www.pudn.com > project.rar > EncodingFilter.java

package cn.com.iaspec.encodingfilter.web; 
 
import javax.servlet.ServletException; 
import javax.servlet.ServletContext; 
import javax.servlet.Filter; 
import javax.servlet.FilterChain; 
import javax.servlet.FilterConfig; 
import javax.servlet.http.HttpSession; 
import javax.servlet.ServletRequest; 
import javax.servlet.ServletResponse; 
import javax.servlet.http.HttpServletRequest; 
import javax.servlet.http.HttpServletResponse; 
import java.io.IOException; 
 
public class EncodingFilter 
    implements Filter{ 
 
  private FilterConfig config=null; 
 
  // default to ASCII 
  private String targetEncoding="ASCII"; 
 
  public void init(FilterConfig config) 
      throws ServletException{ 
    this.config=config; 
    this.targetEncoding=config.getInitParameter("encoding"); 
  } 
 
  public void destroy(){ 
    config=null; 
    targetEncoding=null; 
  } 
 
  public void doFilter(ServletRequest srequest,ServletResponse sresponse, 
      FilterChain chain) 
      throws IOException,ServletException{ 
 
    HttpServletRequest request=(HttpServletRequest)srequest; 
    request.setCharacterEncoding(targetEncoding); 
    // move on to the next 
    chain.doFilter(srequest,sresponse); 
  } 
}