springmvc 整合微信

方式一：

 ①  配置验证

   @RequestMapping(value = "/into", method = RequestMethod.GET, produces = "application/json;charset=UTF-8")

    public void validate(WeChat wc, PrintWriter out) {

        String signature = wc.getSignature(); // 微信加密签名

        String timestamp = wc.getTimestamp(); // 时间戳

        String nonce = wc.getNonce();// 随机数

        String echostr = wc.getEchostr();// 随机字符串

        System.out.println("加密的签名字符串:" + signature);

        System.out.println("时间戳:" + timestamp);

        System.out.println("随机数:" + nonce);

        System.out.println("随机字符串:" + echostr); // 验证请求确认成功原样返回echostr参数内容，则接入生效，成为开发者成功，否则接入失败

        if (ValidationUtil.checkSignauer(signature, timestamp, nonce)) {

            // 随机字符串

            System.out.println("我进来了");

            out.print(echostr);

        } else {

            System.out.println("不是微信服务器发来的请求,请小心!");

        }

        out.flush();

        out.close();

    }

② 数据处理

    @RequestMapping(value = "/into", method = RequestMethod.POST, produces = "application/xml;charset=UTF-8")

    public void dispose(HttpServletRequest req, HttpServletResponse resp)

            throws IOException {

        // 调用核心业务类接收消息、处理消息

        // 从请求中读取整个post数据

        // 将请求、响应的编码均设置为UTF-8（防止中文乱码）

        req.setCharacterEncoding("UTF-8");

        resp.setCharacterEncoding("UTF-8");

        PrintWriter out = resp.getWriter();

        InputStream inputStream = req.getInputStream();

        String datapacket = IOUtils.toString(inputStream, "UTF-8");

        String respMessage = CoreService.processRequest(datapacket);

        log.info(respMessage);

        // 响应消息

        out.print(respMessage);

        out.close();

    }

方式二：

@RequestMapping(value = "/into", method = RequestMethod.GET, produces = "text/html;charset=UTF-8")

    @ResponseBody

    public String validate(WeChat wc) {

        String signature = wc.getSignature(); // 微信加密签名

        String timestamp = wc.getTimestamp(); // 时间戳

        String nonce = wc.getNonce();// 随机数

        String echostr = wc.getEchostr();// 随机字符串

        System.out.println("加密的签名字符串:" + signature);

        System.out.println("时间戳:" + timestamp);

        System.out.println("随机数:" + nonce);

        System.out.println("随机字符串:" + echostr); // 验证请求确认成功原样返回echostr参数内容，则接入生效，成为开发者成功，否则接入失败

        if (ValidationUtil.checkSignauer(signature, timestamp, nonce)) {

            // 随机字符串

            System.out.println("我进来了");

            return echostr;

        } else {

            System.out.println("不是微信服务器发来的请求,请小心!");

            return "error";

        }

    }

    @RequestMapping(value = "/into", method = RequestMethod.POST, produces = "application/xml;charset=UTF-8")

    public void dispose(HttpServletRequest req, WeChat wc,

            HttpServletResponse resp) throws IOException {

        String signature = wc.getSignature(); // 微信加密签名

        String timestamp = wc.getTimestamp(); // 时间戳

        String nonce = wc.getNonce();// 随机数

        String echostr = wc.getEchostr();// 随机字符串

        System.out.println("加密的签名字符串:" + signature);

        System.out.println("时间戳:" + timestamp);

        System.out.println("随机数:" + nonce);

        System.out.println("随机字符串:" + echostr); // 验证请求确认成功原样返回echostr参数内容，则接入生效，成为开发者成功，否则接入失败

        resp.setCharacterEncoding("UTF-8");

        PrintWriter out = resp.getWriter();

        if (ValidationUtil.checkSignauer(signature, timestamp, nonce)) {

            // 调用核心业务类接收消息、处理消息

            // 从请求中读取整个post数据

            InputStream inputStream = req.getInputStream();

            String datapacket = IOUtils.toString(inputStream, "UTF-8");

            String respMessage = CoreService.processRequest(datapacket);

            log.info(respMessage);

            // 响应消息

            out.print(respMessage);

        }

        out.flush();

        out.close();

    }

方式三：（推荐使用）

@RequestMapping(value = "/into", method = RequestMethod.GET, produces = "text/html;charset=UTF-8")

    @ResponseBody

    public String validate(WeChat wc) {

        String signature = wc.getSignature(); // 微信加密签名

        String timestamp = wc.getTimestamp(); // 时间戳

        String nonce = wc.getNonce();// 随机数

        String echostr = wc.getEchostr();// 随机字符串

        if (ValidationUtil.checkSignauer(signature, timestamp, nonce)) {

            // 随机字符串

            log.info("我进来了");

            return echostr;

        } else {

            log.error("不是微信服务器发来的请求,请小心!");

            return "error";

        }

    }

    @RequestMapping(value = "/into", method = RequestMethod.POST, produces = "application/xml;charset=UTF-8")

    @ResponseBody

    public String dispose(HttpServletRequest req, WeChat wc) throws IOException {

        String signature = wc.getSignature(); // 微信加密签名

        String timestamp = wc.getTimestamp(); // 时间戳

        String nonce = wc.getNonce();// 随机数

        if (ValidationUtil.checkSignauer(signature, timestamp, nonce)) {

            // 调用核心业务类接收消息、处理消息

            // 从请求中读取整个post数据

            InputStream inputStream = req.getInputStream();

            String datapacket = IOUtils.toString(inputStream, "UTF-8");

            String respMessage = CoreService.processRequest(datapacket);

            log.info(respMessage);

            // 响应消息

            return respMessage;

        }else{

            log.error("数据处理失败!");

            return "error";

        }

    }