java中文转换Unicode编码.doc

Java中文Unicode中文转换转换背景：把中文转换成Unicode编码再直接输出，程序解析XML，properties，以及JS打印提示信息后再把Unicode编码转回中文就没有问题了。提供两种方法把中文转换成Unicode编码：第一种办法：Eclipse中JS转换法1. web项目中随便新建一个 *.js文件，将文件的编码属性设置为utf8 (右击文件从弹出菜单中选择“properties”在弹出的属性对话框中设置“Text file encoding”选项)2. 打开新建的*.js文件,输入: “要转换的汉字”.3. 按下Ctrl+Shift+F 或右键点击文件内容从弹出菜单中选择“Format Document”选型，效果出来了。总结：必须将汉字放到”中间，否则不转换._第二种办法：JAVA程序实现法public class CharacterSetToolkit /* Creates a new instance of CharacterSetToolkit */ public CharacterSetToolkit() private static final char hexDigit = 0,1,2,3,4,5,6,7,8,9,A,B,C,D,E,F ; private static char toHex(int nibble) return hexDigit(nibble & 0xF); /* * 将字符串编码成 Unicode 。 * param theString 待转换成Unicode编码的字符串。 * param escapeSpace 是否忽略空格。 * return 返回转换后Unicode编码的字符串。 */ public static String toUnicode(String theString, boolean escapeSpace) int len = theString.length(); int bufLen = len * 2; if (bufLen 0) bufLen = Integer.MAX_VALUE; StringBuffer outBuffer = new StringBuffer(bufLen); for(int x=0; x 61) & (aChar 127) if (aChar = ) outBuffer.append(); outBuffer.append(); continue; outBuffer.append(aChar); continue; switch(aChar) case : if (x = 0 | escapeSpace) outBuffer.append(); outBuffer.append( ); break; case t:outBuffer.append(); outBuffer.append(t); break; case n:outBuffer.append(); outBuffer.append(n); break; case r:outBuffer.append(); outBuffer.append(r); break; case f:outBuffer.append(); outBuffer.append(f); break; case =: / Fall through case : / Fall through case #: / Fall through case !: outBuffer.append(); outBuffer.append(aChar); break; default: if (aChar 0x007e) outBuffer.append(); outBuffer.append(u); outBuffer.append(toHex(aChar 12) & 0xF); outBuffer.append(toHex(aChar 8) & 0xF); outBuffer.append(toHex(aChar 4) & 0xF); outBuffer.append(toHex( aChar & 0xF); else outBuffer.append(aChar); return outBuffer.toString(); /* * 从 Unicode 码转换成编码前的特殊字符串。 * param in Unicode编码的字符数组。 * param off 转换的起始偏移量。 * param len 转换的字符长度。 * param convtBuf 转换的缓存字符数组。 * return 完成转换，返回编码前的特殊字符串。 */ public String fromUnicode(char in, int off, int len, char convtBuf) if (convtBuf.length len) int newLen = len * 2; if (newLen 0) newLen = Integer.MAX_VALUE; convtBuf = new charnewLen; char aChar; char out = convtBuf; int outLen = 0; int end = off + len; while (off end) aChar = inoff+; if (aChar = ) aChar = inoff+; if (aChar = u) / Read the xxxx int value = 0; for (int i = 0; i 4; i+) aChar = inoff+; switch (aChar) case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7: case 8: case 9: value = (value 4) + aChar - 0; break; case a: case b: case c: case d: case e: case f: value = (value 4) + 10 + aChar - a; break; case A: case B: case C: case D: case E: case F: value = (value 4) + 10 + aChar - A; break; default: throw new IllegalArgumentException( Malformed uxxxx encoding.); outoutLen+ = (char) value; else if (aChar = t) aChar = t; else if (aChar = r) aChar = r; else if (aChar = n) aChar = n; else if (aChar = f) aChar = f; outoutLen+ = aChar; else outoutLen+ = (char) aChar; return new String(out, 0, outLen); public st