本文主要是介绍java读取配置文件(properties)的时候,unicode码转utf-8——java改变默认Unicode编码显示中文,希望对大家解决编程问题提供一定的参考价值,需要的开发者们随着小编来一起学习吧!
有时我们在读取properties结尾的配置文件的时候,如果配置文件中有中文,那么我们读取到的是unicode码的中文,需要我们在转换一下,代码如下
/*** 将配置文件中的Unicode 转 utf-8 汉字 * @param 原始字符串* @return 转换后的格式的字符串*/public static String unicodeToChina(String str) { Charset set = Charset.forName("UTF-16"); Pattern p = Pattern.compile("\\\\u([0-9a-fA-F]{4})"); Matcher m = p.matcher( str ); int start = 0 ; int start2 = 0 ; StringBuffer sb = new StringBuffer(); while( m.find( start ) ) { start2 = m.start() ; if( start2 > start ){ String seg = str.substring(start, start2) ; sb.append( seg ); } String code = m.group( 1 ); int i = Integer.valueOf( code , 16 ); byte[] bb = new byte[ 4 ] ; bb[ 0 ] = (byte) ((i >> 8) & 0xFF ); bb[ 1 ] = (byte) ( i & 0xFF ) ; ByteBuffer b = ByteBuffer.wrap(bb); sb.append( String.valueOf( set.decode(b) ).trim() ); start = m.end() ; } start2 = str.length() ; if( start2 > start ){ String seg = str.substring(start, start2) ; sb.append( seg ); } return sb.toString() ; }
测试 单个字段
public static void main(String[] args) {String str = unicodeToChina("\u672a\u6765"); System.out.println(str); }
整个文件unicode不显示乱码,改变默认Unicode编码显示中文
public static void main(String[] args) throws IOException {BufferedReader reader = new BufferedReader(new InputStreamReader(new FileInputStream(new File("src/project.properties"))));BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(new File("src/paper2.txt"))));String str = "";while ((str = reader.readLine()) != null) {str = unicodeToChina(str);writer.write(str);writer.newLine();}writer.flush();writer.close();}
转载地址:
https://blog.csdn.net/weixin_38756990/article/details/72870207?utm_medium=distribute.pc_relevant.none-task-blog-BlogCommendFromMachineLearnPai2-3.compare&depth_1-utm_source=distribute.pc_relevant.none-task-blog-BlogCommendFromMachineLearnPai2-3.compare
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