cnty;
	this.pcode = pcode;

	// Insert database record
	try {
		Connection connection = getConnection();
		PreparedStatement statement =
			connection.prepareStatement(
				"INSERT INTO Address (firstName,lastName,street1,street2,city,state，country,zip) VALUES (?, ?, ?,?,?,?)");
		statement.setString(1, fName);
		statement.setString(2, lName);
		statement.setString(3, pcode);
		statement.setString(4, s1);
		statement.setString(5, s2);
		statement.setString(6, st);
		statement.setString(7, cy);
		statement.setString(8, cnty);
		if (statement.executeUpdate() != 1) {
			statement.close();
			connection.close();
			throw new CreateException("Could not create: ");
		}
		statement.close();
		connection.close();
	} catch (SQLException e) {
		throw new EJBException("Could not create: ");
	}
}

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<data-sources>   
    <data-source key="datasource" type="org.apache.commons.dbcp.BasicDataSource">   
      <set-property property="password" value="db2admin" />   
      <set-property property="minCount" value="3" />   
      <set-property property="maxCount" value="10" />   
      <set-property property="username" value="db2admin" />   
      <set-property property="driverClassName" 
                        value="COM.ibm.db2.jdbc.net.DB2Driver"/>   
      <set-property property="description" value="test" />   
      <set-property property="url" 
                        value="jdbc:db2://localhost:6789/DB2ADMIN.TEST" />   
      <set-property property