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package com.dsideal.gw.Handler;
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import com.dsideal.gw.Bean.RetBean;
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import com.dsideal.gw.GwApplication;
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import com.dsideal.gw.Util.JwtUtil;
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import com.dsideal.gw.Config.GatewayConfig;
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import com.jfinal.handler.Handler;
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import com.jfinal.kit.StrKit;
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import com.jfinal.upload.MultipartRequest;
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import com.jfinal.upload.UploadFile;
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import com.jfinal.plugin.activerecord.Record;
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import io.jsonwebtoken.Claims;
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import okhttp3.*;
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import org.apache.commons.io.IOUtils;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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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.*;
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import java.util.*;
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import java.util.concurrent.TimeUnit;
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public class RouterHandler extends Handler {
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private static final Logger logger = LoggerFactory.getLogger(RouterHandler.class);
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// 常量定义
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private static final class Constants {
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static final String CONTENT_TYPE_JSON = "application/json";
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static final String CONTENT_TYPE_MULTIPART = "multipart/form-data";
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static final String HEADER_AUTHORIZATION = "Authorization";
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static final String HEADER_COOKIE = "Cookie";
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static final String HEADER_ACCEPT = "Accept";
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static final String HEADER_CONTENT_TYPE = "Content-Type";
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static final String ERROR_MESSAGE = "服务繁忙，请稍后重试";
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}
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// 静态资源扩展名
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private static final Set<String> STATIC_EXTENSIONS = new HashSet<>(Arrays.asList(
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"html", "js", "css", "png", "jpg", "jpeg", "gif", "ico", "svg",
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"woff", "woff2", "ttf", "eot", "map", "json", "xml", "txt"
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));
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// OkHttp客户端配置
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private static final OkHttpClient OK_HTTP_CLIENT = new OkHttpClient.Builder()
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.connectTimeout(GatewayConfig.CONNECT_TIMEOUT, TimeUnit.MILLISECONDS)
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.readTimeout(GatewayConfig.READ_TIMEOUT, TimeUnit.MILLISECONDS)
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.writeTimeout(GatewayConfig.WRITE_TIMEOUT, TimeUnit.MILLISECONDS)
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.connectionPool(new ConnectionPool(GatewayConfig.MAX_CONNECTIONS,
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GatewayConfig.KEEP_ALIVE_DURATION,
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TimeUnit.SECONDS))
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.build();
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@Override
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public void handle(String target, HttpServletRequest req, HttpServletResponse res, boolean[] isHandled) {
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try {
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// 处理OPTIONS请求
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if (req.getMethod().equals("OPTIONS")) {
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handleOptionsRequest(res, isHandled);
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return;
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}
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String servletPath = req.getServletPath();
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String queryString = req.getQueryString();
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// 处理静态资源
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if (isStaticResource(servletPath)) {
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next.handle(target, req, res, isHandled);
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return;
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}
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// 处理内部调用
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if (isInternalCall(servletPath, res, isHandled)) {
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return;
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}
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// 处理认证
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if (!isAuthenticated(req, res, isHandled)) {
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return;
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}
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// 获取转发URL
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String forwardUrl = getForwardUrl(servletPath);
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if (forwardUrl == null) {
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logger.error("无效的请求路径: {}", servletPath);
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renderJson(res, new RetBean(RetBean.ERROR, Constants.ERROR_MESSAGE).toString());
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isHandled[0] = true;
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return;
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}
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// 记录请求日志
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logRequest(req, forwardUrl);
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// 根据请求方法处理
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switch (req.getMethod()) {
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case "GET":
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handleGetRequest(req, res, isHandled, forwardUrl, queryString);
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break;
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case "POST":
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if (isMultipartRequest(req)) {
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handleFileUpload(req, res, isHandled, forwardUrl);
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} else {
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handlePostRequest(req, res, isHandled, forwardUrl, queryString);
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}
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break;
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default:
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logger.warn("不支持的请求方法: {}", req.getMethod());
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renderJson(res, new RetBean(RetBean.ERROR, Constants.ERROR_MESSAGE).toString());
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isHandled[0] = true;
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}
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} catch (Exception e) {
