java 常用工具類 方法整理
java 常用工具類 方法整理
總結了下專案中常用的一些通用方法。
程式碼塊
package com.wemall.core.tools;
import com.sun.image.codec.jpeg.JPEGCodec;
import com.sun.image.codec.jpeg.JPEGEncodeParam;
import com.sun.image.codec.jpeg.JPEGImageEncoder;
import com.wemall.core.query.support.IPageList;
import com.wemall.foundation.domain.*;
import com.wemall.lucene.LuceneResult;
import org.jsoup.Jsoup;
import org.jsoup.safety.Whitelist;
import org.springframework.web.multipart.MultipartHttpServletRequest;
import org.springframework.web.multipart.commons.CommonsMultipartFile;
import org.springframework.web.servlet.ModelAndView;
import javax.imageio.ImageIO;
import javax.servlet.http.HttpServletRequest;
import javax.swing.*;
import java.awt.*;
import java.awt.geom.Rectangle2D;
import java.awt.image.BufferedImage;
import java.io.*;
import java.math.BigDecimal;
import java.net.URL;
import java.net.URLDecoder;
import java.net.URLEncoder;
import java.text.DecimalFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.*;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
/**
* 通用工具
*/
public class CommUtil {
private static final SimpleDateFormat dateFormat = new SimpleDateFormat(
"yyyy-MM-dd");
private static final Whitelist user_content_filter = Whitelist.relaxed();
static int totalFolder;
static int totalFile;
static {
user_content_filter.addTags(new String[] { "embed", "object", "param", "span", "div",
"font"
});
user_content_filter.addAttributes(":all", new String[] { "style", "class", "id",
"name"
});
user_content_filter.addAttributes("object", new String[] { "width", "height",
"classid", "codebase"
});
user_content_filter.addAttributes("param", new String[] { "name", "value" });
user_content_filter.addAttributes("embed", new String[] { "src", "quality", "width",
"height", "allowFullScreen", "allowScriptAccess", "flashvars",
"name", "type", "pluginspage"
});
totalFolder = 0;
totalFile = 0;
}
//轉小寫
public static String first2low(String str){
String s = "";
s = str.substring(0, 1).toLowerCase() + str.substring(1);
return s;
}
// 轉大寫
public static String first2upper(String str){
String s = "";
s = str.substring(0, 1).toUpperCase() + str.substring(1);
return s;
}
// 字元轉List
public static List<String> str2list(String s)
throws IOException {
List list = new ArrayList();
if ((s != null) && (!s.equals(""))){
StringReader fr = new StringReader(s);
BufferedReader br = new BufferedReader(fr);
String aline = "";
while ((aline = br.readLine()) != null){
list.add(aline);
}
}
return list;
}
// 格式化日期
public static Date formatDate(String s){
Date d = null;
try {
d = dateFormat.parse(s);
} catch (Exception localException){
}
return d;
}
// 格式化日期
public static Date formatDate(String s, String format){
Date d = null;
try {
SimpleDateFormat dFormat = new SimpleDateFormat(format);
d = dFormat.parse(s);
} catch (Exception localException){
}
return d;
}
// 格式化日期
public static String formatTime(String format, Object v){
if (v == null)
return null;
if (v.equals(""))
return "";
SimpleDateFormat df = new SimpleDateFormat(format);
return df.format(v);
}
// 格式化日期 轉為yyyy-MM-dd HH:mm:ss 格式
public static String formatLongDate(Object v){
if ((v == null) || (v.equals("")))
return "";
SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
return df.format(v);
}
// 格式化日期 轉為yyyy-MM-dd 格式
public static String formatShortDate(Object v){
if (v == null)
return null;
SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd");
return df.format(v);
}
// UTF-8解碼
public static String decode(String s){
String ret = s;
try {
ret = URLDecoder.decode(s.trim(), "UTF-8");
} catch (Exception localException){
}
return ret;
}
// UTF-8編碼
public static String encode(String s){
String ret = s;
try {
ret = URLEncoder.encode(s.trim(), "UTF-8");
} catch (Exception localException){
}
return ret;
}
public static String convert(String str, String coding){
String newStr = "";
if (str != null)
try {
newStr = new String(str.getBytes("ISO-8859-1"), coding);
} catch (Exception e){
return newStr;
}
return newStr;
}
/**
* 儲存檔案到伺服器
* @param request
* @param filePath
* @param saveFilePathName
* @param saveFileName
* @param extendes
* @return
* @throws IOException
*/
