package com.thinkgem.jeesite.common.utils; import java.io.File;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.util.List;
import java.util.Locale;
import java.util.regex.Matcher;
import java.util.regex.Pattern; import javax.servlet.http.HttpServletRequest; import org.apache.commons.lang3.StringEscapeUtils;
import org.springframework.core.io.DefaultResourceLoader;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;
import org.springframework.web.servlet.LocaleResolver; import com.google.common.collect.Lists; /**
* 字符串工具类, 继承org.apache.commons.lang3.StringUtils类
*/
public class StringUtils extends org.apache.commons.lang3.StringUtils { private static final char SEPARATOR = '_';
private static final String CHARSET_NAME = "UTF-8"; /**
* 转换为字节数组
* @param str
* @return
*/
public static byte[] getBytes(String str){
if (str != null){
try {
return str.getBytes(CHARSET_NAME);
} catch (UnsupportedEncodingException e) {
return null;
}
}else{
return null;
}
} /**
* 转换为字节数组
* @param str
* @return
*/
public static String toString(byte[] bytes){
try {
return new String(bytes, CHARSET_NAME);
} catch (UnsupportedEncodingException e) {
return EMPTY;
}
} /**
* 是否包含字符串
* @param str 验证字符串
* @param strs 字符串组
* @return 包含返回true
*/
public static boolean inString(String str, String... strs){
if (str != null){
for (String s : strs){
if (str.equals(trim(s))){
return true;
}
}
}
return false;
} /**
* 替换掉HTML标签方法
*/
public static String replaceHtml(String html) {
if (isBlank(html)){
return "";
}
String regEx = "<.+?>";
Pattern p = Pattern.compile(regEx);
Matcher m = p.matcher(html);
String s = m.replaceAll("");
return s;
} /**
* 替换为手机识别的HTML，去掉样式及属性，保留回车。
* @param html
* @return
*/
public static String replaceMobileHtml(String html){
if (html == null){
return "";
}
return html.replaceAll("<([a-z]+?)\\s+?.*?>", "<$1>");
} /**
* 替换为手机识别的HTML，去掉样式及属性，保留回车。
* @param txt
* @return
*/
public static String toHtml(String txt){
if (txt == null){
return "";
}
return replace(replace(Encodes.escapeHtml(txt), "\n", "<br/>"), "\t", " ");
} /**
* 缩略字符串（不区分中英文字符）
* @param str 目标字符串
* @param length 截取长度
* @return
*/
public static String abbr(String str, int length) {
if (str == null) {
return "";
}
try {
StringBuilder sb = new StringBuilder();
int currentLength = 0;
for (char c : replaceHtml(StringEscapeUtils.unescapeHtml4(str)).toCharArray()) {
currentLength += String.valueOf(c).getBytes("GBK").length;
if (currentLength <= length - 3) {
sb.append(c);
} else {
sb.append("...");
break;
}
}
return sb.toString();
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
return "";
} public static String abbr2(String param, int length) {
if (param == null) {
return "";
}
StringBuffer result = new StringBuffer();
int n = 0;
char temp;
boolean isCode = false; // 是不是HTML代码
boolean isHTML = false; // 是不是HTML特殊字符,如
for (int i = 0; i < param.length(); i++) {
temp = param.charAt(i);
if (temp == '<') {
isCode = true;
} else if (temp == '&') {
isHTML = true;
} else if (temp == '>' && isCode) {
n = n - 1;
isCode = false;
} else if (temp == ';' && isHTML) {
isHTML = false;
}
try {
if (!isCode && !isHTML) {
n += String.valueOf(temp).getBytes("GBK").length;
}
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
} if (n <= length - 3) {
result.append(temp);
} else {
result.append("...");
break;
}
}
// 取出截取字符串中的HTML标记
String temp_result = result.toString().replaceAll("(>)[^<>]*(<?)",
"$1$2");
// 去掉不需要结素标记的HTML标记
temp_result = temp_result
.replaceAll(
"</?(AREA|BASE|BASEFONT|BODY|BR|COL|COLGROUP|DD|DT|FRAME|HEAD|HR|HTML|IMG|INPUT|ISINDEX|LI|LINK|META|OPTION|P|PARAM|TBODY|TD|TFOOT|TH|THEAD|TR|area|base|basefont|body|br|col|colgroup|dd|dt|frame|head|hr|html|img|input|isindex|li|link|meta|option|p|param|tbody|td|tfoot|th|thead|tr)[^<>]*/?>",
"");
// 去掉成对的HTML标记
temp_result = temp_result.replaceAll("<([a-zA-Z]+)[^<>]*>(.*?)</\\1>",
"$2");
// 用正则表达式取出标记
Pattern p = Pattern.compile("<([a-zA-Z]+)[^<>]*>");
Matcher m = p.matcher(temp_result);
List<String> endHTML = Lists.newArrayList();
while (m.find()) {
endHTML.add(m.group(1));
}
// 补全不成对的HTML标记
for (int i = endHTML.size() - 1; i >= 0; i--) {
result.append("</");
result.append(endHTML.get(i));
result.append(">");
}
return result.toString();
