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Struts+Hibernate中解決漢字編碼問題

來源:互聯網網民  2008-06-01 01:11:18  評論

1.修改web.XML文件,在<web-app>標簽後增加如下內容.

<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.創建類文件(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;

}

}

 
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1.修改web.XML文件,在<web-app>標簽後增加如下內容. <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.創建類文件(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; } }
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