Camel 发布HTTP
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在没有使用Camel之前，我们使用JDK 自带的HttpServer来发布Http服务。
具体的代码不看了，我们看下发布Http服务相关的类有多少吧...
很多是吧...
这里面还要写配置文件，配置上下文接口和接口实现类...实在是麻烦....
再来看看使用Camel，是怎么发布HTTP服务的...
Apache Camel 发布Http服务 完整代码/工程Demo 我上传了...
现在优快云下载必须要积分了...以前我都是0积分的，方便积分不多的童鞋...哎优快云变了...
代码一：
package com.test.camel.helloworld;
import org.apache.camel.builder.RouteBuilder;
import org.apache.camel.impl.DefaultCamelContext;
import org.apache.camel.model.ModelCamelContext;
import org.apache.log4j.PropertyConfigurator;
/**
* 郑重其事的写下 helloworld for Apache Camel
*/
public class HelloWorld extends RouteBuilder {
public static void main(String[] args) throws Exception {
PropertyConfigurator.configure("./conf/log4j.properties");
PropertyConfigurator.configureAndWatch("./conf/log4j.properties", 1000);
// 这是camel上下文对象，整个路由的驱动全靠它了。
ModelCamelContext camelContext = new DefaultCamelContext();
// 启动route
camelContext.start();
// 将我们编排的一个完整消息路由过程，加入到上下文中
camelContext.addRoutes(new HelloWorld());
/**
* ==========================<br>
* 为什么我们先启动一个Camel服务 再使用addRoutes添加编排好的路由呢？<br>
* 这是为了告诉各位读者，Apache Camel支持动态加载/卸载编排的路由 这很重要，因为后续设计的Broker需要依赖这种能力<br>
* ==========================<br>
*/
// 通用没有具体业务意义的代码，只是为了保证主线程不退出
synchronized (HelloWorld.class) {
HelloWorld.class.wait();
}
}
@Override
public void configure() throws Exception {
// 在本代码段之下随后的说明中，会详细说明这个构造的含义
from("jetty:http://0.0.0.0:8282/doHelloWorld").process(new HttpProcessor()).to("log:helloworld?showExchangeId=true");
}
}
代码二：
package com.test.camel.helloworld;
import java.io.IOException;
import java.io.InputStream;
import org.apache.camel.Exchange;
import org.apache.camel.ExchangePattern;
import org.apache.camel.Message;
import org.apache.camel.Processor;
import org.apache.camel.http.common.HttpMessage;
import org.apache.commons.io.IOUtils;
/**
* 这个处理器用来完成输入的json格式的转换
*
*/
public class HttpProcessor implements Processor {
@Override
public void process(Exchange exchange) throws Exception {
// 因为很明确消息格式是http的，所以才使用这个类
// 否则还是建议使用org.apache.camel.Message这个抽象接口
HttpMessage message = (HttpMessage) exchange.getIn();
InputStream bodyStream = (InputStream) message.getBody();
String inputContext = this.analysisMessage(bodyStream);
bodyStream.close();
// 存入到exchange的out区域
if (exchange.getPattern() == ExchangePattern.InOut) {
Message outMessage = exchange.getOut();
outMessage.setBody(inputContext + " || out");
// System.out.println(outMessage.getBody());
}
}
/**
* 从stream中分析字符串内容
*
* @param bodyStream
* @return
*/
private String analysisMessage(InputStream bodyStream) throws IOException {
String responseStr = IOUtils.toString(bodyStream, "UTF-8");
// System.out.println(responseStr);
return responseStr;
}
}
下面这个是以前测试HTTP服务的代码，直接拿来用了..