public static Map saveFileToServer(HttpServletRequest request, String filePath, String saveFilePathName, String saveFileName, String[] extendes)
throws IOException {
MultipartHttpServletRequest multipartRequest = (MultipartHttpServletRequest)request;
CommonsMultipartFile file = (CommonsMultipartFile)multipartRequest.getFile(filePath);
Map map = new HashMap();
if ((file != null) && (!file.isEmpty())){
String extend = file.getOriginalFilename().substring(file.getOriginalFilename().lastIndexOf(".") + 1).toLowerCase();
if ((saveFileName == null) || (saveFileName.trim().equals(""))){
saveFileName = UUID.randomUUID().toString() + "." + extend;
}
if (saveFileName.lastIndexOf(".") < 0){
saveFileName = saveFileName + "." + extend;
}
float fileSize = Float.valueOf((float)file.getSize()).floatValue();
List errors = new ArrayList();
boolean flag = true;
if (extendes != null){
for (String s : extendes){
if (extend.toLowerCase().equals(s)){
flag = true;
}
}
}
if (flag){
File path = new File(saveFilePathName);
if (!path.exists()){
path.mkdir();
}
SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMddHHmmss");
DataOutputStream out = new DataOutputStream(
new FileOutputStream(saveFilePathName + File.separator + saveFileName));
InputStream is = null;
try {
is = file.getInputStream();
int size = (int)fileSize;
byte[] buffer = new byte[size];
while (is.read(buffer) > 0)
out.write(buffer);
} catch (IOException exception){
exception.printStackTrace();
} finally {
if (is != null){
is.close();
}
if (out != null){
out.close();
}
}
if (isImg(extend)){
File img = new File(saveFilePathName + File.separator + saveFileName);
try {
BufferedImage bis = ImageIO.read(img);
int w = bis.getWidth();
int h = bis.getHeight();
map.put("width", Integer.valueOf(w));
map.put("height", Integer.valueOf(h));
} catch (Exception localException){
}
}
map.put("mime", extend);
map.put("fileName", saveFileName);
map.put("fileSize", Float.valueOf(fileSize));
map.put("error", errors);
map.put("oldName", file.getOriginalFilename());
}else{
errors.add("不允許的副檔名");
}
}else{
map.put("width", Integer.valueOf(0));
map.put("height", Integer.valueOf(0));
map.put("mime", "");
map.put("fileName", "");
map.put("fileSize", Float.valueOf(0.0F));
map.put("oldName", "");
}
return map;
}
//判斷是否是圖片格式
public static boolean isImg(String extend){
boolean ret = false;
List<String> list = new ArrayList<String>();
list.add("jpg");
list.add("jpeg");
list.add("bmp");
list.add("gif");
list.add("png");
list.add("tif");
for (String s : list){
if (s.equals(extend))
ret = true;
}
return ret;
}
public static final void waterMarkWithImage(String pressImg, String targetImg, int pos, float alpha){
try {
File _file = new File(targetImg);
Image src = ImageIO.read(_file);
int width = src.getWidth(null);
int height = src.getHeight(null);
BufferedImage image = new BufferedImage(width, height, 1);
Graphics2D g = image.createGraphics();
g.drawImage(src, 0, 0, width, height, null);
File _filebiao = new File(pressImg);
Image src_biao = ImageIO.read(_filebiao);
g.setComposite(AlphaComposite.getInstance(10, alpha / 100.0F));
int width_biao = src_biao.getWidth(null);
int height_biao = src_biao.getHeight(null);
int x = 0;
int y = 0;
if (pos == 2){
x = (width - width_biao) / 2;
y = 0;
}
if (pos == 3){
x = width - width_biao;
y = 0;
}
if (pos == 4){
x = width - width_biao;
y = (height - height_biao) / 2;
}
if (pos == 5){
x = width - width_biao;
y = height - height_biao;
}
if (pos == 6){
x = (width - width_biao) / 2;
y = height - height_biao;
}
if (pos == 7){
x = 0;
y = height - height_biao;
}
if (pos == 8){
x = 0;
y = (height - height_biao) / 2;
}
if (pos == 9){
x = (width - width_biao) / 2;
y = (height - height_biao) / 2;
}
g.drawImage(src_biao, x, y, width_biao, height_biao, null);
g.dispose();
FileOutputStream out = new FileOutputStream(targetImg);
JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);
encoder.encode(image);
out.close();
} catch (Exception e){
e.printStackTrace();
}
}
public static boolean createSmall(String source, String target, int width, int height){
try {
File sourceFile = new File(source);
File targetFile = new File(target);
BufferedImage bis = ImageIO.read(sourceFile);
int w = bis.getWidth();
int h = bis.getHeight();
int nw = width;
int nh = nw * h / w;