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logger.error("请求处理异常", e);
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renderJson(res, new RetBean(RetBean.ERROR, Constants.ERROR_MESSAGE).toString());
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isHandled[0] = true;
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}
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}
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// 处理OPTIONS请求
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private void handleOptionsRequest(HttpServletResponse res, boolean[] isHandled) {
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addCorsHeaders(res);
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res.setStatus(HttpServletResponse.SC_OK);
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isHandled[0] = true;
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}
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// 添加CORS头信息
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private void addCorsHeaders(HttpServletResponse res) {
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// 设置允许的源
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for (String origin : GatewayConfig.ALLOWED_ORIGINS) {
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if ("*".equals(origin)) {
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res.setHeader("Access-Control-Allow-Origin", "*");
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break;
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}
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}
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// 设置允许的方法
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res.setHeader("Access-Control-Allow-Methods", String.join(",", GatewayConfig.ALLOWED_METHODS));
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// 设置允许的头信息
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res.setHeader("Access-Control-Allow-Headers", String.join(",", GatewayConfig.ALLOWED_HEADERS));
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// 设置是否允许发送Cookie
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res.setHeader("Access-Control-Allow-Credentials", String.valueOf(GatewayConfig.ALLOW_CREDENTIALS));
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// 设置预检请求的缓存时间
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res.setHeader("Access-Control-Max-Age", String.valueOf(GatewayConfig.MAX_AGE));
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}
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// 处理GET请求
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private void handleGetRequest(HttpServletRequest req, HttpServletResponse res,
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boolean[] isHandled, String forwardUrl, String queryString) {
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try {
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Request request = buildGetRequest(req, forwardUrl, queryString);
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executeRequest(request, res);
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isHandled[0] = true;
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} catch (Exception e) {
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logger.error("GET请求处理失败: {}", forwardUrl, e);
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renderJson(res, new RetBean(RetBean.ERROR, Constants.ERROR_MESSAGE).toString());
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isHandled[0] = true;
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}
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}
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// 处理POST请求
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private void handlePostRequest(HttpServletRequest req, HttpServletResponse res,
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boolean[] isHandled, String forwardUrl, String queryString) {
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try {
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Request request = buildPostRequest(req, forwardUrl, queryString);
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executeRequest(request, res);
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isHandled[0] = true;
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} catch (Exception e) {
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logger.error("POST请求处理失败: {}", forwardUrl, e);
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renderJson(res, new RetBean(RetBean.ERROR, Constants.ERROR_MESSAGE).toString());
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isHandled[0] = true;
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}
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}
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// 处理文件上传
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private void handleFileUpload(HttpServletRequest req, HttpServletResponse res,
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boolean[] isHandled, String forwardUrl) {
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try {
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MultipartRequest mp = new MultipartRequest(req);
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List<UploadFile> files = mp.getFiles();
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if (files.isEmpty()) {
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logger.error("文件上传失败: 未找到上传文件");
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renderJson(res, new RetBean(RetBean.ERROR, Constants.ERROR_MESSAGE).toString());
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isHandled[0] = true;
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return;
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}
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Request request = buildFileUploadRequest(files.get(0), forwardUrl);
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executeRequest(request, res);
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isHandled[0] = true;
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} catch (Exception e) {
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logger.error("文件上传异常: {}", forwardUrl, e);
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renderJson(res, new RetBean(RetBean.ERROR, Constants.ERROR_MESSAGE).toString());
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isHandled[0] = true;
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}
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}
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// 构建GET请求
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private Request buildGetRequest(HttpServletRequest req, String forwardUrl, String queryString) {
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Request.Builder builder = new Request.Builder()
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.url(buildUrl(forwardUrl, queryString));
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addCommonHeaders(req, builder);
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return builder.build();
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}
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// 构建POST请求
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private Request buildPostRequest(HttpServletRequest req, String forwardUrl, String queryString) {
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Request.Builder builder = new Request.Builder()
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.url(buildUrl(forwardUrl, queryString));
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addCommonHeaders(req, builder);
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return builder.post(createRequestBody(req)).build();
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}
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// 构建文件上传请求
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private Request buildFileUploadRequest(UploadFile uploadFile, String forwardUrl) {
