没有名为“mongoTemplate”的豆子可用。弹簧靴 + MongoDB

2022-09-03 00:58:09

我正在使用Spring Boot和MongoDB构建后端,首先我正在制作用户存储库,服务和控制器,并得到这个错误:

***************************
APPLICATION FAILED TO START
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Description:

Field userRepository in com.package.package.controller.UserController required a bean named 'mongoTemplate' that could not be found.

The injection point has the following annotations:
    - @org.springframework.beans.factory.annotation.Autowired(required=true)


Action:

Consider defining a bean named 'mongoTemplate' in your configuration.

代码如下:

用户控制器:

package com.package.package.controller;

import com.package.package.entities.User;
import com.package.package.repositories.UserRepository;
import org.bson.types.ObjectId;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;

import javax.validation.Valid;
import java.util.List;

@RestController
@RequestMapping("/users")
public class UserController {
    @Autowired
    private UserRepository userRepository;

    @GetMapping(value = "/")
    public List<User> getAllUsers() {
        return userRepository.findAll();
    }

    @GetMapping(value = "/{id}")
    public User getUserById(@PathVariable("id") ObjectId id) {
        return userRepository.findBy_id(id);
    }

    @PutMapping(value = "/{id}")
    public void modifyUserById(@PathVariable("id") ObjectId id, @Valid @RequestBody User user) {
        user.set_id(id);
        userRepository.save(user);
    }

    @PostMapping(value = "/")
    public User createUser(@Valid @RequestBody User user) {
        user.set_id(ObjectId.get());
        userRepository.save(user);
        return user;
    }

    @DeleteMapping(value = "/{id}")
    public void deleteUser(@PathVariable ObjectId id) {
        userRepository.delete(userRepository.findBy_id(id));
    }
}

用户存储库:

package com.package.package.repositories;

import com.package.package.entities.User;
import org.bson.types.ObjectId;
import org.springframework.data.mongodb.repository.MongoRepository;
import org.springframework.stereotype.Repository;

@Repository
public interface UserRepository extends MongoRepository<User, String> {
    User findBy_id(ObjectId _id);
}

用户服务:

package com.package.package.service;

import com.package.package.entities.User;
import org.bson.types.ObjectId;

import java.util.List;

public interface UserService {
    User save(User user);
    User findbyid(ObjectId _id);
    List<User> getAll();
    void delete(User user);
}

主要应用:

package com.package.package;

import com.package.package.repositories.UserRepository;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.data.mongodb.repository.config.EnableMongoRepositories;

@SpringBootApplication
@EnableMongoRepositories(basePackageClasses = UserRepository.class)
public class TestApplication {

    public static void main(String[] args) {
        SpringApplication.run(TestApplication.class, args);
    }

}

我使用我过去的一个项目作为参考(不同之处在于这是用postgres完成的)。你想要的任何其他信息,只要告诉我。提前致谢。

更新:这是pom.xml

<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.3.2.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.wazzka</groupId>
    <artifactId>wazzka</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>wazzka</name>
    <description>WazzkaProject</description>

    <properties>
        <java.version>14</java.version>
        <spring.framework.version>5.2.8.RELEASE</spring.framework.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
            <exclusions>
                <exclusion>
                    <groupId>org.junit.vintage</groupId>
                    <artifactId>junit-vintage-engine</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
        <dependency>
            <groupId>org.springframework.data</groupId>
            <artifactId>spring-data-mongodb</artifactId>
            <version>3.0.3.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.data</groupId>
            <artifactId>spring-data-releasetrain</artifactId>
            <version>Lovelace-SR9</version>
            <type>pom</type>
            <scope>import</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.data</groupId>
            <artifactId>spring-data-commons</artifactId>
            <version>2.2.3.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>jakarta.validation</groupId>
            <artifactId>jakarta.validation-api</artifactId>
            <version>2.0.2</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.data</groupId>
            <artifactId>spring-data-jpa</artifactId>
            <version>2.2.3.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-mongodb</artifactId>
        </dependency>
    </dependencies>

    <repositories>
        <repository>
            <id>spring-milestone</id>
            <name>Spring Maven MILESTONE Repository</name>
            <url>https://repo.spring.io/libs-milestone</url>
        </repository>
    </repositories>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

</project>

答案 1

尝试添加此依赖项:

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-data-mongodb</artifactId>
</dependency>

答案 2

虽然在大多数情况下,这当然不是错误的原因,但它发生在我身上并且我花了相当多的时间寻找原因的事实使我想在这里发布“解决方案”。

在我的情况下,我忘记在最初禁用自动配置后再次删除这些行(application.yml):

spring.autoconfigure.exclude:
  - org.springframework.boot.autoconfigure.mongo.MongoAutoConfiguration
  - org.springframework.boot.autoconfigure.data.mongo.MongoDataAutoConfiguration