ImageCompress.ImageScale(source, target, width, height);
return true;
} catch (Exception e){
e.printStackTrace();
}
return false;
}
public static boolean createSmall_old(String source, String target, int width){
try {
File sourceFile = new File(source);
File targetFile = new File(target);
BufferedImage bis = ImageIO.read(sourceFile);
int w = bis.getWidth();
int h = bis.getHeight();
int nw = width;
int nh = nw * h / w;
ImageScale is = new ImageScale();
is.saveImageAsJpg(source, target, nw, nh);
return true;
} catch (Exception e){
e.printStackTrace();
}
return false;
}
public static boolean waterMarkWithText(String filePath, String outPath, String text, String markContentColor, Font font, int pos, float qualNum){
ImageIcon imgIcon = new ImageIcon(filePath);
Image theImg = imgIcon.getImage();
int width = theImg.getWidth(null);
int height = theImg.getHeight(null);
BufferedImage bimage = new BufferedImage(width, height, 1);
Graphics2D g = bimage.createGraphics();
if (font == null){
font = new Font("黑體", 1, 30);
g.setFont(font);
}else{
g.setFont(font);
}
g.setColor(getColor(markContentColor));
g.setBackground(Color.white);
g.drawImage(theImg, 0, 0, null);
FontMetrics metrics = new FontMetrics(font){
};
Rectangle2D bounds = metrics.getStringBounds(text, null);
int widthInPixels = (int)bounds.getWidth();
int heightInPixels = (int)bounds.getHeight();
int left = 0;
int top = heightInPixels;
if (pos == 2){
left = width / 2;
top = heightInPixels;
}
if (pos == 3){
left = width - widthInPixels;
top = heightInPixels;
}
if (pos == 4){
left = width - widthInPixels;
top = height / 2;
}
if (pos == 5){
left = width - widthInPixels;
top = height - heightInPixels;
}
if (pos == 6){
left = width / 2;
top = height - heightInPixels;
}
if (pos == 7){
left = 0;
top = height - heightInPixels;
}
if (pos == 8){
left = 0;
top = height / 2;
}
if (pos == 9){
left = width / 2;
top = height / 2;
}
g.drawString(text, left, top);
g.dispose();
try {
FileOutputStream out = new FileOutputStream(outPath);
JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);
JPEGEncodeParam param = encoder.getDefaultJPEGEncodeParam(bimage);
param.setQuality(qualNum, true);
encoder.encode(bimage, param);
out.close();
} catch (Exception e){
return false;
}
return true;
}
//建立資料夾
public static boolean createFolder(String folderPath){
boolean ret = true;
try {
File myFilePath = new File(folderPath);
if ((!myFilePath.exists()) && (!myFilePath.isDirectory())){
ret = myFilePath.mkdirs();
if (!ret)
System.out.println("建立資料夾出錯");
}
} catch (Exception e){
System.out.println("建立資料夾出錯");
ret = false;
}
return ret;
}
public static List toRowChildList(List list, int perNum){
List l = new ArrayList();
if (list == null){
return l;
}
for (int i = 0; i < list.size(); i += perNum){
List cList = new ArrayList();
for (int j = 0; j < perNum; j++)
if (i + j < list.size())
cList.add(list.get(i + j));
l.add(cList);
}
return l;
}
public static List copyList(List list, int begin, int end){
List l = new ArrayList();
if (list == null)
return l;
if (end > list.size())
end = list.size();
for (int i = begin; i < end; i++){
l.add(list.get(i));
}
return l;
}
//判斷是否null ""
public static boolean isNotNull(Object obj){
return (obj != null) && (!obj.toString().equals(""));
}
//複製檔案
public static void copyFile(String oldPath, String newPath){
try {
int bytesum = 0;
int byteread = 0;
File oldfile = new File(oldPath);
if (oldfile.exists()){
InputStream inStream = new FileInputStream(oldPath);
FileOutputStream fs = new FileOutputStream(newPath);
byte[] buffer = new byte[1444];
while ((byteread = inStream.read(buffer)) != -1){
bytesum += byteread;
fs.write(buffer, 0, byteread);
}
inStream.close();
}
} catch (Exception e){
System.out.println("複製單個檔案操作出錯 ");
e.printStackTrace();
}
}
//刪除檔案
public static boolean deleteFolder(String path){
boolean flag = false;
File file = new File(path);
if (!file.exists()){
return flag;
}
if (file.isFile()){
return deleteFile(path);
}
return deleteDirectory(path);
}
public static boolean deleteFile(String path){
boolean flag = false;
File file = new File(path);
if ((file.isFile()) && (file.exists())){
file.delete();
flag = true;
}
return flag;
}
public static boolean deleteDirectory(String path){
if (!path.endsWith(File.separator)){
path = path + File.separator;
}
File dirFile = new File(path);
if ((!dirFile.exists()) || (!dirFile.isDirectory())){
return false;
}
boolean flag = true;
File[] files = dirFile.listFiles();
for (int i = 0; i < files.length; i++){
if (files[i].isFile()){
flag = deleteFile(files[i].getAbsolutePath());
if (!flag)
break;
}else{
flag = deleteDirectory(files[i].getAbsolutePath());
if (!flag)
break;
}
}
if (!flag){
return false;
}
return dirFile.delete();
}
public static String showPageStaticHtml(String url, int currentPage, int pages){
String s = "";
if (pages > 0){
if (currentPage >= 1){
s = s + "<a href='" + url + "_1.htm'>首頁</a> ";
if (currentPage > 1){
s = s + "<a href='" + url + "_" + (currentPage - 1) +
".htm'>上一頁</a> ";
}
}
int beginPage = currentPage - 3 < 1 ? 1 : currentPage - 3;
if (beginPage <= pages){
s = s + "第 ";
int i = beginPage;
for (int j = 0; (i <= pages) && (j < 6); j++){
if (i == currentPage)
s = s + "<a class='this' href='" + url + "_" + i +
".htm'>" + i + "</a> ";
else
s = s + "<a href='" + url + "_" + i + ".htm'>" + i +
"</a> ";
i++;
}
s = s + "頁 ";
}
if (currentPage <= pages){
if (currentPage < pages){
s = s + "<a href='" + url + "_" + (currentPage + 1) +
".htm'>下一頁</a> ";
}
s = s + "<a href='" + url + "_" + pages + ".htm'>末頁</a> ";
}
}
return s;
}
public static String showPageHtml(String url, String params, int currentPage, int pages){
String s = "";
if (pages > 0){
if (currentPage >= 1){
s = s + "<a href='" + url + "?currentPage=1" + params +
"'>首頁</a> ";
if (currentPage > 1){
s = s + "<a href='" + url + "?currentPage=" + (
currentPage - 1) + params + "'>上一頁</a> ";
}
}
int beginPage = currentPage - 3 < 1 ? 1 : currentPage - 3;
if (beginPage <= pages){
s = s + "第 ";
int i = beginPage;
for (int j = 0; (i <= pages) && (j < 6); j++){
if (i == currentPage)
s = s + "<a class='this' href='" + url + "?currentPage=" +
i + params + "'>" + i + "</a> ";
else
s = s + "<a href='" + url + "?currentPage=" + i + params +
"'>" + i + "</a> ";
i++;
}
s = s + "頁 ";
}
if (currentPage <= pages){
if (currentPage < pages){
s = s + "<a href='" + url + "?currentPage=" + (
currentPage + 1) + params + "'>下一頁</a> ";
}
s = s + "<a href='" + url + "?currentPage=" + pages + params +
"'>末頁</a> ";
}
}
return s;
}
public static String showPageFormHtml(int currentPage, int pages){
String s = "";
if (pages > 0){
if (currentPage >= 1){
s = s + "<a href='javascript:void(0);' onclick='return gotoPage(1)'>首頁</a> ";
if (currentPage > 1){
s = s + "<a href='javascript:void(0);' onclick='return gotoPage(" + (
currentPage - 1) + ")'>上一頁</a> ";
}
}
int beginPage = currentPage - 3 < 1 ? 1 : currentPage - 3;
if (beginPage <= pages){
s = s + "第 ";
int i = beginPage;
for (int j = 0; (i <= pages) && (j < 6); j++){
if (i == currentPage)
s = s + "<a class='this' href='javascript:void(0);' onclick='return gotoPage(" +
i + ")'>" + i + "</a> ";
else
s = s + "<a href='javascript:void(0);' onclick='return gotoPage(" +
i +
")'>" + i + "</a> ";
i++;
}
s = s + "頁 ";
}
if (currentPage <= pages){
if (currentPage < pages){
s = s + "<a href='javascript:void(0);' onclick='return gotoPage(" + (
currentPage + 1) + ")'>下一頁</a> ";
}
s = s + "<a href='javascript:void(0);' onclick='return gotoPage(" +
pages + ")'>末頁</a> ";
}
}
return s;
}
public static String showPageAjaxHtml(String url, String params, int currentPage, int pages){
String s = "";
if (pages > 0){
String address = url + "?1=1" + params;
if (currentPage >= 1){
s = s + "<a href='javascript:void(0);' onclick='return ajaxPage(\"" +
address + "\",1,this)'>首頁</a> ";
s = s + "<a href='javascript:void(0);' onclick='return ajaxPage(\"" +
address +
"\"," + (
currentPage - 1) +
",this)'>上一頁</a> ";
}
int beginPage = currentPage - 3 < 1 ? 1 : currentPage - 3;
if (beginPage <= pages){
s = s + "第 ";
int i = beginPage;
for (int j = 0; (i <= pages) && (j < 6); j++){
if (i == currentPage)
s = s + "<a class='this' href='javascript:void(0);' onclick='return ajaxPage(\"" +
address +
"\"," +
i +
",this)'>" +
i +
"</a> ";
else
s = s + "<a href='javascript:void(0);' onclick='return ajaxPage(\"" +
address + "\"," + i +
",this)'>" + i + "</a> ";
i++;
}
s = s + "頁 ";
}
if (currentPage <= pages){
