java常用工具类 Reflect反射工具类、String字符串工具类

本文实例为大家分享了java常用工具类的具体代码，供大家参考，具体内容如下

Reflect反射工具类

package com.jarvis.base.util;


public class ReflectHelper {

 
 public static Class classForName(String name) throws ClassNotFoundException {
 try {
 return Thread.currentThread().getContextClassLoader().loadClass(name);
 }

 catch (ClassNotFoundException e) {
 e.printStackTrace();
 System.err.println("类[" + name + "]加载出错");
 } catch (SecurityException e) {
 e.printStackTrace();
 System.err.println("类[" + name + "]加载出错");
 }
 return Class.forName(name);
 }

 
 public static Object objectForName(String name) {
 try {
 return Class.forName(name).newInstance();
 } catch (Exception ex) {
 ex.printStackTrace();
 System.err.println("类[" + name + "]获取对象实例出错");
 }
 return null;
 }
}

String字符串工具类

package com.jarvis.base.util;

import java.io.UnsupportedEncodingException;
import java.text.DecimalFormat;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.StringTokenizer;
import java.util.UUID;
import java.util.regex.Matcher;
import java.util.regex.Pattern;


public final class StringHelper {

 
 private StringHelper() {
 }

 
 public static final String EMPTY_STRING = "";

 
 public static final char DOT = '.';

 
 public static final char UNDERSCORE = '_';

 
 public static final String COMMA_SPACE = ", ";

 
 public static final String COMMA = ",";

 
 public static final String OPEN_PAREN = "(";

 
 public static final String CLOSE_PAREN = ")";

 
 public static final char SINGLE_QUOTE = ''';

 
 public static final String CRLF = "rn";

 
 public static final int FIANL_TWELVE = 12;

 
 public static final int HEX_80 = 0x80;

 
 public static final int HEX_FF = 0xff;

 
 public static String join(String seperator, String[] strings) {
 int length = strings.length;
 if (length == 0) {
 return EMPTY_STRING;
 }
 StringBuffer buf = new StringBuffer(length * strings[0].length()).append(strings[0]);
 for (int i = 1; i < length; i++) {
 buf.append(seperator).append(strings[i]);
 }
 return buf.toString();
 }

 
 public static String join(String seperator, Iterator objects) {
 StringBuffer buf = new StringBuffer();
 if (objects.hasNext()) {
 buf.append(objects.next());
 }
 while (objects.hasNext()) {
 buf.append(seperator).append(objects.next());
 }
 return buf.toString();
 }

 
 public static String[] add(String[] x, String seperator, String[] y) {
 String[] result = new String[x.length];
 for (int i = 0; i < x.length; i++) {
 result[i] = x[i] + seperator + y[i];
 }
 return result;
 }

 
 public static String repeat(String string, int times) {
 StringBuffer buf = new StringBuffer(string.length() * times);
 for (int i = 0; i < times; i++) {
 buf.append(string);
 }
 return buf.toString();
 }

 
 public static String replace(String source, String old, String replace) {
 StringBuffer output = new StringBuffer();

 int sourceLen = source.length();
 int oldLen = old.length();

 int posStart = 0;
 int pos;

 // 通过截取字符串的方式，替换字符串
 while ((pos = source.indexOf(old, posStart)) >= 0) {
 output.append(source.substring(posStart, pos));

 output.append(replace);
 posStart = pos + oldLen;
 }

 // 如果还有没有处理的字符串，则都添加到新字符串后面
 if (posStart < sourceLen) {
 output.append(source.substring(posStart));
 }

 return output.toString();
 }

 
 public static String replace(String template, String placeholder, String replacement, boolean wholeWords) {
 int loc = template.indexOf(placeholder);
 if (loc < 0) {
 return template;
 } else {
 final boolean actuallyReplace = wholeWords || loc + placeholder.length() == template.length()
 || !Character.isJavaIdentifierPart(template.charAt(loc + placeholder.length()));
 String actualReplacement = actuallyReplace ? replacement : placeholder;
 return new StringBuffer(template.substring(0, loc)).append(actualReplacement).append(
 replace(template.substring(loc + placeholder.length()), placeholder, replacement, wholeWords))
 .toString();
 }
 }

 
 public static String replaceonce(String template, String placeholder, String replacement) {
 int loc = template.indexOf(placeholder);
 if (loc < 0) {
 return template;
 } else {
 return new StringBuffer(template.substring(0, loc)).append(replacement)
 .append(template.substring(loc + placeholder.length())).toString();
 }
 }

