解决Springboot @WebFilter拦截器未生效问题

Z时代
2024-01-10
分类：综合

问题描述

@WebFilter(filterName = “ssoFilter”,urlPatterns = “/*”)

未生效拦截器

解决方法

在springboot启动类上添加

@ServletComponentScan(basePackages = “full.package.path”)

路径替换为@WebFilter所在包

补充知识：在spring boot中使用@WebFilter配置filter（包括排除URL）

我就废话不多说了，大家还是直接看代码吧~


@WebFilter(urlPatterns = "/*")
@Order(value = 1)
public class TestFilter implements Filter {
  private static final Set<String> ALLOWED_PATHS = Collections.unmodifiableSet(new HashSet<>(
      Arrays.asList("/main/excludefilter", "/login", "/logout", "/register")));
  @Override
  public void init(FilterConfig filterConfig) throws ServletException {
    System.out.println("init-----------filter");
  }
  @Override
  public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain) throws IOException, ServletException {
    HttpServletRequest request = (HttpServletRequest) req;
    HttpServletResponse response = (HttpServletResponse) res;
    String path = request.getRequestURI().substring(request.getContextPath().length()).replaceAll("[/]+$", "");
    boolean allowedPath = ALLOWED_PATHS.contains(path);
    if (allowedPath) {
      System.out.println("这里是不需要处理的url进入的方法");
      chain.doFilter(req, res);
    }
    else {
      System.out.println("这里是需要处理的url进入的方法");
    }
  }
  @Override
  public void destroy() {
    System.out.println("destroy----------filter");
  }
}