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MediaType mediaType = MediaType.parse(Constants.CONTENT_TYPE_MULTIPART);
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RequestBody requestBody = RequestBody.create(uploadFile.getFile(), mediaType);
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MultipartBody body = new MultipartBody.Builder()
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.setType(MultipartBody.FORM)
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.addFormDataPart("file", uploadFile.getFileName(), requestBody)
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.build();
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return new Request.Builder()
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.url(forwardUrl)
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.post(body)
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.build();
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}
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// 添加通用头信息
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private void addCommonHeaders(HttpServletRequest req, Request.Builder builder) {
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// 处理Authorization头
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String authHeader = req.getHeader(Constants.HEADER_AUTHORIZATION);
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if (!StrKit.isBlank(authHeader)) {
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builder.addHeader(Constants.HEADER_AUTHORIZATION, authHeader);
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builder.addHeader(Constants.HEADER_ACCEPT, "application/json;odata=verbose");
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}
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// 处理Cookie
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javax.servlet.http.Cookie[] cookies = req.getCookies();
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if (cookies != null && cookies.length > 0) {
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StringBuilder cookieString = new StringBuilder();
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for (Cookie cookie : cookies) {
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if (cookieString.length() > 0) {
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cookieString.append("; ");
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}
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cookieString.append(cookie.getName()).append("=").append(cookie.getValue());
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}
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builder.addHeader(Constants.HEADER_COOKIE, cookieString.toString());
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}
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// 如果还有Cookie头，也添加进去
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String cookieHeader = req.getHeader(Constants.HEADER_COOKIE);
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if (!StrKit.isBlank(cookieHeader)) {
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builder.addHeader(Constants.HEADER_COOKIE, cookieHeader);
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}
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// 添加其他重要头信息
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addImportantHeaders(req, builder);
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}
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// 添加重要头信息
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private void addImportantHeaders(HttpServletRequest req, Request.Builder builder) {
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String[] importantHeaders = {
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Constants.HEADER_ACCEPT,
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Constants.HEADER_CONTENT_TYPE,
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"User-Agent",
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"Referer",
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"Origin",
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"Host"
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};
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for (String header : importantHeaders) {
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String value = req.getHeader(header);
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if (!StrKit.isBlank(value)) {
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builder.addHeader(header, value);
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}
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}
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}
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// 创建请求体
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private RequestBody createRequestBody(HttpServletRequest req) {
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FormBody.Builder formBodyBuilder = new FormBody.Builder();
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Enumeration<String> parameterNames = req.getParameterNames();
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while (parameterNames.hasMoreElements()) {
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String paramName = parameterNames.nextElement();
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String paramValue = req.getParameter(paramName);
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formBodyBuilder.add(paramName, paramValue);
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}
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return formBodyBuilder.build();
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}
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// 执行请求
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private void executeRequest(Request request, HttpServletResponse res) throws IOException {
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try {
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Response response = OK_HTTP_CLIENT.newCall(request).execute();
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if (response.isSuccessful()) {
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// 处理Set-Cookie响应头
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Headers headers = response.headers();
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for (String name : headers.names()) {
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if ("Set-Cookie".equalsIgnoreCase(name)) {
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for (String value : headers.values(name)) {
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res.addHeader("Set-Cookie", value);
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}
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}
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}
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ResponseBody body = response.body();
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if (body != null) {
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String contentType = response.header(Constants.HEADER_CONTENT_TYPE);
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if (contentType != null && contentType.startsWith("image/")) {
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handleImageResponse(res, body, contentType);
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} else {
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handleTextResponse(res, body);
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}
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} else {
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logger.error("响应体为空: {}", request.url());
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renderJson(res, new RetBean(RetBean.ERROR, Constants.ERROR_MESSAGE).toString());
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}
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} else {
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logger.error("请求失败: {} - {}", request.url(), response.code());
