我正在使用Jboss fuse 6.3和apache camel 2.17.我想将一条巨大的json消息拆分为camel spring dsl中的多条消息。
示例消息结构如下所示，我有9个国家/地区需要分成两个数组作为5个消息，最后一条消息只包含一个数组。消息的顺序并不重要。
输入讯息：
[{
"Cities": [{
"name": "Paris",
"lat": "45.75",
"lng": "4.583333"
}, {
"name": "Marseille",
"lat": "45.97",
"lng": "4.54"
}, {
"name": "Lyon",
"lat": "24.75",
"lng": "4.75"
}, {
"name": "Toulouse",
"lat": "37.75",
"lng": "4.755"
}, {
"name": "Nice",
"lat": "89.75",
"lng": "4.77"
}],
"country": "FR"
},
{
"Cities": [{
"name": "Berlin",
"lat": "45.75",
"lng": "4.583333"
}, {
"name": "Hamburg",
"lat": "45.97",
"lng": "4.54"
}, {
"name": "Munich",
"lat": "24.75",
"lng": "4.75"
}, {
"name": "Cologne",
"lat": "37.75",
"lng": "4.755"
}, {
"name": "Frankfurt",
"lat": "89.75",
"lng": "4.77"
}],
"country": "DE"
}, {
"Cities": [{
"name": "mumbai",
"lat": "45.75",
"lng": "4.583333"
}, {
"name": "Bangalore",
"lat": "45.97",
"lng": "4.54"
}, {
"name": "Delhi",
"lat": "24.75",
"lng": "4.75"
}, {
"name": "Chattisgarh",
"lat": "37.75",
"lng": "4.755"
}, {
"name": "Hyderabad",
"lat": "89.75",
"lng": "4.77"
}],
"country": "IN"
}, {
"Cities": [{
"name": "Aberdeen",
"lat": "45.75",
"lng": "4.583333"
}, {
"name": "Armagh",
"lat": "45.97",
"lng": "4.54"
}, {
"name": "Bangor",
"lat": "24.75",
"lng": "4.75"
}, {
"name": "Bath",
"lat": "37.75",
"lng": "4.755"
}, {
"name": "Belfast",
"lat": "89.75",
"lng": "4.77"
}],
"country": "UK"
}, {
"Cities": [{
"name": "Budapest",
"lat": "45.75",
"lng": "4.583333"
}, {
"name": "Debrecen",
"lat": "45.97",
"lng": "4.54"
}, {
"name": "Szeged",
"lat": "24.75",
"lng": "4.75"
}, {
"name": "Miskolc",
"lat": "37.75",
"lng": "4.755"
}, {
"name": "Pecs",
"lat": "89.75",
"lng": "4.77"
}],
"country": "HUNGARY"
}, {
"Cities": [{
"name": "Alingsas",
"lat": "45.75",
"lng": "4.583333"
}, {
"name": "Arboga",
"lat": "45.97",
"lng": "4.54"
}, {
"name": "Arvika",
"lat": "24.75",
"lng": "4.75"
}, {
"name": "Askersund",
"lat": "37.75",
"lng": "4.755"
}, {
"name": "Avesta",
"lat": "89.75",
"lng": "4.77"
}],
"country": "SWEDEN"
}, {
"Cities": [{
"name": "Amsterdam",
"lat": "45.75",
"lng": "4.583333"
}, {
"name": "Den Helder",
"lat": "45.97",
"lng": "4.54"
}, {
"name": "Edam",
"lat": "24.75",
"lng": "4.75"
}, {
"name": "Haarlem",
"lat": "37.75",
"lng": "4.755"
}, {
"name": "Purmerend",
"lat": "89.75",
"lng": "4.77"
}],
"country": "NETHERLANDS"
}, {
"Cities": [{
"name": "Abrantes",
"lat": "45.75",
"lng": "4.583333"
}, {
"name": "Agualva-Cacem",
"lat": "45.97",
"lng": "4.54"
}, {
"name": "Agueda",
"lat": "24.75",
"lng": "4.75"
}, {
"name": "Albufeira",
"lat": "37.75",
"lng": "4.755"
}, {
"name": "Alcacer do Sal",
"lat": "89.75",
"lng": "4.77"
}],
"country": "PORTUGAL"
}, {
"Cities": [{
"name": "Barcelona",
"lat": "45.75",
"lng": "4.583333"
}, {
"name": "madrid",
"lat": "45.97",
"lng": "4.54"
}, {
"name": "Saragossa",
"lat": "24.75",
"lng": "4.75"
}, {
"name": "Salamanca",
"lat": "37.75",
"lng": "4.755"
}, {
"name": "Granada",
"lat": "89.75",
"lng": "4.77"
}],
"country": "SPAIN"
}
]
预期产出：
首先拆分：
[{
"Cities": [{
