過濾器使用案例:
package Filter;
import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import sun.misc.BASE64Decoder;
import sun.misc.BASE64Encoder;
import javax.servlet.*;
import javax.servlet.annotation.WebFilter;
import javax.servlet.annotation.WebInitParam;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.Map;
/**
* @Author: lvyk
* @Description: 過濾器
* @Date: 2020/5/26 16:29
*/
@Component//http://10.7.213.151:9007/test/api/v1/mytest
@WebFilter(filterName = "myFilter",urlPatterns = "/api/v1/*",/*通配符(*)表示對所有的web資源進行攔截*/
init