修改代理服务-3

13693261870

2023-09-27 f7b2d885bc64a0598facb2b5a0d89dcdf5921902

 src/main/java/com/moon/server/helper/HttpHelper.java

@@ -1,5 +1,7 @@
package com.moon.server.helper;

import com.moon.server.entity.all.StaticData;
import com.moon.server.entity.sys.ResEntity;
import org.apache.http.*;
import org.apache.http.client.config.CookieSpecs;
import org.apache.http.client.config.RequestConfig;
@@ -18,10 +20,10 @@
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.OutputStream;
import java.net.HttpCookie;
import java.net.URI;
import java.net.URISyntaxException;
import java.nio.charset.StandardCharsets;
import java.util.Enumeration;

/**
@@ -51,7 +53,7 @@
        }
    }

    public void service(HttpServletRequest request, HttpServletResponse response, String url, String cookie) throws ServletException, IOException {
    public void service(HttpServletRequest request, HttpServletResponse response, ResEntity entity, String url) throws ServletException, IOException {
        HttpRequest proxyRequest;
        if (request.getHeader(HttpHeaders.CONTENT_LENGTH) != null || request.getHeader(HttpHeaders.TRANSFER_ENCODING) != null) {
            proxyRequest = newProxyRequestWithEntity(request, url);
@@ -63,13 +65,10 @@
        // copyRequestHeaders(request, proxyRequest, host);
        //setXrForwardedForHeader(request, proxyRequest);

        if (!StringHelper.isEmpty(cookie)) {
            proxyRequest.addHeader("Cookie", cookie + "; ");
        }
        // if (!StringHelper.isEmpty(cookie)) proxyRequest.addHeader("Cookie", cookie + "; ")

        CloseableHttpClient client = null;
        HttpResponse proxyResponse = null;

        try {
            client = this.createHttpClient();
            proxyResponse = client.execute(host, proxyRequest);
@@ -83,7 +82,7 @@
            if (statusCode == HttpServletResponse.SC_NOT_MODIFIED) {
                response.setIntHeader(HttpHeaders.CONTENT_LENGTH, 0);
            } else {
                copyResponseEntity(proxyResponse, response);
                copyResponseEntity(proxyResponse, request, response, entity);
            }
        } catch (Exception ex) {
            throw new ServletException(ex.getMessage());
@@ -267,12 +266,62 @@
        return theUrl;
    }

    protected void copyResponseEntity(HttpResponse proxyResponse, HttpServletResponse response) throws IOException {
    protected void copyResponseEntity(HttpResponse proxyResponse, HttpServletRequest request, HttpServletResponse response, ResEntity res) throws IOException {
        HttpEntity entity = proxyResponse.getEntity();
        if (entity != null) {
            //String str = EntityUtils.toString(entity, "UTF-8")
            OutputStream servletOutputStream = response.getOutputStream();
            entity.writeTo(servletOutputStream);
        if (null == entity) {
            return;
        }

        switch (res.getCategory()) {
            case 2:
                copeGeoService(proxyResponse, request, response, res);
                break;
            case 3:
                copeSjService(proxyResponse, request, response, res);
                break;
            default:
                entity.writeTo(response.getOutputStream());
                break;
        }
    }

    private void copeGeoService(HttpResponse proxyResponse, HttpServletRequest request, HttpServletResponse response, ResEntity res) throws IOException {
        if (StaticData.GET_CAPABILITIES.equals(res.getBak())) {
            //
        }

        proxyResponse.getEntity().writeTo(response.getOutputStream());
    }

    private void copeSjService(HttpResponse proxyResponse, HttpServletRequest request, HttpServletResponse response, ResEntity res) throws IOException {
        Header[] headers = proxyResponse.getHeaders("content-type");
        if (null != headers && headers.length > 0 && headers[0].getValue().contains(StaticData.TEXT_XML)) {
            String str = filterStr(request, response, res, EntityUtils.toString(proxyResponse.getEntity(), "UTF-8"));
            byte[] bytes = str.getBytes(StandardCharsets.UTF_8);
            response.setContentLength(bytes.length);
            response.getOutputStream().write(bytes);
        } else {
            proxyResponse.getEntity().writeTo(response.getOutputStream());
        }
    }

    private String filterStr(HttpServletRequest request, HttpServletResponse response, ResEntity res, String str) {
        if (str.contains(res.getUrl())) {
            String proxyUrl = res.getProxy().replace("{token}", response.getHeader("token"));
            proxyUrl = request.getRequestURL().substring(0, request.getRequestURL().indexOf(proxyUrl) + proxyUrl.length());
            str = str.replace(res.getUrl(), proxyUrl);

            if (!StringHelper.isEmpty(res.getArgs())) {
                // str = str.replace("?" + res.getArgs(), "").replace("&" + res.getArgs(), "")
                str = str.replace("?" + res.getArgs() + "\"", "\"").replace("&" + res.getArgs() + "\"", "\"")
                        .replace("?" + res.getArgs() + "&", "?").replace("&" + res.getArgs() + "&", "&");
            }

            if (StaticData.I3 == res.getCategory() && str.contains(StaticData.REST_LAYER)) {
                str = str.replace(res.getUrl().replace("/v6/wmts/", StaticData.REST_LAYER), proxyUrl.replace("/proxy/", "/proxy/rest/"));
            }
        }

        return str;
    }
}