1:構造一個實現 Filter 接口的過濾器,並在類上添加@component註釋:
notice1:若不添加,則需在spring中注入該bean,不然會報錯。
package com.dev.filter; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.stereotype.Component; import javax.servlet.*; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import java.io.IOException; import java.util.*; /** * Created by zgq7 on 2019/6/6. */ @Component public class BaseFilter implements Filter { private static final Logger log = LoggerFactory.getLogger(BaseFilter.class); @Override public void init(FilterConfig filterConfig) throws ServletException { Map<Object, Object> map = new LinkedHashMap<>(10); map.put("filterName", filterConfig.getFilterName()); log.info("filter config indclude :{}", map); } @Override public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException { HttpServletRequest request = (HttpServletRequest) servletRequest; HttpServletResponse response = (HttpServletResponse) servletResponse; String uri = request.getRequestURI(); Map<Object, Object> map = new HashMap<>(10); map.put("url", request.getRequestURL()); map.put("uri", uri); map.put("requestType", request.getMethod()); log.info("{}", map); filterChain.doFilter(request, response); } @Override public void destroy() { log.info("filter destroyed ..."); } }
2:編寫過濾器配置類,並在類上添加@Configuration註釋,告訴spring聲明這是一個配置類:
package com.dev.config; import com.dev.filter.BaseFilter; import org.springframework.boot.web.servlet.FilterRegistrationBean; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import java.util.*; /** * Created by zgq7 on 2019/6/6. */ @Configuration public class SpringConfig { @Bean public FilterRegistrationBean<BaseFilter> filterFilterRegistrationBean(BaseFilter baseFilter) { FilterRegistrationBean<BaseFilter> filterFilterRegistrationBean = new FilterRegistrationBean<>(); //攔截路徑配置 List<String> uriList = new ArrayList<>(10); uriList.add("/dev/*"); filterFilterRegistrationBean.setFilter(baseFilter); filterFilterRegistrationBean.setEnabled(true); filterFilterRegistrationBean.setUrlPatterns(uriList); filterFilterRegistrationBean.setName("baseFilter"); filterFilterRegistrationBean.setOrder(1); return filterFilterRegistrationBean; } }
3:編寫一個controller進行測試:
package com.dev.controller; import com.google.common.collect.ImmutableMap; import org.springframework.web.bind.annotation.*; import java.util.Map; /** * Created by zgq7 on 2019/6/6. */ @RestController @RequestMapping(value = "/dev") public class BaseController { @GetMapping(value = "") public Map<Object, Object> get() { return ImmutableMap.of("code", "get"); } @PutMapping(value = "t") public Map<Object, Object> t() { return ImmutableMap.of("code", "put"); } @PostMapping(value = "s") public Map<Object, Object> s() { return ImmutableMap.of("code", "post"); } }
4:使用psotMan進行測試:
5:控制檯如下:
輸出該日誌是因爲過濾器攔截到了 /dev 路徑下的請求才輸出的。可自行測試哦~~~