早上好,我在本周末有一个头,因为我正在为springboot + angular + jpa的研究做错误。
在做服务管理类时,我根据类JpaRepository的扩展类的教程使用它。
但是我无法解决的项目错误。
关注pom.xml和项目的一些图片,如果有人可以帮助我,谢谢你!
<?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>marco.prova</groupId>
<artifactId>apiweb</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>war</packaging>
<name>apiweb</name>
<description>Demo project for Spring Boot</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.0.0.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-jpa</artifactId>
<version>2.0.5.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-tomcat</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-jpa</artifactId>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
在STS中投影图像。
https://uploaddeimagens.com.br/imagens/1-png-6e078f12-f26b-4266-8030-520f0f0fe7d1
https://uploaddeimagens.com.br/imagens/2-png-2224373b-2cec-46dc-b986-e68876ef57db
https://uploaddeimagens.com.br/imagens/3-png-740ac73d-5bd4-4f45-9394-c2717d4a9423
https://uploaddeimagens.com.br/imagens/4-png-9202635e-5a30-4f58-a862-70d3e9034ec6
我等了!谢谢!答案 0 :(得分:9)
或者您可以尝试从C:\ Users \ User \ .m2文件夹中删除org.springframework.data文件夹并更新Maven项目
答案 1 :(得分:2)
类型 org.springframework.data.repository.query.QueryByExampleExecutor 无法解决。它是从必需的.class中间接引用的 文件
您需要下载Spring data commons jar并将其保存在类路径中。
或者在POM中添加以下依赖项:
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-commons</artifactId>
<version>2.0.5.RELEASE</version>
</dependency>
答案 2 :(得分:0)
您应该使用spring-boot-starter-data-jpa
启动器:
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>