Spring Data Neo4j-升级到Spring Boot 2后，findById方法引发无效的查询异常

时间：2018-10-23 09:29:33

标签： java spring-boot neo4j cypher spring-data-neo4j

我一直在研究使用Spring Boot将Neo4j作为数据库创建的微服务。因此，其中Product和AccessoryRelation中的两个相关实体是：

@NodeEntity
@QueryEntity
public class Product extends AbstractNeo4jEntity {

@Index(primary = true, unique = true)
private String productId;

@Transient
private String market;

@JsonIgnore
@Relationship(type = "HAS_ACCESSORY")
private Set<AccessoryRelation> relations = new HashSet<>();

public Product() {

}

public Product(final String productId) {
    this.productId = productId;
}

public String getProductId() {
    return productId;
}

public String getMarket() {
    return market;
}

public void setMarket(final String market) {
    this.market = market;
}

public Set<AccessoryRelation> getRelations() {
    return new HashSet<>(relations);
}

public void addAccessory(final Product accessory) {
    Assert.notNull(accessory, "Accessory product can not be null");
    Assert.hasText(accessory.getProductId(),
            "Accessory product should have a valid identifier");
    Assert.hasText(accessory.getMarket(),
            "Accessory product should be available atleast in one market");
    Assert.isTrue(!this.equals(accessory),
            "A product can't be an accessory of itself.");

    final AccessoryRelation relation = this.relations.stream() //
            .filter(rel -> rel.getAccessory().equals(accessory)) //
            .findAny() //
            .orElseGet(() -> {
                final AccessoryRelation newRelation = new AccessoryRelation(this,
                        accessory, Sets.newHashSet());
                this.relations.add(newRelation);
                return newRelation;
            });

    relation.addMarket(accessory.getMarket());
}

public void removeAccessory(final Product accessory) {
    Assert.notNull(accessory, "Accessory product can not be null");
    Assert.hasText(accessory.getProductId(),
            "Accessory product should have a valid identifier");
    Assert.hasText(accessory.getMarket(),
            "Accessory product should be available atleast in one market");

    final Optional<AccessoryRelation> relation = this.relations.stream() //
            .filter(rel -> rel.getAccessory().equals(accessory)) //
            .findAny();

    if (relation.isPresent()) {
        relation.get().removeMarket(accessory.getMarket());

        if (relation.get().getMarkets().isEmpty()) {
            this.relations.remove(relation.get());
        }
    }
}

public void removeAccessories() {
    this.relations.clear();
}

@Override
public boolean equals(final Object obj) {
    if (obj == null) {
        return false;
    }

    if (obj == this) {
        return true;
    }

    if (!(obj instanceof Product)) {
        return false;
    }

    final Product product = (Product) obj;

    return new EqualsBuilder() //
            .append(getProductId(), product.getProductId()) //
            .isEquals();
}

@Override
public int hashCode() {
    return new HashCodeBuilder() //
            .append(getProductId()) //
            .toHashCode();
}

@Override
public String toString() {
    return new ToStringBuilder(this) //
            .append("ProductId", getProductId()) //
            .toString();
}
}



@RelationshipEntity(type = "HAS_ACCESSORY")
public class AccessoryRelation extends AbstractNeo4jEntity {

@StartNode
private Product product;

@EndNode
private Product accessory;

private Set<String> markets = new HashSet<>();

public AccessoryRelation() {

}

public AccessoryRelation(final Product product, final Product accessory,
        final Set<String> markets) {
    this.product = product;
    this.accessory = accessory;
    this.markets = markets;
}

public Product getProduct() {
    return product;
}

public void setProduct(final Product product) {
    this.product = product;
}

public Product getAccessory() {
    return accessory;
}

public void setAccessory(final Product accessory) {
    this.accessory = accessory;
}

public Set<String> getMarkets() {
    return new HashSet<>(markets);
}


public void addMarket(final String market) {
    this.markets.add(market);
}


public void removeMarket(final String market) {
    this.markets.remove(market);
}

@Override
public boolean equals(final Object obj) {
    if (obj == null) {
        return false;
    }

    if (obj == this) {
        return true;
    }

    if (!(obj instanceof AccessoryRelation)) {
        return false;
    }

    final AccessoryRelation relation = (AccessoryRelation) obj;

    return new EqualsBuilder() //
            .append(getProduct(), relation.getProduct()) //
            .append(getAccessory(), relation.getAccessory()) //
            .isEquals();
}

@Override
public final int hashCode() {
    return new HashCodeBuilder() //
            .append(getProduct()) //
            .append(getAccessory()) //
            .toHashCode();
}

@Override
public String toString() {
    return new ToStringBuilder(this) //
            .append("Product", getProduct()) //
            .append("Accessory", getAccessory()) //
            .append("Markets", getMarkets()) //
            .toString();
}

}

对于JUnit测试用例，我正在使用nosqlunit-neo4j版本1.0.0-rc.5和一个嵌入式databsase。

现在，我有了findById（productId）方法，该方法将返回Product以及关联的AccessoryRelation对象。但是，升级到Spring Boot 2后，此方法不起作用。因此会引发异常：

org.springframework.data.neo4j.exception.UncategorizedNeo4jException: 
Error executing Cypher; Code: Neo.ClientError.Statement.InvalidSyntax; 
Description: Invalid input '|': expected whitespace, comment, a 
relationship pattern, '.', node labels, '[', "=~", IN, STARTS, ENDS, 
CONTAINS, IS, '^', '*', '/', '%', '+', '-', '=', "<>", "!=", '<', '>', 
"<=", ">=", AND, XOR, OR, ',' or ']' (line 1, column 113 (offset: 
112))
"MATCH (n:`Product`) WHERE n.`productId` = { id } WITH n RETURN n,[ [ 
(n)-[r_h1:`HAS_ACCESSORY`]->(p1:`Product`) | [ r_h1, p1 ] ] ]"

^; nested exception is org.neo4j.ogm.exception.CypherException: Error 
executing Cypher; Code: Neo.ClientError.Statement.InvalidSyntax; 
Description: Invalid input '|': expected whitespace, comment, a 
relationship pattern, '.', node labels, '[', "=~", IN, STARTS, ENDS, 
CONTAINS, IS, '^', '*', '/', '%', '+', '-', '=', "<>", "!=", '<', '>', 
"<=", ">=", AND, XOR, OR, ',' or ']' (line 1, column 113 (offset: 
112)) 
"MATCH (n:`Product`) WHERE n.`productId` = { id } WITH n RETURN n,[ [ 
(n)-[r_h1:`HAS_ACCESSORY`]->(p1:`Product`) | [ r_h1, p1 ] ] ]"

从外观上看，它正在处理'|'字符作为查询中的无效字符。但是，当我在浏览器上的neo4 3.4.9实例中运行相同的查询时，它运行良好。在那没有语法错误。该应用程序具有默认的neo4j版本2.3.3，该版本来自nosqlunit依赖项。我曾尝试在pom中包含neo4j 3.4.9依赖项，但这会带来一系列新问题。

以下是我的pom.xml：

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" 
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 
<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>2.0.1.RELEASE</version>
    <relativePath /> <!-- lookup parent from repository -->
</parent>

<properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <project.reporting.outputEncoding>UTF- 
8</project.reporting.outputEncoding>
    <java.version>1.8</java.version>
    <project.build.itDirectory>src/it/java</project.build.itDirectory>
    <neo4j-cypher-dsl.version>2.3-RELEASE</neo4j-cypher-dsl.version>
    <querydsl.version>4.1.4</querydsl.version>
    <querydsl-apt.version>1.1.3</querydsl-apt.version>
    <cglib.version>2.2.2</cglib.version>
    <spring-cloud.version>Finchley.RC2</spring-cloud.version>
</properties>

<dependencyManagement>
    <dependencies>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-dependencies</artifactId>
            <version>${spring-cloud.version}</version>
            <type>pom</type>
            <scope>import</scope>
        </dependency>
    </dependencies>
</dependencyManagement>

