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JAVA STRING UTIL

/**
     * 字符串替换，将 source 中的 oldString 全部换成 newString
     *
     * @param source 源字符串
     * @param oldString 老的字符串
     * @param newString 新的字符串
     * @return 替换后的字符串
     */
    public static String replaceStr(String source, String oldString, String newString) {
        StringBuffer output = new StringBuffer();

int lengthOfSource = source.length(); // 源字符串长度
int lengthOfOld = oldString.length(); // 老字符串长度

int posStart = 0; // 开始搜索位置
int pos; // 搜索到老字符串的位置

while ((pos = source.indexOf(oldString, posStart)) >= 0) {
output.append(source.substring(posStart, pos));

            output.append(newString);
            posStart = pos + lengthOfOld;
        }

if (posStart < lengthOfSource) {
 output.append(source.substring(posStart));
 }

        return output.toString();
    }
public static void main(String[] args) {
  System.out.println(replaceIgnoreCase("War is wAr and waR and war","war","[start]","[end]"));
  System.out.println(replaceIgnoreCase("","war","[start]","[end]"));
  System.out.println(replaceIgnoreCase("Warsdf","war","[start]","[end]"));
  System.out.println(replaceIgnoreCase("sdfWar","war","[start]","[end]"));
}

/**
* 2007-7-30 added by lxs
* 将原有的字符串按照需要的长度显示,超出的长度用..代替。
* 给定的长度应包含2位..的长度数。
*/
/*
*0x3400->13312->'?' 0x9FFF->40959->? 0xF900->63744->?
*
**/
public static String getPointStr(String str,int length){
  if(str==null || "".equals(str)){
   return "";
  }
  if(getStrLength(str)>length){
   str=getLeftStr(str,length-2);
  }
  return str;
}

public static String getLeftStr(String str,int length){

 if(str == null || "".equals(str)){
 return "";
 }
 int index = 0;

 char[] charArray = str.toCharArray();
 for(;index<length; index++){
 if(((charArray[index]>=0x3400)&&(charArray[index]<0x9FFF))||(charArray[index]>=0xF900)){
 length --;
 }
 }
 String returnStr = str.substring(0, index);
 returnStr += "..";
 return returnStr;
}

public static int getStrLength(String str){
 if(str==null || "".equals(str)){
 return 0;
 }
 char[] charArray = str.toCharArray();
 int length = 0;
 for(int i = 0; i < charArray.length; i++){
 if(((charArray[i]>=0x3400)&&(charArray[i]<0x9FFF))||(charArray[i]>=0xF900)){
 length += 2;
 }else{
 length ++;
 }
 }
 return length;
}

 /**
 * 将字符串格式化成 HTML 代码输出
 * 只转换特殊字符，适合于 HTML 中的表单区域
 *
 * @param str 要格式化的字符串
 * @return 格式化后的字符串
 */
 public static String toHtmlInput(String str) {
 if (str == null) return null;

String html = new String(str);
 //html = replaceStr(html, "<", "<");
 //html = replaceStr(html, ">", ">");
 html = replaceStr(html, "\r\n", " ");
 //html = replaceStr(html, "\n", " ");
 //html = replaceStr(html, "&", "&");
 html = replaceStr(html, "\t", " ");
 html = replaceStr(html, " ", " ");
 return html;
 }
 public static String toHtmlInputExceptSpace(String str) {
 if (str == null) return null;

String html = new String(str);
 html = replaceStr(html, "<", "<");
 html = replaceStr(html, ">", ">");
 html = replaceStr(html, "\r\n", "\n");
 html = replaceStr(html, "\n", " \n");
 html = replaceStr(html, "&", "&");
 html = replaceStr(html, "\t", " ");
 return html;
 }

public static String toHtmlOutput(String str) {
 if (str == null) return null;

 String html = new String(str);
 html = replaceStr(html, " \n", "\n");
 html = replaceStr(html, "&", "&");
 html = replaceStr(html, "<", "<");
 html = replaceStr(html, ">", ">");
 html = replaceStr(html, "\n", "\r\n");
 html = replaceStr(html, " ", "\t");
 html = replaceStr(html, "　", " ");


 return html;
 }

 public static String toHtmlOutput1(String str) {
 if (str == null) return null;

 String html = new String(str);
 html = replaceStr(html, " \n", "\n");
 html = replaceStr(html, "&", "&");
 html = replaceStr(html, "<", "<");
 html = replaceStr(html, ">", ">");
 //html = replaceStr(html, "\n", "\r\n");
 html = replaceStr(html, " ", "\t");
 html = replaceStr(html, "　", " ");


 return html;
 }

posted on 2007-09-20 16:29 智者无疆阅读(1393) 评论(12) 编辑收藏所属分类: about java

评论:

