java - Wildfly 和 Jackson @JsonIgnore 注释

Question

我对 Wildfly 和 Java EE 的某些部分相当陌生。

我有一个使用 RestEasy 在 Wildfly 上运行的休息服务。我的“用户”实体有一个“AccessToken”实体。理想情况下，我希望能够以 JSON 形式发送用户实体，而无需同时发送访问 token 。

我做了一些研究，发现我应该能够使用 @JsonIgnore 来实现这一点。但是，此注释不可用 - 可能是我的 POM 中的错误。

如果我理解正确的话，Wildfly 使用 Jackson，所以注释应该是“提供的”。我使用了“bom”，我认为是所有提供的部件，但我遗漏了一些东西？

这是我的 pom.xml，它源自 IntelliJ 的快速入门:

<?xml version="1.0" encoding="UTF-8"?>
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contributors by the @authors tag. See the copyright.txt in the
distribution for a full listing of individual contributors.

Licensed under the Apache License, Version 2.0 (the "License");
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distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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limitations under the License.

<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 http://maven.apache.org/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>

<groupId>com.example</groupId>
<artifactId>myproject</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>war</packaging>
<name>WildFly Quickstarts: example</name>
<description>A starter Java EE 7 webapp project for use on JBoss WildFly / WildFly, generated from the jboss-javaee6-webapp archetype</description>


<properties>
    <!-- Explicitly declaring the source encoding eliminates the following 
        message: -->
    <!-- [WARNING] Using platform encoding (UTF-8 actually) to copy filtered 
        resources, i.e. build is platform dependent! -->
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>

    <!-- JBoss dependency versions -->
    <version.wildfly.maven.plugin>1.0.2.Final</version.wildfly.maven.plugin>

    <!-- Define the version of the JBoss BOMs we want to import to specify 
        tested stacks. -->
    <version.jboss.bom>8.0.0.Final</version.jboss.bom>

    <!-- other plugin versions -->
    <version.compiler.plugin>3.1</version.compiler.plugin>
    <version.surefire.plugin>2.16</version.surefire.plugin>
    <version.war.plugin>2.5</version.war.plugin>

    <!-- maven-compiler-plugin -->
    <maven.compiler.target>1.8</maven.compiler.target>
    <maven.compiler.source>1.8</maven.compiler.source>
</properties>


<dependencyManagement>
    <dependencies>
        <!-- JBoss distributes a complete set of Java EE 7 APIs including a Bill
            of Materials (BOM). A BOM specifies the versions of a "stack" (or a collection) 
            of artifacts. We use this here so that we always get the correct versions 
            of artifacts. Here we use the jboss-javaee-7.0-with-tools stack (you can
            read this as the JBoss stack of the Java EE 7 APIs, with some extras tools
            for your project, such as Arquillian for testing) and the jboss-javaee-7.0-with-hibernate
            stack you can read this as the JBoss stack of the Java EE 7 APIs, with extras
            from the Hibernate family of projects) -->
        <dependency>
            <groupId>org.wildfly.bom</groupId>
            <artifactId>jboss-javaee-7.0-with-tools</artifactId>
            <version>${version.jboss.bom}</version>
            <type>pom</type>
            <scope>import</scope>
        </dependency>
        <dependency>
            <groupId>org.wildfly.bom</groupId>
            <artifactId>jboss-javaee-7.0-with-hibernate</artifactId>
            <version>${version.jboss.bom}</version>
            <type>pom</type>
            <scope>import</scope>
        </dependency>
    </dependencies>
</dependencyManagement>

<dependencies>

    <!-- First declare the APIs we depend on and need for compilation. All 
        of them are provided by JBoss WildFly -->

    <!-- Import the CDI API, we use provided scope as the API is included in 
        JBoss WildFly -->
    <dependency>
        <groupId>javax.enterprise</groupId>
        <artifactId>cdi-api</artifactId>
        <scope>provided</scope>
    </dependency>

    <!-- Import the Common Annotations API (JSR-250), we use provided scope 
        as the API is included in JBoss WildFly -->
    <dependency>
        <groupId>org.jboss.spec.javax.annotation</groupId>
        <artifactId>jboss-annotations-api_1.2_spec</artifactId>
        <scope>provided</scope>
    </dependency>

    <!-- Import the JAX-RS API, we use provided scope as the API is included 
        in JBoss WildFly -->
    <dependency>
        <groupId>org.jboss.resteasy</groupId>
        <artifactId>jaxrs-api</artifactId>
        <scope>provided</scope>
    </dependency>

    <!-- Import the JPA API, we use provided scope as the API is included in 
        JBoss WildFly -->
    <dependency>
        <groupId>org.hibernate.javax.persistence</groupId>
        <artifactId>hibernate-jpa-2.1-api</artifactId>
        <scope>provided</scope>
    </dependency>

