过滤器的模拟——一组过滤器

main程序

import com.enson.chan.EditorFilter;
import com.enson.chan.Filter;
import com.enson.chan.HTMLFilter;

public class Main {
	public static void main(String[] args) {

		Filter[] filters = { new HTMLFilter(), new EditorFilter() };
		String msg = "<script/>,qqqqccc";

		for (Filter f : filters) {
			msg = f.doFilter(msg);
		}

		System.out.println(msg);
	}
}

filter接口

package com.enson.chan;

public interface Filter {
	
	public String doFilter(String str);

}

filter实现类

package com.enson.chan;


public class EditorFilter implements Filter {

	@Override
	public String doFilter(String str) {
		// TODO Auto-generated method stub
		return str.replaceAll("qq", "mm").replaceAll("cc", "DBMS");
	}

}

package com.enson.chan;


public class HTMLFilter implements Filter {

	@Override
	public String doFilter(String str) {
		// TODO Auto-generated method stub
		return str.replaceAll("<", "[").replaceAll(">", "]");
	}

}