Question

我们正在使用maven插件maven-jaxb2-plugin从xsd生成JAXB对象。以下是我们的依赖

jaxb2-basics - 0.6.2
jaxb2-basics-annotate - 0.6.2

在我们的maven文件中，我们还包括-Xannotate和-XtoString

    <plugin>                
<groupId>org.jvnet.jaxb2.maven2</groupId>
                    <artifactId>maven-jaxb2-plugin</artifactId>
                    <executions>
                         <execution>
                            <id>exec1</id>
                            <phase>generate-sources</phase>
                            <goals>
                                <goal>generate</goal>
                            </goals>
                            <configuration>
                                <schemaDirectory>${basedir}/src/main/resources/xsd</schemaDirectory>
                                <bindingDirectory>${basedir}/src/main/resources/xsd</bindingDirectory>
                                <generatePackage>org.learning.json.generated</generatePackage>
                                <generateDirectory>${basedir}/generated</generateDirectory>
                                <clearOutputDir>false</clearOutputDir>
                                <includeSchemas>
                                    <includeSchema>Person.xsd</includeSchema>
                                </includeSchemas>
                                <plugins>
                                    <plugin>
                                        <groupId>org.jvnet.jaxb2_commons</groupId>
                                        <artifactId>jaxb2-basics</artifactId>
                                        <version>0.6.2</version>
                                    </plugin>
                                    <plugin>
                                        <groupId>org.jvnet.jaxb2_commons</groupId>
                                        <artifactId>jaxb2-basics-annotate</artifactId>
                                        <version>0.6.2</version>
                                    </plugin>
                                </plugins>
                                <args>
                                    <arg>-Xannotate</arg>
                                    <arg>-XtoString</arg>
                                </args>
                            </configuration>
                        </execution>

绑定文件如下

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<jaxb:bindings xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
               xmlns:xs="http://www.w3.org/2001/XMLSchema" 
               xmlns:xjc="http://java.sun.com/xml/ns/jaxb/xjc"
               xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
               xmlns:annox="http://annox.dev.java.net"
               jaxb:extensionBindingPrefixes="xjc annox"
               jaxb:version="2.0">

     <jaxb:bindings schemaLocation="Person.xsd" multiple="true">  
        <jaxb:bindings node="xs:complexType[@name='personType']/xs:sequence/xs:element[@type='xs:date']" multiple="true">
            <annox:annotate>
                <annox:annotate target="getter" annox:class="org.codehaus.jackson.map.annotate.JsonSerialize" 
                                using="org.learning.json.JsonDateSerializer"/>
            </annox:annotate>
        </jaxb:bindings>
     </jaxb:bindings>
</jaxb:bindings>

这确实添加了@JsonSerialize（使用= JsonDateSerializer.class）。但我尝试了以下几个选项来添加 include = JsonSerialize.Inclusion.NON_NULL，但无法正常工作

<annox:annotate>
                <annox:annotate target="getter" annox:class="org.codehaus.jackson.map.annotate.JsonSerialize" 
                                using="org.learning.json.JsonDateSerializer"
        include="org.codehause.jackson.map.annotate.JsonSerialize.Inclusion.NON_NULL"/>
            </annox:annotate> 



<annox:annotate>
                <annox:annotate target="getter" annox:class="org.codehaus.jackson.map.annotate.JsonSerialize" 
                                using="org.learning.json.JsonDateSerializer"
        include="org.codehause.jackson.map.annotate.JsonSerialize$Inclusion.NON_NULL"/>
            </annox:annotate>

但在所有情况下，获取ValueParseException。那么使用include（）等参数的正确方法是什么，将JsonSerialize的typing（）添加到注释中。

另外，基于How to add Jackson annotations to POJO generated from XSD by JAXB/XJC? 我也试过

<jaxb:bindings schemaLocation="Person.xsd" multiple="true">  
        <jaxb:bindings node="xs:complexType[@name='personType']/xs:sequence/xs:element[@type='xs:date']" multiple="true">
            <annox:annotate>
                <annox:annotate target="getter" annox:class="org.codehaus.jackson.map.annotate.JsonSerialize" 
                                using="org.learning.json.JsonDateSerializer"/>
            </annox:annotate>
            <annox:annotate>
                    @org.codehaus.jackson.map.annotate.JsonSerialize
                    (include=org.codehaus.jackson.map.annotate.JsonSerialize.Inclusion.ALWAYS
            </annox:annotate>
        </jaxb:bindings>
     </jaxb:bindings>

这也没有在注释中添加任何包含部分。

Answer 1

免责声明：我是jaxb2-annotate-plugin的作者。

首先，尝试使用XML语法（从1.0.0开始不推荐使用）：

<annox:annotate
    target="getter"
    annox:class="org.codehaus.jackson.map.annotate.JsonSerialize" 
    using="org.learning.json.JsonDateSerializer"
    include="NON_NULL"/>

接下来，尝试使用Java语法：

<annox:annotate>
    @org.codehaus.jackson.map.annotate.JsonSerialize
        (include=org.codehaus.jackson.map.annotate.JsonSerialize.Inclusion.ALWAYS)
</annox:annotate>

你联系到的答案有一个拼写错误 - 最后)丢失了。也许这就是问题，也许不是。

我认为这应该有效。如果没有，请在tests向我发送带有示例项目的拉取请求。我会让它发挥作用。

注意：您必须使用jaxb2-annotate-plugin 1.0.0或更高版本（当前为1.0.1）才能使用Java语法。

如何使用annox插件将include = JsonSerialize.Inclusion.NON_NULL添加到@JsonSerialize

1 个答案: