four ways to handle server garbled
1.jsp Encoding setting error causes garbled charactersuse the page command in a JSP file to specify the MIME type of the response result, such as <%@ page language= "java" contenttype= "Text/html;charset=utf-8"%>
2. When the request parameter is accepted, the encoding format is set in the response responserequest.setcharacterencoding ("UTF-8" )response.setcharacterencoding ("UTF-8")
3. Handling garbled characters by using string to set character setsindexstring = Java.net.URLDecoder.decode (indexstring, "UTF-8");indexstring = new String (indexstring.getbytes ("UTF-8"), "UTF-8");
4. Using Custom Filters
Package com.cdu.yige.filter;
Import java.io.IOException;
Import Javax.servlet.Filter;
Import Javax.servlet.FilterChain;
Import Javax.servlet.FilterConfig;
Import javax.servlet.ServletException;
Import Javax.servlet.ServletRequest;
Import Javax.servlet.ServletResponse;
Import Javax.servlet.http.HttpServletRequest;
public class Encodingfilter implements Filter {
Private String charset = "UTF-8";
@Override
public void Destroy () {}
@Override
public void DoFilter (ServletRequest request, servletresponse response,
Filterchain chain) throws IOException, Servletexception {
HttpServletRequest req = (httpservletrequest) request;
if (Req.getmethod (). Equalsignorecase ("GET")) {
if (! ( Req instanceof Getrequest)) {
req = new Getrequest (req, CharSet);//Processing GET request encoding
}
} else {
Req.setcharacterencoding (charset);//processing Post request encoding
}
Chain.dofilter (req, response);
}
@Override
public void init (Filterconfig fconfig) throws Servletexception {
String charset = Fconfig.getinitparameter ("charset");
if (charset! = null &&!charset.isempty ()) {
This.charset = CharSet;
}
}
}
filtering for Get modePackage com.cdu.yige.filter;
Import java.io.UnsupportedEncodingException;
Import Java.util.Map;
Import Javax.servlet.http.HttpServletRequest;
Import Javax.servlet.http.HttpServletRequestWrapper;
/**
* Handle the GET request parameters!
* @author Lucien
*
*/
public class Getrequest extends Httpservletrequestwrapper {
private HttpServletRequest request;
Private String CharSet;
Public Getrequest (HttpServletRequest request, String CharSet) {
Super (Request);
This.request = Request;
This.charset = CharSet;
}
@Override
public string GetParameter (string name) {
Get parameters
String value = request.getparameter (name);
if (value = = null) return null;//if NULL, returns null directly
try {
Returns after encoding a parameter
return new String (Value.getbytes ("Iso-8859-1"), CharSet);
} catch (Unsupportedencodingexception e) {
throw new RuntimeException (e);
}
}
@SuppressWarnings ({"Unchecked", "Rawtypes"})
@Override
Public Map Getparametermap () {
map<string,string[]> map = Request.getparametermap ();
if (map = = null) return map;
Traverse map to encode each value
For (String Key:map.keySet ()) {
String[] values = Map.get (key);
for (int i = 0; i < values.length; i++) {
try {
Values[i] = new String (values[i].getbytes ("Iso-8859-1"), CharSet);
} catch (Unsupportedencodingexception e) {
throw new RuntimeException (e);
}
}
}
return after processing
return map;
}
@Override
Public string[] Getparametervalues (String name) {
String[] values = super.getparametervalues (name);
for (int i = 0; i < values.length; i++) {
try {
Values[i] = new String (values[i].getbytes ("Iso-8859-1"), CharSet);
} catch (Unsupportedencodingexception e) {
throw new RuntimeException (e);
}
}
return values;
}
}
Filter Web. xml file Configuration< Filter > <Filter-name>Encodingfilter</Filter-name> <Filter-class>Com.cdu.yige.filter.EncodingFilter</Filter-class> </ Filter> < filter-mapping> <Filter-name>Encodingfilter</Filter-name> <Url-pattern>/*</Url-pattern> </ filter-mapping>
5. Modify the character set configuration of the Tomcat server Server.xml, the final processing of the Get mode and post mode garbled. <connector port= "8080" protocol= "http/1.1"
connectiontimeout= "20000"
Uriencoding= "UTF-8"
Usebodyencodingforuri= "true"
redirectport= "8443"/>
6.get Request mode and Post request method generated by the garbled processing method slightly different, please Baidu see. Other methods see: Http://wenku.baidu.com/view/f27afc4bfe4733687e21aa6c.html http://blog.csdn.net/pcxbest/article/details/ 24418303 http://my.oschina.net/u/267081/blog/137383 http://huifeideyu.blog.51cto.com/6764601/1176432/http blog.163.com/shuangyuehuixin%40126/blog/static/16276137420113242322311/http://www.iteye.com/topic/251743
Summary of Java Web application Chinese garbled processing
