AJAX Chinese hash issues
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A hash of the reasons for using the XMLHTTP object Post form, is the default with UTF-8 characters sent. If you have a website is to use the UTF-8 encoded, then receive the data is normal if your page coding is GB2312 the case, the problem has come, and the data from POST UTF-8, and the entire site you GB2312 is used to show, then all the Chinese characters will all become garbled.
The solution:
Used for filtration UTF-8 encoded on the trip.
Simple example:
Public class Encode
Implements Filter
(
Protected String encoding = "GBK";
Protected FilterConfig filterConfig = null;
/ **
* Client will report Encoding settings ignored, we set up the mandatory use of the Encoding?
* The default is to ignore
* /
Protected boolean ignore = true;
Implements Filter
(
Protected String encoding = "GBK";
Protected FilterConfig filterConfig = null;
/ **
* Client will report Encoding settings ignored, we set up the mandatory use of the Encoding?
* The default is to ignore
* /
Protected boolean ignore = true;
Public void destroy ()
(
This.encoding = null;
This.filterConfig = null;
)
(
This.encoding = null;
This.filterConfig = null;
)
/ **
* On the current request for encoding settings (if the client does not choose to ignore it installed)
* @ Param request with the current SevletRequest
* @ Param result of the current processing SevletResponse
* @ Param chain linked the current Filter
* @ Exception IOException I / O error occurred
* @ Exception ServletException Servelt mistakes in the future
* /
Public void doFilter (ServletRequest request, ServletResponse response,
FilterChain chain)
Throws IOException, ServletException
(
/ / If installing a cover client or the client settings set to null, the application
/ / Current encoding settings (read from the initialization parameters)
If (ignore | | (request.getCharacterEncoding () == null))
(
String encoding = selectEncoding (request);
* On the current request for encoding settings (if the client does not choose to ignore it installed)
* @ Param request with the current SevletRequest
* @ Param result of the current processing SevletResponse
* @ Param chain linked the current Filter
* @ Exception IOException I / O error occurred
* @ Exception ServletException Servelt mistakes in the future
* /
Public void doFilter (ServletRequest request, ServletResponse response,
FilterChain chain)
Throws IOException, ServletException
(
/ / If installing a cover client or the client settings set to null, the application
/ / Current encoding settings (read from the initialization parameters)
If (ignore | | (request.getCharacterEncoding () == null))
(
String encoding = selectEncoding (request);
If (encoding! = Null)
(
Request.setCharacterEncoding (encoding);
)
)
(
Request.setCharacterEncoding (encoding);
)
)
Chain.doFilter (request, response);
)
)
/ **
* Initialization
* @ Param filterConfig Filter Settings Object
* /
Public void init (FilterConfig filterConfig)
Throws ServletException
(
* Initialization
* @ Param filterConfig Filter Settings Object
* /
Public void init (FilterConfig filterConfig)
Throws ServletException
(
This.filterConfig = filterConfig;
This.encoding = filterConfig.getInitParameter ( "encoding");
String value = filterConfig.getInitParameter ( "ignore");
If (value == null)
(
This.ignore = true;
)
Else if (value.equalsIgnoreCase ( "true"))
(
This.ignore = true;
)
Else if (value.equalsIgnoreCase ( "yes"))
(
This.ignore = true;
)
Else
(
This.ignore = false;
)
This.encoding = filterConfig.getInitParameter ( "encoding");
String value = filterConfig.getInitParameter ( "ignore");
If (value == null)
(
This.ignore = true;
)
Else if (value.equalsIgnoreCase ( "true"))
(
This.ignore = true;
)
Else if (value.equalsIgnoreCase ( "yes"))
(
This.ignore = true;
)
Else
(
This.ignore = false;
)
)
/ **
* <b> Function: to return to the current settings Encoding </ b> <br>
*
* @ Param
* @ Return
* @ Exception
* /
* <b> Function: to return to the current settings Encoding </ b> <br>
*
* @ Param
* @ Return
* @ Exception
* /
Protected String selectEncoding (ServletRequest request)
(
Return (this.encoding);
)
(
Return (this.encoding);
)
)
Deployment description:
Deployment description:
<filter>
<filter-name> Encoding </ filter-name>
<filter-class> Com.pub.dragon.sys.Encode </ filter-class>
<init-param>
<param-name> Encoding </ param-name>
<param-value> UTF-8 </ param-value>
</ Init-param>
<init-param>
<param-name> Ignore </ param-name>
<param-value> True </ param-value>
</ Init-param>
</ Filter>
<filter-name> Encoding </ filter-name>
<filter-class> Com.pub.dragon.sys.Encode </ filter-class>
<init-param>
<param-name> Encoding </ param-name>
<param-value> UTF-8 </ param-value>
</ Init-param>
<init-param>
<param-name> Ignore </ param-name>
<param-value> True </ param-value>
</ Init-param>
</ Filter>
<filter-mapping>
<filter-name> Encoding </ filter-name>
<url-pattern> / * </ Url-pattern>
</ Filter-mapping>
<filter-name> Encoding </ filter-name>
<url-pattern> / * </ Url-pattern>
</ Filter-mapping>
Another very important point is, if returned to the XML format so we must bring <? Xml version = "1.0" encoding = "GBK"> Otherwise customer acceptance will be wrong ...
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