在上篇文章中，我们介绍了什么是Neo4j，什么是Cypher以及Neo4j的使用，今天我们学习一下如何使用Java操作Neo4j图数据库。

Cypher查询

在使用Java操作Neo4j之前，我们先了解一点，Cypher语句简单查询。
本文使用的是Neo4j自带的例子。
创建节点、属性和关系

CREATE (TheMatrix:Movie {title:'The Matrix', released:1999, tagline:'Welcome to the Real World'})
CREATE (Keanu:Person {name:'Keanu Reeves', born:1964})
CREATE (Carrie:Person {name:'Carrie-Anne Moss', born:1967})
CREATE (Laurence:Person {name:'Laurence Fishburne', born:1961})
CREATE (Hugo:Person {name:'Hugo Weaving', born:1960})
CREATE (LillyW:Person {name:'Lilly Wachowski', born:1967})
CREATE (LanaW:Person {name:'Lana Wachowski', born:1965})
CREATE (JoelS:Person {name:'Joel Silver', born:1952})
CREATE
  (Keanu)-[:ACTED_IN {roles:['Neo']}]->(TheMatrix),
  (Carrie)-[:ACTED_IN {roles:['Trinity']}]->(TheMatrix),
  (Laurence)-[:ACTED_IN {roles:['Morpheus']}]->(TheMatrix),
  (Hugo)-[:ACTED_IN {roles:['Agent Smith']}]->(TheMatrix),
  (LillyW)-[:DIRECTED]->(TheMatrix),
  (LanaW)-[:DIRECTED]->(TheMatrix),
  (JoelS)-[:PRODUCED]->(TheMatrix)

CREATE (Emil:Person {name:"Emil Eifrem", born:1978})
CREATE (Emil)-[:ACTED_IN {roles:["Emil"]}]->(TheMatrix)

CREATE (TheMatrixReloaded:Movie {title:'The Matrix Reloaded', released:2003, tagline:'Free your mind'})
CREATE
  (Keanu)-[:ACTED_IN {roles:['Neo']}]->(TheMatrixReloaded),
  (Carrie)-[:ACTED_IN {roles:['Trinity']}]->(TheMatrixReloaded),
  (Laurence)-[:ACTED_IN {roles:['Morpheus']}]->(TheMatrixReloaded),
  (Hugo)-[:ACTED_IN {roles:['Agent Smith']}]->(TheMatrixReloaded),
  (LillyW)-[:DIRECTED]->(TheMatrixReloaded),
  (LanaW)-[:DIRECTED]->(TheMatrixReloaded),
  (JoelS)-[:PRODUCED]->(TheMatrixReloaded)

CREATE (TheMatrixRevolutions:Movie {title:'The Matrix Revolutions', released:2003, tagline:'Everything that has a beginning has an end'})
CREATE
  (Keanu)-[:ACTED_IN {roles:['Neo']}]->(TheMatrixRevolutions),
  (Carrie)-[:ACTED_IN {roles:['Trinity']}]->(TheMatrixRevolutions),
  (Laurence)-[:ACTED_IN {roles:['Morpheus']}]->(TheMatrixRevolutions),
  (Hugo)-[:ACTED_IN {roles:['Agent Smith']}]->(TheMatrixRevolutions),
  (LillyW)-[:DIRECTED]->(TheMatrixRevolutions),
  (LanaW)-[:DIRECTED]->(TheMatrixRevolutions),
  (JoelS)-[:PRODUCED]->(TheMatrixRevolutions)

CREATE (TheDevilsAdvocate:Movie {title:"The Devil's Advocate", released:1997, tagline:'Evil has its winning ways'})
CREATE (Charlize:Person {name:'Charlize Theron', born:1975})
CREATE (Al:Person {name:'Al Pacino', born:1940})
CREATE (Taylor:Person {name:'Taylor Hackford', born:1944})
CREATE
  (Keanu)-[:ACTED_IN {roles:['Kevin Lomax']}]->(TheDevilsAdvocate),
  (Charlize)-[:ACTED_IN {roles:['Mary Ann Lomax']}]->(TheDevilsAdvocate),
  (Al)-[:ACTED_IN {roles:['John Milton']}]->(TheDevilsAdvocate),
  (Taylor)-[:DIRECTED]->(TheDevilsAdvocate)