} /**
* 转换为Double类型
*/
public static Double toDouble(Object val){
if (val == null){
return 0D;
}
try {
return Double.valueOf(trim(val.toString()));
} catch (Exception e) {
return 0D;
}
} /**
* 转换为Float类型
*/
public static Float toFloat(Object val){
return toDouble(val).floatValue();
} /**
* 转换为Long类型
*/
public static Long toLong(Object val){
return toDouble(val).longValue();
} /**
* 转换为Integer类型
*/
public static Integer toInteger(Object val){
return toLong(val).intValue();
} /**
* 获得i18n字符串
*/
public static String getMessage(String code, Object[] args) {
LocaleResolver localLocaleResolver = (LocaleResolver) SpringContextHolder.getBean(LocaleResolver.class);
HttpServletRequest request = ((ServletRequestAttributes)RequestContextHolder.getRequestAttributes()).getRequest();
Locale localLocale = localLocaleResolver.resolveLocale(request);
return SpringContextHolder.getApplicationContext().getMessage(code, args, localLocale);
} /**
* 获得用户远程地址
*/
public static String getRemoteAddr(HttpServletRequest request){
String remoteAddr = request.getHeader("X-Real-IP");
if (isNotBlank(remoteAddr)) {
remoteAddr = request.getHeader("X-Forwarded-For");
}else if (isNotBlank(remoteAddr)) {
remoteAddr = request.getHeader("Proxy-Client-IP");
}else if (isNotBlank(remoteAddr)) {
remoteAddr = request.getHeader("WL-Proxy-Client-IP");
}
return remoteAddr != null ? remoteAddr : request.getRemoteAddr();
} /**
* 驼峰命名法工具
* @return
* toCamelCase("hello_world") == "helloWorld"
* toCapitalizeCamelCase("hello_world") == "HelloWorld"
* toUnderScoreCase("helloWorld") = "hello_world"
*/
public static String toCamelCase(String s) {
if (s == null) {
return null;
} s = s.toLowerCase(); StringBuilder sb = new StringBuilder(s.length());
boolean upperCase = false;
for (int i = 0; i < s.length(); i++) {
char c = s.charAt(i); if (c == SEPARATOR) {
upperCase = true;
} else if (upperCase) {
sb.append(Character.toUpperCase(c));
upperCase = false;
} else {
sb.append(c);
}
} return sb.toString();
} /**
* 驼峰命名法工具
* @return
* toCamelCase("hello_world") == "helloWorld"
* toCapitalizeCamelCase("hello_world") == "HelloWorld"
* toUnderScoreCase("helloWorld") = "hello_world"
*/
public static String toCapitalizeCamelCase(String s) {
if (s == null) {
return null;
}
s = toCamelCase(s);
return s.substring(0, 1).toUpperCase() + s.substring(1);
} /**
* 驼峰命名法工具
* @return
* toCamelCase("hello_world") == "helloWorld"
* toCapitalizeCamelCase("hello_world") == "HelloWorld"
* toUnderScoreCase("helloWorld") = "hello_world"
*/
public static String toUnderScoreCase(String s) {
if (s == null) {
return null;
} StringBuilder sb = new StringBuilder();
boolean upperCase = false;
for (int i = 0; i < s.length(); i++) {
char c = s.charAt(i); boolean nextUpperCase = true; if (i < (s.length() - 1)) {
nextUpperCase = Character.isUpperCase(s.charAt(i + 1));
} if ((i > 0) && Character.isUpperCase(c)) {
if (!upperCase || !nextUpperCase) {
sb.append(SEPARATOR);
}
upperCase = true;
} else {
upperCase = false;
} sb.append(Character.toLowerCase(c));
} return sb.toString();
} /**
* 获取工程路径
* @return
*/
public static String getProjectPath(){
String projectPath = "";
try {
File file = new DefaultResourceLoader().getResource("").getFile();
if (file != null){
while(true){
File f = new File(file.getPath() + File.separator + "src" + File.separator + "main");
if (f == null || f.exists()){
break;
}
if (file.getParentFile() != null){
file = file.getParentFile();
}else{
break;
}
}
projectPath = file.toString();
}
} catch (IOException e) {
e.printStackTrace();
}
return projectPath;
} /**
* 如果不为空，则设置值
* @param target
* @param source
*/
public static void setValueIfNotBlank(String target, String source) {
if (isNotBlank(source)){
target = source;
}
} /**
* 转换为JS获取对象值，生成三目运算返回结果
* @param objectString 对象串
* 例如：row.user.id
* 返回：!row?'':!row.user?'':!row.user.id?'':row.user.id
*/
public static String jsGetVal(String objectString){
StringBuilder result = new StringBuilder();
StringBuilder val = new StringBuilder();
String[] vals = split(objectString, ".");
for (int i=0; i<vals.length; i++){
val.append("." + vals[i]);
result.append("!"+(val.substring(1))+"?'':");
}
result.append(val.substring(1));
return result.toString();
} }