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struts+hibernate中解决汉字编码问题
1.修改web.xml文件,在＜web-app＞标签后增加如下内容.
＜filter＞
＜filter-name＞set character encoding＜/filter-name＞
＜filter-class＞com.company.demo.util.setencodingfilter＜/filter-class＞
＜init-param＞
＜param-name＞encoding＜/param-name＞
＜param-value＞gb2312＜/param-value＞
＜/init-param＞
＜/filter＞
＜filter-mapping＞
＜filter-name＞set character encoding＜/filter-name＞
＜url-pattern＞/*＜/url-pattern＞
＜/filter-mapping＞
＜servlet＞ |
2.创建类文件(setencodingfilter.
java)
package com.company.demo.util;
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.unavailableexception;
/**
* set all httprequest encoding
*/
public class setencodingfilter
implements filter {
/**
* the default character encoding to set for requests that pass through
* this filter.
*/
protected string encoding = null;
/**
* the filter configuration object we are associated with. if this value
* is null, this filter instance is not currently configured.
*/
protected filterconfig filterconfig = null;
/**
* should a character encoding specified by the client be ignored?
*/
protected boolean ignore = true;
/**
* take this filter out of service.
*/
public void destroy() {
this.encoding = null;
this.filterconfig = null;
}
/**
* select and set (if specified) the character encoding to be used to
* interpret request parameters for this request.
*
* @param request the servlet request we are processing
* @param result the servlet response we are creating
* @param chain the filter chain we are processing
*
* @exception ioexception if an input/output error occurs
* @exception servletexception if a servlet error occurs
*/
public void dofilter(
servletrequest request,
servletresponse response,
filterchain chain) throws ioexception, servletexception {
if (ignore (request.getcharacterencoding() == null)) {
request.setcharacterencoding(selectencoding(request));
}
chain.dofilter(request, response);
}
/**
* place this filter into service.
* @param filterconfig the filter configuration 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") value.equalsignorecase("yes"))
this.ignore = true;
else
this.ignore = false;
}
/**
* select an appropriate character encoding to be used, based on the
* characteristics of the current request and/or filter initialization
* parameters. if no character encoding should be set, return
* ＜code＞null＜/code＞.
* ＜p＞
* the default implementation unconditionally returns the value configured
* by the ＜strong＞encoding＜/strong＞ initialization parameter for this
* filter.
*
* @param request the servlet request we are processing
*/
protected string selectencoding(servletrequest request) {
return (this.encoding);
}
/**
* returns the filterconfig.
* @return filterconfig
*/
public filterconfig getfilterconfig() {
return filterconfig;
}
/**
* sets the filterconfig.
* @param filterconfig the filterconfig to set
*/
public void setfilterconfig(filterconfig filterconfig) {
this.filterconfig = filterconfig;
}
} |