CREATE (AFewGoodMen:Movie {title:"A Few Good Men", released:1992, tagline:"In the heart of the nation's capital, in a courthouse of the U.S. government, one man will stop at nothing to keep his honor, and one will stop at nothing to find the truth."})
CREATE (TomC:Person {name:'Tom Cruise', born:1962})
CREATE (JackN:Person {name:'Jack Nicholson', born:1937})
CREATE (DemiM:Person {name:'Demi Moore', born:1962})
CREATE (KevinB:Person {name:'Kevin Bacon', born:1958})
CREATE (KieferS:Person {name:'Kiefer Sutherland', born:1966})
CREATE (NoahW:Person {name:'Noah Wyle', born:1971})
CREATE (CubaG:Person {name:'Cuba Gooding Jr.', born:1968})
CREATE (KevinP:Person {name:'Kevin Pollak', born:1957})
CREATE (JTW:Person {name:'J.T. Walsh', born:1943})
CREATE (JamesM:Person {name:'James Marshall', born:1967})
CREATE (ChristopherG:Person {name:'Christopher Guest', born:1948})
CREATE (RobR:Person {name:'Rob Reiner', born:1947})
CREATE (AaronS:Person {name:'Aaron Sorkin', born:1961})
CREATE
  (TomC)-[:ACTED_IN {roles:['Lt. Daniel Kaffee']}]->(AFewGoodMen),
  (JackN)-[:ACTED_IN {roles:['Col. Nathan R. Jessup']}]->(AFewGoodMen),
  (DemiM)-[:ACTED_IN {roles:['Lt. Cdr. JoAnne Galloway']}]->(AFewGoodMen),
  (KevinB)-[:ACTED_IN {roles:['Capt. Jack Ross']}]->(AFewGoodMen),
  (KieferS)-[:ACTED_IN {roles:['Lt. Jonathan Kendrick']}]->(AFewGoodMen),
  (NoahW)-[:ACTED_IN {roles:['Cpl. Jeffrey Barnes']}]->(AFewGoodMen),
  (CubaG)-[:ACTED_IN {roles:['Cpl. Carl Hammaker']}]->(AFewGoodMen),
  (KevinP)-[:ACTED_IN {roles:['Lt. Sam Weinberg']}]->(AFewGoodMen),
  (JTW)-[:ACTED_IN {roles:['Lt. Col. Matthew Andrew Markinson']}]->(AFewGoodMen),
  (JamesM)-[:ACTED_IN {roles:['Pfc. Louden Downey']}]->(AFewGoodMen),
  (ChristopherG)-[:ACTED_IN {roles:['Dr. Stone']}]->(AFewGoodMen),
  (AaronS)-[:ACTED_IN {roles:['Man in Bar']}]->(AFewGoodMen),
  (RobR)-[:DIRECTED]->(AFewGoodMen),
  (AaronS)-[:WROTE]->(AFewGoodMen)

CREATE (TopGun:Movie {title:"Top Gun", released:1986, tagline:'I feel the need, the need for speed.'})
CREATE (KellyM:Person {name:'Kelly McGillis', born:1957})
CREATE (ValK:Person {name:'Val Kilmer', born:1959})
CREATE (AnthonyE:Person {name:'Anthony Edwards', born:1962})
CREATE (TomS:Person {name:'Tom Skerritt', born:1933})
CREATE (MegR:Person {name:'Meg Ryan', born:1961})
CREATE (TonyS:Person {name:'Tony Scott', born:1944})
CREATE (JimC:Person {name:'Jim Cash', born:1941})
CREATE
  (TomC)-[:ACTED_IN {roles:['Maverick']}]->(TopGun),
  (KellyM)-[:ACTED_IN {roles:['Charlie']}]->(TopGun),
  (ValK)-[:ACTED_IN {roles:['Iceman']}]->(TopGun),
  (AnthonyE)-[:ACTED_IN {roles:['Goose']}]->(TopGun),
  (TomS)-[:ACTED_IN {roles:['Viper']}]->(TopGun),
  (MegR)-[:ACTED_IN {roles:['Carole']}]->(TopGun),
  (TonyS)-[:DIRECTED]->(TopGun),
  (JimC)-[:WROTE]->(TopGun)

CREATE (JerryMaguire:Movie {title:'Jerry Maguire', released:2000, tagline:'The rest of his life begins now.'})
CREATE (ReneeZ:Person {name:'Renee Zellweger', born:1969})
CREATE (KellyP:Person {name:'Kelly Preston', born:1962})
CREATE (JerryO:Person {name:"Jerry O'Connell", born:1974})
CREATE (JayM:Person {name:'Jay Mohr', born:1970})
CREATE (BonnieH:Person {name:'Bonnie Hunt', born:1961})
CREATE (ReginaK:Person {name:'Regina King', born:1971})
CREATE (JonathanL:Person {name:'Jonathan Lipnicki', born:1996})
CREATE (CameronC:Person {name:'Cameron Crowe', born:1957})
CREATE
  (TomC)-[:ACTED_IN {roles:['Jerry Maguire']}]->(JerryMaguire),
  (CubaG)-[:ACTED_IN {roles:['Rod Tidwell']}]->(JerryMaguire),
  (ReneeZ)-[:ACTED_IN {roles:['Dorothy Boyd']}]->(JerryMaguire),
  (KellyP)-[:ACTED_IN {roles:['Avery Bishop']}]->(JerryMaguire),
  (JerryO)-[:ACTED_IN {roles:['Frank Cushman']}]->(JerryMaguire),
  (JayM)-[:ACTED_IN {roles:['Bob Sugar']}]->(JerryMaguire),
  (BonnieH)-[:ACTED_IN {roles:['Laurel Boyd']}]->(JerryMaguire),
  (ReginaK)-[:ACTED_IN {roles:['Marcee Tidwell']}]->(JerryMaguire),
  (JonathanL)-[:ACTED_IN {roles:['Ray Boyd']}]->(JerryMaguire),
  (CameronC)-[:DIRECTED]->(JerryMaguire),
  (CameronC)-[:PRODUCED]->(JerryMaguire),
  (CameronC)-[:WROTE]->(JerryMaguire)

CREATE (StandByMe:Movie {title:"Stand By Me", released:1986, tagline:"For some, it's the last real taste of innocence, and the first real taste of life. But for everyone, it's the time that memories are made of."})
CREATE (RiverP:Person {name:'River Phoenix', born:1970})
CREATE (CoreyF:Person {name:'Corey Feldman', born:1971})
CREATE (WilW:Person {name:'Wil Wheaton', born:1972})
CREATE (JohnC:Person {name:'John Cusack', born:1966})
CREATE (MarshallB:Person {name:'Marshall Bell', born:1942})
CREATE
  (WilW)-[:ACTED_IN {roles:['Gordie Lachance']}]->(StandByMe),
  (RiverP)-[:ACTED_IN {roles:['Chris Chambers']}]->(StandByMe),
  (JerryO)-[:ACTED_IN {roles:['Vern Tessio']}]->(StandByMe),
  (CoreyF)-[:ACTED_IN {roles:['Teddy Duchamp']}]->(StandByMe),
  (JohnC)-[:ACTED_IN {roles:['Denny Lachance']}]->(StandByMe),
  (KieferS)-[:ACTED_IN {roles:['Ace Merrill']}]->(StandByMe),
  (MarshallB)-[:ACTED_IN {roles:['Mr. Lachance']}]->(StandByMe),
  (RobR)-[:DIRECTED]->(StandByMe)