s = s + "<a href='javascript:void(0);' onclick='return ajaxPage(\"" +
address +
"\"," + (
currentPage + 1) +
",this)'>下一頁</a> ";
s = s + "<a href='javascript:void(0);' onclick='return ajaxPage(\"" +
address + "\"," + pages + ",this)'>末頁</a> ";
}
}
return s;
}
public static void saveWebPaths(Map<String, Object> map, SysConfig config, HttpServletRequest request){
String contextPath = request.getContextPath().equals("/") ? "" : request.getContextPath();
String webPath = CommUtil.getURL(request, config);
String port = ":" + CommUtil.null2Int(Integer.valueOf(request.getServerPort()));
if ((config.isSecond_domain_open()) && (!CommUtil.generic_domain(request).equals("localhost"))){
webPath = "http://www." + CommUtil.generic_domain(request) + port + contextPath;
}
if(config.getSite_url() != null && !"".equalsIgnoreCase(config.getSite_url())){
webPath = config.getSite_url() + contextPath;
}
map.put("domainPath", CommUtil.generic_domain(request));
map.put("webPath", webPath);
if ((config.getImageWebServer() != null) && (!config.getImageWebServer().equals(""))){
map.put("imageWebServer", config.getImageWebServer());
}else{
map.put("imageWebServer", webPath);
}
map.put("goodsImagePath", config.getGoodsImage().getPath());
map.put("goodsImageName", config.getGoodsImage().getName());
map.put("IsSecondDomainOpen", config.isSecond_domain_open());
}
public static void saveLucene2Map(String type, LuceneResult pList, Map<String, Object> map){
if (pList != null){
map.put("totalPage", Integer.valueOf(pList.getPages()));
map.put("pageSize", Integer.valueOf(pList.getPageSize()));
map.put("rows", Integer.valueOf(pList.getRows()));
map.put("currentPage", new Integer(pList.getCurrentPage()));
map.put("ajaxLoadHtml", showLoadGoodsAjaxHtml(pList.getGoods_list(), map));
}
}
public static void saveLucene2ModelAndView(String type, LuceneResult pList, ModelAndView mv){
if (pList != null){
if (type.equals("goods")){
mv.addObject("objs", pList.getGoods_list());
}
if (type.equals("store")){
mv.addObject("objs", pList.getStore_list());
}
mv.addObject("totalPage", Integer.valueOf(pList.getPages()));
mv.addObject("pageSize", Integer.valueOf(pList.getPageSize()));
mv.addObject("rows", Integer.valueOf(pList.getRows()));
mv.addObject("currentPage", new Integer(pList.getCurrentPage()));
mv.addObject("gotoPageFormHTML", showPageFormHtml(pList.getCurrentPage(), pList.getPages()));
}
}
public static void saveIPageList2Map(String url, String staticURL, String params, IPageList pList, Map<String, Object> map){
if (pList != null){
map.put("totalPage", new Integer(pList.getPages()));
map.put("pageSize", Integer.valueOf(pList.getPageSize()));
map.put("rows", new Integer(pList.getRowCount()));
map.put("currentPage", new Integer(pList.getCurrentPage()));
if("brand_goods".equalsIgnoreCase(String.valueOf(map.get("show")))){
map.put("ajaxLoadHtml", showBrandGoodsAjaxHtml(pList.getResult(), map));
}else if("orders".equalsIgnoreCase(String.valueOf(map.get("show")))){
map.put("ajaxLoadHtml", showOrdersAjaxHtml(pList.getResult(), map));
}
}
}
public static void saveIPageList2ModelAndView(String url, String staticURL, String params, IPageList pList, ModelAndView mv){
if (pList != null){
mv.addObject("objs", pList.getResult());
mv.addObject("totalPage", new Integer(pList.getPages()));
mv.addObject("pageSize", Integer.valueOf(pList.getPageSize()));
mv.addObject("rows", new Integer(pList.getRowCount()));
mv.addObject("currentPage", new Integer(pList.getCurrentPage()));
mv.addObject("gotoPageHTML", showPageHtml(url, params, pList.getCurrentPage(), pList.getPages()));
mv.addObject("gotoPageFormHTML", showPageFormHtml(pList.getCurrentPage(), pList.getPages()));
mv.addObject("gotoPageStaticHTML", showPageStaticHtml(staticURL, pList.getCurrentPage(), pList.getPages()));
mv.addObject("gotoPageAjaxHTML", showPageAjaxHtml(url, params, pList.getCurrentPage(), pList.getPages()));
}
}
public static char randomChar(){
char[] chars = { 'a', 'A', 'b', 'B', 'c', 'C', 'd', 'D',
'e', 'E', 'f', 'F', 'g', 'G', 'h', 'H', 'i', 'I', 'j', 'J',
'k', 'K', 'l', 'L', 'm', 'M', 'n', 'N', 'o', 'O', 'p', 'P',
'q', 'Q', 'r', 'R', 's', 'S', 't', 'T', 'u', 'U', 'v', 'V',
'w', 'W', 'x', 'X', 'y', 'Y', 'z', 'Z'
};
int index = (int)(Math.random() * 52.0D) - 1;
