apoc.import.graphml

过程

apoc.import.file.enabled=true

apoc.import.file.use_neo4j_config=false

CALL apoc.import.graphml(`binaryGzipByteArray`,  {compression: 'GZIP'})

CALL apoc.import.graphml(`binaryFileNotCompressed`,  {compression: 'NONE'})

WITH apoc.util.compress('<?xml version="1.0" encoding="UTF-8"?>
<graphml xmlns="http://graphml.graphdrawing.org/xmlns" xmlns:xsi="https://w3org.cn/2001/XMLSchema-instance" xsi:schemaLocation="http://graphml.graphdrawing.org/xmlns http://graphml.graphdrawing.org/xmlns/1.0/graphml.xsd">
<graph id="G" edgedefault="directed">
<node id="n0"> <data key="labels">:FOO</data><data key="name">foo</data> </node>
<node id="n1"> <data key="labels">:BAR</data><data key="name">bar</data> <data key="kids">[a,b,c]</data> </node>
<edge id="e0" source="n0" target="n1"> <data key="label">:EDGE_LABEL</data> <data key="name">foo</data> </edge>
</graph>
</graphml>', {compression: 'DEFLATE'}) as xmlCompressed
CALL apoc.import.graphml(xmlCompressed,  {compression: 'DEFLATE'})
YIELD source, format, nodes, relationships, properties
RETURN source, format, nodes, relationships, properties

CREATE (f:Foo:Foo2:Foo0 {name:'foo', born:Date('2018-10-10'), place:point({ longitude: 56.7, latitude: 12.78, height: 100 })})-[:KNOWS]->(b:Bar {name:'bar',age:42, place:point({ longitude: 56.7, latitude: 12.78})});
CREATE (:Foo {name: 'zzz'})-[:KNOWS]->(:Bar {age: 0});
CREATE (:Foo {name: 'aaa'})-[:KNOWS {id: 1}]->(:Bar {age: 666});

// Foo nodes
call apoc.export.graphml.query('MATCH (start:Foo)-[:KNOWS]->(:Bar) RETURN start', 'queryNodesFoo.graphml', {useTypes: true});

// Bar nodes
call apoc.export.graphml.query('MATCH (:Foo)-[:KNOWS]->(end:Bar) RETURN end', 'queryNodesBar.graphml', {useTypes: true});

// KNOWS rels
MATCH (:Foo)-[rel:KNOWS]->(:Bar)
WITH collect(rel) as rels
call apoc.export.graphml.data([], rels, 'queryRelationship.graphml', {useTypes: true})
YIELD nodes, relationships RETURN nodes, relationships;

<?xml version='1.0' encoding='UTF-8'?>
<graphml xmlns="http://graphml.graphdrawing.org/xmlns" xmlns:xsi="https://w3org.cn/2001/XMLSchema-instance" xsi:schemaLocation="http://graphml.graphdrawing.org/xmlns http://graphml.graphdrawing.org/xmlns/1.0/graphml.xsd">
<key id="born" for="node" attr.name="born" attr.type="string"/>
<key id="name" for="node" attr.name="name" attr.type="string"/>
<key id="place" for="node" attr.name="place" attr.type="string"/>
<key id="labels" for="node" attr.name="labels" attr.type="string"/>
<graph id="G" edgedefault="directed">
<node id="n0" labels=":Foo:Foo0:Foo2"><data key="labels">:Foo:Foo0:Foo2</data><data key="born">2018-10-10</data><data key="name">foo</data><data key="place">{"crs":"wgs-84-3d","latitude":12.78,"longitude":56.7,"height":100.0}</data></node>
<node id="n3" labels=":Foo"><data key="labels">:Foo</data><data key="name">zzz</data></node>
<node id="n5" labels=":Foo"><data key="labels">:Foo</data><data key="name">aaa</data></node>
</graph>
</graphml>