CREATE (AsGoodAsItGets:Movie {title:'As Good as It Gets', released:1997, tagline:'A comedy from the heart that goes for the throat.'})
CREATE (HelenH:Person {name:'Helen Hunt', born:1963})
CREATE (GregK:Person {name:'Greg Kinnear', born:1963})
CREATE (JamesB:Person {name:'James L. Brooks', born:1940})
CREATE
  (JackN)-[:ACTED_IN {roles:['Melvin Udall']}]->(AsGoodAsItGets),
  (HelenH)-[:ACTED_IN {roles:['Carol Connelly']}]->(AsGoodAsItGets),
  (GregK)-[:ACTED_IN {roles:['Simon Bishop']}]->(AsGoodAsItGets),
  (CubaG)-[:ACTED_IN {roles:['Frank Sachs']}]->(AsGoodAsItGets),
  (JamesB)-[:DIRECTED]->(AsGoodAsItGets)

CREATE (WhatDreamsMayCome:Movie {title:'What Dreams May Come', released:1998, tagline:'After life there is more. The end is just the beginning.'})
CREATE (AnnabellaS:Person {name:'Annabella Sciorra', born:1960})
CREATE (MaxS:Person {name:'Max von Sydow', born:1929})
CREATE (WernerH:Person {name:'Werner Herzog', born:1942})
CREATE (Robin:Person {name:'Robin Williams', born:1951})
CREATE (VincentW:Person {name:'Vincent Ward', born:1956})
CREATE
  (Robin)-[:ACTED_IN {roles:['Chris Nielsen']}]->(WhatDreamsMayCome),
  (CubaG)-[:ACTED_IN {roles:['Albert Lewis']}]->(WhatDreamsMayCome),
  (AnnabellaS)-[:ACTED_IN {roles:['Annie Collins-Nielsen']}]->(WhatDreamsMayCome),
  (MaxS)-[:ACTED_IN {roles:['The Tracker']}]->(WhatDreamsMayCome),
  (WernerH)-[:ACTED_IN {roles:['The Face']}]->(WhatDreamsMayCome),
  (VincentW)-[:DIRECTED]->(WhatDreamsMayCome)

CREATE (SnowFallingonCedars:Movie {title:'Snow Falling on Cedars', released:1999, tagline:'First loves last. Forever.'})
CREATE (EthanH:Person {name:'Ethan Hawke', born:1970})
CREATE (RickY:Person {name:'Rick Yune', born:1971})
CREATE (JamesC:Person {name:'James Cromwell', born:1940})
CREATE (ScottH:Person {name:'Scott Hicks', born:1953})
CREATE
  (EthanH)-[:ACTED_IN {roles:['Ishmael Chambers']}]->(SnowFallingonCedars),
  (RickY)-[:ACTED_IN {roles:['Kazuo Miyamoto']}]->(SnowFallingonCedars),
  (MaxS)-[:ACTED_IN {roles:['Nels Gudmundsson']}]->(SnowFallingonCedars),
  (JamesC)-[:ACTED_IN {roles:['Judge Fielding']}]->(SnowFallingonCedars),
  (ScottH)-[:DIRECTED]->(SnowFallingonCedars)

CREATE (YouveGotMail:Movie {title:"You've Got Mail", released:1998, tagline:'At odds in life... in love on-line.'})
CREATE (ParkerP:Person {name:'Parker Posey', born:1968})
CREATE (DaveC:Person {name:'Dave Chappelle', born:1973})
CREATE (SteveZ:Person {name:'Steve Zahn', born:1967})
CREATE (TomH:Person {name:'Tom Hanks', born:1956})
CREATE (NoraE:Person {name:'Nora Ephron', born:1941})
CREATE
  (TomH)-[:ACTED_IN {roles:['Joe Fox']}]->(YouveGotMail),
  (MegR)-[:ACTED_IN {roles:['Kathleen Kelly']}]->(YouveGotMail),
  (GregK)-[:ACTED_IN {roles:['Frank Navasky']}]->(YouveGotMail),
  (ParkerP)-[:ACTED_IN {roles:['Patricia Eden']}]->(YouveGotMail),
  (DaveC)-[:ACTED_IN {roles:['Kevin Jackson']}]->(YouveGotMail),
  (SteveZ)-[:ACTED_IN {roles:['George Pappas']}]->(YouveGotMail),
  (NoraE)-[:DIRECTED]->(YouveGotMail)

CREATE (SleeplessInSeattle:Movie {title:'Sleepless in Seattle', released:1993, tagline:'What if someone you never met, someone you never saw, someone you never knew was the only someone for you?'})
CREATE (RitaW:Person {name:'Rita Wilson', born:1956})
CREATE (BillPull:Person {name:'Bill Pullman', born:1953})
CREATE (VictorG:Person {name:'Victor Garber', born:1949})
CREATE (RosieO:Person {name:"Rosie O'Donnell", born:1962})
CREATE
  (TomH)-[:ACTED_IN {roles:['Sam Baldwin']}]->(SleeplessInSeattle),
  (MegR)-[:ACTED_IN {roles:['Annie Reed']}]->(SleeplessInSeattle),
  (RitaW)-[:ACTED_IN {roles:['Suzy']}]->(SleeplessInSeattle),
  (BillPull)-[:ACTED_IN {roles:['Walter']}]->(SleeplessInSeattle),
  (VictorG)-[:ACTED_IN {roles:['Greg']}]->(SleeplessInSeattle),
  (RosieO)-[:ACTED_IN {roles:['Becky']}]->(SleeplessInSeattle),
  (NoraE)-[:DIRECTED]->(SleeplessInSeattle)

