zoukankan      html  css  js  c++  java
  • spring boot 使用过滤器

    //启动类添加注解
    @ServletComponentScan
    package com.baiwang.invoice.utils;
    
    import java.io.IOException;
    import java.util.HashMap;
    import java.util.Map;
    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.annotation.WebFilter;
    import javax.servlet.http.HttpServletRequest;
    
    /**
     * Created by ChengLuchao on 2017/8/1.
     */
    // 过滤器添加注解
    @WebFilter(filterName="myFilter",urlPatterns="/*") public class KeyWordFilter implements Filter { // private FilterConfig filterConfig; public static HashMap keyMap = null; public static String path; @Override public void init(FilterConfig filterConfig) throws ServletException { System.out.println("-----------------------------------------启动"); // this.filterConfig = filterConfig; // String keyWordPath = filterConfig.getInitParameter("key"); path = filterConfig.getServletContext().getRealPath("keyword.properties"); System.out.println(path); } @Override public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException { System.out.println("----------------------------------------执行"); HttpServletRequest req = (HttpServletRequest) request; // if (keyMap == null) { // keyMap = (HashMap) PropertiesUtil.readProperties(path); // } keyMap = new HashMap(); keyMap.put("ccc","clclclclclcl"); if (req.getMethod().equals("POST")) { chain.doFilter(new KeyWordRequestWrapper(req, keyMap), response); Map map = request.getParameterMap(); for (Object key: map.keySet()) { if (keyMap.get(key) != null) { map.put(keyMap.get(key),map.get(key)); map.remove(key); } } request.setAttribute("map",map); } else { chain.doFilter(request, response); } } @Override public void destroy() { // this.filterConfig = null; System.out.println("----------------------------------------销毁"); } }
  • 相关阅读:
    结构体排序
    字符串转下标
    格式控制1
    Prime
    n阶导函数存在与n阶可导的区别
    winrar
    android 上传文件(表单),表单填写格式分析
    android form表单上传文件
    Android排错:has leaked window com.android.internal.policy.impl.PhoneWindow$ that was originally added here
    android 软键盘Enter键图标的设置 android:imeOptions
  • 原文地址:https://www.cnblogs.com/chenglc/p/7275223.html
Copyright © 2011-2022 走看看