乱码过滤器EncodingFilter

昨天写一份作业，项目建立为UTF-8，数据库也是UTF-8，却出现了中文乱码问题，查了很多资料，决定使用乱码过滤器来解决这个问题：

类名称：EncodingFilter.java

package Encoding;

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;


/**
 * Servlet Filter implementation class EncodingFilter
 */
public class EncodingFilter implements Filter {


    /**
     * Default constructor. 
     */
    public EncodingFilter() {
        // TODO Auto-generated constructor stub
    }


/**
* @see Filter#destroy()
*/
public void destroy() {
// TODO Auto-generated method stub
}


/**
* @see Filter#doFilter(ServletRequest, ServletResponse, FilterChain)
*/
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
request.setCharacterEncoding("UTF-8");
response.setCharacterEncoding("UTF-8");
chain.doFilter(request, response);
}


/**
* @see Filter#init(FilterConfig)
*/
public void init(FilterConfig fConfig) throws ServletException {
// TODO Auto-generated method stub
}


}

配置web.xml

<filter>
<filter-name>encodingFilter</filter-name>
<filter-class>Encoding.EncodingFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>encodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>

这样就可以了！