CREATE (JoeVersustheVolcano:Movie {title:'Joe Versus the Volcano', released:1990, tagline:'A story of love, lava and burning desire.'})
CREATE (JohnS:Person {name:'John Patrick Stanley', born:1950})
CREATE (Nathan:Person {name:'Nathan Lane', born:1956})
CREATE
  (TomH)-[:ACTED_IN {roles:['Joe Banks']}]->(JoeVersustheVolcano),
  (MegR)-[:ACTED_IN {roles:['DeDe', 'Angelica Graynamore', 'Patricia Graynamore']}]->(JoeVersustheVolcano),
  (Nathan)-[:ACTED_IN {roles:['Baw']}]->(JoeVersustheVolcano),
  (JohnS)-[:DIRECTED]->(JoeVersustheVolcano)

CREATE (WhenHarryMetSally:Movie {title:'When Harry Met Sally', released:1998, tagline:'Can two friends sleep together and still love each other in the morning?'})
CREATE (BillyC:Person {name:'Billy Crystal', born:1948})
CREATE (CarrieF:Person {name:'Carrie Fisher', born:1956})
CREATE (BrunoK:Person {name:'Bruno Kirby', born:1949})
CREATE
  (BillyC)-[:ACTED_IN {roles:['Harry Burns']}]->(WhenHarryMetSally),
  (MegR)-[:ACTED_IN {roles:['Sally Albright']}]->(WhenHarryMetSally),
  (CarrieF)-[:ACTED_IN {roles:['Marie']}]->(WhenHarryMetSally),
  (BrunoK)-[:ACTED_IN {roles:['Jess']}]->(WhenHarryMetSally),
  (RobR)-[:DIRECTED]->(WhenHarryMetSally),
  (RobR)-[:PRODUCED]->(WhenHarryMetSally),
  (NoraE)-[:PRODUCED]->(WhenHarryMetSally),
  (NoraE)-[:WROTE]->(WhenHarryMetSally)

CREATE (ThatThingYouDo:Movie {title:'That Thing You Do', released:1996, tagline:'In every life there comes a time when that thing you dream becomes that thing you do'})
CREATE (LivT:Person {name:'Liv Tyler', born:1977})
CREATE
  (TomH)-[:ACTED_IN {roles:['Mr. White']}]->(ThatThingYouDo),
  (LivT)-[:ACTED_IN {roles:['Faye Dolan']}]->(ThatThingYouDo),
  (Charlize)-[:ACTED_IN {roles:['Tina']}]->(ThatThingYouDo),
  (TomH)-[:DIRECTED]->(ThatThingYouDo)

CREATE (TheReplacements:Movie {title:'The Replacements', released:2000, tagline:'Pain heals, Chicks dig scars... Glory lasts forever'})
CREATE (Brooke:Person {name:'Brooke Langton', born:1970})
CREATE (Gene:Person {name:'Gene Hackman', born:1930})
CREATE (Orlando:Person {name:'Orlando Jones', born:1968})
CREATE (Howard:Person {name:'Howard Deutch', born:1950})
CREATE
  (Keanu)-[:ACTED_IN {roles:['Shane Falco']}]->(TheReplacements),
  (Brooke)-[:ACTED_IN {roles:['Annabelle Farrell']}]->(TheReplacements),
  (Gene)-[:ACTED_IN {roles:['Jimmy McGinty']}]->(TheReplacements),
  (Orlando)-[:ACTED_IN {roles:['Clifford Franklin']}]->(TheReplacements),
  (Howard)-[:DIRECTED]->(TheReplacements)

CREATE (RescueDawn:Movie {title:'RescueDawn', released:2006, tagline:"Based on the extraordinary true story of one man's fight for freedom"})
CREATE (ChristianB:Person {name:'Christian Bale', born:1974})
CREATE (ZachG:Person {name:'Zach Grenier', born:1954})
CREATE
  (MarshallB)-[:ACTED_IN {roles:['Admiral']}]->(RescueDawn),
  (ChristianB)-[:ACTED_IN {roles:['Dieter Dengler']}]->(RescueDawn),
  (ZachG)-[:ACTED_IN {roles:['Squad Leader']}]->(RescueDawn),
  (SteveZ)-[:ACTED_IN {roles:['Duane']}]->(RescueDawn),
  (WernerH)-[:DIRECTED]->(RescueDawn)

CREATE (TheBirdcage:Movie {title:'The Birdcage', released:1996, tagline:'Come as you are'})
CREATE (MikeN:Person {name:'Mike Nichols', born:1931})
CREATE
  (Robin)-[:ACTED_IN {roles:['Armand Goldman']}]->(TheBirdcage),
  (Nathan)-[:ACTED_IN {roles:['Albert Goldman']}]->(TheBirdcage),
  (Gene)-[:ACTED_IN {roles:['Sen. Kevin Keeley']}]->(TheBirdcage),
  (MikeN)-[:DIRECTED]->(TheBirdcage)

CREATE (Unforgiven:Movie {title:'Unforgiven', released:1992, tagline:"It's a hell of a thing, killing a man"})
CREATE (RichardH:Person {name:'Richard Harris', born:1930})
CREATE (ClintE:Person {name:'Clint Eastwood', born:1930})
CREATE
  (RichardH)-[:ACTED_IN {roles:['English Bob']}]->(Unforgiven),
  (ClintE)-[:ACTED_IN {roles:['Bill Munny']}]->(Unforgiven),
  (Gene)-[:ACTED_IN {roles:['Little Bill Daggett']}]->(Unforgiven),
  (ClintE)-[:DIRECTED]->(Unforgiven)

