下面的代码为设置页面的编码问题
package Filter;
import javax.servlet.*;
import javax.servlet.annotation.WebFilter;
import java.io.IOException;
/**
* 设置所有页面的编码
*/
@WebFilter("/*")
public class setEnCoding implements Filter {
@Override
public void init(FilterConfig filterConfig) throws ServletException {
}
@Override
public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
ServletRequest request = servletRequest;
ServletResponse response = servletResponse;
//设编
request.setCharacterEncoding("UTF-8");
response.setContentType("text/html;charset=utf-8");
filterChain.doFilter(servletRequest,servletResponse);
}
@Override
public void destroy() {
}
}
下面的代码设置的是指定特定的servlet通过和加了防跳墙等
package Filter;
import javax.servlet.*;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.io.IOException;
@WebFilter("/*") //拦截所有
public class StopUser implements Filter {
@Override
public void init(FilterConfig filterConfig) throws ServletException {
}
@Override
public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
//转化类型，要使用到路径
HttpServletRequest servletRequest1 = (HttpServletRequest) servletRequest;
HttpServletResponse servletResponse1 = (HttpServletResponse) servletResponse;
//路径 得到请求行的资源名称
String requestURI = servletRequest1.getRequestURI();
//防跳墙
HttpSession session = servletRequest1.getSession();
//如果是登录界面，验证码，Login（处理表单）注册 处理注册 这五个直接放走
if (requestURI.endsWith("/login.jsp") || requestURI.endsWith("/Code") || requestURI.endsWith("/Login") || requestURI.endsWith("/register.jsp") || requestURI.endsWith("/register")){
//放行走
filterChain.doFilter(servletRequest,servletResponse);
}else if (session == null || session.getAttribute("fangtiqoqiang") == null){
servletResponse1.sendRedirect("login.jsp");
}else if (session != null || session.getAttribute("fangtiaoqiao") != null){
filterChain.doFilter(servletRequest,servletResponse);
}
}
@Override
public void destroy() {
}
}
