【Java教程】Netty如何设置为Https访问详解
所需工具：
Java
聪明的大脑
勤劳的双手
注意：本站只提供教程，不提供任何成品+工具+软件链接，仅限用于学习和研究，禁止商业用途，未经允许禁止转载/分享等
教程如下
Netty设置为Https访问
SSLContextFactory
public class SSLContextFactory {
public static SSLContext getSslContext() throws Exception {
char[] passArray = "zhuofansoft".toCharArray();
SSLContext sslContext = SSLContext.getInstance("TLSv1.2");
KeyStore ks = KeyStore.getInstance("JKS");
//鍔犺浇keytool 鐢熸垚鐨勬枃浠
FileInputStream inputStream = new FileInputStream("D://server.keystore");
ks.load(inputStream, passArray);
KeyManagerFactory kmf = KeyManagerFactory.getInstance(KeyManagerFactory.getDefaultAlgorithm());
kmf.init(ks, passArray);
sslContext.init(kmf.getKeyManagers(), null, null);
inputStream.close();
return sslContext;
}
}
处理类
public class HttpsSeverHandler extends ChannelInboundHandlerAdapter {
private static final Logger LOGGER = LoggerFactory.getLogger(HttpServerHandler.class);
@Override
public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
if (msg instanceof HttpRequest) {
HttpRequest request = (HttpRequest) msg;
LOGGER.info("access messageReceived invoke success..");
Long startTime = System.currentTimeMillis();
// 400
if (!request.decoderResult().isSuccess()) {
sendError(ctx, HttpResponseStatus.BAD_REQUEST);
return;
}
// 405
if (request.method() != GET) {
sendError(ctx, HttpResponseStatus.METHOD_NOT_ALLOWED);
return;
}
FullHttpResponse response = new DefaultFullHttpResponse(HTTP_1_1, HttpResponseStatus.OK);
Map<String, String> parmMap = new RequestParser((FullHttpRequest) request).parse();
//jquery跨域携带标识符
String callback = parmMap.get("callback");
LOGGER.info("connection jsonp header:[{}],request param:[{}]",callback,parmMap.get("requestParam"));;
//请求参数
DeviceRequest deviceRequest = JSONObject.parseObject(parmMap.get("requestParam"), DeviceRequest.class);
DeviceResultWapper< > result = getClientResponse(deviceRequest);
LOGGER.info("get client response success.. response:[{}]",JSONObject.toJSONString(result));
LOGGER.info("get client response take time:[{}]",(System.currentTimeMillis()-startTime)/1000+"s");
String content = callback + "("+JSONObject.toJSONString(result)+")";
byte[] bs = content.getBytes("UTF-8");
response.headers().set(CONTENT_TYPE, "text/html; charset=UTF-8");
response.headers().set(HttpHeaderNames.CONTENT_LENGTH, String.valueOf(bs.length));
response.content().writeBytes(ByteBuffer.wrap(bs));
ctx.writeAndFlush(response).addListener(ChannelFutureListener.CLOSE);
/* HttpRequest request = (HttpRequest) msg;
boolean keepaLive = HttpUtil.isKeepAlive(request);
System.out.println("method" + request.method());
System.out.println("uri" + request.uri());
FullHttpResponse httpResponse = new DefaultFullHttpResponse(HttpVersion.HTTP_1_1, HttpResponseStatus.OK);
httpResponse.content().writeBytes("https".getBytes());
httpResponse.headers().set(HttpHeaderNames.CONTENT_TYPE, "text/html;charset=UTF-8");
httpResponse.headers().setInt(HttpHeaderNames.CONTENT_LENGTH, httpResponse.content().readableBytes());
if (keepaLive) {
httpResponse.headers().set(HttpHeaderNames.CONNECTION, HttpHeaderValues.KEEP_ALIVE);
ctx.writeAndFlush(httpResponse);
} else {
