setencodingfilter.java

来自「are are are are are are are are are are 」· Java 代码 · 共 62 行

package enova.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;

public class SetEncodingFilter
        implements Filter {

    protected String encoding = null;
    
    protected FilterConfig filterConfig = null;
    
    protected boolean ignore = true;
    
    public void destroy() {
        this.encoding = null;
        this.filterConfig = null;
    }

    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);
    }
    
    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;
    }
    

    protected String selectEncoding(ServletRequest request) {
        return (this.encoding);
    }
    
    public FilterConfig getFilterConfig() {
        return filterConfig;
    }
    
    public void setFilterConfig(FilterConfig filterConfig) {
        this.filterConfig = filterConfig;
    }
    
}