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package com.ruoyi.common.core.utils.web;
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import com.alibaba.fastjson.JSON;
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import com.ruoyi.common.core.exception.CheckedException;
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import org.bouncycastle.util.encoders.Base64;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import org.springframework.http.HttpHeaders;
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import org.springframework.http.MediaType;
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import org.springframework.http.server.reactive.ServerHttpRequest;
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import org.springframework.util.Assert;
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import org.springframework.web.bind.annotation.ResponseBody;
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import org.springframework.web.context.request.RequestContextHolder;
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import org.springframework.web.context.request.ServletRequestAttributes;
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import org.springframework.web.method.HandlerMethod;
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import javax.servlet.http.Cookie;
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import javax.servlet.http.HttpServletRequest;
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import javax.servlet.http.HttpServletResponse;
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import java.io.IOException;
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import java.io.PrintWriter;
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import java.io.UnsupportedEncodingException;
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import java.nio.charset.StandardCharsets;
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public class WebUtils extends org.springframework.web.util.WebUtils
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{
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private final Logger logger = LoggerFactory.getLogger(WebUtils.class);
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private static final String BASIC_ = "Basic ";
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// /**
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// * 判断是否ajax请求 spring ajax 返回含有 ResponseBody 或者 RestController注解
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// *
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// * @param handlerMethod HandlerMethod
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// * @return 是否ajax请求
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// */
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// public boolean isBody(HandlerMethod handlerMethod)
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// {
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// ResponseBody responseBody = ClassUtils.getAnnotation(handlerMethod, ResponseBody.class);
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// return responseBody != null;
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// }
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/**
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* 读取cookie
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*
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* @param name cookie name
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* @return cookie value
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*/
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public String getCookieVal(String name)
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{
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HttpServletRequest request = WebUtils.getRequest();
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Assert.notNull(request, "request from RequestContextHolder is null");
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return getCookieVal(request, name);
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}
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/**
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* 读取cookie
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*
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* @param request HttpServletRequest
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* @param name cookie name
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* @return cookie value
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*/
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public String getCookieVal(HttpServletRequest request, String name)
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{
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Cookie cookie = getCookie(request, name);
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return cookie != null ? cookie.getValue() : null;
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}
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/**
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* 清除 某个指定的cookie
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*
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* @param response HttpServletResponse
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* @param key cookie key
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*/
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public void removeCookie(HttpServletResponse response, String key)
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{
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setCookie(response, key, null, 0);
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}
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/**
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* 设置cookie
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*
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* @param response HttpServletResponse
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* @param name cookie name
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* @param value cookie value
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* @param maxAgeInSeconds maxage
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*/
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public void setCookie(HttpServletResponse response, String name, String value, int maxAgeInSeconds)
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{
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Cookie cookie = new Cookie(name, value);
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cookie.setPath("/");
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cookie.setMaxAge(maxAgeInSeconds);
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cookie.setHttpOnly(true);
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response.addCookie(cookie);
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}
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/**
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* 获取 HttpServletRequest
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*
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* @return {HttpServletRequest}
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*/
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public static HttpServletRequest getRequest()
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{
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return ((ServletRequestAttributes) RequestContextHolder.getRequestAttributes()).getRequest();
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}
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/**
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* 获取 HttpServletResponse
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*
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* @return {HttpServletResponse}
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*/
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public HttpServletResponse getResponse()
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{
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return ((ServletRequestAttributes) RequestContextHolder.getRequestAttributes()).getResponse();
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}
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/**
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* 返回json
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*
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* @param response HttpServletResponse
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* @param result 结果对象
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*/
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public void renderJson(HttpServletResponse response, Object result)
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{
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renderJson(response, result, MediaType.APPLICATION_JSON_VALUE);
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}
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/**
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* 返回json
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*
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* @param response HttpServletResponse
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* @param result 结果对象
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* @param contentType contentType
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*/
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public void renderJson(HttpServletResponse response, Object result, String contentType)
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{
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response.setCharacterEncoding("UTF-8");
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response.setContentType(contentType);
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try (PrintWriter out = response.getWriter())
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{
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out.append(JSON.toJSONString(result));
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}
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catch (IOException e)
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{
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logger.error(e.getMessage(), e);
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}
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}
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/**
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* 从request 获取CLIENT_ID
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*
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* @return
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* @throws UnsupportedEncodingException
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*/
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public static String[] getClientId(ServerHttpRequest request) throws UnsupportedEncodingException
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{
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String header = request.getHeaders().getFirst(HttpHeaders.AUTHORIZATION);
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if (header == null || !header.startsWith(BASIC_))
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{
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throw new CheckedException("请求头中client信息为空");
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}
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byte[] base64Token = header.substring(6).getBytes("UTF-8");
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byte[] decoded;
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try
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{
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decoded = Base64.decode(base64Token);
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}
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catch (IllegalArgumentException e)
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{
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throw new CheckedException("Failed to decode basic authentication token");
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}
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String token = new String(decoded, StandardCharsets.UTF_8);
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int delim = token.indexOf(":");
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if (delim == -1)
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{
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throw new CheckedException("Invalid basic authentication token");
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}
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return new String[] { token.substring(0, delim), token.substring(delim + 1) };
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}
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}
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