CREATE (JohnnyMnemonic:Movie {title:'Johnny Mnemonic', released:1995, tagline:'The hottest data on earth. In the coolest head in town'})
CREATE (Takeshi:Person {name:'Takeshi Kitano', born:1947})
CREATE (Dina:Person {name:'Dina Meyer', born:1968})
CREATE (IceT:Person {name:'Ice-T', born:1958})
CREATE (RobertL:Person {name:'Robert Longo', born:1953})
CREATE
  (Keanu)-[:ACTED_IN {roles:['Johnny Mnemonic']}]->(JohnnyMnemonic),
  (Takeshi)-[:ACTED_IN {roles:['Takahashi']}]->(JohnnyMnemonic),
  (Dina)-[:ACTED_IN {roles:['Jane']}]->(JohnnyMnemonic),
  (IceT)-[:ACTED_IN {roles:['J-Bone']}]->(JohnnyMnemonic),
  (RobertL)-[:DIRECTED]->(JohnnyMnemonic)

CREATE (CloudAtlas:Movie {title:'Cloud Atlas', released:2012, tagline:'Everything is connected'})
CREATE (HalleB:Person {name:'Halle Berry', born:1966})
CREATE (JimB:Person {name:'Jim Broadbent', born:1949})
CREATE (TomT:Person {name:'Tom Tykwer', born:1965})
CREATE (DavidMitchell:Person {name:'David Mitchell', born:1969})
CREATE (StefanArndt:Person {name:'Stefan Arndt', born:1961})
CREATE
  (TomH)-[:ACTED_IN {roles:['Zachry', 'Dr. Henry Goose', 'Isaac Sachs', 'Dermot Hoggins']}]->(CloudAtlas),
  (Hugo)-[:ACTED_IN {roles:['Bill Smoke', 'Haskell Moore', 'Tadeusz Kesselring', 'Nurse Noakes', 'Boardman Mephi', 'Old Georgie']}]->(CloudAtlas),
  (HalleB)-[:ACTED_IN {roles:['Luisa Rey', 'Jocasta Ayrs', 'Ovid', 'Meronym']}]->(CloudAtlas),
  (JimB)-[:ACTED_IN {roles:['Vyvyan Ayrs', 'Captain Molyneux', 'Timothy Cavendish']}]->(CloudAtlas),
  (TomT)-[:DIRECTED]->(CloudAtlas),
  (LillyW)-[:DIRECTED]->(CloudAtlas),
  (LanaW)-[:DIRECTED]->(CloudAtlas),
  (DavidMitchell)-[:WROTE]->(CloudAtlas),
  (StefanArndt)-[:PRODUCED]->(CloudAtlas)

CREATE (TheDaVinciCode:Movie {title:'The Da Vinci Code', released:2006, tagline:'Break The Codes'})
CREATE (IanM:Person {name:'Ian McKellen', born:1939})
CREATE (AudreyT:Person {name:'Audrey Tautou', born:1976})
CREATE (PaulB:Person {name:'Paul Bettany', born:1971})
CREATE (RonH:Person {name:'Ron Howard', born:1954})
CREATE
  (TomH)-[:ACTED_IN {roles:['Dr. Robert Langdon']}]->(TheDaVinciCode),
  (IanM)-[:ACTED_IN {roles:['Sir Leight Teabing']}]->(TheDaVinciCode),
  (AudreyT)-[:ACTED_IN {roles:['Sophie Neveu']}]->(TheDaVinciCode),
  (PaulB)-[:ACTED_IN {roles:['Silas']}]->(TheDaVinciCode),
  (RonH)-[:DIRECTED]->(TheDaVinciCode)

CREATE (VforVendetta:Movie {title:'V for Vendetta', released:2006, tagline:'Freedom! Forever!'})
CREATE (NatalieP:Person {name:'Natalie Portman', born:1981})
CREATE (StephenR:Person {name:'Stephen Rea', born:1946})
CREATE (JohnH:Person {name:'John Hurt', born:1940})
CREATE (BenM:Person {name: 'Ben Miles', born:1967})
CREATE
  (Hugo)-[:ACTED_IN {roles:['V']}]->(VforVendetta),
  (NatalieP)-[:ACTED_IN {roles:['Evey Hammond']}]->(VforVendetta),
  (StephenR)-[:ACTED_IN {roles:['Eric Finch']}]->(VforVendetta),
  (JohnH)-[:ACTED_IN {roles:['High Chancellor Adam Sutler']}]->(VforVendetta),
  (BenM)-[:ACTED_IN {roles:['Dascomb']}]->(VforVendetta),
  (JamesM)-[:DIRECTED]->(VforVendetta),
  (LillyW)-[:PRODUCED]->(VforVendetta),
  (LanaW)-[:PRODUCED]->(VforVendetta),
  (JoelS)-[:PRODUCED]->(VforVendetta),
  (LillyW)-[:WROTE]->(VforVendetta),
  (LanaW)-[:WROTE]->(VforVendetta)

CREATE (SpeedRacer:Movie {title:'Speed Racer', released:2008, tagline:'Speed has no limits'})
CREATE (EmileH:Person {name:'Emile Hirsch', born:1985})
CREATE (JohnG:Person {name:'John Goodman', born:1960})
CREATE (SusanS:Person {name:'Susan Sarandon', born:1946})
CREATE (MatthewF:Person {name:'Matthew Fox', born:1966})
CREATE (ChristinaR:Person {name:'Christina Ricci', born:1980})
CREATE (Rain:Person {name:'Rain', born:1982})
CREATE
  (EmileH)-[:ACTED_IN {roles:['Speed Racer']}]->(SpeedRacer),
  (JohnG)-[:ACTED_IN {roles:['Pops']}]->(SpeedRacer),
  (SusanS)-[:ACTED_IN {roles:['Mom']}]->(SpeedRacer),
  (MatthewF)-[:ACTED_IN {roles:['Racer X']}]->(SpeedRacer),
  (ChristinaR)-[:ACTED_IN {roles:['Trixie']}]->(SpeedRacer),
  (Rain)-[:ACTED_IN {roles:['Taejo Togokahn']}]->(SpeedRacer),
  (BenM)-[:ACTED_IN {roles:['Cass Jones']}]->(SpeedRacer),
  (LillyW)-[:DIRECTED]->(SpeedRacer),
  (LanaW)-[:DIRECTED]->(SpeedRacer),
  (LillyW)-[:WROTE]->(SpeedRacer),
  (LanaW)-[:WROTE]->(SpeedRacer),
  (JoelS)-[:PRODUCED]->(SpeedRacer)

CREATE (NinjaAssassin:Movie {title:'Ninja Assassin', released:2009, tagline:'Prepare to enter a secret world of assassins'})
CREATE (NaomieH:Person {name:'Naomie Harris'})
CREATE
  (Rain)-[:ACTED_IN {roles:['Raizo']}]->(NinjaAssassin),
  (NaomieH)-[:ACTED_IN {roles:['Mika Coretti']}]->(NinjaAssassin),
  (RickY)-[:ACTED_IN {roles:['Takeshi']}]->(NinjaAssassin),
  (BenM)-[:ACTED_IN {roles:['Ryan Maslow']}]->(NinjaAssassin),
  (JamesM)-[:DIRECTED]->(NinjaAssassin),
  (LillyW)-[:PRODUCED]->(NinjaAssassin),
  (LanaW)-[:PRODUCED]->(NinjaAssassin),
  (JoelS)-[:PRODUCED]->(NinjaAssassin)

CREATE (TheGreenMile:Movie {title:'The Green Mile', released:1999, tagline:"Walk a mile you'll never forget."})
CREATE (MichaelD:Person {name:'Michael Clarke Duncan', born:1957})
CREATE (DavidM:Person {name:'David Morse', born:1953})
CREATE (SamR:Person {name:'Sam Rockwell', born:1968})
CREATE (GaryS:Person {name:'Gary Sinise', born:1955})
CREATE (PatriciaC:Person {name:'Patricia Clarkson', born:1959})
CREATE (FrankD:Person {name:'Frank Darabont', born:1959})
CREATE
  (TomH)-[:ACTED_IN {roles:['Paul Edgecomb']}]->(TheGreenMile),
  (MichaelD)-[:ACTED_IN {roles:['John Coffey']}]->(TheGreenMile),
  (DavidM)-[:ACTED_IN {roles:['Brutus "Brutal" Howell']}]->(TheGreenMile),
  (BonnieH)-[:ACTED_IN {roles:['Jan Edgecomb']}]->(TheGreenMile),
  (JamesC)-[:ACTED_IN {roles:['Warden Hal Moores']}]->(TheGreenMile),
  (SamR)-[:ACTED_IN {roles:['"Wild Bill" Wharton']}]->(TheGreenMile),
  (GaryS)-[:ACTED_IN {roles:['Burt Hammersmith']}]->(TheGreenMile),
  (PatriciaC)-[:ACTED_IN {roles:['Melinda Moores']}]->(TheGreenMile),
  (FrankD)-[:DIRECTED]->(TheGreenMile)

CREATE (FrostNixon:Movie {title:'Frost/Nixon', released:2008, tagline:'400 million people were waiting for the truth.'})
CREATE (FrankL:Person {name:'Frank Langella', born:1938})
CREATE (MichaelS:Person {name:'Michael Sheen', born:1969})
CREATE (OliverP:Person {name:'Oliver Platt', born:1960})
CREATE
  (FrankL)-[:ACTED_IN {roles:['Richard Nixon']}]->(FrostNixon),
  (MichaelS)-[:ACTED_IN {roles:['David Frost']}]->(FrostNixon),
  (KevinB)-[:ACTED_IN {roles:['Jack Brennan']}]->(FrostNixon),
  (OliverP)-[:ACTED_IN {roles:['Bob Zelnick']}]->(FrostNixon),
  (SamR)-[:ACTED_IN {roles:['James Reston, Jr.']}]->(FrostNixon),
  (RonH)-[:DIRECTED]->(FrostNixon)

CREATE (Hoffa:Movie {title:'Hoffa', released:1992, tagline:"He didn't want law. He wanted justice."})
CREATE (DannyD:Person {name:'Danny DeVito', born:1944})
CREATE (JohnR:Person {name:'John C. Reilly', born:1965})
CREATE
  (JackN)-[:ACTED_IN {roles:['Hoffa']}]->(Hoffa),
  (DannyD)-[:ACTED_IN {roles:['Robert "Bobby" Ciaro']}]->(Hoffa),
  (JTW)-[:ACTED_IN {roles:['Frank Fitzsimmons']}]->(Hoffa),
  (JohnR)-[:ACTED_IN {roles:['Peter "Pete" Connelly']}]->(Hoffa),
  (DannyD)-[:DIRECTED]->(Hoffa)

