Apache Camel rest组件内部可以使用多个框架实现rest,比如restlet、jetty、servlet等等,我这里使用restlet
首先加入依赖
<dependency> <groupId>org.apache.camel</groupId> <artifactId>camel-restlet</artifactId> <version>2.15.2</version> <scope>provided</scope> </dependency>
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:camel="http://camel.apache.org/schema/spring" xsi:schemaLocation=" http://camel.apache.org/schema/spring http://camel.apache.org/schema/spring/camel-spring.xsd http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd"> <bean id="product" class="com.pp.ProductProcessor" /> <camelContext id="restCamelContext" xmlns="http://camel.apache.org/schema/spring"> <restConfiguration bindingMode="auto" contextPath="" component="restlet" port="3387"/> <rest path="/api"> <!-- 访问路径 http://127.0.0.1:3387/api/products --> <get uri="/products" > <to uri="direct:products" /> </get> </rest> <route> <from uri="direct:products" /> <to uri="bean:product?method=parameter" /> </route> </camelContext> </beans>
http://127.0.0.1:3387/api/products?id=101&type=0 之后,就会进入到ProductProcessor类的parameter方法
那么在parameter方法里面,如何获取到这个url的参数呢?
有如下两个方法
一:
String queryString = exchange.getIn().getHeader(Exchange.HTTP_QUERY, String.class);
这样就获取到了url问号后面的所有字符串,然后,分割获取指定的参数
这里使用JDK1.8一行代码搞定
String queryString = "id=1&type=cmcc&name=admin"; Map<String, String> map = Stream.of(queryString.split("&")).map(obj -> obj.split("=")).collect(Collectors.toMap(entry -> entry[0], entry -> entry[1]));
二:
package com.pp; import java.util.Map; import org.apache.camel.Exchange; import org.apache.camel.component.restlet.RestletConstants; import org.restlet.data.Form; import org.restlet.engine.adapter.HttpRequest; public class ProductProcessor { public void parameter(Exchange exchange) { HttpRequest req = exchange.getIn().getHeader(RestletConstants.RESTLET_REQUEST, HttpRequest.class); Form form = req.getResourceRef().getQueryAsForm(); //这个map就是url上面的所有参数 Map<String, String> maps = form.getValuesMap(); System.out.println(maps.get("id"));//获取id参数 System.out.println(maps.get("type"));//获取type参数 exchange.getOut().setBody("this is out body"); } }
注意:这里的方法二只适用于restlet实现的rest,其它框架实现的rest不适用