兩個節點實體 actor , movie ， 一個關係實體   actor in movies (roles)

前提， NEO4J 必須配置 

1.neo4j依賴
spring-data-neo4j
jackson-jsog

2.config resources/ogm.properties

actor.java

package com.test.data.domain;
import com.fasterxml.jackson.annotation.JsonIdentityInfo;
import com.voodoodyne.jackson.jsog.JSOGGenerator;
import 
 
org.neo4j.ogm.annotation.GraphId;
import org.neo4j.ogm.annotation.NodeEntity;
import org.neo4j.ogm.annotation.typeconversion.DateLong;
import org.springframework.format.annotation.DateTimeFormat;
import java.util.Date;
@JsonIdentityInfo(generator=JSOGGenerator.class)//防止查詢資料的時候引發遞迴效應
@NodeEntity //節點實體
 
public class Actor {
    @GraphId //節點唯一標識 ， 系統自動生成
Long id;
    private String name;
    private int sex;
@DateLong
    @DateTimeFormat(pattern = "yyyy-MM-dd HH:mm:ss")//neo4j 沒有日期格式資料型別，用註解進行轉換
private Date born;
    public Actor() { }

    public Long getId() {
        return id;
}

    public void setId
 
(Long id) {
        this.id = id;
}

    public String getName() {
        return name;
}

    public void setName(String name) {
        this.name = name;
}

    public int getSex() {
        return sex;
}

    public void setSex(int sex) {
        this.sex = sex;
}

    public Date getBorn() {
        return born;
}

    public void setBorn(Date born) {
        this.born = born;
}
}

movie.java；

package com.test.data.domain;
import com.fasterxml.jackson.annotation.JsonIdentityInfo;
import com.voodoodyne.jackson.jsog.JSOGGenerator;
import org.neo4j.ogm.annotation.GraphId;
import org.neo4j.ogm.annotation.NodeEntity;
import org.neo4j.ogm.annotation.Relationship;
import org.neo4j.ogm.annotation.typeconversion.DateLong;
import org.springframework.format.annotation.DateTimeFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
@JsonIdentityInfo(generator=JSOGGenerator.class)
@NodeEntity
public class Movie {
    @GraphId
Long id;
    private String name;
    private String photo;
@DateLong
    @DateTimeFormat(pattern = "yyyy-MM-dd HH:mm:ss")
    private Date createDate;
@Relationship(type="扮演", direction = Relationship.INCOMING)
    List<Role> roles = new ArrayList<>();//關係列表，泛型 指只能存放所有角色的集合
public Role addRole(Actor actor, String name){ //增加關係的方法
Role role = new Role(actor,this,name);
        this.roles.add(role);
        return role;
}

    public Movie() { }

    public Long getId() {
        return id;
}

    public void setId(Long id) {
        this.id = id;
}

    public List<Role> getRoles() {
        return roles;
}

    public void setRoles(List<Role> roles) {
        this.roles = roles;
}

    public String getName() {
        return name;
}

    public void setName(String name) {
        this.name = name;
}

    public String getPhoto() {
        return photo;
}

    public void setPhoto(String photo) {
        this.photo = photo;
}

    public Date getCreateDate() {
        return createDate;
}

    public void setCreateDate(Date createDate) {
        this.createDate = createDate;
}
}

Role.java

package com.test.data.domain;
import com.fasterxml.jackson.annotation.JsonIdentityInfo;
import com.voodoodyne.jackson.jsog.JSOGGenerator;
import org.neo4j.ogm.annotation.EndNode;
import org.neo4j.ogm.annotation.GraphId;
import org.neo4j.ogm.annotation.RelationshipEntity;
import org.neo4j.ogm.annotation.StartNode;
@JsonIdentityInfo(generator=JSOGGenerator.class)
@RelationshipEntity(type = "扮演")
public class Role {
    @GraphId
Long id;
String name;
@StartNode //開始節點
Actor actor;
@EndNode //結束節點
Movie movie;
    public Role() {  //空的建構函式
}

    public Role(Actor actor, Movie movie, String name) {//建構函式的過載
this.actor = actor;
        this.movie = movie;
        this.name = name;
}

    public Long getId() {
        return id;
}

    public void setId(Long id) {
        this.id = id;
}

    public String getName() {
        return name;
}

    public void setName(String name) {
        this.name = name;
}

    public Actor getActor() {
        return actor;
}

    public Movie getMovie() {
        return movie;
}

}

分頁程式碼粗略一看不懂，  結合前端再研究：

package com.test.data.service;
import org.neo4j.ogm.cypher.Filters;
import org.neo4j.ogm.cypher.query.Pagination;
import org.neo4j.ogm.cypher.query.SortOrder;
import org.neo4j.ogm.session.Session;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.PageImpl;
import org.springframework.data.domain.Pageable;
import org.springframework.data.domain.Sort;
import org.springframework.stereotype.Service;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Iterator;
import java.util.List;
@Service
//分頁 Pageable pageable, List<T> results 頁數設定和排序欄位設定
public class PagesService<T> {
    @Autowired
private Session session;
    public Page<T> findAll(Class<T> clazz, Pageable pageable, Filters filters){
        Collection data = this.session.loadAll(clazz, filters, convert(pageable.getSort()), new Pagination(pageable.getPageNumber(), pageable.getPageSize()), 1);
        return updatePage(pageable, new ArrayList(data));
}

    private Page<T> updatePage(Pageable pageable, List<T> results) {
        int pageSize = pageable.getPageSize();
        int pageOffset = pageable.getOffset();
        int total = pageOffset + results.size() + (results.size() == pageSize?pageSize:0);
        return new PageImpl(results, pageable, (long)total);
}

    private SortOrder convert(Sort sort) {
        SortOrder sortOrder = new SortOrder();
        if(sort != null) {
            Iterator var3 = sort.iterator();
            while(var3.hasNext()) {
                Sort.Order order = (Sort.Order)var3.next();
                if(order.isAscending()) {
                    sortOrder.add(new String[]{order.getProperty()});
} else {
                    sortOrder.add(SortOrder.Direction.DESC, new String[]{order.getProperty()});
}
            }
        }
        return sortOrder;
}
}