if (index < 0){
index = 0;
}
return chars[index];
}
public static String[] splitByChar(String s, String c){
String[] list = s.split(c);
return list;
}
public static Object requestByParam(HttpServletRequest request, String param){
if (!request.getParameter(param).equals("")){
return request.getParameter(param);
}
return null;
}
public static String substring(String s, int maxLength){
if (!StringUtils.hasLength(s))
return s;
if (s.length() <= maxLength){
return s;
}
return s.substring(0, maxLength) + "...";
}
public static String substringfrom(String s, String from){
if (s.indexOf(from) < 0)
return "";
return s.substring(s.indexOf(from) + from.length());
}
public static int null2Int(Object s){
int v = 0;
if (s != null)
try {
v = Integer.parseInt(s.toString());
} catch (Exception localException){
}
return v;
}
public static float null2Float(Object s){
float v = 0.0F;
if (s != null)
try {
v = Float.parseFloat(s.toString());
} catch (Exception localException){
}
return v;
}
public static double null2Double(Object s){
double v = 0.0D;
if (s != null)
try {
v = Double.parseDouble(null2String(s));
} catch (Exception localException){
}
return v;
}
public static boolean null2Boolean(Object s){
boolean v = false;
if (s != null)
try {
v = Boolean.parseBoolean(s.toString());
} catch (Exception localException){
}
return v;
}
public static String null2String(Object s){
return s == null ? "" : s.toString().trim();
}
public static Long null2Long(Object s){
Long v = Long.valueOf(-1L);
if (s != null)
try {
v = Long.valueOf(Long.parseLong(s.toString()));
} catch (Exception localException){
}
return v;
}
public static String getTimeInfo(long time){
int hour = (int)time / 3600000;
long balance = time - hour * 1000 * 60 * 60;
int minute = (int)balance / 60000;
balance -= minute * 1000 * 60;
int seconds = (int)balance / 1000;
String ret = "";
if (hour > 0)
ret = ret + hour + "小時";
if (minute > 0)
ret = ret + minute + "分";
else if ((minute <= 0) && (seconds > 0))
ret = ret + "零";
if (seconds > 0)
ret = ret + seconds + "秒";
return ret;
}
public static String getIpAddr(HttpServletRequest request){
String ip = request.getHeader("x-forwarded-for");
if ((ip == null) || (ip.length() == 0) || ("unknown".equalsIgnoreCase(ip))){
ip = request.getHeader("Proxy-Client-IP");
}
if ((ip == null) || (ip.length() == 0) || ("unknown".equalsIgnoreCase(ip))){
ip = request.getHeader("WL-Proxy-Client-IP");
}
if ((ip == null) || (ip.length() == 0) || ("unknown".equalsIgnoreCase(ip))){
ip = request.getRemoteAddr();
}
return ip;
}
public static int indexOf(String s, String sub){
return s.trim().indexOf(sub.trim());
}
public static Map cal_time_space(Date begin, Date end){
SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
long l = end.getTime() - begin.getTime();
long day = l / 86400000L;
long hour = l / 3600000L - day * 24L;
long min = l / 60000L - day * 24L * 60L - hour * 60L;
long second = l / 1000L - day * 24L * 60L * 60L - hour * 60L * 60L - min * 60L;
Map map = new HashMap();
map.put("day", Long.valueOf(day));
map.put("hour", Long.valueOf(hour));
map.put("min", Long.valueOf(min));
map.put("second", Long.valueOf(second));
return map;
}
public static final String randomString(int length){
char[] numbersAndLetters = "0123456789abcdefghijklmnopqrstuvwxyz0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ"
.toCharArray();
if (length < 1){
return "";
}
Random randGen = new Random();
char[] randBuffer = new char[length];
for (int i = 0; i < randBuffer.length; i++){
randBuffer[i] = numbersAndLetters[randGen.nextInt(71)];
}
return new String(randBuffer);
}
public static final String randomInt(int length){
if (length < 1){
return null;
}
Random randGen = new Random();
char[] numbersAndLetters = "0123456789".toCharArray();
char[] randBuffer = new char[length];
for (int i = 0; i < randBuffer.length; i++){
randBuffer[i] = numbersAndLetters[randGen.nextInt(10)];
}
return new String(randBuffer);
}
public static long getDateDistance(String time1, String time2){
long quot = 0L;
SimpleDateFormat ft = new SimpleDateFormat("yyyy-MM-dd");
try {
Date date1 = ft.parse(time1);
Date date2 = ft.parse(time2);
quot = date1.getTime() - date2.getTime();
quot = quot / 1000L / 60L / 60L / 24L;