"name": "Paris",
"lat": "45.75",
"lng": "4.583333"
}, {
"name": "Marseille",
"lat": "45.97",
"lng": "4.54"
}, {
"name": "Lyon",
"lat": "24.75",
"lng": "4.75"
}, {
"name": "Toulouse",
"lat": "37.75",
"lng": "4.755"
}, {
"name": "Nice",
"lat": "89.75",
"lng": "4.77"
}],
"country": "FR"
},
{
"Cities": [{
"name": "Berlin",
"lat": "45.75",
"lng": "4.583333"
}, {
"name": "Hamburg",
"lat": "45.97",
"lng": "4.54"
}, {
"name": "Munich",
"lat": "24.75",
"lng": "4.75"
}, {
"name": "Cologne",
"lat": "37.75",
"lng": "4.755"
}, {
"name": "Frankfurt",
"lat": "89.75",
"lng": "4.77"
}],
"country": "DE"
}
]
第二次分裂：
[{
"Cities": [{
"name": "mumbai",
"lat": "45.75",
"lng": "4.583333"
}, {
"name": "Bangalore",
"lat": "45.97",
"lng": "4.54"
}, {
"name": "Delhi",
"lat": "24.75",
"lng": "4.75"
}, {
"name": "Chattisgarh",
"lat": "37.75",
"lng": "4.755"
}, {
"name": "Hyderabad",
"lat": "89.75",
"lng": "4.77"
}],
"country": "IN"
},{
"Cities": [{
"name": "Aberdeen",
"lat": "45.75",
"lng": "4.583333"
}, {
"name": "Armagh",
"lat": "45.97",
"lng": "4.54"
}, {
"name": "Bangor",
"lat": "24.75",
"lng": "4.75"
}, {
"name": "Bath",
"lat": "37.75",
"lng": "4.755"
}, {
"name": "Belfast",
"lat": "89.75",
"lng": "4.77"
}],
"country": "UK"
}
]
。 。
第五次分裂：
[{
"Cities": [{
"name": "Barcelona",
"lat": "45.75",
"lng": "4.583333"
}, {
"name": "madrid",
"lat": "45.97",
"lng": "4.54"
}, {
"name": "Saragossa",
"lat": "24.75",
"lng": "4.75"
}, {
"name": "Salamanca",
"lat": "37.75",
"lng": "4.755"
}, {
"name": "Granada",
"lat": "89.75",
"lng": "4.77"
}],
"country": "SPAIN"
}
]
我在下面尝试从Ricardo的帖子中引用Apache Camel with Json Array split。但我不确定如何在spring dsl中配置聚合（AggregationStrategies.groupedExchange（））。
骆驼路线：
<split streaming="true">
<jsonpath>$</jsonpath>
<aggregate completionTimeout="1000" completionSize="2" groupExchanges="true">
</aggregate>
<log message="${body}"></log>
</split>
答案 0 :(得分：0)
这是一个如何使用Spring DSL分割JSON数组的简单示例：
<split>
<jsonpath>$</jsonpath>
<!-- Add rest of the logic here -->
</split>
答案 1 :(得分：0)
上述问题中的Spring DSL示例就是这样：
<camel:route>
<camel:from uri="direct:start" />
<camel:split streaming="true">
<camel:jsonpath>$</camel:jsonpath>
<camel:aggregate completionSize="5"
completionTimeout="1000" groupExchanges="true">
<camel:correlationExpression>
<camel:constant>true</camel:constant>
</camel:correlationExpression>
<camel:log message="${body}"></camel:log>
<camel:to uri="mock:result"></camel:to>
</camel:aggregate>
</camel:split>
</camel:route>
这是一个完整的实施示例here.
groupExchange属性只返回默认聚合策略：GroupedExchangeAggregationStrategy。
您可以实现自己的并将其作为bean参数传递给您的DSL，如下所示：
<camel:route>
<camel:from uri="direct:start" />
<camel:split streaming="true">
<camel:jsonpath>$</camel:jsonpath>
<camel:aggregate strategyRef="stringConcatStrategy" completionSize="5"
completionTimeout="1000" >
<camel:correlationExpression>
<camel:constant>true</camel:constant>
</camel:correlationExpression>
<camel:log message="${body}"></camel:log>
<camel:to uri="mock:result"></camel:to>
</camel:aggregate>
</camel:split>
</camel:route>
干杯！