ctx.writeAndFlush(httpResponse).addListener(ChannelFutureListener.CLOSE);
}*/
}
}
@Override
public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
cause.printStackTrace();
if (ctx.channel().isActive()) {
sendError(ctx, HttpResponseStatus.INTERNAL_SERVER_ERROR);
}
}
private static void sendError(ChannelHandlerContext ctx, HttpResponseStatus status) {
FullHttpResponse response = new DefaultFullHttpResponse(HTTP_1_1, status,
Unpooled.copiedBuffer("Failure: " + status.toString() + "\r\n", CharsetUtil.UTF_8));
response.headers().set(CONTENT_TYPE, "text/plain; charset=UTF-8");
ctx.writeAndFlush(response).addListener(ChannelFutureListener.CLOSE);
}
/* @Override
protected void messageReceived(ChannelHandlerContext ctx, FullHttpRequest request) throws Exception {
LOGGER.info("access messageReceived invoke success..");
Long startTime = System.currentTimeMillis();
// 400
if (!request.decoderResult().isSuccess()) {
sendError(ctx, HttpResponseStatus.BAD_REQUEST);
return;
}
// 405
if (request.method() != GET) {
sendError(ctx, HttpResponseStatus.METHOD_NOT_ALLOWED);
return;
}
FullHttpResponse response = new DefaultFullHttpResponse(HTTP_1_1, HttpResponseStatus.OK);
Map<String, String> parmMap = new RequestParser(request).parse();
//jQuery跨域携带标识符
String callback = parmMap.get("callback");
LOGGER.info("connection jsonp header:[{}],request param:[{}]",callback,parmMap.get("requestParam"));;
//请求参数
DeviceRequest deviceRequest = JSONObject.parseObject(parmMap.get("requestParam"), DeviceRequest.class);
DeviceResultWapper< > result = getClientResponse(deviceRequest);
LOGGER.info("get client response success.. response:[{}]",JSONObject.toJSONString(result));
LOGGER.info("get client response take time:[{}]",(System.currentTimeMillis()-startTime)/1000+"s");
String content = callback + "("+JSONObject.toJSONString(result)+")";
byte[] bs = content.getBytes("UTF-8");
response.headers().set(CONTENT_TYPE, "text/html; charset=UTF-8");
response.headers().set(HttpHeaderNames.CONTENT_LENGTH, String.valueOf(bs.length));
response.content().writeBytes(ByteBuffer.wrap(bs));
ctx.writeAndFlush(response).addListener(ChannelFutureListener.CLOSE);
}
*/
private DeviceResultWapper< > getClientResponse(DeviceRequest deviceRequest) {
// 拼接参数
DeviceCommandVo deviceCommandVo = DeviceType.wapperRequestParam(deviceRequest);
if (deviceCommandVo == null) {
return DeviceResultWapper.fail(400, "remote user with illegal param");
}
SerialPortOrder serialPortOrder = DeviceOrderFactory.produce(deviceCommandVo.getDeviceTypeId());
return serialPortOrder.order(deviceCommandVo);
}
}
Netty实现Http协议
这里简单介绍下，项目中使用netty在main方法中启动项目，实现http协议。
maven依赖的包
<dependency> <groupId>io.netty</groupId> <artifactId>netty-all</artifactId> <version>4.1.27.Final</version> </dependency>
1.netty启动入口
package com.fotile.cloud.ruleengin;
import javax.servlet.ServletException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import org.springframework.mock.web.MockServletConfig;
import org.springframework.web.context.support.XmlWebApplicationContext;
import org.springframework.web.servlet.DispatcherServlet;
import com.fotile.cloud.ruleengin.falsework.NettyHttpServer;
/**
* Hello world!
