不可变对象不使用 java 9 和模块生成代码
Immutables don't generate code with java 9 with modules
使用 immutables-library 与 java 9 一起使用效果很好,直到我将 module-info.java
添加到项目中,将不再生成 Immutables*.java
。
我按照 IntelliJ 的建议在模块信息中添加 'requires value'。
我错过了什么,是 immutables-library
问题还是我需要设置的其他内容以便 javac
找到注释处理。
我正在使用 Maven,maven-compiler-plugin:3.7.0
配置为 target/source = 9.
您遇到的问题是您没有将 Immutable 部分配置为注解处理器,应该这样做:
<?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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>example</groupId>
<artifactId>jigsaw</artifactId>
<version>1.0-SNAPSHOT</version>
<dependencies>
<dependency>
<groupId>org.immutables</groupId>
<artifactId>value</artifactId>
<version>2.5.6</version>
<scope>provided</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.7.0</version>
<configuration>
<source>9</source>
<target>9</target>
<annotationProcessorPaths>
<dependency>
<groupId>org.immutables</groupId>
<artifactId>value</artifactId>
<version>2.5.6</version>
</dependency>
</annotationProcessorPaths>
</configuration>
</plugin>
</plugins>
</build>
</project>
除了关于编码的提示之外,可以通过像这样定义编码来简单地解决:
<?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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>example</groupId>
<artifactId>jigsaw</artifactId>
<version>1.0-SNAPSHOT</version>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<dependencies>
<dependency>
<groupId>org.immutables</groupId>
<artifactId>value</artifactId>
<version>2.5.6</version>
<scope>provided</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.7.0</version>
<configuration>
<source>9</source>
<target>9</target>
<annotationProcessorPaths>
<dependency>
<groupId>org.immutables</groupId>
<artifactId>value</artifactId>
<version>2.5.6</version>
</dependency>
</annotationProcessorPaths>
</configuration>
</plugin>
</plugins>
</build>
</project>
如果您通过上述配置构建,您将获得所需的一切:
.
├── pom.xml
├── src
│ └── main
│ └── java
│ ├── example
│ │ └── Some.java
│ └── module-info.java
└── target
├── classes
│ ├── example
│ │ ├── ImmutableSome.class
│ │ ├── ImmutableSome$Builder.class
│ │ ├── ImmutableSome.class
│ │ └── Some.class
│ └── module-info.class
├── generated-sources
│ └── annotations
│ └── example
│ └── ImmutableSome.java
├── jigsaw-1.0-SNAPSHOT.jar
├── maven-archiver
│ └── pom.properties
└── maven-status
└── maven-compiler-plugin
└── compile
└── default-compile
├── createdFiles.lst
└── inputFiles.lst
使用 immutables-library 与 java 9 一起使用效果很好,直到我将 module-info.java
添加到项目中,将不再生成 Immutables*.java
。
我按照 IntelliJ 的建议在模块信息中添加 'requires value'。
我错过了什么,是 immutables-library
问题还是我需要设置的其他内容以便 javac
找到注释处理。
我正在使用 Maven,maven-compiler-plugin:3.7.0
配置为 target/source = 9.
您遇到的问题是您没有将 Immutable 部分配置为注解处理器,应该这样做:
<?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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>example</groupId>
<artifactId>jigsaw</artifactId>
<version>1.0-SNAPSHOT</version>
<dependencies>
<dependency>
<groupId>org.immutables</groupId>
<artifactId>value</artifactId>
<version>2.5.6</version>
<scope>provided</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.7.0</version>
<configuration>
<source>9</source>
<target>9</target>
<annotationProcessorPaths>
<dependency>
<groupId>org.immutables</groupId>
<artifactId>value</artifactId>
<version>2.5.6</version>
</dependency>
</annotationProcessorPaths>
</configuration>
</plugin>
</plugins>
</build>
</project>
除了关于编码的提示之外,可以通过像这样定义编码来简单地解决:
<?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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>example</groupId>
<artifactId>jigsaw</artifactId>
<version>1.0-SNAPSHOT</version>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<dependencies>
<dependency>
<groupId>org.immutables</groupId>
<artifactId>value</artifactId>
<version>2.5.6</version>
<scope>provided</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.7.0</version>
<configuration>
<source>9</source>
<target>9</target>
<annotationProcessorPaths>
<dependency>
<groupId>org.immutables</groupId>
<artifactId>value</artifactId>
<version>2.5.6</version>
</dependency>
</annotationProcessorPaths>
</configuration>
</plugin>
</plugins>
</build>
</project>
如果您通过上述配置构建,您将获得所需的一切:
.
├── pom.xml
├── src
│ └── main
│ └── java
│ ├── example
│ │ └── Some.java
│ └── module-info.java
└── target
├── classes
│ ├── example
│ │ ├── ImmutableSome.class
│ │ ├── ImmutableSome$Builder.class
│ │ ├── ImmutableSome.class
│ │ └── Some.class
│ └── module-info.class
├── generated-sources
│ └── annotations
│ └── example
│ └── ImmutableSome.java
├── jigsaw-1.0-SNAPSHOT.jar
├── maven-archiver
│ └── pom.properties
└── maven-status
└── maven-compiler-plugin
└── compile
└── default-compile
├── createdFiles.lst
└── inputFiles.lst