<?xml version='1.0' encoding='UTF-8'?>
<graphml xmlns="http://graphml.graphdrawing.org/xmlns" xmlns:xsi="https://w3org.cn/2001/XMLSchema-instance" xsi:schemaLocation="http://graphml.graphdrawing.org/xmlns http://graphml.graphdrawing.org/xmlns/1.0/graphml.xsd">
<key id="name" for="node" attr.name="name" attr.type="string"/>
<key id="place" for="node" attr.name="place" attr.type="string"/>
<key id="age" for="node" attr.name="age" attr.type="long"/>
<key id="labels" for="node" attr.name="labels" attr.type="string"/>
<graph id="G" edgedefault="directed">
<node id="n1" labels=":Bar"><data key="labels">:Bar</data><data key="name">bar</data><data key="age">42</data><data key="place">{"crs":"wgs-84","latitude":12.78,"longitude":56.7,"height":null}</data></node>
<node id="n4" labels=":Bar"><data key="labels">:Bar</data><data key="age">0</data></node>
<node id="n6" labels=":Bar"><data key="labels">:Bar</data><data key="age">666</data></node>
</graph>
</graphml>

<?xml version='1.0' encoding='UTF-8'?>
<graphml xmlns="http://graphml.graphdrawing.org/xmlns" xmlns:xsi="https://w3org.cn/2001/XMLSchema-instance" xsi:schemaLocation="http://graphml.graphdrawing.org/xmlns http://graphml.graphdrawing.org/xmlns/1.0/graphml.xsd">
<key id="label" for="edge" attr.name="label" attr.type="string"/>
<key id="id" for="edge" attr.name="id" attr.type="long"/>
<graph id="G" edgedefault="directed">
<edge id="e0" source="n0" target="n1" label="KNOWS"><data key="label">KNOWS</data></edge>
<edge id="e1" source="n3" target="n4" label="KNOWS"><data key="label">KNOWS</data></edge>
<edge id="e2" source="n5" target="n6" label="KNOWS"><data key="label">KNOWS</data><data key="id">1</data></edge>
</graph>
</graphml>

CALL apoc.import.graphml('queryNodesFoo.graphml', {readLabels: true, storeNodeIds: true});
CALL apoc.import.graphml('queryNodesBar.graphml', {readLabels: true, storeNodeIds: true});
CALL apoc.import.graphml('queryRelationship.graphml', {readLabels: true, source: {label: 'Foo'}, target: {label: 'Bar'}});

<?xml version="1.0" encoding="UTF-8"?>
                <graphml xmlns="http://graphml.graphdrawing.org/xmlns"
                         xmlns:xsi="https://w3org.cn/2001/XMLSchema-instance"
                         xsi:schemaLocation="http://graphml.graphdrawing.org/xmlns
                         http://graphml.graphdrawing.org/xmlns/1.0/graphml.xsd">
                  <key id="age" for="node" attr.name="age" attr.type="long"/>
                  <key id="height" for="node" attr.name="height" attr.type="int"/>
                  <key id="weight" for="node" attr.name="weight" attr.type="double"/>
                  <key id="shoeSize" for="node" attr.name="shoeSize" attr.type="float"/>
                  <graph id="G" edgedefault="directed">
                    <node id="n0">
                      <data key="age">27</data>
                      <data key="height">175</data>
                      <data key="weight">71.2</data>
                      <data key="shoeSize">43.5</data>
                    </node>
                    <node id="n1">
                      <data key="age">nan</data>
                      <data key="height">nan</data>
                      <data key="weight">nan</data>
                      <data key="shoeSize">nan</data>
                    </node>
                </graph>
                </graphml>

CALL apoc.import.graphml('nanExample.graphml',{readLabels: true, storeNodeIds:true})

MATCH (a)
WITH a.age AS age, a.height AS height, a.weight AS weight, a.shoeSize AS shoeSize
RETURN
  age, valueType(age) AS ageType,
  height, valueType(height) AS heightType,
  weight, valueType(weight) AS weightType,
  shoeSize, valueType(shoeSize) AS shoeSizeType