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renderJson(res, new RetBean(RetBean.ERROR, Constants.ERROR_MESSAGE).toString());
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}
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} catch (Exception e) {
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logger.error("请求执行异常: {}", request.url(), e);
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renderJson(res, new RetBean(RetBean.ERROR, Constants.ERROR_MESSAGE).toString());
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}
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}
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// 处理图片响应
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private void handleImageResponse(HttpServletResponse res, ResponseBody body, String contentType) throws IOException {
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res.setContentType(contentType);
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res.setHeader("Cache-Control", "no-store");
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res.setHeader("Pragma", "no-cache");
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res.setDateHeader("Expires", 0);
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try (InputStream inputStream = body.byteStream()) {
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IOUtils.copy(inputStream, res.getOutputStream());
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}
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}
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// 处理文本响应
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private void handleTextResponse(HttpServletResponse res, ResponseBody body) throws IOException {
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String responseBody = body.string();
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renderJson(res, responseBody);
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}
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// 渲染JSON响应
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private void renderJson(HttpServletResponse res, String body) {
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// 添加CORS头信息
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addCorsHeaders(res);
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res.setHeader("Cache-Control", "no-cache");
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res.setCharacterEncoding("UTF-8");
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res.setContentType(Constants.CONTENT_TYPE_JSON);
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try {
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res.getWriter().println(body);
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res.getWriter().flush();
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} catch (IOException e) {
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logger.error("响应写入异常", e);
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throw new RuntimeException(e);
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}
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}
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// 检查认证
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private boolean isAuthenticated(HttpServletRequest req, HttpServletResponse res, boolean[] isHandled) {
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String servletPath = req.getServletPath();
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if (GwApplication.whiteSet.contains(servletPath)) {
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return true;
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}
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// 检查Session
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Record rPerson = JwtUtil.getPersonInfo(req);
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if (isValidPersonInfo(rPerson)) {
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return true;
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}
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// 检查JWT
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String jwtToken = req.getHeader(Constants.HEADER_AUTHORIZATION);
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if (!StrKit.isBlank(jwtToken)) {
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Claims claims = JwtUtil.getClaims(jwtToken);
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if (claims != null) {
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return true;
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}
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}
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logger.warn("认证失败: {}", servletPath);
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renderJson(res, new RetBean(RetBean.ERROR, Constants.ERROR_MESSAGE).toString());
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isHandled[0] = true;
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return false;
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}
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// 验证人员信息
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private boolean isValidPersonInfo(Record rPerson) {
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return rPerson != null &&
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!StrKit.isBlank(rPerson.getStr("bureau_id")) &&
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!StrKit.isBlank(rPerson.getStr("identity_id")) &&
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!StrKit.isBlank(rPerson.getStr("person_id"));
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}
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// 获取转发URL
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private String getForwardUrl(String servletPath) {
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int xie1 = servletPath.indexOf('/');
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int xie2 = servletPath.indexOf('/', xie1 + 1);
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if (xie1 == -1 || xie2 == -1) {
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return null;
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}
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String prefix = servletPath.substring(xie1 + 1, xie2);
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String action = servletPath.substring(xie2 + 1);
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if (!GwApplication.routeList.containsKey(prefix)) {
|
|
|
return null;
|
|
|
}
|
|
|
|
|
|
return GwApplication.routeList.get(prefix) + "/" + prefix + "/" + action;
|
|
|
}
|
|
|
|
|
|
// 检查是否为静态资源
|
|
|
private boolean isStaticResource(String servletPath) {
|
|
|
if (servletPath.equals("/")) {
|
|
|
return true;
|
|
|
}
|
|
|
int lastDotIndex = servletPath.lastIndexOf('.');
|
|
|
if (lastDotIndex == -1) {
|
|
|
return false;
|
|
|
}
|
|
|
String extension = servletPath.substring(lastDotIndex + 1).toLowerCase();
|
|
|
return STATIC_EXTENSIONS.contains(extension);
|
|
|
}
|
|
|
|
|
|
// 检查是否为内部调用
|
|
|
private boolean isInternalCall(String servletPath, HttpServletResponse res, boolean[] isHandled) {
|
|
|
if (servletPath.endsWith("/internal/")) {
|
|
|
logger.warn("内部接口调用: {}", servletPath);
|
|
|
renderJson(res, new RetBean(RetBean.ERROR, Constants.ERROR_MESSAGE).toString());
|
|
|
isHandled[0] = true;
|
|
|
return true;
|
|
|
}
|
|
|
return false;
|
|
|
}
|
|
|
|
|
|
// 检查是否为multipart请求
|
|
|
private boolean isMultipartRequest(HttpServletRequest req) {
|
|
|
String contentType = req.getContentType();
|
|
|
return contentType != null && contentType.startsWith(Constants.CONTENT_TYPE_MULTIPART);
|
|
|
}
|
|
|
|
|
|
// 构建URL
|
|
|
private String buildUrl(String baseUrl, String queryString) {
|
|
|
return queryString != null ? baseUrl + "?" + queryString : baseUrl;
|
|
|
}
|
|
|
|
|
|
// 记录请求日志
|
|
|
private void logRequest(HttpServletRequest req, String forwardUrl) {
|
|
|
logger.info("请求转发: {} {} -> {}", req.getMethod(), req.getRequestURI(), forwardUrl);
|
|
|
}
|
|
|
} |
