基本上,我想使用 XContentBuilder
获取此查询:
{"query":{
"bool": {
"must": [
{ "match": { "fields.title": "Star"}},
{ "match": { "fields.title": "Wars"}}
]
}}}
这是我的代码:
XContentBuilder query = XContentFactory.jsonBuilder()
def array = ["Star", "Wars"]
def field = "field.title"
query.startObject()
query.startObject("bool")
query.startArray("must")
array.each { value ->
query.startObject("match")
query.startObject()
query.field(field, value)
query.endObject()
query.endObject()
}
query.endArray()
query.endObject()
query.endObject()
QueryBuilder finalQuery = QueryBuilders.wrapperQuery(query.string())
但是我收到了这个错误:
Caused by: com.fasterxml.jackson.core.JsonGenerationException: Can not write a field name, expecting a value
at com.fasterxml.jackson.core.JsonGenerator._reportError(JsonGenerator.java:1897)
at com.fasterxml.jackson.core.json.UTF8JsonGenerator.writeFieldName(UTF8JsonGenerator.java:185)
at org.elasticsearch.common.xcontent.json.JsonXContentGenerator.writeFieldName(JsonXContentGenerator.java:183)
at org.elasticsearch.common.xcontent.XContentBuilder.field(XContentBuilder.java:246)
at org.elasticsearch.common.xcontent.XContentBuilder.startObject(XContentBuilder.java:222)
at gde.plugin.search.elasticsearch.ElasticSearchWrapper$_clientQuery_closure16$$ERM0UO5B.doCall(ElasticSearchWrapper.groovy:737)
at gde.plugin.search.elasticsearch.ElasticSearchWrapper$$ERM0UO51.clientQuery(ElasticSearchWrapper.groovy:736)
at gde.plugin.search.SearchService.test(SearchService.groovy:158)
at gde.plugin.search.SearchController.test(SearchController.groovy:43)
... 36 common frames omitted
奇怪的是,当我删除 query.startObject("match")
及其关联行 query.endObject()
时,我不再有错误,但这不是我想要的查询...
{"query":{
"bool": {
"must": [
{ "fields.title": "Star"},
{ "fields.title": "Wars"}
]
}}}
最佳答案
看起来您需要额外的 startObject
和 endObject
调用。您需要它才能在每个 match
对象周围添加大括号。代码应如下所示:
XContentBuilder query = XContentFactory.jsonBuilder()
def array = ["Star", "Wars"]
def field = "field.title"
query.startObject()
query.startObject("bool")
query.startArray("must")
array.each { value ->
query.startObject()
query.startObject("match")
query.startObject()
query.field(field, value)
query.endObject()
query.endObject()
query.endObject()
}
query.endArray()
query.endObject()
query.endObject()
QueryBuilder finalQuery = QueryBuilders.wrapperQuery(query.string())
关于java - 为elasticsearch客户端构建XContentBuilder json查询,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/55395476/