CREATE (Apollo13:Movie {title:'Apollo 13', released:1995, tagline:'Houston, we have a problem.'})
CREATE (EdH:Person {name:'Ed Harris', born:1950})
CREATE (BillPax:Person {name:'Bill Paxton', born:1955})
CREATE
  (TomH)-[:ACTED_IN {roles:['Jim Lovell']}]->(Apollo13),
  (KevinB)-[:ACTED_IN {roles:['Jack Swigert']}]->(Apollo13),
  (EdH)-[:ACTED_IN {roles:['Gene Kranz']}]->(Apollo13),
  (BillPax)-[:ACTED_IN {roles:['Fred Haise']}]->(Apollo13),
  (GaryS)-[:ACTED_IN {roles:['Ken Mattingly']}]->(Apollo13),
  (RonH)-[:DIRECTED]->(Apollo13)

CREATE (Twister:Movie {title:'Twister', released:1996, tagline:"Don't Breathe. Don't Look Back."})
CREATE (PhilipH:Person {name:'Philip Seymour Hoffman', born:1967})
CREATE (JanB:Person {name:'Jan de Bont', born:1943})
CREATE
  (BillPax)-[:ACTED_IN {roles:['Bill Harding']}]->(Twister),
  (HelenH)-[:ACTED_IN {roles:['Dr. Jo Harding']}]->(Twister),
  (ZachG)-[:ACTED_IN {roles:['Eddie']}]->(Twister),
  (PhilipH)-[:ACTED_IN {roles:['Dustin "Dusty" Davis']}]->(Twister),
  (JanB)-[:DIRECTED]->(Twister)

CREATE (CastAway:Movie {title:'Cast Away', released:2000, tagline:'At the edge of the world, his journey begins.'})
CREATE (RobertZ:Person {name:'Robert Zemeckis', born:1951})
CREATE
  (TomH)-[:ACTED_IN {roles:['Chuck Noland']}]->(CastAway),
  (HelenH)-[:ACTED_IN {roles:['Kelly Frears']}]->(CastAway),
  (RobertZ)-[:DIRECTED]->(CastAway)

CREATE (OneFlewOvertheCuckoosNest:Movie {title:"One Flew Over the Cuckoo's Nest", released:1975, tagline:"If he's crazy, what does that make you?"})
CREATE (MilosF:Person {name:'Milos Forman', born:1932})
CREATE
  (JackN)-[:ACTED_IN {roles:['Randle McMurphy']}]->(OneFlewOvertheCuckoosNest),
  (DannyD)-[:ACTED_IN {roles:['Martini']}]->(OneFlewOvertheCuckoosNest),
  (MilosF)-[:DIRECTED]->(OneFlewOvertheCuckoosNest)

CREATE (SomethingsGottaGive:Movie {title:"Something's Gotta Give", released:2003})
CREATE (DianeK:Person {name:'Diane Keaton', born:1946})
CREATE (NancyM:Person {name:'Nancy Meyers', born:1949})
CREATE
  (JackN)-[:ACTED_IN {roles:['Harry Sanborn']}]->(SomethingsGottaGive),
  (DianeK)-[:ACTED_IN {roles:['Erica Barry']}]->(SomethingsGottaGive),
  (Keanu)-[:ACTED_IN {roles:['Julian Mercer']}]->(SomethingsGottaGive),
  (NancyM)-[:DIRECTED]->(SomethingsGottaGive),
  (NancyM)-[:PRODUCED]->(SomethingsGottaGive),
  (NancyM)-[:WROTE]->(SomethingsGottaGive)

CREATE (BicentennialMan:Movie {title:'Bicentennial Man', released:1999, tagline:"One robot's 200 year journey to become an ordinary man."})
CREATE (ChrisC:Person {name:'Chris Columbus', born:1958})
CREATE
  (Robin)-[:ACTED_IN {roles:['Andrew Marin']}]->(BicentennialMan),
  (OliverP)-[:ACTED_IN {roles:['Rupert Burns']}]->(BicentennialMan),
  (ChrisC)-[:DIRECTED]->(BicentennialMan)

CREATE (CharlieWilsonsWar:Movie {title:"Charlie Wilson's War", released:2007, tagline:"A stiff drink. A little mascara. A lot of nerve. Who said they couldn't bring down the Soviet empire."})
CREATE (JuliaR:Person {name:'Julia Roberts', born:1967})
CREATE
  (TomH)-[:ACTED_IN {roles:['Rep. Charlie Wilson']}]->(CharlieWilsonsWar),
  (JuliaR)-[:ACTED_IN {roles:['Joanne Herring']}]->(CharlieWilsonsWar),
  (PhilipH)-[:ACTED_IN {roles:['Gust Avrakotos']}]->(CharlieWilsonsWar),
  (MikeN)-[:DIRECTED]->(CharlieWilsonsWar)

CREATE (ThePolarExpress:Movie {title:'The Polar Express', released:2004, tagline:'This Holiday Season… Believe'})
CREATE
  (TomH)-[:ACTED_IN {roles:['Hero Boy', 'Father', 'Conductor', 'Hobo', 'Scrooge', 'Santa Claus']}]->(ThePolarExpress),
  (RobertZ)-[:DIRECTED]->(ThePolarExpress)

CREATE (ALeagueofTheirOwn:Movie {title:'A League of Their Own', released:1992, tagline:'Once in a lifetime you get a chance to do something different.'})
CREATE (Madonna:Person {name:'Madonna', born:1954})
CREATE (GeenaD:Person {name:'Geena Davis', born:1956})
CREATE (LoriP:Person {name:'Lori Petty', born:1963})
CREATE (PennyM:Person {name:'Penny Marshall', born:1943})
CREATE
  (TomH)-[:ACTED_IN {roles:['Jimmy Dugan']}]->(ALeagueofTheirOwn),
  (GeenaD)-[:ACTED_IN {roles:['Dottie Hinson']}]->(ALeagueofTheirOwn),
  (LoriP)-[:ACTED_IN {roles:['Kit Keller']}]->(ALeagueofTheirOwn),
  (RosieO)-[:ACTED_IN {roles:['Doris Murphy']}]->(ALeagueofTheirOwn),
  (Madonna)-[:ACTED_IN {roles:['"All the Way" Mae Mordabito']}]->(ALeagueofTheirOwn),
  (BillPax)-[:ACTED_IN {roles:['Bob Hinson']}]->(ALeagueofTheirOwn),
  (PennyM)-[:DIRECTED]->(ALeagueofTheirOwn)

