neo4j安装配置入门教程
<p>注：网上找了许多教程，发现都不太适合0基础的用户，所以就自己写了一下。<br>
推荐使用1.x版本，经测试2.3.3大量函数被遗弃。</p>
<p>
<strong>安装启动</strong></p>
<ul>
<li>
官网下载tar包</li>
<li>
解压，进入bin下，运行./neo4j</li>
<li>
在url中打开localhost:7474即可使用</li>
</ul>
<p>
<strong>配置</strong></p>
<p>
数据库的location设置。<br>
conf/neo4j-server.properties中第14行<span>org.neo4j.serve.database.location=</span>进行修改</p>
<p>
<strong>使用</strong></p>
<p>
1.web可视化neo4j的工具是webadmin，打开方式：url中打开local/webadmin，即可使用<br>
注：代码修改数据库，似乎需要每次重启neo4j才能在webadmin中显示，也有可能是数据同步慢<br>
2.简单实例（java操作neo4j）</p>
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<code class="java keyword">package</code> <code class="java plain">neo4j;</code>
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<code class="java keyword">import</code> <code class="java plain">java.io.File;</code>
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<code class="java keyword">import</code> <code class="java plain">java.io.IOException;</code>
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<code class="java keyword">import</code> <code class="java plain">javax.management.relation.Relation;</code>
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<code class="java keyword">import</code> <code class="java plain">org.neo4j.graphdb.GraphDatabaseService;</code>
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<code class="java keyword">import</code> <code class="java plain">org.neo4j.graphdb.Node;</code>
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<code class="java keyword">import</code> <code class="java plain">org.neo4j.graphdb.Relationship;</code>
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<code class="java keyword">import</code> <code class="java plain">org.neo4j.graphdb.RelationshipType;</code>
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<code class="java keyword">import</code> <code class="java plain">org.neo4j.graphdb.Transaction;</code>
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<code class="java keyword">import</code> <code class="java plain">org.neo4j.graphdb.factory.GraphDatabaseFactory;</code>
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<code class="java keyword">import</code> <code class="java plain">org.neo4j.io.fs.FileUtils;</code>
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<code class="java keyword">public</code> <code class="java keyword">class</code> <code class="java plain">test {</code>
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<code class="java spaces"> </code><code class="java keyword">public</code> <code class="java keyword">enum</code> <code class="java plain">RelTypes </code><code class="java keyword">implements</code> <code class="java plain">RelationshipType{</code>
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<code class="java spaces"> </code><code class="java plain">KNOWS</code>
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<code class="java spaces"> </code><code class="java plain">}</code>
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<code class="java spaces"> </code><code class="java keyword">private</code> <code class="java keyword">static</code> <code class="java keyword">void</code> <code class="java plain">registerShutdownHook( </code><code class="java keyword">final</code> <code class="java plain">GraphDatabaseService graphDb )</code>
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<code class="java spaces"> </code><code class="java plain">{</code>
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<code class="java spaces"> </code><code class="java comments">// Registers a shutdown hook for the Neo4j instance so that it</code>
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<code class="java spaces"> </code><code class="java comments">// shuts down nicely when the VM exits (even if you "Ctrl-C" the</code>
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<code class="java spaces"> </code><code class="java comments">// running example before it's completed)</code>
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<code class="java spaces"> </code><code class="java comments">/*为了确保neo4j数据库的正确关闭，我们可以添加一个关闭钩子方法</code>
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<code class="java spaces"> </code><code class="java comments">* registerShutdownHook。这个方法的意思就是在jvm中增加一个关闭的</code>
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<code class="java spaces"> </code><code class="java comments">* 钩子，当jvm关闭的时候，会执行系统中已经设置的所有通过方法</code>
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<code class="java spaces"> </code><code class="java comments">* addShutdownHook添加的钩子，当系统执行完这些钩子后，jvm才会关闭。</code>
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<code class="java spaces"> </code><code class="java comments">* 所以这些钩子可以在jvm关闭的时候进行内存清理、对象销毁等操作。*/</code>
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<code class="java spaces"> </code><code class="java plain">Runtime.getRuntime().addShutdownHook( </code><code class="java keyword">new</code> <code class="java plain">Thread()</code>
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<code class="java spaces"> </code><code class="java plain">{</code>
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<code class="java spaces"> </code><code class="java color1">@Override</code>
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<code class="java spaces"> </code><code class="java keyword">public</code> <code class="java keyword">void</code> <code class="java plain">run()</code>
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<code class="java spaces"> </code><code class="java plain">{</code>
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<code class="java spaces"> </code><code class="java plain">graphDb.shutdown();</code>
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<code class="java spaces"> </code><code class="java plain">}</code>
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<code class="java spaces"> </code><code class="java plain">} );</code>
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<code class="java spaces"> </code><code class="java plain">}</code>
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<code class="java spaces"> </code><code class="java keyword">public</code> <code class="java keyword">static</code> <code class="java keyword">void</code> <code class="java plain">main(String[] args) </code><code class="java keyword">throws</code> <code class="java plain">IOException {</code>
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<code class="java spaces"> </code><code class="java plain">FileUtils.deleteRecursively( </code><code class="java keyword">new</code> <code class="java plain">File( </code><code class="java string">"db"</code> <code class="java plain">) ); </code>
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<code class="java spaces"> </code><code class="java plain">GraphDatabaseService graphdb=</code><code class="java keyword">new</code> <code class="java plain">GraphDatabaseFactory().newEmbeddedDatabase(</code><code class="java string">"db"</code><code class="java plain">);</code>
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<code class="java spaces"> </code><code class="java plain">Relationship relationship;</code>
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<code class="java spaces"> </code><code class="java plain">Transaction tx=graphdb.beginTx();</code>
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<code class="java spaces"> </code><code class="java keyword">try</code><code class="java plain">{</code>
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<code class="java spaces"> </code><code class="java plain">Node node1=graphdb.createNode();</code>
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<code class="java spaces"> </code><code class="java plain">Node node2=graphdb.createNode();</code>
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<code class="java spaces"> </code><code class="java plain">node1.setProperty(</code><code class="java string">"message"</code><code class="java plain">, </code><code class="java string">"Hello"</code><code class="java plain">);</code>
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<code class="java spaces"> </code><code class="java plain">node2.setProperty(</code><code class="java string">"message"</code><code class="java plain">, </code><code class="java string">"World"</code><code class="java plain">);</code>
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<code class="java spaces"> </code><code class="java plain">relationship = node1.createRelationshipTo(node2, RelTypes.KNOWS);</code>
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<code class="java spaces"> </code><code class="java plain">relationship.setProperty(</code><code class="java string">"message"</code><code class="java plain">, </code><code class="java string">"brave neo4j"</code><code class="java plain">);</code>
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<code class="java spaces"> </code><code class="java plain">tx.success();</code>
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<code class="java spaces"> </code><code class="java plain">System.out.println(</code><code class="java string">"successfully"</code><code class="java plain">);</code>
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<code class="java spaces"> </code><code class="java plain">}</code>
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<code class="java spaces"> </code><code class="java keyword">finally</code><code class="java plain">{</code>
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<code class="java spaces"> </code><code class="java plain">tx.finish();</code>
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<code class="java spaces"> </code><code class="java plain">}</code>
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<code class="java spaces"> </code><code class="java plain">registerShutdownHook(graphdb);</code>
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<code class="java spaces"> </code><code class="java plain">}</code>
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<code class="java plain">}</code>
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<p>
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。</p>
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原文链接：https://blog.csdn.net/u014451076/article/details/50997701</p>
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