 
 public static String[] split(String list, String seperators) {
 return split(list, seperators, false);
 }

 
 public static String[] split(String list, String seperators, boolean include) {
 StringTokenizer tokens = new StringTokenizer(list, seperators, include);
 String[] result = new String[tokens.countTokens()];
 int i = 0;
 while (tokens.hasMoreTokens()) {
 result[i++] = tokens.nextToken();
 }
 return result;
 }

 
 public static String unqualify(String qualifiedName) {
 return unqualify(qualifiedName, ".");
 }

 
 public static String unqualify(String qualifiedName, String seperator) {
 return qualifiedName.substring(qualifiedName.lastIndexOf(seperator) + 1);
 }

 
 public static String qualifier(String qualifiedName) {
 int loc = qualifiedName.lastIndexOf(".");
 if (loc < 0) {
 return EMPTY_STRING;
 } else {
 return qualifiedName.substring(0, loc);
 }
 }

 
 public static String[] suffix(String[] columns, String suffix) {
 if (suffix == null) {
 return columns;
 }
 String[] qualified = new String[columns.length];
 for (int i = 0; i < columns.length; i++) {
 qualified[i] = suffix(columns[i], suffix);
 }
 return qualified;
 }

 
 public static String suffix(String name, String suffix) {
 return (suffix == null) ? name : name + suffix;
 }

 
 public static String[] prefix(String[] columns, String prefix) {
 if (prefix == null) {
 return columns;
 }
 String[] qualified = new String[columns.length];
 for (int i = 0; i < columns.length; i++) {
 qualified[i] = prefix + columns[i];
 }
 return qualified;
 }

 
 public static String prefix(String name, String prefix) {
 return (prefix == null) ? name : prefix + name;
 }

 
 public static boolean booleanValue(String tfString) {
 String trimmed = tfString.trim().toLowerCase();
 return trimmed.equals("true") || trimmed.equals("t");
 }

 
 public static String toString(Object[] array) {
 int len = array.length;
 if (len == 0) {
 return StringHelper.EMPTY_STRING;
 }
 StringBuffer buf = new StringBuffer(len * FIANL_TWELVE);
 for (int i = 0; i < len - 1; i++) {
 buf.append(array[i]).append(StringHelper.COMMA_SPACE);
 }
 return buf.append(array[len - 1]).toString();
 }

 
 public static String[] multiply(String string, Iterator placeholders, Iterator replacements) {
 String[] result = new String[] { string };
 while (placeholders.hasNext()) {
 result = multiply(result, (String) placeholders.next(), (String[]) replacements.next());
 }
 return result;
 }

 
 private static String[] multiply(String[] strings, String placeholder, String[] replacements) {
 String[] results = new String[replacements.length * strings.length];
 int n = 0;
 for (int i = 0; i < replacements.length; i++) {
 for (int j = 0; j < strings.length; j++) {
 results[n++] = replaceonce(strings[j], placeholder, replacements[i]);
 }
 }
 return results;
 }

 
 public static int count(String string, char character) {
 int n = 0;
 for (int i = 0; i < string.length(); i++) {
 if (string.charAt(i) == character) {
 n++;
 }
 }
 return n;
 }

 
 public static int countUnquoted(String string, char character) {
 if (SINGLE_QUOTE == character) {
 throw new IllegalArgumentException("Unquoted count of quotes is invalid");
 }

 int count = 0;
 int stringLength = string == null ? 0 : string.length();
 boolean inQuote = false;
 for (int indx = 0; indx < stringLength; indx++) {
 if (inQuote) {
 if (SINGLE_QUOTE == string.charAt(indx)) {
 inQuote = false;
 }
 } else if (SINGLE_QUOTE == string.charAt(indx)) {
 inQuote = true;
 } else if (string.charAt(indx) == character) {
 count++;
 }
 }
 return count;
 }

 
 public static boolean isBlank(String str) {
 boolean b = true;// 20140507 modify by liwei 修复对" "为false的bug
 if (str == null) {
 b = true;
 } else {
 int strLen = str.length();
 if (strLen == 0) {
 b = true;
 }

 for (int i = 0; i < strLen; i++) {
 if (!Character.isWhitespace(str.charAt(i))) {
 b = false;
 break;
 }
 }
 }

 return b;
 }

 
 public static boolean isNotBlank(String str) {
 int strLen = 0;
 if (str != null)
 strLen = str.length();
 if (str == null || strLen == 0) {
 return false;
 }
 for (int i = 0; i < strLen; i++) {
 if (!Character.isWhitespace(str.charAt(i))) {
 return true;
 }
 }

 return false;
 }

 
 public static boolean isNotEmpty(String string) {
 return string != null && string.length() > 0;
 }

