怎么在springboot中增加一个过滤器

本篇文章为大家展示了怎么在springboot中增加一个过滤器，内容简明扼要并且容易理解，绝对能使你眼前一亮，通过这篇文章的详细介绍希望你能有所收获。

编写过滤器代码：

package com.neo.filter;
import java.io.IOException;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
public class MyFilter implements Filter {
  @Override
  public void destroy() {
  }
  @Override
  public void doFilter(ServletRequest srequest, ServletResponse sresponse, FilterChain filterChain)
      throws IOException, ServletException {
    HttpServletRequest request = (HttpServletRequest) srequest;
    System.out.println("this is MyFilter,url :"+request.getRequestURI());
    filterChain.doFilter(srequest, sresponse);
  }
  @Override
  public void init(FilterConfig arg0) throws ServletException {
  }
}

编写加载过滤器代码：

package com.neo.conf;
import org.springframework.boot.web.servlet.FilterRegistrationBean;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import com.neo.filter.MyFilter;
import com.neo.filter.MyFilter2;
@Configuration
public class WebConfiguration {
  @Bean
  public FilterRegistrationBean registerFilter() {
    FilterRegistrationBean registration = new FilterRegistrationBean();
    registration.setFilter(new MyFilter());
    registration.addUrlPatterns("/*");
    registration.addInitParameter("paramName", "paramValue");
    registration.setName("MyFilter");
    registration.setOrder(1);
    return registration;
  }
  @Bean
  public FilterRegistrationBean registerFilter2() {
    FilterRegistrationBean registration = new FilterRegistrationBean();
    registration.setFilter(new MyFilter2());
    registration.addUrlPatterns("/*");
    registration.addInitParameter("paramName", "paramValue");
    registration.setName("MyFilter2");
    registration.setOrder(2);
    return registration;
  }
}

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