} catch (ParseException e){
e.printStackTrace();
}
return quot;
}
public static double div(Object a, Object b){
double ret = 0.0D;
if ((!null2String(a).equals("")) && (!null2String(b).equals(""))){
BigDecimal e = new BigDecimal(null2String(a));
BigDecimal f = new BigDecimal(null2String(b));
if (null2Double(f) > 0.0D)
ret = e.divide(f, 3, 1).doubleValue();
}
DecimalFormat df = new DecimalFormat("0.00");
return Double.valueOf(df.format(ret)).doubleValue();
}
public static double subtract(Object a, Object b){
double ret = 0.0D;
BigDecimal e = new BigDecimal(null2Double(a));
BigDecimal f = new BigDecimal(null2Double(b));
ret = e.subtract(f).doubleValue();
DecimalFormat df = new DecimalFormat("0.00");
return Double.valueOf(df.format(ret)).doubleValue();
}
public static double add(Object a, Object b){
double ret = 0.0D;
BigDecimal e = new BigDecimal(null2Double(a));
BigDecimal f = new BigDecimal(null2Double(b));
ret = e.add(f).doubleValue();
DecimalFormat df = new DecimalFormat("0.00");
return Double.valueOf(df.format(ret)).doubleValue();
}
public static double mul(Object a, Object b){
BigDecimal e = new BigDecimal(null2Double(a));
BigDecimal f = new BigDecimal(null2Double(b));
double ret = e.multiply(f).doubleValue();
DecimalFormat df = new DecimalFormat("0.00");
return Double.valueOf(df.format(ret)).doubleValue();
}
public static double formatMoney(Object money){
DecimalFormat df = new DecimalFormat("0.00");
return Double.valueOf(df.format(money)).doubleValue();
}
public static int M2byte(float m){
float a = m * 1024.0F * 1024.0F;
return (int)a;
}
public static boolean convertIntToBoolean(int intValue){
return intValue != 0;
}
public static String getURL(HttpServletRequest request){
String contextPath = request.getContextPath().equals("/") ? "" : request.getContextPath();
String url = "http://" + request.getServerName();
if (null2Int(Integer.valueOf(request.getServerPort())) != 80)
url = url + ":" + null2Int(Integer.valueOf(request.getServerPort())) + contextPath;
else{
url = url + contextPath;
}
return url;
}
public static String getURL(HttpServletRequest request, SysConfig config){
String contextPath = request.getContextPath().equals("/") ? "" : request.getContextPath();
String url = "http://" + request.getServerName();
if (null2Int(Integer.valueOf(request.getServerPort())) != 80)
url = url + ":" + null2Int(Integer.valueOf(request.getServerPort())) + contextPath;
else{
url = url + contextPath;
}
if(config.getSite_url() != null && !"".equalsIgnoreCase(config.getSite_url())){
if(!"/".equalsIgnoreCase(contextPath))
url = config.getSite_url() + contextPath;
else
url = config.getSite_url();
}
return url;
}
public static String filterHTML(String content){
Whitelist whiteList = new Whitelist();
String s = Jsoup.clean(content, user_content_filter);
return s;
}
public static int parseDate(String type, Date date){
Calendar cal = Calendar.getInstance();
cal.setTime(date);
if (type.equals("y")){
return cal.get(1);
}
if (type.equals("M")){
return cal.get(2) + 1;
}
if (type.equals("d")){
return cal.get(5);
}
if (type.equals("H")){
return cal.get(11);
}
if (type.equals("m")){
return cal.get(12);
}
if (type.equals("s")){
return cal.get(13);
}
return 0;
}
public static int[] readImgWH(String imgurl){
boolean b = false;
try {
URL url = new URL(imgurl);
BufferedInputStream bis = new BufferedInputStream(
url.openStream());
byte[] bytes = new byte[100];
OutputStream bos = new FileOutputStream(
new File("C:\\thetempimg.gif"));
int len;
while ((len = bis.read(bytes)) > 0){
bos.write(bytes, 0, len);
}
bis.close();
bos.flush();
bos.close();
b = true;
} catch (Exception e){
b = false;
}
int[] a = new int[2];
if (b){
File file = new File("C:\\thetempimg.gif");
BufferedImage bi = null;
boolean imgwrong = false;
try {
bi = ImageIO.read(file);
try {
int i = bi.getType();
imgwrong = true;
} catch (Exception e){
imgwrong = false;
}
} catch (IOException ex){
ex.printStackTrace();
}
if (imgwrong){
a[0] = bi.getWidth();
a[1] = bi.getHeight();
}else{
a = null;
}
file.delete();
}else{
a = null;
}
return a;
}
public static boolean del_acc(HttpServletRequest request, Accessory acc){
boolean ret = true;
boolean ret1 = true;
if (acc != null){
String path = request.getRealPath("/") + acc.getPath() +
