Maven jaxb2:xjc 無法生成代碼

Question

我已將以下插件添加到 pom.xml 中的 Maven 構建中

<plugin>
    <groupId>org.codehaus.mojo</groupId>
    <artifactId>jaxb2-maven-plugin</artifactId>
    <executions>
        <execution>
            <phase>generate-sources</phase>
            <goals>
                <goal>xjc</goal>
            </goals>
            <configuration> 
                <extension>true</extension>                             
                <clearOutputDir>false</clearOutputDir>
                <schemaDirectory>${basedir}/src/main/resources/xsd</schemaDirectory>
                <schemaFiles>myapp.xsd</schemaFiles>                                                        
                <outputDirectory>${basedir}/src/main/java</outputDirectory>         
                <bindingDirectory>src/main/resources/xsd</bindingDirectory>     
                <bindingFiles>myapp-bindings.xjb</bindingFiles>
            </configuration>
        </execution>
    </executions>                       

</plugin>

以下是構建錯誤。

[INFO] Ignored given or default xjbSources [C:\WorkSpace\MyApp\src\main\xjb], since it is not an existent file or directory.
[INFO] Ignored given or default sources [C:\WorkSpace\MyApp\src\main\xsd], since it is not an existent file or directory.
[WARNING] No XSD files found. Please check your plugin configuration.
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 3.273s
[INFO] Finished at: Tue May 12 16:24:26 EDT 2015
[INFO] Final Memory: 9M/124M
[INFO] ------------------------------------------------------------------------
[WARNING] The requested profile "dev-artifactory" could not be activated because it does not exist.
[ERROR] Failed to execute goal org.codehaus.mojo:jaxb2-maven-plugin:2.1:xjc (default) on project pml-jasypt-authentication-service: MojoExecutionException: NoSchemasException -> [Help 1]

我很困惑，為什么插件不引用配置中指定的路徑和文件。

Answer 1

2.1 版更改了指定來源的方式

http://mojo.codehaus.org/jaxb2-maven-plugin/xjc-mojo.html#sources

例如

<configuration>
...
  <sources>
     <source>some/explicit/relative/file.xsd</source>
     <source>/another/absolute/path/to/a/specification.xsd</source>
     <source>a/directory/holding/xsds</source>
 </sources>
</configuration>

我遇到了很多其他問題，所以按照 jshark 的建議堅持使用 1.6 是一個不錯的計划

Answer 2

2.1 版有一個錯誤。

您可以使用帶有新語法的<version>2.2</version> ：

<configuration>
...
  <sources>
     <source>some/explicit/relative/file.xsd</source>
     <source>/another/absolute/path/to/a/specification.xsd</source>
     <source>a/directory/holding/xsds</source>
 </sources>
</configuration>

您可以使用帶有舊語法的<version>1.6</version> ：

<configuration>
    ...
    <schemaDirectory>${basedir}/src/main/resources/xsd</schemaDirectory>
    <schemaFiles>myapp.xsd</schemaFiles> 
</configuration>

Answer 3

我今天遇到了同樣的問題，並通過以下方式解決了它：

<version>1.6</version>

關於插件定義（這通常是好的做法）

Answer 4

我通過將編譯器版本設置為JDK 1.8和jaxb2-maven-plugin版本1.5使其工作根據文檔，它將與最低 JDK 1.6 一起工作 [如果在站點中更改鏈接，則該鏈接可能會失效]。 例如 ：

<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/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>com.mntq.jaxb.xsd.to.pojo</groupId>
  <artifactId>XsdToPojo</artifactId>
  <version>0.0.1-SNAPSHOT</version>


  <build>
        <finalName>PersistencePoJO</finalName>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.1</version>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                </configuration>
            </plugin>
             <plugin>
            <groupId>org.codehaus.mojo</groupId>
            <artifactId>jaxb2-maven-plugin</artifactId>
            <version>1.5</version>
            <executions>
                <execution>
                    <id>xjc</id>
                    <goals>
                        <goal>xjc</goal>
                    </goals>
                </execution>
            </executions>
            <configuration>
                <!-- The package of your generated sources -->
                <packageName>com.mntq.jaxb.pojo</packageName>
            </configuration>
        </plugin>
        </plugins>
    </build>
</project> 

Answer 5

我們也可以使用如下：

           <plugin>
            <groupId>org.codehaus.mojo</groupId>
            <artifactId>jaxb2-maven-plugin</artifactId>
            <version>1.5</version>
            <executions>
                <execution>
                    <id>id1</id>
                    <goals>
                        <goal>xjc</goal>
                    </goals>
                    <configuration>
                        <outputDirectory>src/main/java</outputDirectory>
                        <clearOutputDir>false</clearOutputDir>
                        <packageName>com.subu.xsd.model</packageName>
                        <schemaDirectory>src/main/java/schemadir</schemaDirectory>
                        <schemaFiles>XYZ.xsd</schemaFiles>
                    </configuration>
                </execution>
            </executions>
        </plugin>

Answer 6

我通過在 eclipse maven 更新中檢查“強制更新快照/發布”選項來解決它。

它強制它更新所有相關的依賴項。

Answer 7

如果您只是將 xerces 依賴項添加到 jaxb 插件聲明的末尾，它將起作用。 很簡單：插件只需要一些類來執行。 現在給他 :) I. Senatov。

            <plugin>
            <groupId>org.codehaus.mojo</groupId>
            <artifactId>jaxb2-maven-plugin</artifactId>
            <version>1.6</version>
            <executions>
                <execution>
                    <phase>generate-sources</phase>
                    <id>xjc-dtd</id>
                    <goals>
                        <goal>xjc</goal>
                    </goals>
                    <configuration>
                        <arguments>-dtd</arguments>
                        <dtd>true</dtd>
                        <!-- The package of your generated sources -->
                        <packageName>mi.minet.lurc.dtd</packageName>
                        <schemaDirectory>src/main/resources/dtd</schemaDirectory>
                        <schemaFiles>lurc.dtd</schemaFiles>
                    </configuration>
                </execution>
                <execution>
                    <phase>generate-sources</phase>
                    <id>xjc-xsd</id>
                    <goals>
                        <goal>xjc</goal>
                    </goals>
                    <configuration>
                        <packageName>mi.minet.lurc.xsd.configuration</packageName>
                        <schemaDirectory>src/main/resources/xsd</schemaDirectory>
                        <schemaFiles>configuration.xsd</schemaFiles>
                        <clearOutputDir>false</clearOutputDir>
                    </configuration>
                </execution>
            </executions>
            <dependencies>
                <dependency>
                    <groupId>xerces</groupId>
                    <artifactId>xercesImpl</artifactId>
                    <version>2.11.0</version>
                </dependency>
            </dependencies>
        </plugin>

Answer 8

就我而言，我通過將 jdk 編譯器版本從 jdk 10 降級到 jdk 1.8 使其工作

Answer 9

在某些情況下，您應該在構建之前使用mvn clean例如

mvn clean compile