 

 public static boolean isEmpty(String str) {
 if (str == null || str.trim().length() == 0) {
 return true;
 }
 return false;
 }

 
 public static String qualify(String name, String prefix) {
 if (name.startsWith("'")) {
 return name;
 }

 return new StringBuffer(prefix.length() + name.length() + 1).append(prefix).append(DOT).append(name).toString();
 }

 
 public static String[] qualify(String[] names, String prefix) {
 if (prefix == null) {
 return names;
 }
 int len = names.length;
 String[] qualified = new String[len];
 for (int i = 0; i < len; i++) {
 qualified[i] = qualify(prefix, names[i]);
 }
 return qualified;
 }

 
 public static int firstIndexOfChar(String sqlString, String string, int startindex) {
 int matchAt = -1;
 for (int i = 0; i < string.length(); i++) {
 int curMatch = sqlString.indexOf(string.charAt(i), startindex);
 if (curMatch >= 0) {
 if (matchAt == -1) {
 matchAt = curMatch;
 } else {
 matchAt = Math.min(matchAt, curMatch);
 }
 }
 }
 return matchAt;
 }

 
 public static String truncate(String string, int length, boolean appendSuspensionPoints) {
 if (isEmpty(string) || length < 0) {
 return string;
 }

 if (length == 0) {
 return "";
 }

 int strLength = string.length(); // 字符串字符个数
 int byteLength = byteLength(string); // 字符串字节长度
 length *= 2; // 换成字节长度

 // 判断是否需要加省略号
 boolean needSus = false;
 if (appendSuspensionPoints && byteLength >= length) {
 needSus = true;

 // 如果需要加省略号，则要少取2个字节用来加省略号
 length -= 2;
 }

 StringBuffer result = new StringBuffer();
 int count = 0;
 for (int i = 0; i < strLength; i++) {
 if (count >= length) { // 取完了
 break;
 }

 char c = string.charAt(i);

 if (isLetter(c)) { // Ascill字符
 result.append(c);
 count += 1;
 } else { // 非Ascill字符
 if (count == length - 1) { // 如果只要取1个字节了，而后面1个是汉字，就放空格
 result.append(" ");
 count += 1;
 } else {
 result.append(c);
 count += 2;
 }
 }
 }

 if (needSus) {
 result.append("...");
 }

 return result.toString();
 }

 
 public static boolean isLetter(char c) {
 int k = HEX_80;
 return c / k == 0 ? true : false;
 }

 
 public static int byteLength(String s) {
 char[] c = s.toCharArray();
 int len = 0;
 for (int i = 0; i < c.length; i++) {
 if (isLetter(c[i])) {
 len++;
 } else {
 len += 2;
 }
 }
 return len;
 }

 
 public static String truncate(String string, int length) {
 if (isEmpty(string)) {
 return string;
 }

 if (string.length() <= length) {
 return string;
 } else {
 return string.substring(0, length);
 }
 }

 
 public static String leftTrim(String value) {
 String result = value;
 if (result == null) {
 return result;
 }
 char ch[] = result.toCharArray();
 int index = -1;
 for (int i = 0; i < ch.length; i++) {
 if (!Character.isWhitespace(ch[i])) {
 break;
 }
 index = i;
 }

 if (index != -1) {
 result = result.substring(index + 1);
 }
 return result;
 }

 
 public static String rightTrim(String value) {
 String result = value;
 if (result == null) {
 return result;
 }
 char ch[] = result.toCharArray();
 int endIndex = -1;
 for (int i = ch.length - 1; i > -1; i--) {
 if (!Character.isWhitespace(ch[i])) {
 break;
 }
 endIndex = i;
 }

 if (endIndex != -1) {
 result = result.substring(0, endIndex);
 }
 return result;
 }

 
 public static String n2s(String source) {
 return source != null ? source : "";
 }

 
 public static String n2s(String source, String defaultStr) {
 return source != null ? source : defaultStr;
 }