<dependencies>
    <dependency>
        <groupId>cglib</groupId>
        <artifactId>cglib</artifactId>
        <version>${cglib.version}</version>
    </dependency>
    <dependency>
        <groupId>com.google.guava</groupId>
        <artifactId>guava</artifactId>
        <version>20.0</version>
    </dependency>
    <dependency>
        <groupId>com.querydsl</groupId>
        <artifactId>querydsl-apt</artifactId>
        <scope>provided</scope>
    </dependency>
    <dependency>
        <groupId>com.querydsl</groupId>
        <artifactId>querydsl-lucene3</artifactId>
        <version>${querydsl.version}</version>
        <exclusions>
            <exclusion>
                <groupId>org.apache.lucene</groupId>
                <artifactId>lucene-core</artifactId>
            </exclusion>
        </exclusions>
    </dependency>
    <dependency>
        <groupId>de.codecentric</groupId>
        <artifactId>spring-boot-admin-starter-client</artifactId>
        <version>2.0.0</version>
    </dependency>
    <dependency>
        <groupId>org.apache.commons</groupId>
        <artifactId>commons-lang3</artifactId>
        <version>3.5</version>
    </dependency>
    <!-- This jar is used by CypherQueryDSL at runtime. If its not present
        in classpath then java.lang.ClassNotFoundException: org.apache.lucene.search.Query
        error is thrown -->
    <dependency>
        <groupId>org.apache.lucene</groupId>
        <artifactId>lucene-core</artifactId>
        <version>3.6.2</version>
    </dependency>
    <dependency>
        <groupId>com.consol.citrus</groupId>
        <artifactId>citrus-core</artifactId>
        <version>2.7.2</version>
        <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>com.consol.citrus</groupId>
        <artifactId>citrus-http</artifactId>
        <version>2.7.2</version>
        <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>com.consol.citrus</groupId>
        <artifactId>citrus-java-dsl</artifactId>
        <version>2.7.2</version>
        <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>org.neo4j</groupId>
        <artifactId>neo4j-cypher-dsl</artifactId>
        <version>${neo4j-cypher-dsl.version}</version>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-actuator</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-logging</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.cloud</groupId>
        <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.cloud</groupId>
        <artifactId>spring-cloud-starter-config</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.cloud</groupId>
        <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-data-rest</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-data-neo4j</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.data</groupId>
        <artifactId>spring-data-rest-hal-browser</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-configuration-processor</artifactId>
        <optional>true</optional>
    </dependency>

    <!-- test dependencies -->
    <dependency>
        <groupId>com.lordofthejars</groupId>
        <artifactId>nosqlunit-neo4j</artifactId>
        <version>1.0.0-rc.5</version>
        <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>com.openpojo</groupId>
        <artifactId>openpojo</artifactId>
        <version>0.8.4</version>
        <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>nl.jqno.equalsverifier</groupId>
        <artifactId>equalsverifier</artifactId>
        <version>2.1.7</version>
        <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>org.neo4j</groupId>
        <artifactId>neo4j-ogm-embedded-driver</artifactId>
        <version>3.1.2</version>
        <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>org.ow2.asm</groupId>
        <artifactId>asm-all</artifactId>
        <version>6.0_ALPHA</version>
        <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-test</artifactId>
        <scope>test</scope>
    </dependency>
</dependencies>

<build>
    <finalName>product-accessory-service</finalName>
    <plugins>
        <plugin>
            <groupId>com.mysema.maven</groupId>
            <artifactId>apt-maven-plugin</artifactId>
            <version>${querydsl-apt.version}</version>
            <dependencies>
                <dependency>
                    <groupId>com.querydsl</groupId>
                    <artifactId>querydsl-apt</artifactId>
                    <version>${querydsl.version}</version>
                </dependency>
            </dependencies>
            <configuration>
                <processor>com.querydsl.apt.QuerydslAnnotationProcessor</processor>
            </configuration>
            <executions>
                <execution>
                    <id>add-sources</id>
                    <phase>generate-sources</phase>
                    <goals>
                        <goal>process</goal>
                    </goals>
                    <configuration>
                        <outputDirectory>target/generated-sources/querydsl</outputDirectory>
                    </configuration>
                </execution>
            </executions>
        </plugin>
        <plugin>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-maven-plugin</artifactId>
        </plugin>
        <plugin>
            <groupId>org.sonarsource.scanner.maven</groupId>
            <artifactId>sonar-maven-plugin</artifactId>
        </plugin>
        <plugin>
            <groupId>com.spotify</groupId>
            <artifactId>docker-maven-plugin</artifactId>
            <version>0.4.13</version>
            <configuration>

以前有人遇到过类似的问题吗？有人可以帮我解决这个问题吗？预先感谢。

0 个答案:

没有答案
相关问题
最新问题