几个非常有用的字符串处理函数!

    技术2022-05-11  83

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    在JSP中,不象PHP那样有许多的现成的字符串处理函数,在jsp中你需要自己编写,下面是几个常用的函数,非常有用!-------------------------------中文处理函数:getStrpublic String getStr(String string){try{String temp_p=string;byte[] temp_t=temp_p.getBytes("ISO8859-1");String temp=new String(temp_t);return temp;}catch(Exception e){}return "null";}------------------------------------字符串替代函数:在line中,用newString 替代 oldStringpublic String replace( String line, String oldString, String newString ){int i=0;if ( ( i=line.indexOf( oldString, i ) ) >= 0 ) {char [] line2 = line.toCharArray();char [] newString2 = newString.toCharArray();int oLength = oldString.length();StringBuffer buf = new StringBuffer(line2.length);buf.append(line2, 0, i).append(newString2);i += oLength;int j = i;while( ( i=line.indexOf( oldString, i ) ) > 0 ) {buf.append(line2, j, i-j).append(newString2);i += oLength;j = i;}buf.append(line2, j, line2.length - j);return buf.toString();}return line;}一个实际的运用是用将"/r/n"等回车符替代成"<br>"-------------------------------------------下面的函数可以将'<'替换成'<',可以用来发表HTML源代码public String escapeHTML(String input){if(input==null||input.length()==0)return input;StringBuffer buf=new StringBuffer(input.length()+6);char ch='a';for(int i=0;i<input.length();i++){ch=input.charAt(i);if(ch=='<'){buf.append("<");}else if(ch=='>'){buf.append(">");}else{buf.append(ch);}}return buf.toString();}欢迎光临www.dukejava.com!


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