# re: JAVA STRING UTIL[未登录] lijun Posted @ 2007-09-24 16:29
hosts的位置：C:\WINDOWS\system32\drivers\etc\hosts 回复更多评论
# re: JAVA STRING UTIL[未登录] lijun Posted @ 2007-09-26 10:34
java全文检索
http://www-128.ibm.com/developerworks/cn/java/j-lo-lucene1/ 回复更多评论
# re: JAVA STRING UTIL[未登录] lijun Posted @ 2007-09-29 14:25
//截取字符串
public static String substring(String str, int byteNumber) {
int reInt = 0;
String reStr = "";
if (str == null) return "";
char[] tempChar = str.toCharArray();
for (int kk = 0; (kk < tempChar.length && byteNumber > reInt); kk++) {
String s1 = str.valueOf(tempChar[kk]);
byte[] b = s1.getBytes();
reInt += b.length;
reStr += tempChar[kk];
}

return reStr;
} 回复更多评论
# re: JAVA 快速排序[未登录] lijun Posted @ 2007-12-12 17:37
Comparator<HashMap> objComer=new Comparator<HashMap>(){
public int compare(HashMap a,HashMap b){
if(a.get("endTime")==null||b.get("endTime")==null)return 1;
else return ((Date)a.get("endTime")).compareTo((Date)b.get("endTime"));
}
};
Collections.sort(list,Collections.reverseOrder(objComer) ); 回复更多评论
# re: JAVA File UTIL 智者无疆 Posted @ 2008-01-10 14:38
package com.wonibo.projectx.util;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.InputStream;
import java.io.PrintWriter;
import java.util.Locale;
import java.util.ResourceBundle;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import java.util.Locale;
import java.util.ResourceBundle;

public class FileUtil {
/*
*��ļ��
*/
/*public static void depthFirst(File root){
System.out.println(root);
File subroots[]=root.listFiles(new FileFilter(){
public boolean accept(File pathname) {
return pathname.isDirectory();
}
});
if(subroots!=null){
for(int i=0;i<subroots.length;i++){
depthFirst(subroots[i]);
}
}
}
*/

/**
* �½�Ŀ¼
* @param folderPath String �� c:/fqf
* @return boolean
*/
public static boolean newFolder(String folderPath) {
try {
String filePath = folderPath;
filePath = filePath.toString();
File myFilePath = new File(filePath);
if (!myFilePath.exists()) {
myFilePath.mkdir();
}
return true;
}
catch (Exception ex) {
ex.printStackTrace();
return false;
}
}

/**
* �½��ļ�
* @param filePathAndName String �ļ�·�� c:/fqf.txt
* @param fileContent String �ļ��
* @return boolean
*/
public static boolean newFile(String filePathAndName, String fileContent) {

try {
String filePath = filePathAndName;
filePath = filePath.toString();
File myFilePath = new File(filePath);
if (!myFilePath.exists()) {
myFilePath.createNewFile();
}
FileWriter resultFile = new FileWriter(myFilePath);
PrintWriter myFile = new PrintWriter(resultFile);
String strContent = fileContent;
myFile.println(strContent);
myFile.close();
resultFile.close();
return true;
}
catch (Exception ex) {
ex.printStackTrace();
return false;
}
}

public static void makeDir(String path){
try{
String tmp[]=StringUtil.splitStr(path,'/');
path=tmp[0];
for(int i=1;i<tmp.length;i++){
path+="/"+tmp[i];
FileUtil.newFolder(path);
}
}catch(Exception ex){
ex.printStackTrace();
}

}

/* ��ļ��дһ��
* @return boolean
*/
public static void writeLine(String filePathAndName, String fileContent) {
try {
String filePath = filePathAndName;
filePath = filePath.toString();
File myFilePath = new File(filePath);
if (!myFilePath.exists()) {
myFilePath.createNewFile();
}
if(myFilePath.canWrite()){
FileWriter resultFile = new FileWriter(myFilePath,true);
BufferedWriter myFile = new BufferedWriter(resultFile);
String strContent = fileContent;
myFile.newLine();
myFile.write(strContent);
myFile.newLine();
myFile.write("----------------------------------------");
myFile.close();
resultFile.close();
}
}
catch (Exception ex) {
ex.printStackTrace();
}
}
public static void writeLineNew(String filePathAndName, String fileContent) {
try {
String filePath = filePathAndName;
filePath = filePath.toString();
File myFilePath = new File(filePath);
if (!myFilePath.exists()) {
myFilePath.createNewFile();
}
if(myFilePath.canWrite()){
FileWriter resultFile = new FileWriter(myFilePath,true);
BufferedWriter myFile = new BufferedWriter(resultFile);
String strContent = fileContent;
myFile.newLine();
myFile.write(strContent);
myFile.newLine();
myFile.write("----------------------------------------");
myFile.close();
resultFile.close();
}
}
catch (Exception ex) {
ex.printStackTrace();
}
}
/**
* ɾ��ļ�
* @param filePathAndName String �ļ�·�� c:/fqf.txt
* @param fileContent String
* @return boolean
*/
public static boolean delFile(String filePathAndName) {
try {
String filePath = filePathAndName;
filePath = filePath.toString();
java.io.File myDelFile = new java.io.File(filePath);
myDelFile.delete();
return true;
}
catch (Exception ex) {
ex.printStackTrace();
return false;
}
}

