springBoot配置过滤器

package com.medicine.management_side.filters; import com.alibaba.fastjson.JSONObject; import com.medicine.management_side.utils.RedisUtil; import javax.annotation.Resource; import javax.servlet.*; import javax.servlet.annotation.WebFilter; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import java.io.IOException; import java.io.PrintWriter; //允许在哪个请求上起作用 @WebFilter(urlPatterns={"/patientController/*","/doctorOrderController/*","/doctroController/*","/hospitalController/*","/PatientRegisterHistoryController/*","/MbConsultationRoomRegisterController/*","/MbDoctorRegister/*"},filterName="corsFilter", asyncSupported = true)//urlPatterns过滤的哪些url public class CorsFilter implements Filter { @Resource private RedisUtil redisUtil; @Override public void init(FilterConfig filterConfig) throws ServletException { } @Override public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain chain) throws IOException, ServletException { HttpServletResponse response = (HttpServletResponse)servletResponse; HttpServletRequest request = (HttpServletRequest)servletRequest; String path = ((HttpServletRequest) request).getRequestURI(); System.out.println("具体路径"+path); if(path.startsWith("/patientController/patientLogin")||path.startsWith("/patientController/sendSmsCode")||path.startsWith("/patientController/addPatient")||path.startsWith("/patientController/patientForget")||path.startsWith("/doctroController/loginUser")||path.startsWith("/doctroController/queryLoginDoctor")||path.startsWith("/patientController/uploadFile")){ System.out.println("排除的url就是不过滤的url"); chain.doFilter(servletRequest, servletResponse);//// 排除的url }else{ String isLogin=request.getParameter("isLogin");//传过来的登陆的标示 String username=request.getParameter("username"); if(("".equals(username)||username==null||"".equals(isLogin)||isLogin==null)){ response.setCharacterEncoding("utf-8"); response.setContentType("application/json; charset=utf-8"); PrintWriter writer = response.getWriter(); JSONObject o = new JSONObject(); o.put("code", "04"); // o.put("data", "参数不能为空"); writer.write(o.toString()); }else{ // Object uisLogin= UtilsSession.getSssion(request,username);//根据用户名取出数据 Object uisLogin= redisUtil.get(username);//从redis中获取 System.out.println("==========="+uisLogin); System.out.println("------------------"+username); if(isLogin.equals(uisLogin)){ System.out.println("同一用户"); chain.doFilter(servletRequest, servletResponse); }else{ System.out.println("被挤掉"); response.setCharacterEncoding("utf-8"); response.setContentType("application/json; charset=utf-8"); PrintWriter writer = response.getWriter(); JSONObject o = new JSONObject(); o.put("code", "03"); // o.put("data","jiDiao" ); writer.write(o.toString()); } } } } @Override public void destroy() { } } -----------注意-------- 除了上述配置之外还得在Application启动类中加入此注解 @ServletComponentScan(basePackages = {"com.medicine.management_side.filters"})//包名 public class ManagementSideApplication {