*
*/
public class RuleApplication
{
// 引擎端口
private final static int ENGINE_PORT = 8086;
/**
* http prot is 8085,
*/
public static void main(String[] args)
{
// 加载spring配置
ApplicationContext ctx = new ClassPathXmlApplicationContext("spring-config.xml");
DispatcherServlet servlet = getDispatcherServlet(ctx);
NettyHttpServer server = new NettyHttpServer(ENGINE_PORT, servlet);
server.start();
}
public static DispatcherServlet getDispatcherServlet(ApplicationContext ctx)
{
XmlWebApplicationContext mvcContext = new XmlWebApplicationContext();
// 加载spring-mvc配置
mvcContext.setConfigLocation("classpath:spring-mvc.xml");
mvcContext.setParent(ctx);
MockServletConfig servletConfig = new MockServletConfig(mvcContext.getServletContext(), "dispatcherServlet");
DispatcherServlet dispatcherServlet = new DispatcherServlet(mvcContext);
try
{
dispatcherServlet.init(servletConfig);
} catch (ServletException e)
{
e.printStackTrace();
}
return dispatcherServlet;
}
}
2.编写NettyHttpServer
package com.fotile.cloud.openplatform.falsework;
import org.apache.log4j.Logger;
import org.springframework.web.servlet.DispatcherServlet;
import io.netty.bootstrap.ServerBootstrap;
import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelOption;
import io.netty.channel.EventLoopGroup;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.nio.NioServerSocketChannel;
public class NettyHttpServer implements Runnable
{
private Logger LOGGER = Logger.getLogger(this.getClass());
private int port;
private DispatcherServlet servlet;
public NettyHttpServer(Integer port)
{
this.port = port;
}
public NettyHttpServer(Integer port, DispatcherServlet servlet)
{
this.port = port;
this.servlet = servlet;
}
public void start()
{
EventLoopGroup bossGroup = new NioEventLoopGroup();
EventLoopGroup workerGroup = new NioEventLoopGroup();
try
{
ServerBootstrap b = new ServerBootstrap();
b.group(bossGroup, workerGroup).channel(NioServerSocketChannel.class)
.childHandler(new HttpServerInitializer(servlet)).option(ChannelOption.SO_BACKLOG, 128)
.childOption(ChannelOption.SO_KEEPALIVE, true);
LOGGER.info("NettyHttpServer Run successfully");
// 绑定端口，开始接收进来的连接
ChannelFuture f = b.bind(port).sync();
// 等待服务器 socket 关闭 。在这个例子中，这不会发生，但你可以优雅地关闭你的服务器。
f.channel().closeFuture().sync();
} catch (Exception e)
{
System.out.println("NettySever start fail" + e);
} finally
{
workerGroup.shutdownGracefully();
bossGroup.shutdownGracefully();
}
}
@Override
public void run()
{
start();
}
}
3.处理http请求、处理、返回
package com.fotile.cloud.ruleengin.falsework;
import java.net.URLDecoder;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import io.netty.buffer.ByteBuf;
import io.netty.buffer.Unpooled;
import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelFutureListener;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.SimpleChannelInboundHandler;
import io.netty.handler.codec.http.*;
import io.netty.handler.codec.http.multipart.DefaultHttpDataFactory;
import io.netty.handler.codec.http.multipart.HttpPostRequestDecoder;
import io.netty.handler.codec.http.multipart.InterfaceHttpData;
import io.netty.handler.codec.http.multipart.InterfaceHttpData.HttpDataType;
import io.netty.handler.codec.http.multipart.MemoryAttribute;
import io.netty.util.CharsetUtil;
import org.apache.commons.lang3.StringUtils;
import org.springframework.mock.web.MockHttpServletRequest;
import org.springframework.mock.web.MockHttpServletResponse;
import org.springframework.web.servlet.DispatcherServlet;
import org.springframework.web.util.UriComponents;
import org.springframework.web.util.UriComponentsBuilder;
import org.springframework.web.util.UriUtils;
public class HttpRequestHandler extends SimpleChannelInboundHandler<FullHttpRequest>
{
private DispatcherServlet servlet;
public HttpRequestHandler(DispatcherServlet servlet)
{
this.servlet = servlet;
}
@Override
protected void channelRead0(ChannelHandlerContext ctx, FullHttpRequest fullHttpRequest) throws Exception
{
boolean flag = HttpMethod.POST.equals(fullHttpRequest.method())