/**
* ɾ��ļ��
* @param filePathAndName String �ļ��·�� c:/fqf
* @param fileContent String
* @return boolean
*/
public static void delFolder(String folderPath) {
try {
delAllFile(folderPath); //ɾ��
String filePath = folderPath;
filePath = filePath.toString();
java.io.File myFilePath = new java.io.File(filePath);
myFilePath.delete(); //ɾ��ļ��

}
catch (Exception ex) {
ex.printStackTrace();
}

}

/**
* ɾ��ļ��ļ�
* @param path String �ļ��·�� c:/fqf
*/
public static void delAllFile(String path) {
File file = new File(path);
if (!file.exists()) {
return;
}
if (!file.isDirectory()) {
return;
}
String[] tempList = file.list();
File temp = null;
for (int i = 0; i < tempList.length; i++) {
if (path.endsWith(File.separator)) {
temp = new File(path + tempList[i]);
}
else {
temp = new File(path + File.separator + tempList[i]);
}
if (temp.isFile()) {
temp.delete();
}
if (temp.isDirectory()) {
delAllFile(path+"/"+ tempList[i]);//��ɾ��ļ��ļ�
delFolder(path+"/"+ tempList[i]);//��ɾ��ļ��
}
}
}

/**
* ��Ƶ��ļ�
* @param oldPath String ԭ�ļ�·�� 磺c:/fqf.txt
* @param newPath String ��ƺ�·�� 磺f:/fqf.txt
* @return boolean
*/
public static void copyFile(String oldPath, String newPath) {
try {

File oldfile = new File(oldPath);
if (oldfile.exists()) { //�ļ��ʱ
InputStream inStream = new FileInputStream(oldPath); //��ԭ�ļ�
FileOutputStream fs = new FileOutputStream(newPath);
byte[] buffer = new byte[1024];
while (inStream.read(buffer) != -1) {
fs.write(buffer);
}
fs.close();
inStream.close();
}
}
catch (Exception ex) {
//System.out.println("copy error");
ex.printStackTrace();
}

}

/**
* ��ļ��
* @param oldPath String ԭ�ļ�·�� 磺c:/fqf
* @param newPath String ��ƺ�·�� 磺f:/fqf/ff
* @return boolean
*/
public static boolean copyFolder(String oldPath, String newPath) {

try {
(new File(newPath)).mkdirs(); //��ļ��в�� b��ļ��
File a=new File(oldPath);
String[] file=a.list();
File temp=null;
for (int i = 0; i < file.length; i++) {
if(oldPath.endsWith(File.separator)){
temp=new File(oldPath+file[i]);
}
else{
temp=new File(oldPath+File.separator+file[i]);
}

if(temp.isFile()){
FileInputStream input = new FileInputStream(temp);
FileOutputStream output = new FileOutputStream(newPath + "/" +
(temp.getName()).toString());
byte[] b = new byte[1024 * 5];
int len;
while ( (len = input.read(b)) != -1) {
output.write(b, 0, len);
}
output.flush();
output.close();
input.close();
}
if(temp.isDirectory()){//��ļ��
copyFolder(oldPath+"/"+file[i],newPath+"/"+file[i]);
}
}
return true;
}
catch (Exception ex) {
ex.printStackTrace();
return false;
}
}

/**
* �ƶ��ļ��ָ��Ŀ¼
* @param oldPath String �磺c:/fqf.txt
* @param newPath String �磺d:/fqf.txt
*/
public static void moveFile(String oldPath, String newPath) {
copyFile(oldPath, newPath);
delFile(oldPath);

}

/**
* �ƶ��ļ��ָ��Ŀ¼
* @param oldPath String �磺c:/fqf.txt
* @param newPath String �磺d:/fqf.txt
*/
public static void moveFolder(String oldPath, String newPath) {
copyFolder(oldPath, newPath);
delFolder(oldPath);
}

