如何在spring boot 1.4.1中配置querydsl？

Question

我试图使用spring-data-jpa为一个项目启用querydsl，但是我得到了一些编译错误，比如：

The type com.querydsl.core.types.Predicate cannot be resolved. It is indirectly referenced from required .class files

此外，当我运行mvn clean install时，我会得到以下信息：

Caused by: java.lang.ClassNotFoundException: com.querydsl.core.annotations.QueryEntities

<dependency>
    <groupId>com.querydsl</groupId>
    <artifactId>querydsl-jpa</artifactId>
</dependency>
<dependency>
    <groupId>com.querydsl</groupId>
    <artifactId>querydsl-apt</artifactId>
    <scope>provided</scope>
</dependency>

<plugin>
    <groupId>com.mysema.maven</groupId>
    <artifactId>apt-maven-plugin</artifactId>
    <version>1.1.3</version>
    <executions>
        <execution>
            <goals>
                <goal>process</goal>
            </goals>
            <configuration>
                <outputDirectory>target/generated-sources/java</outputDirectory>
                <processor>com.querydsl.apt.jpa.JPAAnnotationProcessor</processor>
            </configuration>
        </execution>
    </executions>
</plugin>

我从querydsl 4.1.4降级到4.1.3，并且至少正在编译这个项目。现在，我可以开始一些测试，我会发布我的发现。

我认为这个问题仍然存在，因为默认情况下spring boot 1.4.1附带querydsl 4.1.4版本。

Answer 1

在插件中放置依赖项。

<plugin>
    <groupId>com.mysema.maven</groupId>
    <artifactId>apt-maven-plugin</artifactId>
    <version>1.1.3</version>
    <executions>
        <execution>
            <goals>
                <goal>process</goal>
            </goals>
            <configuration>
                <outputDirectory>target/generated-sources/java</outputDirectory>
                <processor>com.querydsl.apt.jpa.JPAAnnotationProcessor</processor>
            </configuration>
        </execution>
    </executions>
    <dependencies>
        <dependency>
            <groupId>com.querydsl</groupId>
            <artifactId>querydsl-jpa</artifactId>
        </dependency>
        <dependency>
            <groupId>com.querydsl</groupId>
            <artifactId>querydsl-apt</artifactId>
            <scope>provided</scope>
        </dependency>
    </dependencies>
</plugin>