ars.invoke.channel.http.StandardHttpRequester Maven / Gradle / Ivy

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package ars.invoke.channel.http;

import java.util.Map;
import java.util.Set;
import java.util.Date;
import java.util.Locale;
import java.util.HashMap;
import java.util.Map.Entry;
import java.util.Collection;
import java.io.File;
import java.io.OutputStream;
import java.io.FileOutputStream;
import java.io.ByteArrayOutputStream;

import javax.servlet.ServletConfig;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import ars.util.Files;
import ars.util.Strings;
import ars.invoke.Channel;
import ars.invoke.request.Token;
import ars.invoke.request.Session;
import ars.invoke.request.Requester;
import ars.invoke.request.StandardRequester;

/**
 * 基于HTTP请求基础实现
 *
 * @author wuyongqiang
 */
public class StandardHttpRequester extends StandardRequester implements HttpRequester {
    private static final long serialVersionUID = 1L;

    private transient ServletConfig config;
    private transient HttpServletRequest request;
    private transient HttpServletResponse response;
    private transient Map renders;

    public StandardHttpRequester(Channel channel, ServletConfig config, HttpServletRequest request,
                                 HttpServletResponse response, Map renders, Requester parent, Locale locale, String client,
                                 String host, Token token, String uri, Map parameters) {
        super(channel, parent, locale, client, host, token, uri, parameters);
        if (config == null) {
            throw new IllegalArgumentException("ServletConfig must not be null");
        }
        if (request == null) {
            throw new IllegalArgumentException("HttpServletRequest must not be null");
        }
        if (response == null) {
            throw new IllegalArgumentException("HttpServletResponse must not be null");
        }
        if (renders == null) {
            throw new IllegalArgumentException("Renders must not be null");
        }
        this.config = config;
        this.request = request;
        this.response = response;
        this.renders = renders;
    }

    /**
     * 查找视图渲染器
     *
     * @param template 视图模板
     * @return 视图渲染器
     */
    protected Render loolupRender(String template) {
        if (!this.renders.isEmpty()) {
            for (Entry entry : this.renders.entrySet()) {
                if (Strings.matches(template, entry.getKey())) {
                    return entry.getValue();
                }
            }
        }
        return null;
    }

    /**
     * 获取视图渲染上下文
     *
     * @param content 渲染内容
     * @return 上下文键/值映射表
     */
    protected Map getRenderContext(Object content) {
        Date datetime = new Date();
        final Session session = this.getSession();
        Map context = new HashMap(15);
        context.put(Https.CONTEXT_URI, this.getUri());
        context.put(Https.CONTEXT_URL, Https.getUrl(this.request));
        context.put(Https.CONTEXT_HOST, this.getHost());
        context.put(Https.CONTEXT_PATH, this.request.getContextPath());
        context.put(Https.CONTEXT_PORT, this.request.getServerPort());
        context.put(Https.CONTEXT_TOKEN, this.getToken());
        context.put(Https.CONTEXT_SCHEME, this.request.getScheme());
        context.put(Https.CONTEXT_DOMAIN, this.request.getServerName());
        context.put(Https.CONTEXT_SERVER, Strings.LOCALHOST_ADDRESS);
        context.put(Https.CONTEXT_REQUEST, this.getParameters());
        context.put(Https.CONTEXT_SESSION, new Map() {

            @Override
            public int size() {
                return 0;
            }

            @Override
            public boolean isEmpty() {
                return false;
            }

            @Override
            public boolean containsKey(Object key) {
                return false;
            }

            @Override
            public boolean containsValue(Object value) {
                return false;
            }

            @Override
            public Object get(Object key) {
                return key == null ? null : session.getAttribute(Strings.toString(key));
            }

            @Override
            public Object put(String key, Object value) {
                return null;
            }

            @Override
            public Object remove(Object key) {
                return null;
            }

            @Override
            public void putAll(Map m) {

            }

            @Override
            public void clear() {

            }

            @Override
            public Set keySet() {
                return null;
            }

            @Override
            public Collection