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//-------------------------------可以将图片等比例缩小 //========还学到了获得图片的宽,高 BufferedImage im = ImageIO.read(new File("E:\\Vista.jpg"));  width = im.getWidth();    height =im.getHeight();  //=============================== package com.Utils; import java.awt.image.BufferedImage; import java.i ...
package com.email.util; public class BBCODE {   //    // [img code="1.jpg"][img code="2.jpg"]   // <img src="1.jpg" /><img src="2.jpg" />   public static String filter(String code){     //加粗...   code  = code.replaceAll("(\ ...

BigDecimal 的学习

package com.util; import java.math.BigDecimal; /** * * BigDecimal(String)是把一个以String表示的BigDecimal对象构造为BigDecimal对象实例。 习惯上,对于浮点数我们都会定义为double或float,但BigDecimal API文档中对于BigDecimal(double)有这么一段话: Note: the results of this constructor can be somewhat unpredictable. One might assume that new BigDec ...
package com.util; public class RMB { private final static String[] CN_Digits = { "零", "壹", "貳", "叁", "肆", "伍", "陆", "柒", "捌", "玖", }; /** * 将数字型货币转换为中文型货币 <br/> 作者:wallimn 时间:2009-4-10  ...
每次访问jsp页面都出现下面异常; org.apache.jasper.JasperException: Unable to compile class for JSP: An error occurred at line: 23 in the generated java file The method getJspApplicationContext(ServletContext) is undefined for the type JspFactory //所有jsp都不能编译,不能显示;;; //包冲突 //jsp 工作  servlet-api.jar jsp-api.jar  [ ...
单例模式的七种写法 文章分类:Java编程 转载请注明出处:http://cantellow.iteye.com/blog/838473 第一种(懒汉,线程不安全): Java代码    1. public class Singleton {     2.     private static Singleton instance;     3.      4.     public static Singleton getInstance() {     5.     if (instance == null) {     6.         instance = ...
package com.email.util; import java.io.File; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.InputStream; import java.util.ArrayList; import java.util.Enumeration; import java.util.List; import org.apache.tools.zip.ZipEntry; import org.apache.tools.zip.ZipFile; impor ...
package com.email.util; import java.io.UnsupportedEncodingException; import java.net.URLDecoder; import java.net.URLEncoder; import javax.servlet.http.Cookie; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; public final class CookiesUtils { public stat ...
import javax.servlet.http.HttpServletRequest; public final class ParameterUtils { public static boolean isNumber(String key){ if(key != null && key.length() > 0){ return key.matches("^[0-9]+$"); }else{ return false; } } /** * * @param request * @param k ...
import java.text.ParseException; import java.text.SimpleDateFormat; import java.util.Date; public final class DateUtils { public static Date strToDateYYYYMMDD(String str){ if(str == null)return null; SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd"); try { return sdf. ...
package com.Utils; import java.io.BufferedReader; import java.io.File; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.FileReader; import java.io.IOException; import java.io.InputStream; import java.util.Date; import java.util.Has ...
package com.Utils; import java.sql.Connection; import java.sql.DriverManager; import java.sql.PreparedStatement; import java.sql.ResultSet; import java.sql.ResultSetMetaData; import java.sql.SQLException; import java.sql.Statement; import java.sql.Timestamp; import java.util.ArrayList; import java.ut ...
package cn.java; import java.util.Properties; import javax.activation.DataHandler; import javax.activation.FileDataSource; import javax.mail.Address; import javax.mail.BodyPart; import javax.mail.Message; import javax.mail.Multipart; import javax.mail.Session; import javax.mail.Transport; import ja ...
package cn.java; import java.text.ParseException; import java.text.SimpleDateFormat; import java.util.Date; public final class DateUtils { public static Date strToDateYYYYMMDD(String str){ SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd"); try { return sdf.parse(str); ...
$.ajax({         type:"GET",          url:encodeURI(encodeURI("AJAXXmlServer")),         data:encodeURI(encodeURI("username="+username)),         dataType:"xml"  ,         success:callback     }); 1,页面端在传地址的时候用两次    encodeURI(encodeURI("username="+us ...
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