代码三：
package com.test.client.http;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.net.HttpURLConnection;
import java.nio.charset.Charset;
public class HttpClient {
public static final String CODEFORMAT = "UTF-8";
public static String doPost(String requestBody, int timeout, HttpURLConnection http) throws Exception {
String retResult = "";
try {
// 设置是否从HttpURLConnection读入 ，默认是true
http.setDoInput(true);
// post请求的时候需要将DoOutput 设置成true 参数要放在http正文内，因此需要设为true ，默认是false
http.setDoOutput(true);
// post请求UseCaches 设置成false 不能设置缓存
http.setUseCaches(false);
// 连接主机超时时间
http.setConnectTimeout(timeout);
// 从主机读取数据超时 （都是毫秒）
http.setReadTimeout(timeout);
// 默认是get
http.setRequestMethod("POST");
http.setRequestProperty("accept", "*/*");
http.setRequestProperty("connection", "Keep-Alive");
http.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
// 参数设置完成之后进行连接
http.connect();
OutputStreamWriter osw = new OutputStreamWriter(http.getOutputStream(), Charset.forName("UTF-8"));
osw.write(requestBody);
osw.flush();
osw.close();
if (http.getResponseCode() == 200) {
BufferedReader in = new BufferedReader(new InputStreamReader(http.getInputStream(), Charset.forName("UTF-8")));
String inputLine;
while ((inputLine = in.readLine()) != null) {
retResult += inputLine;
}
in.close();
} else {
throw new Exception("the http.getResponseCode() is " + http.getResponseCode());
}
} catch (Exception e) {
e.printStackTrace();
} finally {
if (http != null) {
http.disconnect();
http = null;
}
}
return retResult;
}
}
代码四：
package com.test.client.http;
import java.net.HttpURLConnection;
import java.net.URL;
import org.json.JSONObject;
public class TestClient {
public static void main(String[] args) {
URL url = null;
HttpURLConnection http = null;
try {
url = new URL("http://0.0.0.0:8282/doHelloWorld");
for (int i = 0; i < 1; i++) {
System.out.println("http post start !!!");
Long startTime = System.currentTimeMillis();
http = (HttpURLConnection) url.openConnection();
// ************************************************************
JSONObject authorityJson = new JSONObject();
authorityJson.put("userid", "222222222222222"); // 用户身份证号码
authorityJson.put("username", "VIP_USER");// 用户姓名
authorityJson.put("userdept", "VIP");// 用户单位
JSONObject queryInfoJson = new JSONObject();
queryInfoJson.put("source", "60155");// 测试用
queryInfoJson.put("condition", "FIRSTKEY = '320103671118051'");
queryInfoJson.put("starttime", "");
queryInfoJson.put("endtime", "");
JSONObject requestJson = new JSONObject();
requestJson.put("authority", authorityJson);
requestJson.put("queryInfo", queryInfoJson);
// ************************************************************
StringBuffer sb = new StringBuffer();
sb.append(requestJson.toString());
String result = HttpClient.doPost(sb.toString(), 30000000, http);
System.out.println("http post end cost :" + (System.currentTimeMillis() - startTime) + "ms");
System.out.println(result);
Thread.sleep(500);
}
} catch (Exception e) {
e.printStackTrace();
}
}
}
代码五：
#####输出到控制台#####
log4j.rootLogger=DEBUG,CONSOLE,ARKSERVICES
log4j.addivity.org.apache=true
log4j.appender.CONSOLE=org.apache.log4j.ConsoleAppender
log4j.appender.CONSOLE.Threshold=DEBUG
log4j.appender.CONSOLE.layout=org.apache.log4j.PatternLayout
log4j.appender.CONSOLE.layout.ConversionPattern=%d %p %l - %m%n
#####输出到文件#####
log4j.appender.ARKSERVICES=org.apache.log4j.RollingFileAppender
log4j.appender.ARKSERVICES.File=../log/camel-test.log
log4j.appender.ARKSERVICES.Threshold=DEBUG
log4j.appender.ARKSERVICES.MaxBackupIndex=5
log4j.appender.ARKSERVICES.MaxFileSize=100MB
log4j.appender.ARKSERVICES.layout=org.apache.log4j.PatternLayout
log4j.appender.ARKSERVICES.layout.ConversionPattern=%d %t %p %l - %m%n
log4j.logger.org.eclipse.jetty=OFF
上述代码是一个完整可运行的测试样例，可以直接拿来使用。
它展示了一个简单的可以实际运行的消息路由规则：
首先from语句中填写的"jetty:http://0.0.0.0:8282/doHelloWorld"，表示这个编排好的路由的消息入口。
它使用HTTP传输协议，访问本物理节点上任何IP(127.0.0.0或192.168.1.1)，在端口8282上的请求，都可以将HTTP携带的消息传入这个路由。
接下来消息会在HttpProcessor这个自定义的处理器中进行转换。
为了看清原理，HttpProcessor中的消息转换很简单，在HTTP传入的JSON字符串的末尾，加上一个" ||out"，并进行输出。
Apache Camel中自带了很多的处理器，并且可以自行实现Processor接口来实现自己的处理逻辑。
最后，消息被传输到一个endPoint控制端点，这个endPoint控制端点的URI描述(log:helloworld?showExchangeId=true)，表明它是一个Log4j的实现，
所以消息最终会以Log日志的方式输出到控制台上，到此，这个编排的路由就执行完了。
Apache Camel Endpoint同时发布多个服务
好奇，测试一下，Camel能不能同时发布多个服务。
代码一：
package com.camel.directcamel2;
import java.io.InputStream;
import org.apache.camel.Exchange;
import org.apache.camel.ExchangePattern;
import org.apache.camel.Message;
import org.apache.camel.Processor;
import org.apache.camel.builder.RouteBuilder;
import org.apache.camel.http.common.HttpMessage;
import org.apache.camel.impl.DefaultCamelContext;
import org.apache.camel.model.ModelCamelContext;
import org.apache.commons.io.IOUtils;
import org.apache.log4j.PropertyConfigurator;
/**
* 模拟同时，发布两个http服务，不同的url，处理不同的业务逻辑
*
* @author CYX
* @time 2017年12月15日下午3:09:27
*/
public class DirectCamel {
public static void main(String[] args) throws Exception {
// 加载日志
PropertyConfigurator.configure("./conf/log4j.properties");
PropertyConfigurator.configureAndWatch("./conf/log4j.properties", 1000);
// 这是camel上下文对象，整个路由的驱动全靠它了。
ModelCamelContext camelContext = new DefaultCamelContext();
// 启动route
camelContext.start();
// 首先将两个完整有效的路由注册到Camel服务中
camelContext.addRoutes(new RouteBuilder() {
@Override
public void configure() throws Exception {
// 连接路由：DirectRouteB
from("jetty:http://0.0.0.0:8282/directCamelaa").process(new Processor() {
@Override
public void process(Exchange exchange) throws Exception {
// 因为很明确消息格式是http的，所以才使用这个类
// 否则还是建议使用org.apache.camel.Message这个抽象接口
HttpMessage message = (HttpMessage) exchange.getIn();
InputStream bodyStream = (InputStream) message.getBody();
String inputContext = IOUtils.toString(bodyStream, "UTF-8");
System.out.println("A inputContext -- " + inputContext);
bodyStream.close();
// 存入到exchange的out区域
if (exchange.getPattern() == ExchangePattern.InOut) {
Message outMessage = exchange.getOut();
outMessage.setBody(inputContext + " || aaa");
}
}
}).to("log:directRouteARouteBuilder?showExchangeId=true");
}
});
camelContext.addRoutes(new RouteBuilder() {
@Override
public void configure() throws Exception {
from("jetty:http://0.0.0.0:8282/directCamelbb").process(new Processor() {
@Override
public void process(Exchange exchange) throws Exception {
// 因为很明确消息格式是http的，所以才使用这个类
// 否则还是建议使用org.apache.camel.Message这个抽象接口
HttpMessage message = (HttpMessage) exchange.getIn();
InputStream bodyStream = (InputStream) message.getBody();
String inputContext = IOUtils.toString(bodyStream, "UTF-8");
System.out.println("B inputContext -- " + inputContext);
// 存入到exchange的out区域
if (exchange.getPattern() == ExchangePattern.InOut) {
Message outMessage = exchange.getOut();
outMessage.setBody(bodyStream + " || outbbbb");
}
}
}).to("log:directRouteBRouteBuilder?showExchangeId=true");
}
});
// 通用没有具体业务意义的代码，只是为了保证主线程不退出
synchronized (DirectCamel.class) {
DirectCamel.class.wait();
}
}
}
测试、代码二：
package com.test.client.directcamel2;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.net.HttpURLConnection;
import java.nio.charset.Charset;
public class HttpClient {
public static final String CODEFORMAT = "UTF-8";
public static String doPost(String requestBody, int timeout, HttpURLConnection http) throws Exception {
String retResult = "";
try {
// 设置是否从HttpURLConnection读入 ，默认是true
http.setDoInput(true);
// post请求的时候需要将DoOutput 设置成true 参数要放在http正文内，因此需要设为true ，默认是false
http.setDoOutput(true);
// post请求UseCaches 设置成false 不能设置缓存
http.setUseCaches(false);
// 连接主机超时时间
http.setConnectTimeout(timeout);
// 从主机读取数据超时 （都是毫秒）
http.setReadTimeout(timeout);
// 默认是get
http.setRequestMethod("POST");
http.setRequestProperty("accept", "*/*");
http.setRequestProperty("connection", "Keep-Alive");
http.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
// 参数设置完成之后进行连接
http.connect();
OutputStreamWriter osw = new OutputStreamWriter(http.getOutputStream(), Charset.forName("UTF-8"));
osw.write(requestBody);
osw.flush();
osw.close();
if (http.getResponseCode() == 200) {
