me.chanjar.weixin.mp.api.WxMpMessageRouter Maven / Gradle / Ivy
package me.chanjar.weixin.mp.api;
import me.chanjar.weixin.common.api.WxConsts;
import me.chanjar.weixin.common.session.*;
import me.chanjar.weixin.common.util.WxMessageDuplicateChecker;
import me.chanjar.weixin.common.util.WxMessageInMemoryDuplicateChecker;
import me.chanjar.weixin.mp.bean.WxMpXmlMessage;
import me.chanjar.weixin.mp.bean.WxMpXmlOutMessage;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.Future;
import java.util.regex.Pattern;
/**
*
* 微信消息路由器，通过代码化的配置，把来自微信的消息交给handler处理
*
* 说明：
* 1. 配置路由规则时要按照从细到粗的原则，否则可能消息可能会被提前处理
* 2. 默认情况下消息只会被处理一次，除非使用 {@link Rule#next()}
* 3. 规则的结束必须用{@link Rule#end()}或者{@link Rule#next()}，否则不会生效
*
* 使用方法：
* WxMpMessageRouter router = new WxMpMessageRouter();
* router
* .rule()
* .msgType("MSG_TYPE").event("EVENT").eventKey("EVENT_KEY").content("CONTENT")
* .interceptor(interceptor, ...).handler(handler, ...)
* .end()
* .rule()
* // 另外一个匹配规则
* .end()
* ;
*
* // 将WxXmlMessage交给消息路由器
* router.route(message);
*
*
*/
public class WxMpMessageRouter {
protected final Logger log = LoggerFactory.getLogger(WxMpMessageRouter.class);
private static final int DEFAULT_THREAD_POOL_SIZE = 100;
private final List rules = new ArrayList();
private final WxMpService wxMpService;
private ExecutorService executorService;
private WxMessageDuplicateChecker messageDuplicateChecker;
private WxSessionManager sessionManager;
public WxMpMessageRouter(WxMpService wxMpService) {
this.wxMpService = wxMpService;
this.executorService = Executors.newFixedThreadPool(DEFAULT_THREAD_POOL_SIZE);
this.messageDuplicateChecker = new WxMessageInMemoryDuplicateChecker();
this.sessionManager = new StandardSessionManager();
}
/**
*
* 设置自定义的 {@link ExecutorService}
* 如果不调用该方法，默认使用 Executors.newFixedThreadPool(100)
*
* @param executorService
*/
public void setExecutorService(ExecutorService executorService) {
this.executorService = executorService;
}
/**
*
* 设置自定义的 {@link me.chanjar.weixin.common.util.WxMessageDuplicateChecker}
* 如果不调用该方法，默认使用 {@link me.chanjar.weixin.common.util.WxMessageInMemoryDuplicateChecker}
*
* @param messageDuplicateChecker
*/
public void setMessageDuplicateChecker(WxMessageDuplicateChecker messageDuplicateChecker) {
this.messageDuplicateChecker = messageDuplicateChecker;
}
/**
*
* 设置自定义的{@link me.chanjar.weixin.common.session.WxSessionManager}
* 如果不调用该方法，默认使用 {@linke SessionManagerImpl}
*
* @param sessionManager
*/
public void setSessionManager(WxSessionManager sessionManager) {
this.sessionManager = sessionManager;
}
/**
* 开始一个新的Route规则
* @return
*/
public Rule rule() {
return new Rule(this, wxMpService, sessionManager);
}
/**
* 处理微信消息
* @param wxMessage
*/
public WxMpXmlOutMessage route(final WxMpXmlMessage wxMessage) {
if (isDuplicateMessage(wxMessage)) {
// 如果是重复消息，那么就不做处理
return null;
}
final List matchRules = new ArrayList();
// 收集匹配的规则
for (final Rule rule : rules) {
if (rule.test(wxMessage)) {
matchRules.add(rule);
if(!rule.reEnter) {
break;
}
}
}
if (matchRules.size() == 0) {
return null;
}
WxMpXmlOutMessage res = null;
final List futures = new ArrayList();
for (final Rule rule : matchRules) {
// 返回最后一个非异步的rule的执行结果
if(rule.async) {
futures.add(
executorService.submit(new Runnable() {
public void run() {
rule.service(wxMessage);
}
})
);
} else {
res = rule.service(wxMessage);
// 在同步操作结束，session访问结束
log.debug("End session access: async=false, sessionId={}", wxMessage.getFromUserName());
sessionEndAccess(wxMessage);
}
}
if (futures.size() > 0) {
executorService.submit(new Runnable() {
@Override
public void run() {
for (Future future : futures) {
try {
future.get();
log.debug("End session access: async=true, sessionId={}", wxMessage.getFromUserName());
// 异步操作结束，session访问结束
sessionEndAccess(wxMessage);
} catch (InterruptedException e) {
log.error("Error happened when wait task finish", e);
} catch (ExecutionException e) {
log.error("Error happened when wait task finish", e);
}
}
}
});
}
return res;
}
protected boolean isDuplicateMessage(WxMpXmlMessage wxMessage) {
String messageId = "";
if (wxMessage.getMsgId() == null) {
messageId = wxMessage.getFromUserName() + "-" + String.valueOf(wxMessage.getCreateTime());
} else {
messageId = String.valueOf(wxMessage.getMsgId());
}
if (messageDuplicateChecker.isDuplicate(messageId)) {
return true;
}
return false;
}