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

 String html = new String(str);

 html = replace(html, """, "\"");
 html = replace(html, "rn", "n");
 html = replace(html, "n", "\n");
 html = replace(html, "t", " ");
 html = replace(html, "'", "\'");

 html = replace(html, " ", "  ");

 html = replace(html, "", "<\/script>");
 html = replace(html, "", "<\/script>");

 return html;
 }

 
 public static String trim(String s) {
 return s == null ? s : s.trim();
 }

 
 public static int strTrim(String source, int defaultValue) {
 if (isEmpty(source)) {
 return defaultValue;
 }
 try {
 source = source.trim();
 int value = (new Integer(source)).intValue();
 return value;
 } catch (Exception ex) {
 ex.printStackTrace();
 System.err.println("数字转换出错，请检查数据来源。返回默认值");
 return defaultValue;
 }
 }

 
 public static String strTrim(String source, String defaultValue) {
 if (StringHelper.isEmpty(source)) {
 return defaultValue;
 }
 try {
 source = source.trim();
 return source;
 } catch (Exception ex) {
 ex.printStackTrace();
 System.err.println("字符串去空格失败，返回默认值");
 return defaultValue;
 }
 }

 
 public static String encodeURL(String source) {
 if (source == null) {
 return null;
 }
 String html = new String(source);
 html = replace(html, "<", "<");
 html = replace(html, ">", ">");
 html = replace(html, """, """);
 html = replace(html, " ", " ");
 html = replace(html, "'", "´");
 html = replace(html, "\", "\");
 html = replace(html, "&", "&");
 html = replace(html, "r", "");
 html = replace(html, "n", "");
 html = replace(html, "(", "(");
 html = replace(html, ")", ")");
 html = replace(html, "[", "[");
 html = replace(html, "]", "]");
 html = replace(html, ";", ";");
 html = replace(html, "/", "/");

 return html;
 }

 
 public static String encodeHtml(String source) {
 if (source == null) {
 return null;
 }

 String html = new String(source);

 html = replace(html, "&", "&");
 html = replace(html, "<", "<");
 html = replace(html, ">", ">");
 html = replace(html, """, """);
 html = replace(html, " ", " ");
 html = replace(html, "'", "´");
 return html;
 }

 
 public static String decodeHtml(String source) {
 if (source == null) {
 return null;
 }

 String html = new String(source);

 html = replace(html, "&", "&");
 html = replace(html, "<", "<");
 html = replace(html, ">", ">");
 html = replace(html, """, """);
 html = replace(html, " ", " ");

 html = replace(html, "rn", "n");
 html = replace(html, "n", "
n");
 html = replace(html, "t", " ");
 html = replace(html, " ", "  ");

 return html;
 }

 
 public static boolean isBoolean(String source) {
 if (source.equalsIgnoreCase("true") || source.equalsIgnoreCase("false")) {
 return true;
 }
 return false;
 }

 
 public static String lastCharTrim(String str, String strMove) {
 if (isEmpty(str)) {
 return "";
 }

 String newStr = "";
 if (str.lastIndexOf(strMove) != -1 && str.lastIndexOf(strMove) == str.length() - 1) {
 newStr = str.substring(0, str.lastIndexOf(strMove));
 }
 return newStr;
 }

 
 public static String clearHtml(String html) {
 if (isEmpty(html)) {
 return "";
 }

 String patternStr = "(<[^>]*>)";
 Pattern pattern = Pattern.compile(patternStr, Pattern.CASE_INSENSITIVE);
 Matcher matcher = null;
 StringBuffer bf = new StringBuffer();
 try {
 matcher = pattern.matcher(html);
 boolean first = true;
 int start = 0;
 int end = 0;
 while (matcher.find()) {
 start = matcher.start(1);
 if (first) {
 bf.append(html.substring(0, start));
 first = false;
 } else {
 bf.append(html.substring(end, start));
 }

 end = matcher.end(1);
 }
 if (end < html.length()) {
 bf.append(html.substring(end));
 }
 html = bf.toString();
 return html;
 } catch (Exception ex) {
 ex.printStackTrace();
 System.err.println("清除html标签失败");
 } finally {
 pattern = null;
 matcher = null;
 }
 return html;
 }

 
 public static String textFmtToHtmlFmt(String content) {
 content = StringHelper.replace(content, " ", " ");
 content = StringHelper.replace(content, "rn", "
");
 content = StringHelper.replace(content, "n", "
");

 return content;
 }

 
 public static String toLowerStr(String strIn) {
 String strOut = new String(); // 输出的字串
 int len = strIn.length(); // 参数的长度
 int i = 0; // 计数器
 char ch; // 存放参数的字符

 while (i < len) {
 ch = strIn.charAt(i);

