json文本协议

json：对象－字符串－byte[] －传输－byte[]－字符串－对象

pb：对象－byte[]－传输byte[]－对象

另一个例子在：​​pb协议 jdk序列化协议​​，考虑到文章太长，放于此instead of the bottom

client：

String wholeUrl = String.format("%s?sdkappid=%d&random=%d", URL, SDKAPPID, rnd);          java.net.URL object = new URL(wholeUrl);         HttpURLConnection con = (HttpURLConnection) object.openConnection();         con.setDoOutput(true);         con.setDoInput(true);         con.setRequestProperty("Content-Type", "application/json");         con.setRequestProperty("Accept", "application/json");         con.setRequestMethod("POST");         JSONObject data = new JSONObject();         JSONObject tel = new JSONObject();         tel.put("nationcode", nationCode);         String phone = phoneNumber;         tel.put("phone", phone);         data.put("type", "0");         data.put("msg", content);         String sig = stringMD5(APPKEY.concat(phone));         data.put("sig", sig);         data.put("tel", tel);         OutputStreamWriter wr = new OutputStreamWriter(con.getOutputStream(), "utf-8");         wr.write(data.toString());         wr.flush();          // 显示 POST 请求返回的内容         StringBuilder sb = new StringBuilder();         int HttpResult = con.getResponseCode();         if (HttpResult == HttpURLConnection.HTTP_OK)         {             BufferedReader br = new BufferedReader(new InputStreamReader(con.getInputStream(), "utf-8"));             String line;             while ((line = br.readLine()) != null)             {                 sb.append(line + "\n");             }             br.close();             JSONObject reObj = new JSONObject(sb.toString());             String res = (String)reObj.get("result");             if(!"0".equals(res)) {                 System.out.println("" + sb.toString());                 LOGGER.error("SmsSender::sendMsg" + "-" + phoneNumber + ","+(String)reObj.get("errmsg"));             } else {              }           } else         {             LOGGER.error("send failed and rps is: " + con.getResponseMessage());             throw new SmsException("send failed and rps is: " + con.getResponseMessage());         }

请求：

JSONObject data = new JSONObject();

OutputStreamWriter wr = new OutputStreamWriter(con.getOutputStream(), "utf-8");

wr.write(data.toString());

应答：

BufferedReader br = new BufferedReader(new InputStreamReader(con.getInputStream(), "utf-8"));

String line;

while ((line = br.readLine()) != null)

{

sb.append(line + "\n");

}

br.close();

JSONObject reObj = new JSONObject(sb.toString());

String res = (String)reObj.get("result");

server：

基于netty的http server

响应请求，读取参数：

HttpServerHandler

@Override     protected void channelRead0(ChannelHandlerContext ctx, ByteBuf msg) throws Exception {          // 获取channel中的URI         Attribute<String> attr = ctx.channel().attr(AttributeMapConstant.NETTY_CHANNEL_KEY_HTTP_REQ_URI);         String uri = attr.get();          byte[] bs = new byte[msg.readableBytes()];         msg.readBytes(bs);         String json = new String(bs);

BaseReq baseReq = JSON.parseObject(json, BaseReq.class);

返回应答：

tws：

HttpServerHandler

public static void rspTws(RequestIdentity ri, BaseDto dto) {         String json = JSON.toJSONString(dto);          Channel channel = ri.getClientChannel();         if (channel != null && channel.isActive()) {             logger.info("3.返回http客户端:{}，流水号：{}", json, ri.getReqId());              channel.writeAndFlush(getJsonBuffer(json))

String json = JSON.toJSONString(dto);

/**      * JSON转ByteBuf      *      * @param json      * @return      */     private static ByteBuf getJsonBuffer(String json) {         ByteBuf buffer = Unpooled.buffer();         buffer.writeBytes(json.getBytes());         return buffer;     }

json.getBytes()

/**  * HTTP消息体编码器  * @author shane  *  */ public class HttpBodyEncoder extends MessageToMessageEncoder<ByteBuf> {   @Override  protected void encode(ChannelHandlerContext ctx, ByteBuf msg, List<Object> out) throws Exception {   out.add(HttpCreateor.buildFullHttpResponse(msg).retain());  }  }

public static FullHttpResponse buildFullHttpResponse(ByteBuf msg) {   // 返回信息   FullHttpResponse response = new DefaultFullHttpResponse(HttpVersion.HTTP_1_1, HttpResponseStatus.OK, msg);   response.headers().set(HttpHeaderNames.CONTENT_TYPE, String.format("%s;charset=UTF-8", HttpHeaderValues.TEXT_PLAIN));   response.headers().set(HttpHeaderNames.CONTENT_LENGTH, response.content().readableBytes());         // 返回         return response;  }

action：

public class BodyToResponseEncoder extends MessageToMessageEncoder<ResponseMessage> {      @Override     protected void encode(ChannelHandlerContext channelHandlerContext, ResponseMessage responseMessage, List<Object> list) throws Exception {          String json = JSON.toJSONString(responseMessage);          FullHttpResponse response = new DefaultFullHttpResponse(                 HttpVersion.HTTP_1_1,                 HttpResponseStatus.OK,                 Unpooled.wrappedBuffer(json.getBytes("utf-8")));         response.headers().set(HttpHeaders.Names.CONTENT_TYPE, "application/json;charset=UTF-8");         response.headers().set(HttpHeaders.Names.CONTENT_LENGTH, response.content().readableBytes());         response.headers().set(HttpHeaders.Names.CONNECTION, HttpHeaders.Values.KEEP_ALIVE);          // 下面2个支持跨域         response.headers().set(HttpHeaders.Names.ACCESS_CONTROL_ALLOW_ORIGIN, "*");         response.headers().set(HttpHeaders.Names.ACCESS_CONTROL_ALLOW_HEADERS, HttpHeaders.Names.CONTENT_TYPE);          list.add(response);     } }

String json = JSON.toJSONString(responseMessage);

json.getBytes("utf-8")