|| HttpMethod.GET.equals(fullHttpRequest.method()) || HttpMethod.DELETE.equals(fullHttpRequest.method())
|| HttpMethod.PUT.equals(fullHttpRequest.method());
Map<String, String> parammap = getRequestParams(ctx, fullHttpRequest);
if (flag & & ctx.channel().isActive())
{
// HTTP请求、GET/POST
MockHttpServletResponse servletResponse = new MockHttpServletResponse();
MockHttpServletRequest servletRequest = new MockHttpServletRequest(
servlet.getServletConfig().getServletContext());
// headers
for (String name : fullHttpRequest.headers().names())
{
for (String value : fullHttpRequest.headers().getAll(name))
{
servletRequest.addHeader(name, value);
}
}
String uri = fullHttpRequest.uri();
uri = new String(uri.getBytes("ISO8859-1"), "UTF-8");
uri = URLDecoder.decode(uri, "UTF-8");
UriComponents uriComponents = UriComponentsBuilder.fromUriString(uri).build();
String path = uriComponents.getPath();
path = URLDecoder.decode(path, "UTF-8");
servletRequest.setRequestURI(path);
servletRequest.setServletPath(path);
servletRequest.setMethod(fullHttpRequest.method().name());
if (uriComponents.getScheme() != null)
{
servletRequest.setScheme(uriComponents.getScheme());
}
if (uriComponents.getHost() != null)
{
servletRequest.setServerName(uriComponents.getHost());
}
if (uriComponents.getPort() != -1)
{
servletRequest.setServerPort(uriComponents.getPort());
}
ByteBuf content = fullHttpRequest.content();
content.readerIndex(0);
byte[] data = new byte[content.readableBytes()];
content.readBytes(data);
servletRequest.setContent(data);
if (uriComponents.getQuery() != null)
{
String query = UriUtils.decode(uriComponents.getQuery(), "UTF-8");
servletRequest.setQueryString(query);
}
if (parammap != null & & parammap.size() > 0)
{
for (String key : parammap.keySet())
{
servletRequest.addParameter(UriUtils.decode(key, "UTF-8"),
UriUtils.decode(parammap.get(key) == null "" : parammap.get(key), "UTF-8"));
}
}
servlet.service(servletRequest, servletResponse);
HttpResponseStatus status = HttpResponseStatus.valueOf(servletResponse.getStatus());
String result = servletResponse.getContentAsString();
result = StringUtils.isEmpty(result) status.toString() : result;
FullHttpResponse response = new DefaultFullHttpResponse(HttpVersion.HTTP_1_1, status,
Unpooled.copiedBuffer(result, CharsetUtil.UTF_8));
response.headers().set("Content-Type", "text/json;charset=UTF-8");
response.headers().set("Access-Control-Allow-Origin", "*");
response.headers().set("Access-Control-Allow-Headers",
"Content-Type,Content-Length, Authorization, Accept,X-Requested-With,X-File-Name");
response.headers().set("Access-Control-Allow-Methods", "PUT,POST,GET,DELETE,OPTIONS");
response.headers().set("Content-Length", Integer.valueOf(response.content().readableBytes()));
response.headers().set("Connection", "keep-alive");
ChannelFuture writeFuture = ctx.writeAndFlush(response);
writeFuture.addListener(ChannelFutureListener.CLOSE);
}
}
/**
* 获取post请求、get请求的参数保存到map中
*/
private Map<String, String> getRequestParams(ChannelHandlerContext ctx, HttpRequest req)
{
Map<String, String> requestParams = new HashMap<String, String>();
// 处理get请求
if (req.method() == HttpMethod.GET)
{
QueryStringDecoder decoder = new QueryStringDecoder(req.uri());
Map<String, List<String>> parame = decoder.parameters();
Iterator<Entry<String, List<String>>> iterator = parame.entrySet().iterator();
while (iterator.hasNext())
{
Entry<String, List<String>> next = iterator.next();
requestParams.put(next.getKey(), next.getValue().get(0));
}
}
// 处理POST请求
if (req.method() == HttpMethod.POST)
{
HttpPostRequestDecoder decoder = new HttpPostRequestDecoder(new DefaultHttpDataFactory(false), req);
List<InterfaceHttpData> postData = decoder.getBodyHttpDatas(); //
for (InterfaceHttpData data : postData)
{
if (data.getHttpDataType() == HttpDataType.Attribute)
{
MemoryAttribute attribute = (MemoryAttribute) data;
requestParams.put(attribute.getName(), attribute.getValue());
}
}
}
return requestParams;
}
}
启来后，使用postman，调用本地接口。
发表评论
评论列表(1)
rocky6683
2022.6.9 09:06
支持一下