先贴一下httClient端的代码，

 /*** HTTP的RequestBody方式请求*/public static String sendRequest(String url, String params, String encoding, int timeout) throws IOException {// 设置PostMethodPostMethod postMethod = new PostMethod(url);postMethod.getParams().setContentCharset(encoding);postMethod.getParams().setHttpElementCharset(encoding);//设置 LB签名String digest = SecurityUtil.getDigest(params);// 设置参数postMethod.setParameter("params", params);postMethod.setParameter("digest", digest);// http client 参数设置 连接超时 读取数据超时HttpClient httpClient = new HttpClient();httpClient.getHttpConnectionManager().getParams().setConnectionTimeout(timeout);httpClient.getHttpConnectionManager().getParams().setSoTimeout(timeout);try {httpClient.executeMethod(postMethod);if (postMethod.getStatusCode() == HttpStatus.SC_OK) {return postMethod.getResponseBodyAsString();}return ParameterUtil.SERVER_ERROR;} finally {postMethod.releaseConnection();}}

上面的四个参数分别是对方接口的URL,传递的参数，传递的字符编码格式，接口响应时间。

其中的digest是个加密处理，不要在乎这些细节。

然后让我们写一下接收：

 public void newOrder(HttpServletRequest request,HttpServletResponse response){response.setContentType("application/json;charset=UTF-8");logger.error(">>>=====客户调用订单下发接口开始");String result=null;String orderNo="";//用于推送异常时日志记录// 获取入参BufferedReader reader = null;String parameters;if (request instanceof DefaultMultipartHttpServletRequest) {//对接入的php类http请求进行验证DefaultMultipartHttpServletRequest defaultMultipartHttpServletRequest = (DefaultMultipartHttpServletRequest) request;Map requestMap = defaultMultipartHttpServletRequest.getParameterMap();parameters = testRequest(requestMap);} else {//对接入的java类http请求进行验证try {reader = request.getReader();} catch (IOException e) {e.printStackTrace();}parameters = testRequest(reader);}return parameters;

这里要注意的是，java和php对传过来的request封装是不一样的，我上截图

java对request的封装

于是对应的取参代码：

 public String testRequest(BufferedReader reader) {String str = "";String parameters = "";try {while ((str = reader.readLine()) != null) {parameters += str;}} catch (IOException e) {e.printStackTrace();}RequestParameterEntity req = JSONObject.parseObject(parameters,RequestParameterEntity.class);// 时间戳String timestamp = req.getTimestamp();// 获取客户资料Map<String, Object> map = new HashMap<String, Object>();map.put("code", req.getCode());CustomerEntity queryCustomer = customerService.queryCustomer(map);String secretKey = null;if (queryCustomer != null) {secretKey = queryCustomer.getSecretKey();// 验证用户是否禁用状态if (Integer.valueOf(queryCustomer.getStatus()) > 0) {parameters = ParameterUtil.STATUS_ILLEGAL;return parameters;}// ip验证
//            String serverIp = queryCustomer.getServerIp();
//            String loginIp = request.getRemoteAddr();// 如果有设置客户IP则验证，否则不验证！
//            if (serverIp != null && !"".equals(serverIp)) {
//                String[] ip = serverIp.split(",");
//                boolean allowed = false;
//                for (String strIp : ip) {
//                    if (strIp == loginIp || strIp.equals(loginIp)) {
//                        allowed = true;
//                    }
//                }
//                if (!allowed) {
//                    parameters = ParameterUtil.LOGIN_IP_FAILURE;
//                    return parameters;
//                }
//            }} else {// 用户不存在parameters = ParameterUtil.CODE_ILLEGAL;return parameters;}// 验证签名Boolean rights = ParameterUtil.checkRights(req, secretKey);if (!rights) {parameters = ParameterUtil.DIGEST_FAILURE;return parameters;}// 验证时间戳// 时间戳验证使用，判断请求是否在有效的时间戳范围内，时间戳范围根据情况自行定义long sendTime = Long.parseLong(timestamp);long now = System.currentTimeMillis();long effectiveTimestamp = 1800000;if (Math.abs(now - sendTime) > effectiveTimestamp) {// 时间戳验证parameters = ParameterUtil.TIMESTAMP_FAILURE;}return parameters;}

php对request的封装

其中取自map是这样的：

据我估计DefaultMultipartHttpServletRequest应该是HttpServletRequest的子类，顾可以通过传过来的request来判断对方是java还是php，至于PHP是这么写的，我就不是很懂了，但是有对方的一个截图：

对应的php取参代码：

 public String testRequest(Map requestMap) {String[] requestParams = (String[]) requestMap.get("params");String parameters = "";String[] timestamp = (String[]) requestMap.get("timestamp");Map<String, Object> map = new HashMap<String, Object>();String[] code = (String[]) requestMap.get("code");map.put("code", code[0]);CustomerEntity queryCustomer = customerService.queryCustomer(map);String secretKey = null;if (queryCustomer != null) {secretKey = queryCustomer.getSecretKey();// 验证用户是否禁用状态if (Integer.valueOf(queryCustomer.getStatus()) > 0) {parameters = ParameterUtil.STATUS_ILLEGAL;return parameters;}} else {// 用户不存在parameters = ParameterUtil.CODE_ILLEGAL;return parameters;}// 验证签名String[] digest = (String[])requestMap.get("digest");String[] params = (String[]) requestMap.get("params");String digest2 = SecurityUtil.getDigest(params[0], code[0], secretKey);boolean flag = digest[0].equals(digest2);if (!flag) {parameters = ParameterUtil.DIGEST_FAILURE;return parameters;}// 验证时间戳// 时间戳验证使用，判断请求是否在有效的时间戳范围内，时间戳范围根据情况自行定义long sendTime = Long.parseLong(timestamp[0]);long now = System.currentTimeMillis();long effectiveTimestamp = 1800000;if (Math.abs(now - sendTime) > effectiveTimestamp) {// 时间戳验证parameters = ParameterUtil.TIMESTAMP_FAILURE;return parameters;}JSONObject jsonObject = new JSONObject() ;jsonObject.put("code",code[0]);jsonObject.put("digest",digest[0]);jsonObject.put("timestamp",timestamp[0]);jsonObject.put("params",params[0]);parameters += jsonObject.toString().trim();return parameters;}

还差最后一点回执问题，将要返回的东西放入result里，通过PrintWriter来输出。

PrintWriter pw=null;try {pw=response.getWriter();pw.println(result);pw.flush();} catch (IOException e) {logger.error("插入记录过程中回写失败！");}finally{pw.close();}