/**
* ��ȡ�ļ��
*/
public static String readFile(String filePathAndName){
try {
String filePath = filePathAndName;
filePath = filePath.toString();
String content=null;
String tmp=null;
File myFilePath = new File(filePath);
if (myFilePath.exists()) {
FileReader fr=new FileReader(myFilePath);
BufferedReader br=new BufferedReader(fr);
content=new String();
tmp=new String();
while((tmp=br.readLine())!=null){
content=content+tmp;
}
br.close();
fr.close();
}
return content;
}
catch (Exception ex) {
ex.printStackTrace();
return null;
}
}

public static boolean ifFileExists(String filePathAndName){
try{
File myFilePath = new File(filePathAndName);
if (myFilePath.exists()) {
return true;
}else{
return false;
}
}catch(Exception ex){
ex.printStackTrace();
return false;
}
}

public static String[] getFileList(String path){
File dir=new File(path);
String[] files=dir.list();
return files;
}

public static String getRandFileName(){
return ((Long)System.currentTimeMillis()).toString();
}
public static long getFileSize(String pathandname){
File file=new File(pathandname);
long temp=file.length();
return temp;
}

public static ResourceBundle getResourceBundle(String bundleName,String language){
String country;
if(language.equals("zh")) country="CN";
else if(language.equals("en")) country="US";
else if(language.equals("ja")) country="JP";
else country="";
Locale currentLocale;
ResourceBundle messages;
currentLocale = new Locale(language, country);
messages = ResourceBundle.getBundle(bundleName,currentLocale);
return messages;
}

public static void main(String[] args) {
ResourceBundle message=getResourceBundle("resources.test","ja");
System.out.println(message.getString("index.title"));
message=getResourceBundle("resources.test","en");
System.out.println(message.getString("index.title"));
message=getResourceBundle("resources.test","zh");
System.out.println(message.getString("index.title"));
}
}
回复更多评论
# re: 过滤jsp页面中引用的所有js[未登录] lijun Posted @ 2008-01-22 10:36
<servlet-mapping>
<servlet-name>jsp</servlet-name>
<url-pattern>*.js</url-pattern>
</servlet-mapping> 回复更多评论
# re: 过滤jsp页面中引用的所有js[未登录] lijun Posted @ 2008-01-22 10:36
以上在web.xml里配置回复更多评论
# re: web.xml里配置session的失效期[未登录] lijun Posted @ 2008-01-22 10:37
<session-config>
<session-timeout>60</session-timeout>
</session-config> 回复更多评论
# re: web.xml里配置filter[未登录] lijun Posted @ 2008-01-22 10:39
<filter>
<filter-name>logincheckfilter</filter-name>
<filter-class>com.wonibo.projectx.web.servlet.LoginFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>logincheckfilter</filter-name>
<url-pattern>*.jsp</url-pattern>
</filter-mapping>
<filter-mapping>
<filter-name>logincheckfilter</filter-name>
<url-pattern>/admin/*</url-pattern>
</filter-mapping>
<filter-mapping>
<filter-name>logincheckfilter</filter-name>
<url-pattern>/app/*</url-pattern>
</filter-mapping>
<filter-mapping>
<filter-name>logincheckfilter</filter-name>
<url-pattern>/jsp_cn/*</url-pattern>
</filter-mapping>
public class LoginFilter extends HttpServlet implements Filter {
/**
*
*/
private static final long serialVersionUID = 1L;
private FilterConfig filterConfig;
//Handle the passed-in FilterConfig
public void init(FilterConfig filterConfig) throws ServletException {
this.filterConfig = filterConfig;
}
public void destroy() {

}

public void doFilter(ServletRequest request, ServletResponse response,
FilterChain filterChain) {
try {
//��Ӧ��ת��
HttpServletRequest httpRequest = (HttpServletRequest) request;
HttpServletResponse httpResponse = (HttpServletResponse) response;
//HttpSessionContext SessCon= httpRequest.getSession().getSessionContext();
//HttpSession Sess = SessCon.getSession("");
UserInfo_Home userInfoHome=(UserInfo_Home)httpRequest.getSession().getAttribute("userInfoHome");
if(userInfoHome==null){
ApplicationContext applicationContext=WebApplicationContextUtils.getRequiredWebApplicationContext(filterConfig.getServletContext());
UserService userService =(UserService)applicationContext.getBean("userServiceManager");
//userService.checkCookie(httpRequest);
userInfoHome=userService.getFlexUserLogin(httpRequest);
//�޸��û��¼ʱ��
if(userInfoHome!=null){
WbUser wbUser=userService.getUserInfoById(userInfoHome.getUser_id());
Date lastLoginDate=new Date(System.currentTimeMillis());
wbUser.setLastLoginTimeMedia(wbUser.getLastLoginDate());
wbUser.setLastLoginDate(lastLoginDate);
userService.updateWbUser(wbUser);
}
//**************end
httpRequest.getSession().setAttribute("userInfoHome",userInfoHome);
}