 if (ch >= 'A' && ch <= 'Z') {
 ch = (char) (ch - 'A' + 'a');
 }

 strOut += ch;
 i++;
 }
 return strOut;
 }

 
 public static String toUpperStr(String strIn) {
 String strOut = new String(); // 输出的字串
 int len = strIn.length(); // 参数的长度
 int i = 0; // 计数器
 char ch; // 存放参数的字符

 while (i < len) {
 ch = strIn.charAt(i);

 if (ch >= 'a' && ch <= 'z') {
 ch = (char) (ch - 'a' + 'A');
 }

 strOut += ch;
 i++;
 }
 return strOut;
 }

 
 public static String currencyShortFor(String original) {
 if (StringHelper.isBlank(original)) {
 return "";
 } else {
 String shortFor = "";
 double shortForValue = 0;
 DecimalFormat df = new DecimalFormat("#.00");

 try {
 double account = Double.parseDouble(original);
 if (account / 100000000 > 1) {
 shortForValue = account / 100000000;
 shortFor = df.format(shortForValue) + "亿";
 } else if (account / 10000 > 1) {
 shortForValue = account / 10000;
 shortFor = df.format(shortForValue) + "万";
 } else {
 shortFor = original;
 }
 } catch (NumberFormatException e) {
 e.printStackTrace();
 System.err.println("字符串[" + original + "]转换成数字出错");
 }

 return shortFor;
 }
 }

 
 public static String formatDate(String date) {
 if (isBlank(date) || date.length() < 8) {
 return "";
 }
 StringBuffer dateBuf = new StringBuffer();
 dateBuf.append(date.substring(0, 4));
 dateBuf.append("-");
 dateBuf.append(date.substring(4, 6));
 dateBuf.append("-");
 dateBuf.append(date.substring(6, 8));
 return dateBuf.toString();
 }

 
 public static boolean isInteger(String str) {
 Pattern pattern = Pattern.compile("^\d+(\.0)?$", Pattern.CASE_INSENSITIVE);
 return pattern.matcher(str).matches();

 }

 
 public static String substring(String string, int byteCount) throws UnsupportedEncodingException {
 if (isBlank(string)) {
 return string;
 }
 byte[] bytes = string.getBytes("Unicode");// 使用UCS-2编码.
 int viewBytes = 0; // 表示当前的字节数(英文为单字节，中文为双字节的表示方法)
 int ucs2Bytes = 2; // 要截取的字节数，从第3个字节开始,前两位为位序。（UCS-2的表示方法）
 // UCS-2每个字符使用两个字节来编码。
 // ASCII n+=1,i+=2
 // 中文 n+=2,i+=2
 for (; ucs2Bytes < bytes.length && viewBytes < byteCount; ucs2Bytes++) {
 // 奇数位置，如3、5、7等，为UCS2编码中两个字节的第二个字节
 if (ucs2Bytes % 2 == 1) {
 viewBytes++; // 低字节，无论中英文，都算一个字节。
 } else {
 // 当UCS2编码的第一个字节不等于0时，该UCS2字符为汉字，一个汉字算两个字节
 // 高位时，仅中文的高位算一字节。
 if (bytes[ucs2Bytes] != 0) {
 viewBytes++;
 }
 }
 }
 // 截一半的汉字要保留
 if (ucs2Bytes % 2 == 1) {
 ucs2Bytes = ucs2Bytes + 1;
 }
 String result = new String(bytes, 0, ucs2Bytes, "Unicode");// 将字节流转换为java默认编码UTF-8的字符串
 if (bytes.length > ucs2Bytes) {
 result += "...";
 }
 return result;
 }

 
 public static String[] splite(String str, int length) {
 if (StringHelper.isEmpty(str)) {
 return null;
 }
 String[] strArr = new String[(str.length() + length - 1) / length];
 for (int i = 0; i < strArr.length; i++) {
 if (str.length() > i * length + length - 1) {
 strArr[i] = str.substring(i * length, i * length + length - 1);
 } else {
 strArr[i] = str.substring(i * length);
 }
 }
 return strArr;
 }

 
 public static String toUpOneChar(String str, int index) {
 return toUpOrLowOneChar(str, index, 1);
 }

 
 public static String toLowOneChar(String str, int index) {
 return toUpOrLowOneChar(str, index, 0);
 }

 
 public static String toUpOrLowOneChar(String str, int index, int upOrLow) {
 if (StringHelper.isNotEmpty(str) && index > -1 && index < str.length()) {
 char[] chars = str.toCharArray();
 if (upOrLow == 1) {
 chars[index] = Character.toUpperCase(chars[index]);
 } else {
 chars[index] = Character.toLowerCase(chars[index]);
 }
 return new String(chars);
 }
 return str;
 }

