java - Spring @Autowired - 没有 'com.pc.visitor.visitorrepository' 类型的合格 bean

Question

我正在使用 @Autowire 注释(Spring Maven 项目)。以下 webservice/api 工作正常。直到我在post.java中添加@Autowire注释。

项目路径/文件:

• pcbackend > 访客 > pom.xml
• pcbackend > 访问者 > src > main > 访问者 > Application.java
• pcbackend > 访客 > src > 主要 > 访客 > newvisitor.java
• pcbackend > 访客 > src > 主要 > 访客 > Visitorrepository.java
• pcbackend > 访客 > src > main > 访客 > post.java

<?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>2.3.0.RELEASE</version>
        <relativePath />
        <!-- lookup parent from repository -->
    </parent>
    <groupId>com.pc</groupId>
    <artifactId>visitor</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>demo</name>
    <description>Demo project for Spring Boot</description>
    <properties>
        <java.version>14</java.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-test</artifactId>
            <scope>test</scope>
            <exclusions>
                <exclusion>
                    <groupId>org.junit.vintage</groupId>
                    <artifactId>junit-vintage-engine</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>8.0.12</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.data</groupId>
            <artifactId>spring-data-jpa</artifactId>
            <version>1.0.0.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.apache.httpcomponents</groupId>
            <artifactId>httpclient</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.eclipse.persistence</groupId>
            <artifactId>eclipselink</artifactId>
            <version>2.5.0</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-validation</artifactId>
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-databind</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.data</groupId>
            <artifactId>spring-data-commons</artifactId>
        </dependency>


        <dependency>
            <groupId>org.springframework.data</groupId>
            <artifactId>spring-data-jpa</artifactId>
            <version>2.1.10.RELEASE</version>
        </dependency>

    </dependencies>
    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <configuration>
                    <source>14</source>
                    <target>14</target>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>

package com.pc.visitor;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;


@SpringBootApplication()
public class Application{

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


    }

}

package com.pc.visitor;

import javax.persistence.Entity;
import javax.persistence.Table;
import javax.validation.constraints.NotBlank;

@Entity
@Table(name = "visitors")
public class newvisitor {

    @NotBlank
    private String firstname;
    @NotBlank
    private String lastname;
    @NotBlank
    private String month;
    @NotBlank
    private String day;
    @NotBlank
    private String year;
    @NotBlank
    private String socialsecuritynumber;
    @NotBlank
    private String street1;
    private String street2;
    @NotBlank
    private String city;
    @NotBlank
    private String state;
    @NotBlank
    private String zip;
    @NotBlank
    private String phone;
    @NotBlank
    private String email;

    public newvisitor(){
        super();
    }

    public newvisitor(String firstname, String lastname, String month, String day, String year, String socialsecuritynumber, String street1, String street2, String city, String state, String zip, String phone, String email) {
        super();

        this.firstname = firstname;
        this.lastname = lastname;
        this.month = month;
        this.day = day;
        this.day = year;
        this.day = socialsecuritynumber;
        this.day = street1;
        this.day = street2;
        this.day = city;
        this.day = state;
        this.day = zip;
        this.day = phone;
        this.day = email;
    }




    /**
     * @return String return the firstname
     */
    public String getFirstname() {
        return firstname;
    }

    /**
     * @param firstname the firstname to set
     */
    public void setFirstname(String firstname) {
        this.firstname = firstname;
    }

    /**
     * @return String return the lastname
     */
    public String getLastname() {
        return lastname;
    }

    /**
     * @param lastname the lastname to set
     */
    public void setLastname(String lastname) {
        this.lastname = lastname;
    }

    /**
     * @return String return the month
     */
    public String getMonth() {
        return month;
    }

    /**
     * @param month the month to set
     */
    public void setMonth(String month) {
        this.month = month;
    }

    /**
     * @return String return the day
     */
    public String getDay() {
        return day;
    }

    /**
     * @param day the day to set
     */
    public void setDay(String day) {
        this.day = day;
    }

    /**
     * @return String return the year
     */
    public String getYear() {
        return year;
    }

    /**
     * @param year the year to set
     */
    public void setYear(String year) {
        this.year = year;
    }

    /**
     * @return String return the socialsecuritynumber
     */
    public String getSocialsecuritynumber() {
        return socialsecuritynumber;
    }

    /**
     * @param socialsecuritynumber the socialsecuritynumber to set
     */
    public void setSocialsecuritynumber(String socialsecuritynumber) {
        this.socialsecuritynumber = socialsecuritynumber;
    }

    /**
     * @return String return the street1
     */
    public String getStreet1() {
        return street1;
    }

    /**
     * @param street1 the street1 to set
     */
    public void setStreet1(String street1) {
        this.street1 = street1;
    }

    /**
     * @return String return the street2
     */
    public String getStreet2() {
        return street2;
    }

    /**
     * @param street2 the street2 to set
     */
    public void setStreet2(String street2) {
        this.street2 = street2;
    }

    /**
     * @return String return the city
     */
    public String getCity() {
        return city;
    }

    /**
     * @param city the city to set
     */
    public void setCity(String city) {
        this.city = city;
    }

    /**
     * @return String return the state
     */
    public String getState() {
        return state;
    }

    /**
     * @param state the state to set
     */
    public void setState(String state) {
        this.state = state;
    }

    /**
     * @return String return the zip
     */
    public String getZip() {
        return zip;
    }

    /**
     * @param zip the zip to set
     */
    public void setZip(String zip) {
        this.zip = zip;
    }

    /**
     * @return String return the phone
     */
    public String getPhone() {
        return phone;
    }

