添加Json

src/com/landaiqing/filter/UserSessionFilter.java

@@ -19,7 +19,7 @@ import java.io.IOException;
  */
 @WebFilter("/*")// 过滤器所有的请求
 public class UserSessionFilter implements Filter {
-    private String[] excludeUrls = new String[]{"/login", "/register", "/VerifycodeServlet","/ExUserNameServlet"};
+    private String[] excludeUrls = new String[]{"/login", "/register", "/VerifycodeServlet","/exUserNameServlet"};
 
     @Override
     public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {