spring boot集成spring integration -

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spring boot集成spring integration

博客分类：

spring boot
spring integration

spring integration

主要使用integration的聚合器

1.pom.xml关键jar引用

<dependency>
	<groupId>org.springframework.boot</groupId>
	<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
	<groupId>org.springframework.boot</groupId>
	<artifactId>spring-boot-starter-integration</artifactId>
</dependency>
<dependency>
	<groupId>org.springframework.integration</groupId>
	<artifactId>spring-integration-http</artifactId>
</dependency>
<dependency>
	<groupId>org.springframework.integration</groupId>
	<artifactId>spring-integration-stream</artifactId>
</dependency>
<dependency>
	<groupId>com.alibaba</groupId>
	<artifactId>fastjson</artifactId>
	<version>1.2.51</version>
</dependency>
<dependency>
	<groupId>commons-io</groupId>
	<artifactId>commons-io</artifactId>
	<version>2.6</version>
</dependency>
<dependency>
	<groupId>org.apache.httpcomponents</groupId>
	<artifactId>httpmime</artifactId>
	<version>4.5.6</version>
</dependency>
<dependency>
	<groupId>ch.qos.logback</groupId>
	<artifactId>logback-core</artifactId>
	<scope>provided</scope>
</dependency>

2.http-inbound-config.xml配置

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:int="http://www.springframework.org/schema/integration"
       xmlns:int-http="http://www.springframework.org/schema/integration/http"
       xmlns:context="http://www.springframework.org/schema/context" 
xmlns="http://www.springframework.org/schema/beans"
       xmlns:task="http://www.springframework.org/schema/task"
       xsi:schemaLocation="http://www.springframework.org/schema/beans 
http://www.springframework.org/schema/beans/spring-beans.xsd
		http://www.springframework.org/schema/integration 
http://www.springframework.org/schema/integration/spring-integration.xsd
		http://www.springframework.org/schema/task 
http://www.springframework.org/schema/task/spring-task.xsd
		http://www.springframework.org/schema/integration/http 
http://www.springframework.org/schema/integration/http/spring-integration-http.xsd 
http://www.springframework.org/schema/context 
http://www.springframework.org/schema/context/spring-context.xsd">

	<int:channel id="echoChannel">
		<int:queue capacity="1000"/>
	</int:channel>
	<int-http:inbound-gateway request-channel="echoChannel" path="/cc/test" 
               supported-methods="POST" request-payload-type="java.lang.String">
        <int-http:cross-origin/>
    </int-http:inbound-gateway>
    <int:chain input-channel="echoChannel" output-channel="search-request-a">
		<int:poller fixed-rate="1" max-messages-per-poll="10" time-unit="SECONDS">
		</int:poller>
		<int:header-enricher>
        	<int:header name="ssmail" value="test"/>
        </int:header-enricher>
		<int-http:outbound-gateway charset="UTF-8" http-method="POST" 
                 expected-response-type="com.test.integration.splitteraggregator.CriteriaA"
		 encode-uri="true" url="{testApi}" uri-variables-expression="@testApi" 
                 reply-timeout="30000" />
	</int:chain>
	
    <bean id="serviceActivatorA" 
      class="com.test.integration.splitteraggregator.ServiceActivatorA"></bean>
	<int:service-activator input-channel="search-request-a"
		method="service" output-channel="search-reply" ref="serviceActivatorA">
	</int:service-activator>
	
	<int:channel id="echoChannel2">
		<int:queue capacity="1000"/>
	</int:channel>
	<int:logging-channel-adapter id="logger" level="INFO" log-full-message="true"/>
	<int-http:inbound-gateway request-channel="echoChannel2" path="/cc/test2" 
            supported-methods="POST" request-payload-type="java.lang.String">
        <int-http:cross-origin/>
    </int-http:inbound-gateway>
    <int:chain input-channel="echoChannel2" output-channel="search-request-b">
		<int:poller fixed-rate="1" max-messages-per-poll="10" time-unit="SECONDS">
		</int:poller>
		<int:header-enricher>
        	<int:header name="ssmail" value="test"/>
        </int:header-enricher>
		<int-http:outbound-gateway charset="UTF-8" http-method="POST" 
                    expected-response-type="byte[]"
		    encode-uri="true" url="{test2Api}" uri-variables-expression="@test2Api" 
                    reply-timeout="30000" />
	</int:chain>
	
	<!-- <int:channel id="search-request-b"/> -->
    <bean id="serviceActivatorB" 
      class="com.test.integration.splitteraggregator.ServiceActivatorB"></bean>
	<int:service-activator input-channel="search-request-b"
		method="service" output-channel="search-reply" ref="serviceActivatorB">
	</int:service-activator>
	
	<int:channel id="aggregated-reply"/>
	<int:channel id="search-reply" >
	<int:interceptors>
			<int:wire-tap channel="logger" />
		</int:interceptors>
	</int:channel>
	<int:aggregator input-channel="search-reply" method="aggregate" 
		ref="resultAggregator" output-channel="aggregated-reply"
		message-store="searchResultMessageStore"
		expire-groups-upon-completion="true"
		correlation-strategy-expression="headers['ssmail']"
        expire-groups-upon-timeout="true"
        release-strategy-expression="size() == 2" 
		send-partial-result-on-expiry="true">
	</int:aggregator>
	<int:logging-channel-adapter channel="aggregated-reply" level="INFO" 
           log-full-message="true"></int:logging-channel-adapter>

	<!-- Define a store for our search results and set up a reaper that will
		periodically expire those results. -->
	<bean id="searchResultMessageStore" 
           class="org.springframework.integration.store.SimpleMessageStore" />

	<bean id="searchResultMessageStoreReaper" 
           class="org.springframework.integration.store.MessageGroupStoreReaper">
		<property name="messageGroupStore" ref="searchResultMessageStore" />
		<property name="timeout" value="20000" />
	</bean>
	<bean id="resultAggregator" 
           class="com.test.integration.splitteraggregator.ResultAggregator" />
	
</beans>

说明：path="/cc/test"是本地监听路径，标蓝url="{testApi}"即为实际访问路径，并返回结果到search-request-a这个通道中，再由serviceActivatorA处理结果集，最后交给search-reply聚合数据。

3.相关java代码

//响应信息
public class Result {
	private String title;
	private String content;
}

public class CriteriaA {
	private Boolean success;//根据系统响应属性不同而定义
	private String code;
        private String error;
	private Result result;
}

public class CriteriaB {
	private Integer code;//根据系统响应属性不同而定义
        private String errmsg;
	private Result result;
}

//响应信息处理，处理方式根据系统响应结果而定
public class ServiceActivatorA {
	public Result service(CriteriaA criteria) {
		Result result = new Result();
		if(criteria.getSuccess() && criteria.getResult!=null){
			result = criteria.getResult();
		}
		return result;
	}
}

public class ServiceActivatorB {
	public Result service(byte[] data) {
		Result result = new Result();
		try {
			String dataStr = new String(data, "UTF-8");
			CriteriaB criterib = JSON.parseObject(dataStr, CriteriaB.class);
			if(criterib.getCode()==10000 && criterib.getResult()!=null) {
				result = criterib.getResult();
			}
		} catch (Exception e) {
			e.printStackTrace();
		}
		return result;
	}
}

//聚合结果集
public class CompositeResult extends Result {
	private Collection<Result> results = new ArrayList<Result>();
	public Collection<Result> getResults() {
		return results;
	}
}

public class ResultAggregator {
	public Result aggregate(Collection<Result> results) {
		CompositeResult result = new CompositeResult();
		result.getResults().addAll(results);
		System.out.println("result size:"+result.getResults().size());
		//具体业务处理。。。
		return result;
	}
}

另外说明uri-variables-expression动态配置：获取bean对象返回值（该值必须为map），然后通过{xxx}这个方式获取，关键代码：

@Configuration
public class UrlConfig {
	@Value("${url.testApi}")
	private String testApi;
	@Value("${url.test2Api}")
	private String test2Api;

	@Bean(name="testApi")
	public Map<String, String> getTestApi() {
		Map<String, String> map = new HashMap<String, String>();
		map.put("testApi", testApi);
		return map;
	}

	@Bean(name="test2Api")
	public Map<String, String> getTest2Api() {
		Map<String, String> map = new HashMap<String, String>();
		map.put("test2Api", test2Api);
		return map;
	}
}

4.项目启动

@SpringBootApplication
@ImportResource(locations = "classpath:http-inbound-config.xml")
@EnableIntegration
public class HttpApplication {
    public static void main(String[] args) {
        SpringApplication.run(HttpApplication.class, args);
    }
}

5.访问，注意要保证跳转的路径（testApi，test2Api）能访问

可通过Restlet Client访问，post请求输入localhost:8080/cc/test，localhost:8080/cc/test2，若有参数就输入参数