js,java实现escape()和unescape()函数解决以给方式提交中中文参数问题

系统管理员 2022-08-13 19:38 104阅读 0赞

1. 请求发送页面test.htm

<html>  
<script>  
function go()\{  
 self.location.href="[http://aaa.bbb.com/search.jsp?SearchType=2&Keyword="+escape(escape][http_aaa.bbb.com_search.jsp_SearchType_2_Keyword_escape_escape]("车仁表"));  
\}  
</script>  
<a href="\#" οnclick="go()">车仁表</a>  
</html>

2.请求接收页面search.jsp

<%@ page contentType="text/html; charset=GBK"> <%! private final static byte\[\] val = \{ 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F \}; public static String escape(String src) \{ int i; char j; StringBuffer tmp = new StringBuffer(); tmp.ensureCapacity(src.length() \* 6); for (i = 0; i < src.length(); i++) \{ j = src.charAt(i); if (Character.isDigit(j) || Character.isLowerCase(j) || Character.isUpperCase(j)) tmp.append(j); else if (j < 256) \{ tmp.append("%"); if (j < 16) tmp.append("0"); tmp.append(Integer.toString(j, 16)); \} else \{ tmp.append("%u"); tmp.append(Integer.toString(j, 16)); \} \} return tmp.toString(); \} public static String unescape2(String src) \{ StringBuffer tmp = new StringBuffer(); tmp.ensureCapacity(src.length()); int lastPos = 0, pos = 0; char ch; while (lastPos < src.length()) \{ pos = src.indexOf("%", lastPos); if (pos == lastPos) \{ if (src.charAt(pos + 1) == 'u') \{ ch = (char) Integer.parseInt(src .substring(pos + 2, pos + 6), 16); tmp.append(ch); lastPos = pos + 6; \} else \{ ch = (char) Integer.parseInt(src .substring(pos + 1, pos + 3), 16); tmp.append(ch); lastPos = pos + 3; \} \} else \{ if (pos == -1) \{ tmp.append(src.substring(lastPos)); lastPos = src.length(); \} else \{ tmp.append(src.substring(lastPos, pos)); lastPos = pos; \} \} \} return tmp.toString(); \} public static String unescape(String s) \{ StringBuffer sbuf = new StringBuffer(); int i = 0; int len = s.length(); while (i < len) \{ int ch = s.charAt(i); if ('A' <= ch && ch <= 'Z') \{ sbuf.append((char) ch); \} else if ('a' <= ch && ch <= 'z') \{ sbuf.append((char) ch); \} else if ('0' <= ch && ch <= '9') \{ sbuf.append((char) ch); \} else if (ch == '-' || ch == '\_'|| ch == '.' || ch == '!' || ch == '~' || ch == '\*'|| ch == '/'' || ch == '(' || ch == ')') \{ sbuf.append((char) ch); \} else if (ch == '%') \{ int cint = 0; if ('u' != s.charAt(i + 1)) \{ cint = (cint << 4) | val\[s.charAt(i + 1)\]; cint = (cint << 4) | val\[s.charAt(i + 2)\]; i += 2; \} else \{ cint = (cint << 4) | val\[s.charAt(i + 2)\]; cint = (cint << 4) | val\[s.charAt(i + 3)\]; cint = (cint << 4) | val\[s.charAt(i + 4)\]; cint = (cint << 4) | val\[s.charAt(i + 5)\]; i += 5; \} sbuf.append((char) cint); \} else \{ sbuf.append((char) ch); \} i++; \} return sbuf.toString(); \} %> <% String sSearchStr = request.getParameter("Keyword"); // 搜索字符串 sSearchStr = unescape2(sSearchStr); out.print("sSearchStr =============================== "+sSearchStr ); %>

转自：[http://www.blogjava.net/Unmi/archive/2007/08/23/138814.html][http_www.blogjava.net_Unmi_archive_2007_08_23_138814.html]

[http_aaa.bbb.com_search.jsp_SearchType_2_Keyword_escape_escape]: http://aaa.bbb.com/search.jsp?SearchType=2&Keyword="+escape%28escape
[http_www.blogjava.net_Unmi_archive_2007_08_23_138814.html]: http://www.blogjava.net/Unmi/archive/2007/08/23/138814.html