 
 public static List split2List(String value, String separator) {
 List ls = new ArrayList();
 int i = 0, j = 0;
 while ((i = value.indexOf(separator, i)) != -1) {
 ls.add(value.substring(j, i));
 ++i;
 j = i;
 }
 ls.add(value.substring(j));
 return ls;
 }

 
 public static String join(String[] strs, String sep) {
 StringBuilder res = new StringBuilder();
 for (int i = 0; i < strs.length; i++) {
 res.append(strs[i] + sep);
 }
 return res.substring(0, res.length() - sep.length());
 }

 
 public static String getUUID() {
 String str = UUID.randomUUID().toString();// 标准的UUID格式为：xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxx(8-4-4-4-12)
 // 去掉"-"符号，不用replaceAll的原因与split一样，replaceAll支持正则表达式，频繁使用时效率不够高(当然偶尔用一下影响也不会特别严重)
 return join(split(str, "-"), "");
 }

 
 public static final String replaceAllStr(String strSrc, String strOld, String strNew) {
 if (strSrc == null || strOld == null || strNew == null)
 return "";

 int i = 0;

 if (strOld.equals(strNew)) // 避免新旧字符一样产生死循环
 return strSrc;

 if ((i = strSrc.indexOf(strOld, i)) >= 0) {
 char[] arr_cSrc = strSrc.toCharArray();
 char[] arr_cNew = strNew.toCharArray();

 int intOldLen = strOld.length();
 StringBuffer buf = new StringBuffer(arr_cSrc.length);
 buf.append(arr_cSrc, 0, i).append(arr_cNew);

 i += intOldLen;
 int j = i;

 while ((i = strSrc.indexOf(strOld, i)) > 0) {
 buf.append(arr_cSrc, j, i - j).append(arr_cNew);
 i += intOldLen;
 j = i;
 }

 buf.append(arr_cSrc, j, arr_cSrc.length - j);

 return buf.toString();
 }

 return strSrc;
 }

 

 public static String htmlEncode(String strSrc) {
 if (strSrc == null)
 return "";

 char[] arr_cSrc = strSrc.toCharArray();
 StringBuffer buf = new StringBuffer(arr_cSrc.length);
 char ch;

 for (int i = 0; i < arr_cSrc.length; i++) {
 ch = arr_cSrc[i];

 if (ch == '<')
 buf.append("<");
 else if (ch == '>')
 buf.append(">");
 else if (ch == '"')
 buf.append(""");
 else if (ch == ''')
 buf.append("'");
 else if (ch == '&')
 buf.append("&");
 else
 buf.append(ch);
 }

 return buf.toString();
 }

 
 public static String htmlEncode(String strSrc, int quotes) {

 if (strSrc == null)
 return "";
 if (quotes == 0) {
 return htmlEncode(strSrc);
 }

 char[] arr_cSrc = strSrc.toCharArray();
 StringBuffer buf = new StringBuffer(arr_cSrc.length);
 char ch;

 for (int i = 0; i < arr_cSrc.length; i++) {
 ch = arr_cSrc[i];
 if (ch == '<')
 buf.append("<");
 else if (ch == '>')
 buf.append(">");
 else if (ch == '"' && quotes == 1)
 buf.append(""");
 else if (ch == ''' && quotes == 2)
 buf.append("'");
 else if (ch == '&')
 buf.append("&");
 else
 buf.append(ch);
 }

 return buf.toString();
 }

 
 public static String htmlDecode(String strSrc) {
 if (strSrc == null)
 return "";
 strSrc = strSrc.replaceAll("<", "<");
 strSrc = strSrc.replaceAll(">", ">");
 strSrc = strSrc.replaceAll(""", """);
 strSrc = strSrc.replaceAll("'", "'");
 strSrc = strSrc.replaceAll("&", "&");
 return strSrc;
 }

 
 public static String toChineseAndHtmlEncode(String str, int quotes) {
 try {
 if (str == null) {
 return "";
 } else {
 str = str.trim();
 str = new String(str.getBytes("ISO8859_1"), "GBK");
 String htmlEncode = htmlEncode(str, quotes);
 return htmlEncode;
 }
 } catch (Exception exp) {
 return "";
 }
 }

 
 public static String str4Table(String str) {
 if (str == null)
 return " ";
 else if (str.equals(""))
 return " ";
 else
 return str;
 }

}

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持考高分网。