/*
* Created on Oct 25, 2006
*
*/
package com.infosoftglobal.fusioncharts;
import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import javax.servlet.http.HttpServletResponse;
/**
* Contains methods to add no cache string to a url,getting colors for the charts.<br>
* This class can be used to create chart xml given the swf filename and other<br>
* parameters.<br>
* In order to use this class in your jsps,import this class and<br>
* call the appropriate method directly as follows:<br>
* FusionChartsHelper.addCacheToDataURL(...);<br>
* In order to use this class for colors call the method as shown:<br>
* FusionChartsHelper helper = new FusionChartsHelper();<BR>
* String color = helper.getFCColor();<BR>
* @author InfoSoft Global (P) Ltd.
*/
public class FusionChartsHelper {
/*This page contains an array of colors to be used as default set of colors for FusionCharts
'arr_FCColors is the array that would contain the hex code of colors
'ALL COLORS HEX CODES TO BE USED WITHOUT #*/
//We also initiate a counter variable to help us cyclically rotate through
//the array of colors.
int FC_ColorCounter=0;
String[] arr_FCColors = new String[]{
"1941A5",
"AFD8F8",
"F6BD0F",
"8BBA00",
"A66EDD",
"F984A1",
"CCCC00",
"999999",
"0099CC",
"FF0000",
"006F00",
"0099FF",
"FF66CC",
"669966",
"7C7CB4",
"FF9933",
"9900FF",
"99FFCC",
"CCCCFF",
"669900",
};
/*
"1941A5"; //Dark Blue
"CCCC00"; //Chrome Yellow+Green
"999999"; //Grey
"0099CC"; //Blue Shade
"FF0000"; //Bright Red
"006F00"; //Dark Green
"0099FF"; //Blue (Light)
"FF66CC"; //Dark Pink
"669966"; //Dirty green
"7C7CB4"; //Violet shade of blue
"FF9933"; //Orange
"9900FF"; //Violet
"99FFCC";//Blue+Green Light
"CCCCFF"; //Light violet
"669900"; //Shade of green
*/
//getFCColor method helps return a color from arr_FCColors array. It uses
//cyclic iteration to return a color from a given index. The index value is
//maintained in FC_ColorCounter
public String getFCColor() {
//Update index
FC_ColorCounter += 1;
//Return color
return arr_FCColors[FC_ColorCounter % arr_FCColors.length];
}
/**
* Adds additional string to the url to and encodes the parameters,<br>
* so as to disable caching of data.<br>
* @param strDataURL -
* dataURL to be fed to chart
* @return cachedURL - URL with the additional string added
*/
public static String addCacheToDataURL(String strDataURL) {
String cachedURL = strDataURL;
// Add the no-cache string if required
// We add ?FCCurrTime=xxyyzz
// If the dataURL already contains a ?, we add &FCCurrTime=xxyyzz
// We replace : with _, as FusionCharts cannot handle : in URLs
Calendar nowCal = Calendar.getInstance();
Date now = nowCal.getTime();
SimpleDateFormat sdf = new SimpleDateFormat("MM/dd/yyyy HH_mm_ss a");
String strNow = sdf.format(now);
try {
if (strDataURL.indexOf("?") > 0) {
cachedURL = strDataURL + "&FCCurrTime="
+ URLEncoder.encode(strNow, "UTF-8");
} else {
cachedURL = strDataURL + "?FCCurrTime="
+ URLEncoder.encode(strNow, "UTF-8");
}
} catch (UnsupportedEncodingException e) {
// TODO Auto-generated catch block
e.printStackTrace();
cachedURL = strDataURL + "?FCCurrTime=" + strNow;
}
return cachedURL;
}
/**
* Encodes the dataURL before it's served to FusionCharts.
* If you have parameters in your dataURL, you necessarily need to encode it.
* @param strDataURL - dataURL to be fed to chart
* @param addNoCacheStr - Whether to add additional string to URL to disable caching of data
* @return String - the encoded URL
*/
public String encodeDataURL(String strDataURL, String addNoCacheStr,
HttpServletResponse response) {
String encodedURL = strDataURL;
//Add the no-cache string if required
if (addNoCacheStr.equals("true")) {
/*We add ?FCCurrTime=xxyyzz
If the dataURL already contains a ?, we add &FCCurrTime=xxyyzz
We send the date separated with '_', instead of the usual ':' as FusionCharts cannot handle : in URLs
*/
java.util.Calendar nowCal = java.util.Calendar.getInstance();
java.util.Date now = nowCal.getTime();
java.text.SimpleDateFormat sdf = new java.text.SimpleDateFormat(
"MM/dd/yyyy HH_mm_ss a");
String strNow = sdf.format(now);
if (strDataURL.indexOf("?") > 0) {
encodedURL = strDataURL + "&FCCurrTime=" + strNow;
} else {
strDataURL = strDataURL + "?FCCurrTime=" + strNow;
}
encodedURL = response.encodeURL(strDataURL);
}
return encodedURL;
}
}
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fusionchartsFlash图表(xml、支持多语言)
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2011-04-12
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介绍:FusionCharts特点及技巧 FusionCharts参数及功能特性详解实例 FusionCharts分类用法及高级特性(数据钻取、弹出窗口)
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