    <!-- Import the EJB API, we use provided scope as the API is included in 
        JBoss WildFly -->
    <dependency>
        <groupId>org.jboss.spec.javax.ejb</groupId>
        <artifactId>jboss-ejb-api_3.2_spec</artifactId>
        <scope>provided</scope>
    </dependency>

    <dependency>
        <groupId>com.google.code.gson</groupId>
        <artifactId>gson</artifactId>
        <version>2.5</version>
    </dependency>


    <!-- JSR-303 (Bean Validation) Implementation -->
    <!-- Provides portable constraints such as @Email -->
    <!-- Hibernate Validator is shipped in JBoss WildFly -->
    <dependency>
        <groupId>org.hibernate</groupId>
        <artifactId>hibernate-validator</artifactId>
        <scope>provided</scope>
        <exclusions>
            <exclusion>
                <groupId>org.slf4j</groupId>
                <artifactId>slf4j-api</artifactId>
            </exclusion>
        </exclusions>
    </dependency>

    <!-- Import the JSF API, we use provided scope as the API is included in 
        JBoss WildFly -->
    <dependency>
        <groupId>org.jboss.spec.javax.faces</groupId>
        <artifactId>jboss-jsf-api_2.2_spec</artifactId>
        <scope>provided</scope>
    </dependency>

    <!-- Now we declare any tools needed -->

    <!-- Annotation processor to generate the JPA 2.0 metamodel classes for 
        typesafe criteria queries -->
    <dependency>
        <groupId>org.hibernate</groupId>
        <artifactId>hibernate-jpamodelgen</artifactId>
        <scope>provided</scope>
    </dependency>

    <!-- Annotation processor that raising compilation errors whenever constraint 
        annotations are incorrectly used. -->
    <dependency>
        <groupId>org.hibernate</groupId>
        <artifactId>hibernate-validator-annotation-processor</artifactId>
        <scope>provided</scope>
    </dependency>

    <!-- Needed for running tests (you may also use TestNG) -->
    <dependency>
        <groupId>junit</groupId>
        <artifactId>junit</artifactId>
        <scope>test</scope>
    </dependency>

    <!-- Optional, but highly recommended -->
    <!-- Arquillian allows you to test enterprise code such as EJBs and Transactional(JTA) 
        JPA from JUnit/TestNG -->
    <dependency>
        <groupId>org.jboss.arquillian.junit</groupId>
        <artifactId>arquillian-junit-container</artifactId>
        <scope>test</scope>
    </dependency>

    <dependency>
        <groupId>org.jboss.arquillian.protocol</groupId>
        <artifactId>arquillian-protocol-servlet</artifactId>
        <scope>test</scope>
    </dependency>

    <!-- Facebook library -->
    <dependency>
        <groupId>com.restfb</groupId>
        <artifactId>restfb</artifactId>
        <version>1.17.0</version>
    </dependency>


</dependencies>

<build>
    <!-- Maven will append the version to the finalName (which is the name 
        given to the generated war, and hence the context root) -->
    <finalName>${project.artifactId}</finalName>
    <plugins>
        <plugin>
            <artifactId>maven-war-plugin</artifactId>
            <version>${version.war.plugin}</version>
            <configuration>
                <!-- Java EE 7 doesn't require web.xml, Maven needs to catch up! -->
                <failOnMissingWebXml>false</failOnMissingWebXml>
            </configuration>
        </plugin>
        <!-- The WildFly plugin deploys your war to a local WildFly container -->
        <!-- To use, run: mvn package wildfly:deploy -->

    </plugins>
</build>

<profiles>
    <profile>
        <!-- The default profile skips all tests, though you can tune it to run 
            just unit tests based on a custom pattern -->
        <!-- Seperate profiles are provided for running all tests, including Arquillian 
            tests that execute in the specified container -->
        <id>default</id>
        <activation>
            <activeByDefault>true</activeByDefault>
        </activation>
        <build>
            <plugins>
                <plugin>
                    <artifactId>maven-surefire-plugin</artifactId>
                    <version>${version.surefire.plugin}</version>
                    <configuration>
                        <skip>true</skip>
                    </configuration>
                </plugin>
            </plugins>
        </build>
    </profile>

</profiles>

我确实尝试添加:

    <dependency>
        <groupId>com.fasterxml.jackson.core</groupId>
        <artifactId>jackson-annotations</artifactId>
        <version>2.6.4</version>
    </dependency>

这让我可以使用@JsonIgnore，但它仍然在返回给客户端的 JSON 中显示该字段。我想也许我的 Wildfly 使用的是旧版本的 jackson (1.x) 而不是 2？ (这给我的印象是:JsonIgnoreProperties not working)

Answer 1

注释@JsonIgnore是Jackson注释jar的一部分。 要包含它，请在 pom 文件中使用以下依赖项。

<dependency>
    <groupId>com.fasterxml.jackson.core</groupId>
    <artifactId>jackson-annotations</artifactId>
    <version>2.6.4</version>
</dependency>