CREATE (PaulBlythe:Person {name:'Paul Blythe'})
CREATE (AngelaScope:Person {name:'Angela Scope'})
CREATE (JessicaThompson:Person {name:'Jessica Thompson'})
CREATE (JamesThompson:Person {name:'James Thompson'})

CREATE
  (JamesThompson)-[:FOLLOWS]->(JessicaThompson),
  (AngelaScope)-[:FOLLOWS]->(JessicaThompson),
  (PaulBlythe)-[:FOLLOWS]->(AngelaScope)

CREATE
  (JessicaThompson)-[:REVIEWED {summary:'An amazing journey', rating:95}]->(CloudAtlas),
  (JessicaThompson)-[:REVIEWED {summary:'Silly, but fun', rating:65}]->(TheReplacements),
  (JamesThompson)-[:REVIEWED {summary:'The coolest football movie ever', rating:100}]->(TheReplacements),
  (AngelaScope)-[:REVIEWED {summary:'Pretty funny at times', rating:62}]->(TheReplacements),
  (JessicaThompson)-[:REVIEWED {summary:'Dark, but compelling', rating:85}]->(Unforgiven),
  (JessicaThompson)-[:REVIEWED {summary:"Slapstick redeemed only by the Robin Williams and Gene Hackman's stellar performances", rating:45}]->(TheBirdcage),
  (JessicaThompson)-[:REVIEWED {summary:'A solid romp', rating:68}]->(TheDaVinciCode),
  (JamesThompson)-[:REVIEWED {summary:'Fun, but a little far fetched', rating:65}]->(TheDaVinciCode),
  (JessicaThompson)-[:REVIEWED {summary:'You had me at Jerry', rating:92}]->(JerryMaguire)

WITH TomH as a
MATCH (a)-[:ACTED_IN]->(m)<-[:DIRECTED]-(d) RETURN a,m,d LIMIT 10
;

此时我们看到，已经创建了Movie、Person两个标签，共171个节点。

# 创建一个标签为Movie的节点Unforgiven，节点有三个属性：title，released，tagline
CREATE (Unforgiven:Movie {title:'Unforgiven', released:1992, tagline:"It's a hell of a thing, killing a man"})
# 创建一个标签为Person 的节点RichardH，节点有两个属性：name，born
CREATE (RichardH:Person {name:'Richard Harris', born:1930})
# 为节点Unforgiven，RichardH建立关系ACTED_IN,关系有一个属性roles
CREATE (RichardH)-[:ACTED_IN {roles:['English Bob']}]->(Unforgiven)
#查找节点属性的name值为Richard Harris的节点
MATCH (n) where n.name='Richard Harris' RETURN n
#也可以更精确一点
MATCH (n:Person) where n.name='Richard Harris' RETURN n
#删除节点属性的name值为Richard Harris的节点,此时该节点如果有关系，无法删除
MATCH (n) where n.name='Richard Harris' delete n
# 此时我们可以使用detach delete执行，可以将该节点，以及关联的关系一起删除
MATCH (n:Person) where n.name='Richard Harris' detach delete n

Java操作Neo4j图数据库

在开发过程中我们不可能，直接通过CQL语句在网页上操作图数据库，我们必须要使用编程语言操作图数据库，Neo4j支持多种语言，比如常用的Java、python、C#等，今天我们就使用Java操作Neo4j

创建节点

在上一篇文章中我们知道了，在CQL语言中，可以使用create来创建一个节点，但是开发中我们也可以使用Java更加方便的创建一个节点。

1. 创建一个实体类
2. 在实体类中建好节点的属性
3. 在dao中调用save方法保存节点

@Data
@Node("role")
public class Role implements Serializable {
    @Id
    @GeneratedValue
    private Long id;
    @Property
    private String name;
}

@RestController
@RequestMapping("test")
public class TestController {
    @Autowired
    RoleDAO roleDAO;

    @RequestMapping("create")
    public void create(){
        Role role = new Role();
        role.setName("主角");
        roleDAO.save(role);
    }
}

spring:
  data:
    neo4j:
      username: neo4j
      password: yangyu123456
      uri: bolt://127.0.0.1:7687

  <dependency>
     <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-data-neo4j</artifactId>
      <version>3.1.0</version>
  </dependency>
  <dependency>
      <groupId>org.projectlombok</groupId>
      <artifactId>lombok</artifactId>
  </dependency>

可以看到，我们已经创建了一个Role标签，并且创建了一个节点。当然在DAO中还支持CQL的语句查询

查询节点

同样的在Java中我们也可以查询需要的数据，可以通过SpringBoot封装的find方法，也可以在DAO中，使用@Query注解进行查询

public interface RoleDAO extends Neo4jRepository<Role,Long> {
    @Query("match(n:Role) where n.name={name} return n")
    Role serach(@Param("name") String name);
}

@RestController
@RequestMapping("test")
public class TestController {
    @Autowired
    RoleDAO roleDAO;
    @RequestMapping("search")
    public void search(){
        Role role = roleDAO.serach("主角");
        System.out.println(role);
    }
}