BufferedReader in = new BufferedReader(new InputStreamReader(http.getInputStream(), Charset.forName("UTF-8")));
String inputLine;
while ((inputLine = in.readLine()) != null) {
retResult += inputLine;
}
in.close();
} else {
throw new Exception("the http.getResponseCode() is " + http.getResponseCode());
}
} catch (Exception e) {
e.printStackTrace();
} finally {
if (http != null) {
http.disconnect();
http = null;
}
}
return retResult;
}
}
测试、代码三：
package com.test.client.directcamel2;
import java.net.HttpURLConnection;
import java.net.URL;
import org.json.JSONObject;
public class TestClient {
public static void main(String[] args) {
URL url = null;
HttpURLConnection http = null;
try {
// url = new URL("http://0.0.0.0:8282/directCamelaa");
url = new URL("http://0.0.0.0:8282/directCamelbb");
for (int i = 0; i < 1; i++) {
System.out.println("http post start !!!");
Long startTime = System.currentTimeMillis();
http = (HttpURLConnection) url.openConnection();
// ************************************************************
JSONObject authorityJson = new JSONObject();
authorityJson.put("userid", "222222222222222"); // 用户身份证号码
authorityJson.put("username", "VIP_USER");// 用户姓名
authorityJson.put("userdept", "VIP");// 用户单位
JSONObject queryInfoJson = new JSONObject();
queryInfoJson.put("source", "60155");// 测试用
queryInfoJson.put("condition", "FIRSTKEY = '320103671118051'");
queryInfoJson.put("starttime", "");
queryInfoJson.put("endtime", "");
JSONObject requestJson = new JSONObject();
requestJson.put("authority", authorityJson);
requestJson.put("queryInfo", queryInfoJson);
// ************************************************************
StringBuffer sb = new StringBuffer();
sb.append(requestJson.toString());
System.out.println(sb.toString());
String result = HttpClient.doPost(sb.toString(), 30000000, http);
System.out.println("http post end cost :" + (System.currentTimeMillis() - startTime) + "ms");
System.out.println(result);
Thread.sleep(500);
}
} catch (Exception e) {
e.printStackTrace();
}
}
}
切换两个URL之后的输出结果：
| A inputContext -- {"authority":{"userdept":"VIP","userid":"222222222222222","username":"VIP_USER"},"queryInfo":{"condition":"FIRSTKEY = '320103671118051'","endtime":"","source":"60155","starttime":""}} [2017-12-15 17:09:44,710] [qtp192428201-19] [DEBUG] [org.apache.camel.processor.SendProcessor.process(SendProcessor.java:141)] - >>>> log://directRouteARouteBuilder?showExchangeId=true Exchange[ID-CYX-49644-1513328973453-0-1] [2017-12-15 17:09:44,725] [qtp192428201-19] [INFO] [org.apache.camel.util.CamelLogger.log(CamelLogger.java:159)] - Exchange[Id: ID-CYX-49644-1513328973453-0-1, ExchangePattern: InOut, BodyType: String, Body: {"authority":{"userdept":"VIP","userid":"222222222222222","username":"VIP_USER"},"queryInfo":{"condition":"FIRSTKEY = '320103671118051'","endtime":"","source":"60155","starttime":""}} || aaa] [2017-12-15 17:09:44,725] [qtp192428201-19] [DEBUG] [org.apache.camel.http.common.DefaultHttpBinding.doWriteDirectResponse(DefaultHttpBinding.java:489)] - Streaming response in chunked mode with buffer size 32768 |
| B inputContext -- {"authority":{"userdept":"VIP","userid":"222222222222222","username":"VIP_USER"},"queryInfo":{"condition":"FIRSTKEY = '320103671118051'","endtime":"","source":"60155","starttime":""}} [2017-12-15 17:10:22,355] [qtp192428201-21] [DEBUG] [org.apache.camel.processor.SendProcessor.process(SendProcessor.java:141)] - >>>> log://directRouteBRouteBuilder?showExchangeId=true Exchange[ID-CYX-49644-1513328973453-0-4] [2017-12-15 17:10:22,355] [qtp192428201-21] [INFO] [org.apache.camel.util.CamelLogger.log(CamelLogger.java:159)] - Exchange[Id: ID-CYX-49644-1513328973453-0-4, ExchangePattern: InOut, BodyType: String, Body: org.apache.camel.converter.stream.InputStreamCache@569e9cb3 || outbbbb] [2017-12-15 17:10:22,355] [qtp192428201-21] [DEBUG] [org.apache.camel.http.common.DefaultHttpBinding.doWriteDirectResponse(DefaultHttpBinding.java:489)] - Streaming response in chunked mode with buffer size 32768 |
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