SpringBoot中设置自定义拦截器 斧头帮

SpringBoot中设置自动以拦截器需要写一个类继承HandlerInterceptorAdapter并重写preHandle方法

例子

public class AuthorityIntercept extends HandlerInterceptorAdapter {

// 放行的URL列表
private List<String> allowList = Arrays.asList("/front/**","/label/**");

private static final PathMatcher PATH_MATCHER = new AntPathMatcher();

@Value("#{configProperties['upload_path']}")
private String upload_path;

private boolean isSetApplication = false;


@Autowired
private RedisService redisService;
@Override
public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler)
throws Exception {
  if(!isSetApplication) {
  isSetApplication = true;
  ServletContext application = request.getSession().getServletContext();
  application.setAttribute(Constants.FILE_PATH, upload_path);    
}

if (!checkAllowAccess(request.getRequestURI())) {
  String token = request.getHeader("token");
  String userInfo = null;
  if(token != null){
    userInfo = this.redisService.get(token);
  }
  if (userInfo == null) {
  /*//判断是否是ajax请求
    if(isAjaxRequest(request)) {
      response.setStatus(ResultCode.USER_SESSION_INVALID.getCode());
      Result result = new Result(ResultCode.USER_SESSION_INVALID);
      result.setData(request.getContextPath() + "/front/smallLogin");
      response.getWriter().print(ResponseHelper.createResponse(result));
    } else {
      //session为空,跳到登录页
      response.sendRedirect(request.getContextPath() + "/front/login");
    }*/
  response.getWriter().write("{\"code\":4023,msg:\"please login\"}");
  return false;
  }
}
  return super.preHandle(request, response, handler);
}

/**
* 检查URI是否放行
* 
* @param URI
* @return 返回检查结果
*/
private boolean checkAllowAccess(String URI) {
  if (!URI.startsWith("/")) {
    URI = "/" + URI;
  }
  for (String allow : allowList) {
    if (PATH_MATCHER.match(allow, URI)) {
    return true;
  }
}
  return false;
}

/**
* 判断是否是ajax请求
* 
* @param request
* @return
*/
private boolean isAjaxRequest(HttpServletRequest request) {
  // 判断是否为ajax请求,默认不是
  boolean isAjaxRequest = false;
  if (StringUtils.isNotBlank(request.getHeader("x-requested-with"))
    && request.getHeader("x-requested-with").equals("XMLHttpRequest")) {
    isAjaxRequest = true;
  }
  return isAjaxRequest;
}

public List<String> getAllowList() {
  return allowList;
}

public void setAllowList(List<String> allowList) {
  this.allowList = allowList;
}
}

并需要些一个类来继承WebMvcConfigurerAdapter,并重写addInterceptors方法来定义自定义的拦截器

/**
* 静态资源处理
* @author maming
* @date 2018年5月14日
*/
@Configuration
public class WebMvcConfig extends WebMvcConfigurerAdapter{

@Value("${web.upload-path}")
private String path;

@Override
public void addResourceHandlers(ResourceHandlerRegistry registry) {

  registry.addResourceHandler("/upload/ueditor/**").addResourceLocations("file:" + path + "ueditor/");  //虚拟路径设置
  super.addResourceHandlers(registry);
}
@Override
public void addInterceptors(InterceptorRegistry registry) {
  registry.addInterceptor(new AuthorityIntercept()).addPathPatterns("/**");
}

}
原文地址:https://www.cnblogs.com/guanjunhui/p/9039587.html