//*********************************** 回复更多评论
# spring 的quartz定时调度[未登录] lijun Posted @ 2008-02-13 09:31


<bean id="quartzJob" class="cn.com.swjay.guidelineconfig.service.model.impl.JobServiceImpl"></bean>

<bean id="jobtask" class="org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean">

<property name="targetObject">
<ref bean="quartzJob"/>
</property>

<property name="targetMethod">
<value>work</value>
</property>
</bean>

<bean id="doTime" class="org.springframework.scheduling.quartz.CronTriggerBean">
<property name="jobDetail">
<ref bean="jobtask"/>
</property>

<property name="cronExpression">
<value>10,15,20,25,30,35,40,45,50,55 * * * * ?</value>
</property>
</bean>


 回复更多评论
# re: JAVA 验证码及使用[未登录] lijun Posted @ 2008-03-20 16:34
image.jsp
<%@ page contentType="image/jpeg" import="java.awt.*,java.awt.image.*,java.util.*,javax.imageio.*" %><%!
Color getRandColor(int fc,int bc){
Random random = new Random();
if(fc>255) fc=255;
if(bc>255) bc=255;
int r=fc+random.nextInt(bc-fc);
int g=fc+random.nextInt(bc-fc);
int b=fc+random.nextInt(bc-fc);
return new Color(r,g,b);
}
%><%
response.setHeader("Pragma","No-cache");
response.setHeader("Cache-Control","no-cache");
response.setDateHeader("Expires", 0);

int width=60, height=20;
BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);

Graphics g = image.getGraphics();

Random random = new Random();

g.setColor(getRandColor(200,250));
g.fillRect(0, 0, width, height);

g.setFont(new Font("Times New Roman",Font.PLAIN,18));

g.setColor(getRandColor(160,200));
for (int i=0;i<155;i++)
{
int x = random.nextInt(width);
int y = random.nextInt(height);
int xl = random.nextInt(12);
int yl = random.nextInt(12);
g.drawLine(x,y,x+xl,y+yl);
}

String sRand="";
for (int i=0;i<4;i++){
String rand=String.valueOf(random.nextInt(10));
sRand+=rand;
g.setColor(new Color(20+random.nextInt(110),20+random.nextInt(110),20+random.nextInt(110)));
g.drawString(rand,13*i+6,16);
}

//session.setAttribute("commentrand",sRand);
//String str = new String(request.getParameter("test").getBytes("ISO8859_1"));
String str = new String(request.getParameter("sessname").getBytes("ISO8859_1"));
session.setAttribute(str,sRand);
//System.out.println("sessname:"+str+"="+sRand);
g.dispose();

ImageIO.write(image, "JPEG", response.getOutputStream());
%>
2.使用的页面

function show(o,va){

//重载验证码
var path='<%=contextPath%>';
//alert(path);
var timenow=new Date().getTime();
o.src=path+"/img/image.jsp?sessname="+va+"&d="+timenow;
/*
//超时执行;
setTimeout(function(){o.src="random.jsp?sessname="+va+"&d="+timenow;},20);
*/

}

<tr>
<td align="left" height="30"><ww:text name="spacehome.verycode">验证码：</ww:text>：</td>
<td align="left"><input type="text" name="randCode" maxlength=4 class="guestbookinputma input" /> <img border=0 id="random" src="<%=contextPath%>/img/image.jsp?sessname=${sessionName}"/> <a href="javascript:show(document.getElementById('random'),'${sessionName}')"><ww:text name="spacehome.verynosee">看不清楚？换一个</ww:text></a></td>
</tr>
回复更多评论
# 判断是不是汉字[未登录] lijun Posted @ 2008-03-31 11:03
public static void main(String[] args) {
String str = "我lu是ya一个ng猫";
char[] arr = str.toCharArray();
for (int i = 0; i < arr.length; i++) {
if (String.valueOf(arr[i]).matches("[\\u4e00-\\u9fa5]")) {
System.out.println("字符 \\"" + arr[i] + " \\"是" + "汉字");
} else {

System.out.println("字符 \\"" + arr[i] + " \\"是" + "字母");
}
}
}
这样就OK了。回复更多评论

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