封裝自定義接口filter

包含兩個方法,第一個過濾的路徑數組,第二個為過濾器執行的順序.spring boot 會按照order值的大小，從小到大的順序來依次過濾。

package com.theeternity.common.baseFilter;

import javax.servlet.Filter;

/**

* @program: ApiBoot

* @description: 封裝Filter

* @author: TheEternity Zhang

* @create: 2019-02-17 13:08

*/

public interface MappingFilter extends Filter {

String[] addUrlPatterns();

int order();

}

書寫具體的filter

package com.theeternity.beans.filterConfig;

import com.theeternity.common.baseFilter.MappingFilter;

import javax.servlet.*;

import javax.servlet.FilterConfig;

import java.io.IOException;

/**

* @program: ApiBoot

* @description: 權限過濾器

* @author: TheEternity Zhang

* @create: 2019-02-17 13:14

*/

public class AuthFilter implements MappingFilter {

@Override

public String[] addUrlPatterns() {

return new String[]{"/*"};

}

@Override

public int order() {

return 0;

}

@Override

public void init(FilterConfig filterConfig) throws ServletException {

}

@Override

public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {

//具體邏輯

}

@Override

public void destroy() {

}

}

注入bean到容器

package com.theeternity.beans.filterConfig;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

import org.springframework.boot.web.servlet.FilterRegistrationBean;

import org.springframework.context.annotation.Bean;

import org.springframework.context.annotation.Configuration;

/**

* @program: ApiBoot

* @description: 注冊過濾器

* @author: TheEternity Zhang

* @create: 2019-02-17 13:10

*/

@Configuration

public class FilterConfig {

private Logger logger= LoggerFactory.getLogger(FilterConfig.class);

@Bean

public FilterRegistrationBean registFilter() {

FilterRegistrationBean registration = new FilterRegistrationBean();

AuthFilter authFilter=new AuthFilter();

registration.setFilter(authFilter);

registration.addUrlPatterns(authFilter.addUrlPatterns());

registration.setOrder(authFilter.order());

registration.setName("AuthFilter");

return registration;

}

}

總結

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