提问人:florind 提问时间:12/23/2015 最后编辑:florind 更新时间:12/23/2015 访问量:1731
使用 JsonPath 更新数组元素
Update array element using JsonPath
问:
我正在尝试在 Java 中使用 jayway 的 JsonPath 替换 Json 数组中的某个元素。例:
{
"store": {
"book": [
{
"category": "reference",
"author": "Nigel Rees",
"title": "Sayings of the Century",
"price": 8.95
},
{
"category": "fiction",
"author": "Evelyn Waugh",
"title": "Sword of Honour",
"price": 12.99
},
{
"category": "fiction",
"author": "Herman Melville",
"title": "Moby Dick",
"isbn": "0-553-21311-3",
"price": 8.99
},
{
"category": "fiction",
"author": "J. R. R. Tolkien",
"title": "The Lord of the Rings",
"isbn": "0-395-19395-8",
"price": 22.99
}
],
"bicycle": {
"color": "red",
"price": 19.95
}
},
"expensive": 10
}
在这里,我希望能够替换数组中的第一本书。我可以使用此查询找到该元素$.store.book.[?(@.author =='Nigel Rees')]
然后,我使用此代码替换 this 节点:
Configuration configuration = Configuration.builder()
.jsonProvider(new JacksonJsonNodeJsonProvider())
.mappingProvider(new JacksonMappingProvider())
.build();
DocumentContext pbContext = JsonPath.using(configuration).parse(theAboveJson);
pbContext.set("$.store.book.[?(@.author =='Nigel Rees')]", someOtherJson);
但我注意到,新节点不是替换,而是插入到 books 数组中的位置 0。有没有办法实际替换数组元素?
答: 暂无答案
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