org.weixin4j.spring.web.WeixinJieruController Maven / Gradle / Ivy

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一个让Weixin4j可以在Spring中集成的框架。
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/*
 * 微信公众平台(JAVA) SDK
 *
 * Copyright (c) 2014, Ansitech Network Technology Co.,Ltd All rights reserved.
 * 
 * http://www.weixin4j.org/spring/
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.weixin4j.spring.web;

import java.io.IOException;
import javax.servlet.ServletInputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.weixin4j.WeixinException;
import org.weixin4j.spi.IMessageHandler;
import org.weixin4j.util.TokenUtil;

/**
 * 微信开发者接入控制器
 *
 * @author yangqisheng
 */
public class WeixinJieruController {

    @Autowired
    private IMessageHandler messageHandler;

    //开发者接入验证
    @RequestMapping(method = RequestMethod.GET)
    public void get(HttpServletRequest request, HttpServletResponse response) throws IOException {
        //消息来源可靠性验证
        String signature = request.getParameter("signature");// 微信加密签名
        String timestamp = request.getParameter("timestamp");// 时间戳
        String nonce = request.getParameter("nonce");       // 随机数
        //Token为weixin4j.properties中配置的Token
        String token = TokenUtil.get();
        //1.验证消息真实性
        //http://mp.weixin.qq.com/wiki/index.php?title=验证消息真实性
        //成为开发者验证
        String echostr = request.getParameter("echostr");
        //确认此次GET请求来自微信服务器，原样返回echostr参数内容，则接入生效，成为开发者成功，否则接入失败
        if (TokenUtil.checkSignature(token, signature, timestamp, nonce)) {
            response.getWriter().write(echostr);
        }
    }

    //接收微信消息
    @RequestMapping(method = RequestMethod.POST)
    public void post(HttpServletRequest request, HttpServletResponse response) throws IOException {
        //消息来源可靠性验证
        String signature = request.getParameter("signature");// 微信加密签名
        String timestamp = request.getParameter("timestamp");// 时间戳
        String nonce = request.getParameter("nonce");       // 随机数
        //Token为weixin4j.properties中配置的Token
        String token = TokenUtil.get();
        //确认此次GET请求来自微信服务器，原样返回echostr参数内容，则接入生效，成为开发者成功，否则接入失败
        if (!TokenUtil.checkSignature(token, signature, timestamp, nonce)) {
            //消息不可靠，直接返回
            response.getWriter().write("");
            return;
        }
        //用户每次向公众号发送消息、或者产生自定义菜单点击事件时，响应URL将得到推送
        try {
            response.setCharacterEncoding("UTF-8");
            response.setContentType("text/xml");
            //获取POST流
            ServletInputStream in = request.getInputStream();
            //处理输入消息，返回结果
            String xml = messageHandler.invoke(in);
            //返回结果
            response.getWriter().write(xml);
        } catch (IOException e) {
            response.getWriter().write("");
        } catch (WeixinException ex) {
            response.getWriter().write("");
        }
    }
}