实现：
链条和节点：
public class Process implements Filter {
private List<Filter> filters = new ArrayList<>();
int index = 0;
public void add(Filter filter) {
filters.add(filter);
}
// 调用filter的方法
@Override
public void doFilter(Request request, Reponse reponse, Process process) {
if (index == filters.size())
return;
Filter fc = filters.get(index);
index++;
fc.doFilter(request, reponse, process);
}
}
处理结点：
public class SenstiveFilter implements Filter {
@Override
public void doFilter(Request request, Reponse reponse,Process process) {
request.request = request.request.replaceAll("不想学习","爱学习").concat("----》SenstiveFilter");
process.doFilter(request, reponse, process);
reponse.reponse = reponse.reponse.concat("----》SenstiveFilter");
}
}
public class ScriptFilter implements Filter {
@Override
public void doFilter(Request request,Reponse reponse,Process process) {
request.request = request.request.replaceAll("<","[").replaceAll(">", "]").concat("----》ScriptFilter");
process.doFilter(request, reponse, process);
reponse.reponse = reponse.reponse.concat("----》ScriptFilter");
}
}
解析：