/**
* 对session的访问结束
* @param wxMessage
*/
protected void sessionEndAccess(WxMpXmlMessage wxMessage) {
InternalSession session = ((InternalSessionManager)sessionManager).findSession(wxMessage.getFromUserName());
if (session != null) {
session.endAccess();
}
}
public static class Rule {
private final WxMpMessageRouter routerBuilder;
private final WxMpService wxMpService;
private final WxSessionManager sessionManager;
private boolean async = true;
private String fromUser;
private String msgType;
private String event;
private String eventKey;
private String content;
private String rContent;
private boolean reEnter = false;
private List handlers = new ArrayList();
private List interceptors = new ArrayList();
protected Rule(WxMpMessageRouter routerBuilder, WxMpService wxMpService, WxSessionManager sessionManager) {
this.routerBuilder = routerBuilder;
this.wxMpService = wxMpService;
this.sessionManager = sessionManager;
}
/**
* 设置是否异步执行，默认是true
* @param async
* @return
*/
public Rule async(boolean async) {
this.async = async;
return this;
}
/**
* 如果msgType等于某值
* @param msgType
* @return
*/
public Rule msgType(String msgType) {
this.msgType = msgType;
return this;
}
/**
* 如果event等于某值
* @param event
* @return
*/
public Rule event(String event) {
this.event = event;
return this;
}
/**
* 如果eventKey等于某值
* @param eventKey
* @return
*/
public Rule eventKey(String eventKey) {
this.eventKey = eventKey;
return this;
}
/**
* 如果content等于某值
* @param content
* @return
*/
public Rule content(String content) {
this.content = content;
return this;
}
/**
* 如果content匹配该正则表达式
* @param regex
* @return
*/
public Rule rContent(String regex) {
this.rContent = regex;
return this;
}
/**
* 如果fromUser等于某值
* @param fromUser
* @return
*/
public Rule fromUser(String fromUser) {
this.fromUser = fromUser;
return this;
}
/**
* 设置微信消息拦截器
* @param interceptor
* @return
*/
public Rule interceptor(WxMpMessageInterceptor interceptor) {
return interceptor(interceptor, (WxMpMessageInterceptor[]) null);
}
/**
* 设置微信消息拦截器
* @param interceptor
* @param otherInterceptors
* @return
*/
public Rule interceptor(WxMpMessageInterceptor interceptor, WxMpMessageInterceptor... otherInterceptors) {
this.interceptors.add(interceptor);
if (otherInterceptors != null && otherInterceptors.length > 0) {
for (WxMpMessageInterceptor i : otherInterceptors) {
this.interceptors.add(i);
}
}
return this;
}
/**
* 设置微信消息处理器
* @param handler
* @return
*/
public Rule handler(WxMpMessageHandler handler) {
return handler(handler, (WxMpMessageHandler[]) null);
}
/**
* 设置微信消息处理器
* @param handler
* @param otherHandlers
* @return
*/
public Rule handler(WxMpMessageHandler handler, WxMpMessageHandler... otherHandlers) {
this.handlers.add(handler);
if (otherHandlers != null && otherHandlers.length > 0) {
for (WxMpMessageHandler i : otherHandlers) {
this.handlers.add(i);
}
}
return this;
}
/**
* 规则结束，代表如果一个消息匹配该规则，那么它将不再会进入其他规则
* @return
*/
public WxMpMessageRouter end() {
this.routerBuilder.rules.add(this);
return this.routerBuilder;
}
/**
* 规则结束，但是消息还会进入其他规则
* @return
*/
public WxMpMessageRouter next() {
this.reEnter = true;
return end();
}
protected boolean test(WxMpXmlMessage wxMessage) {
return
(this.fromUser == null || this.fromUser.equals(wxMessage.getFromUserName()))
&&
(this.msgType == null || this.msgType.equals(wxMessage.getMsgType()))
&&
(this.event == null || this.event.equals(wxMessage.getEvent()))
&&
(this.eventKey == null || this.eventKey.equals(wxMessage.getEventKey()))
&&
(this.content == null || this.content.equals(wxMessage.getContent() == null ? null : wxMessage.getContent().trim()))
&&
(this.rContent == null || Pattern.matches(this.rContent, wxMessage.getContent() == null ? "" : wxMessage.getContent().trim()))
;
}
/**
* 处理微信推送过来的消息
* @param wxMessage
* @return true 代表继续执行别的router，false 代表停止执行别的router
*/
protected WxMpXmlOutMessage service(WxMpXmlMessage wxMessage) {
Map context = new HashMap();
// 如果拦截器不通过
for (WxMpMessageInterceptor interceptor : this.interceptors) {
if (!interceptor.intercept(wxMessage, context, wxMpService, sessionManager)) {
return null;
}
}
// 交给handler处理
WxMpXmlOutMessage res = null;
for (WxMpMessageHandler handler : this.handlers) {
// 返回最后handler的结果
res = handler.handle(wxMessage, context, wxMpService, sessionManager);
}
return res;
}
}
}
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