public static IMHttpResponse get(String url) {
IMHttpResponse response = new IMHttpResponse();
response.setStatusCode(404);
if (StringUtils.isEmpty(url)) {
return response;
}
int statusCode = 404;
CloseableHttpClient httpClient = null;
HttpGet httpGet = null;
try {
httpClient = HttpClients.createDefault();
httpGet = new HttpGet(url); // HTTP Get请求(POST雷同)
RequestConfig requestConfig =
RequestConfig.custom()
.setSocketTimeout(2000)
.setConnectTimeout(2000)
.build(); // 设置请求和传输超时时间
httpGet.setConfig(requestConfig);
CloseableHttpResponse hresp = httpClient.execute(httpGet); // 执行请求
String responseString = EntityUtils.toString(hresp.getEntity());
response.setStatusCode(hresp.getStatusLine().getStatusCode());
response.setResponseBody(responseString);
return response;
} catch (Exception e) {
logger.error("error code: " + statusCode, e);
} finally {
if (httpGet != null) {
httpGet.releaseConnection();
}
}
return response;
}
@SuppressWarnings({"rawtypes", "unchecked"})
public static IMHttpResponse post(String url, Map params) {
IMHttpResponse response = new IMHttpResponse();
if (StringUtils.isEmpty(url)) {
response.setStatusCode(404);
return response;
}
CloseableHttpClient httpClient = null;
HttpPost httpPost = null;
try {
httpPost = new HttpPost(url); // HTTP Get请求(POST雷同)
List<NameValuePair> postData = new ArrayList<NameValuePair>();
Iterator<Entry> piter = params.entrySet().iterator();
while (piter.hasNext()) {
Entry entry = piter.next();
postData.add(
new BasicNameValuePair(
String.valueOf(entry.getKey()), String.valueOf(entry.getValue())));
}
StringEntity entity = new StringEntity(URLEncodedUtils.format(postData, "UTF-8"));
httpPost.setEntity(entity);
RequestConfig requestConfig =
RequestConfig.custom()
.setSocketTimeout(2000)
.setConnectTimeout(2000)
.build(); // 设置请求和传输超时时间
httpPost.setConfig(requestConfig);
httpClient = HttpClients.createDefault();
CloseableHttpResponse hresp = httpClient.execute(httpPost); // 执行请求
String responseString = EntityUtils.toString(hresp.getEntity());
response.setStatusCode(hresp.getStatusLine().getStatusCode());
response.setResponseBody(responseString);
return response;
} catch (Exception e) {
logger.error("url: " + url, e);
} finally {
if (httpPost != null) {
httpPost.releaseConnection();
}
}
return response;
}
/** 解析数据包，主要负责解析数据包前8个字节统一格式的头部信息，生成Packet对象， 剩余的数据部分的解析在后面具体的action处理 */
@Override
protected Object decode(ChannelHandlerContext ctx, Channel channel, ChannelBuffer buffer)
throws Exception {
if (buffer.readableBytes() < SysConstants.PROTOCOL_HEADER_LENGTH) {
return null;
}
buffer.markReaderIndex(); // 标记一下
int length = buffer.readInt(); // 消息长度
char serviceId = buffer.readChar(); // 服务号, 后端这边固定1000
char commandId = buffer.readChar(); // 命令号
char version = buffer.readChar(); // 消息version, 1个字节
char reserved = buffer.readChar(); // 保留，可用户如序列号等
int contentLength = length - SysConstants.PROTOCOL_HEADER_LENGTH; // 计算数据包中业务数据部分的长度(去除头部长度16)
if (buffer.readableBytes() < contentLength) {
logger.info("数据长度：" + contentLength);
buffer.resetReaderIndex(); // 返回到上面标记的位置
return null;
}
ChannelBuffer cBuffer = ChannelBuffers.buffer(contentLength);
buffer.readBytes(cBuffer, contentLength); // 转移所有业务部分的数据到新的byte
Packet packet = new Packet();
packet.setLength(contentLength);
packet.setServiceId(serviceId);
packet.setCommandId(commandId);
packet.setVersion(version);
packet.setReserved(reserved);
DataBuffer dataBuffer = new DataBuffer(cBuffer); // 数据部分
packet.setContentBuffer(dataBuffer);
// logger.info("decode packet serviceId : " + packet.getServiceId()
// + " commandId: " + packet.getCommandId());
return packet;
}