    /**
     * @param phone the phone to set
     */
    public void setPhone(String phone) {
        this.phone = phone;
    }

    /**
     * @return String return the email
     */
    public String getEmail() {
        return email;
    }

    /**
     * @param email the email to set
     */
    public void setEmail(String email) {
        this.email = email;
    }

}

package com.pc.visitor;

import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.stereotype.Repository;


@Repository
public interface visitorrepository extends JpaRepository<newvisitor, Long> {
}

package com.pc.visitor;


import javax.validation.Valid;

import org.springframework.web.bind.annotation.CrossOrigin;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.beans.factory.annotation.Autowired;


@CrossOrigin(origins = "http://localhost:4200")
@RestController
public class post {

    //@Autowired
    visitorrepository visitorrepository;

    @PostMapping("/post")
    public void insert(@Valid @RequestBody newvisitor newvisitor) {

    }

}

APPLICATION FAILED TO START
***************************

Description:

Field visitorrepository in com.pc.visitor.post required a bean of type 'com.pc.visitor.visitorrepository' 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 of type 'com.pc.visitor.visitorrepository' in your configuration.

我有一种感觉，我应该使用一些其他注释，例如 @service、@component、@controller、@configuration，甚至 @componentscan 等。我只是不知道在哪里列出这些东西.

关于我需要做什么有什么想法吗？就像我说的，@Autowired 注释掉后一切都很完美。

想法？

Answer 1

我的 newvisitor.java 文件/类中需要 @Id 注释。

package com.pc.visitor;

import javax.validation.constraints.NotBlank;
import javax.persistence.Entity;
import javax.persistence.Id;
import javax.persistence.Table;

@Entity
@Table(name = "visitors")
public class newvisitor {

    @Id
    private long id;
    @NotBlank
    private String firstname;
    @NotBlank
    private String lastname;
    @NotBlank
    private String month;
    @NotBlank
    private String day;
    @NotBlank
    private String year;
    @NotBlank
    private String socialsecuritynumber;
    @NotBlank
    private String street1;
    private String street2;
    @NotBlank
    private String city;
    @NotBlank
    private String state;
    @NotBlank
    private String zip;
    @NotBlank
    private String phone;
    @NotBlank
    private String email;

    public newvisitor(){
        super();
    }

    public newvisitor(String firstname, String lastname, String month, String day, String year, String socialsecuritynumber, String street1, String street2, String city, String state, String zip, String phone, String email) {
        super();

        this.firstname = firstname;
        this.lastname = lastname;
        this.month = month;
        this.day = day;
        this.day = year;
        this.day = socialsecuritynumber;
        this.day = street1;
        this.day = street2;
        this.day = city;
        this.day = state;
        this.day = zip;
        this.day = phone;
        this.day = email;
    }




    /**
     * @return String return the firstname
     */
    public String getFirstname() {
        return firstname;
    }

    /**
     * @param firstname the firstname to set
     */
    public void setFirstname(String firstname) {
        this.firstname = firstname;
    }

    /**
     * @return String return the lastname
     */
    public String getLastname() {
        return lastname;
    }

    /**
     * @param lastname the lastname to set
     */
    public void setLastname(String lastname) {
        this.lastname = lastname;
    }

    /**
     * @return String return the month
     */
    public String getMonth() {
        return month;
    }

    /**
     * @param month the month to set
     */
    public void setMonth(String month) {
        this.month = month;
    }

    /**
     * @return String return the day
     */
    public String getDay() {
        return day;
    }

    /**
     * @param day the day to set
     */
    public void setDay(String day) {
        this.day = day;
    }

    /**
     * @return String return the year
     */
    public String getYear() {
        return year;
    }

    /**
     * @param year the year to set
     */
    public void setYear(String year) {
        this.year = year;
    }

    /**
     * @return String return the socialsecuritynumber
     */
    public String getSocialsecuritynumber() {
        return socialsecuritynumber;
    }

    /**
     * @param socialsecuritynumber the socialsecuritynumber to set
     */
    public void setSocialsecuritynumber(String socialsecuritynumber) {
        this.socialsecuritynumber = socialsecuritynumber;
    }

    /**
     * @return String return the street1
     */
    public String getStreet1() {
        return street1;
    }

    /**
     * @param street1 the street1 to set
     */
    public void setStreet1(String street1) {
        this.street1 = street1;
    }

    /**
     * @return String return the street2
     */
    public String getStreet2() {
        return street2;
    }

    /**
     * @param street2 the street2 to set
     */
    public void setStreet2(String street2) {
        this.street2 = street2;
    }

    /**
     * @return String return the city
     */
    public String getCity() {
        return city;
    }

    /**
     * @param city the city to set
     */
    public void setCity(String city) {
        this.city = city;
    }

    /**
     * @return String return the state
     */
    public String getState() {
        return state;
    }

    /**
     * @param state the state to set
     */
    public void setState(String state) {
        this.state = state;
    }

    /**
     * @return String return the zip
     */
    public String getZip() {
        return zip;
    }

    /**
     * @param zip the zip to set
     */
    public void setZip(String zip) {
        this.zip = zip;
    }

    /**
     * @return String return the phone
     */
    public String getPhone() {
        return phone;
    }

    /**
     * @param phone the phone to set
     */
    public void setPhone(String phone) {
        this.phone = phone;
    }

    /**
     * @return String return the email
     */
    public String getEmail() {
        return email;
    }

    /**
     * @param email the email to set
     */
    public void setEmail(String email) {
        this.email = email;
    }

}