电子商务网站建设与管理第二版答案,电商排名前十名品牌,展馆展厅设计方案,做app 的模板下载网站有哪些如下文件内容#xff1a; 这里有特殊字符#xff1a;\n 、\t 、\u4e0a 、\/
我要做的事#xff0c;就是恢复其特殊字符的作用#xff08;而不是打印被转义后的效果#xff09; 直观的看#xff0c;很容易#xff1a;直接替换不就行了 line line.replaceAll(\\n 这里有特殊字符\n 、\t 、\u4e0a 、\/
我要做的事就是恢复其特殊字符的作用而不是打印被转义后的效果 直观的看很容易直接替换不就行了 line line.replaceAll(\\n, \r\n );
line line.replaceAll(\\t, \t );
line line.replaceAll(\\/, / );但是这是
错误的。新生成的文件没有任何改变。这里有个问题以前没弄清楚文本文件中为 \n 在读取后字符串中实际为 \\n 因而正确的替换方法为 line line.replaceAll(\\\\n, \r\n );
line line.replaceAll(\\\\t, \t );
line line.replaceAll(\\\\/, / );接下来就是处理 Unicode码将其还原
来源http://www.cnblogs.com/yuxuan/archive/2011/08/02/2124904.html /** *//*****************************************************
* 功能介绍:将unicode字符串转为汉字
* 输入参数:源unicode字符串
* 输出参数:转换后的字符串
*****************************************************/
static String decodeUnicode( final String dataStr ) {
int start 0;
int end 0;
final StringBuffer buffer new StringBuffer();
while( start -1 ) {
end dataStr.indexOf( \\\\u, start 2 );
String charStr ;
if( end -1 ) {
charStr dataStr.substring( start 2, dataStr.length() );
} else {
charStr dataStr.substring( start 2, end);
}
char letter (char) Integer.parseInt( charStr, 16 ); // 16进制parse整形字符串。
buffer.append( new Character( letter ).toString() );
start end;
}
return buffer.toString();
} 有了 decodeUnicode 方法接下来只需要将文件中匹配 \\uxxxx 这样的转换完即可 static String replace( String s )
{
try {
Pattern regex Pattern.compile(\\\\u[0-9a-z]{4}, Pattern.CASE_INSENSITIVE | Pattern.UNICODE_CASE);
Matcher matcher regex.matcher(s);
StringBuffer sb new StringBuffer();
while (matcher.find()) {
matcher.appendReplacement(sb, decodeUnicode( matcher.group()) );
}
matcher.appendTail(sb);
return sb.toString();
} catch (Exception ex) {
throw new RuntimeException( Something error. );
}
} 总的转换代码 static void readToWrite( File file )
{
BufferedReader bufReader null;
BufferedWriter bufWriter null;
try {
bufReader new BufferedReader( new FileReader(file) );
bufWriter buildWriter( file );
String line null;
while( (line bufReader.readLine()) ! null )
{
line line.replaceAll(\\\\n, \r\n );
line line.replaceAll(\\\\t, \t );
line line.replaceAll(\\\\/, / );
line replace( line );
bufWriter.write( line );
bufWriter.newLine();
}
} catch (IOException e) {
e.printStackTrace();
}
finally{
if( bufReader ! null ){
try {
bufReader.close();
} catch (IOException e) {
e.printStackTrace();
}
bufReader null;
}
if( bufWriter ! null ){
try {
bufWriter.close();
} catch (IOException e) {
e.printStackTrace();
}
bufWriter null;
}
}
}
static BufferedWriter buildWriter( File file ){
BufferedWriter bufWriter null;
try {
String fullName file.getCanonicalPath();
int splitPath fullName.lastIndexOf( \\ );
String path fullName.substring( 0, splitPath );
String name file.getName().replaceAll(\\.txt, \\.txt );
bufWriter new BufferedWriter( new FileWriter( path \\ name ) );
return bufWriter;
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
static String replace( String s )
{
try {
Pattern regex Pattern.compile(\\\\u[0-9a-z]{4}, Pattern.CASE_INSENSITIVE | Pattern.UNICODE_CASE);
Matcher matcher regex.matcher(s);
StringBuffer sb new StringBuffer();
while (matcher.find()) {
matcher.appendReplacement(sb, decodeUnicode( matcher.group()) );
}
matcher.appendTail(sb);
return sb.toString();
} catch (Exception ex) {
throw new RuntimeException( Something error. );
}
}
/** *//*****************************************************
* 功能介绍:将unicode字符串转为汉字
* 输入参数:源unicode字符串
* 输出参数:转换后的字符串
*****************************************************/
static String decodeUnicode( final String dataStr ) {
int start 0;
int end 0;
final StringBuffer buffer new StringBuffer();
while( start -1 ) {
end dataStr.indexOf( \\\\u, start 2 );
String charStr ;
if( end -1 ) {
charStr dataStr.substring( start 2, dataStr.length() );
} else {
charStr dataStr.substring( start 2, end);
}
char letter (char) Integer.parseInt( charStr, 16 ); // 16进制parse整形字符串。
buffer.append( new Character( letter ).toString() );
start end;
}
return buffer.toString();
} /**将中文转为unicode 及转回中文函数转为unicode
*/
public static void writeUnicode(final DataOutputStream out, final String value) {
try {
final String unicode gbEncoding( value );
final byte[] data unicode.getBytes();
final int dataLength data.length;
System.out.println( Data Length is: dataLength );
System.out.println( Data is: value );
out.writeInt( dataLength ); //先写出字符串的长度
out.write( data, 0, dataLength ); //然后写出转化后的字符串
} catch (IOException e) {
}
}
public static String gbEncoding( final String gbString ) {
char[] utfBytes gbString.toCharArray();
String unicodeBytes ;
for( int byteIndex 0; byteIndex utfBytes.length; byteIndex ) {
String hexB Integer.toHexString( utfBytes[ byteIndex ] );
if( hexB.length() 2 ) {
hexB 00 hexB;
}
unicodeBytes unicodeBytes \\\\u hexB;
}
System.out.println( unicodeBytes is: unicodeBytes );
return unicodeBytes;
}