File.separator + acc.getName();
String small_path = request.getRealPath("/") + acc.getPath() +
File.separator + acc.getName() + "_small." + acc.getExt();
ret = deleteFile(path);
ret1 = deleteFile(small_path);
}
return (ret) && (ret1);
}
public static boolean fileExist(String path){
File file = new File(path);
return file.exists();
}
public static int splitLength(String s, String c){
int v = 0;
if (!s.trim().equals("")){
v = s.split(c).length;
}
return v;
}
public static double fileSize(File folder){
totalFolder += 1;
long foldersize = 0L;
File[] filelist = folder.listFiles();
for (int i = 0; i < filelist.length; i++){
if (filelist[i].isDirectory()){
foldersize = (long)(foldersize + fileSize(filelist[i]));
}else{
totalFile += 1;
foldersize += filelist[i].length();
}
}
return div(Long.valueOf(foldersize), Integer.valueOf(1024));
}
public static int fileCount(File file){
if (file == null){
return 0;
}
if (!file.isDirectory()){
return 1;
}
int fileCount = 0;
File[] files = file.listFiles();
for (File f : files){
if (f.isFile()){
fileCount++;
}else if (f.isDirectory()){
fileCount++;
fileCount += fileCount(file);
}
}
return fileCount;
}
public static String get_all_url(HttpServletRequest request){
String query_url = request.getRequestURI();
if ((request.getQueryString() != null) &&
(!request.getQueryString().equals(""))){
query_url = query_url + "?" + request.getQueryString();
}
return query_url;
}
public static Color getColor(String color){
if (color.charAt(0) == '#'){
color = color.substring(1);
}
if (color.length() != 6)
return null;
try {
int r = Integer.parseInt(color.substring(0, 2), 16);
int g = Integer.parseInt(color.substring(2, 4), 16);
int b = Integer.parseInt(color.substring(4), 16);
return new Color(r, g, b);
} catch (NumberFormatException nfe){
}
return null;
}
public static Set<Integer> randomInt(int a, int length){
Set list = new TreeSet();
int size = length;
if (length > a){
size = a;
}
while (list.size() < size){
Random random = new Random();
int b = random.nextInt(a);
list.add(Integer.valueOf(b));
}
return list;
}
public static Double formatDouble(Object obj, int len){
Double ret = Double.valueOf(0.0D);
String format = "0.0";
for (int i = 1; i < len; i++){
format = format + "0";
}
DecimalFormat df = new DecimalFormat(format);
return Double.valueOf(df.format(obj));
}
public static boolean isChinese(char c){
Character.UnicodeBlock ub = Character.UnicodeBlock.of(c);
return (ub == Character.UnicodeBlock.CJK_UNIFIED_IDEOGRAPHS) ||
(ub == Character.UnicodeBlock.CJK_COMPATIBILITY_IDEOGRAPHS) ||
(ub == Character.UnicodeBlock.CJK_UNIFIED_IDEOGRAPHS_EXTENSION_A) ||
(ub == Character.UnicodeBlock.GENERAL_PUNCTUATION) ||
(ub == Character.UnicodeBlock.CJK_SYMBOLS_AND_PUNCTUATION) ||
(ub == Character.UnicodeBlock.HALFWIDTH_AND_FULLWIDTH_FORMS);
}
public static boolean isMessyCode(String strName){
Pattern p = Pattern.compile("\\s*|\t*|\r*|\n*");
Matcher m = p.matcher(strName);
String after = m.replaceAll("");
String temp = after.replaceAll("\\p{P}", "");
char[] ch = temp.trim().toCharArray();
float chLength = ch.length;
float count = 0.0F;
for (int i = 0; i < ch.length; i++){
char c = ch[i];
if (Character.isLetterOrDigit(c))
continue;
if (!isChinese(c)){
count += 1.0F;
System.out.print(c);
}
}
float result = count / chLength;
return result > 0.4D;
}
public static String trimSpaces(String IP){
while (IP.startsWith(" ")){
IP = IP.substring(1, IP.length()).trim();
}
while (IP.endsWith(" ")){
IP = IP.substring(0, IP.length() - 1).trim();
}
return IP;
}
public static boolean isIp(String IP){
boolean b = false;
IP = trimSpaces(IP);
if (IP.matches("\\d{1,3}\\.\\d{1,3}\\.\\d{1,3}\\.\\d{1,3}")){
String[] s = IP.split("\\.");
if ((Integer.parseInt(s[0]) < 255) &&
(Integer.parseInt(s[1]) < 255) &&
(Integer.parseInt(s[2]) < 255) &&
(Integer.parseInt(s[3]) < 255))
b = true;
}
return b;
}
public static String generic_domain(HttpServletRequest request){
String system_domain = "localhost";
String serverName = request.getServerName();
if (isIp(serverName))
system_domain = serverName;
else{
system_domain = serverName.substring(serverName.indexOf(".") + 1);
}
return system_domain;
}
}
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