我正在尝试从大型json文件中提取数据。我需要从提取的嵌套对象和列表中匹配数据。
我为此编写了许多规范。最接近的“错误”解决方案使输出充满空值。当前的规格非常接近，但是它将一些数据保留在列表中，我需要以不同的方式分配它们。它使用两班制。
[
{
"Contents": [
{
"original": "<h4>Hour 1</h4>",
"type": "other"
},
{
"content": {
"artist": "01art1816-01",
"catalog_no": "cat1816-01",
"comp_work": "comp1816-01",
"organ": "org1816-01"
},
"original": "1816-01",
"type": "listing"
},
{
"content": {
"artist": "art1816-02",
"catalog_no": "1816-02",
"comp_work": "1816-02",
"organ": "1816-02"
},
"original": "1816-02",
"type": "listing"
}
],
"filepath": "/listings/2018/1816/index.html",
"program_number": "1816"
},
{
"Contents": [
{
"original": "<h4>Hour 1</h4>",
"type": "other"
},
{
"content": {
"artist": "02art1839-01",
"catalog_no": "1839-01",
"comp_work": "1839-01",
"organ": "1839-01"
},
"original": "1839-01",
"type": "listing"
},
{
"original": "origin-othr",
"type": "other"
}
],
"filepath": "/listings/2018/1839/index.html",
"program_number": "1839"
},
{
"Contents": [
{
"original": "<h4>Part 1</h4>",
"type": "other"
},
{
"content": {
"artist": "03art8843-01",
"catalog_no": "8843-01",
"comp_work": "8843-01",
"organ": "8843-01"
},
"original": "8843-01",
"type": "listing"
},
{
"content": {
"artist": "art8843-02",
"catalog_no": "8843-02",
"comp_work": "8843-02",
"organ": "8843-02"
},
"original": "8843-02",
"type": "listing"
}
],
"filepath": "/listings/1988/8843/index.html",
"program_number": "8843"
}
]
我需要“ program_number”和“ filepath”位于内容下的每个对象中。
预期：
{
"playlist": [{
"show": "1816",
"path": "/listings/2018/1816/index.html",
"artist": "artist1816-01",
"catalog_no": "cat1816-01",
"comp_work": "comp1816-01",
"organ": "org1816-01"
}, {
"show": "1816",
"path": "/listings/2018/1816/index.html",
"artist": "artist1816-02",
"catalog_no": "cat1816-02",
"comp_work": "comp1816-02",
"organ": "org1816-02"
}, {
"show": "1839",
"path": "/listings/2018/1839/index.html",
"artist": "artist1839-01",
"catalog_no": "cat1839-01",
"comp_work": "comp1839-01",
"organ": "org1839-01"
}, {
"show": "8843",
"path": "/listings/1988/8843/index.html",
"artist": "artist8843-01",
"catalog_no": "cat8843-01",
"comp_work": "comp8843-01",
"organ": "org8843-01"
}, {
"show": "8843",
"path": "/listings/1988/8843/index.html",
"artist": "artist8843-02",
"catalog_no": "cat8843-02",
"comp_work": "comp8843-02",
"organ": "org8843-02"
}]
}
实际：
{
"playlist": [{
"show": "1816",
"path": "/listings/2018/1816/index.html",
"artist": ["artist1816-01", "artist1816-02"],
"catalog_no": ["cat1816-01", "cat1816-02"],
"comp_work": ["comp1816-01", "comp1816-02"],
"organ": ["org1816-01", "org1816-02"]
}, {
"show": "1839",
"path": "/listings/2018/1839/index.html",
"artist": "artist1839-01",
"catalog_no": "cat1839-01",
"comp_work": "comp1839-01",
"organ": "org1839-01"
}, {
"show": "8843",
"path": "/listings/1988/8843/index.html",
"artist": ["artist8843-01", "artist8843-02"],
"catalog_no": ["cat8843-01", "cat8843-02"],
"comp_work": ["comp8843-01", "comp8843-02"],
"organ": ["org8843-01", "org8843-02"]
}]
}
使用此规范：
[
{
"operation": "shift",
"spec": {
"*": {
"program_number": "playlist.[&1].show",
"filepath": "playlist.[&1].path",
"Contents": {
"*": {
"type": {
"listing": {
"@(2,content)": "playlist.[&5]"
}
}
}
}
}
}
},
{
"operation": "shift",
"spec": {
"playlist": {
"*": {
"*": {
"artist": "playlist[&2].artist",
"catalog_no": "playlist[&2].catalog_no",
"comp_work": "playlist[&2].comp_work",
"organ": "playlist[&2].organ",
"@show": "playlist[&2].show",
"@path": "playlist[&2].path"
}
}
}
}
}
]
答案 0 :(得分：0)
经过一些重做：
移位如下：
[
{
"operation": "shift",
"spec": {
"*": {
"Contents": {
"*": {
"@": "[&3].[&1]",
"@(2,filepath)": "[&3].[&1].path",
"@(2,program_number)": "[&3].[&1].show"
}
}
}
}
},
{
"operation": "shift",
"spec": {
"*": {
"*": {
"type": {
"listing": {
"@(2)": "[]"
}
}
}
}
}
},
{
"operation": "shift",
"spec": {
"*": {
"show": "playlist.[&1].&",
"path": "playlist.[&1].&",
"content": {
"*": {
"@": "playlist.[&3].&"
}
}
}
}
}
]