错误：'org.springframework.beans.factory.UnsatisfiedDependencyException'

问题描述

我正在使用 spring boot 为应用程序easy-notes制作一个rest api。但是我在 eclipse ide 上运行它时遇到了一些错误。我的项目的链接是：https://drive.google.com/drive/folders/1RnyZI9r9l5IVHtUT1j1N5p2krRqcvDUw?usp=sharing

作为参考，这是控制台日志的链接：https://drive.google.com/file/d/1_kWy9SSomF75dKqTdd2lG3zgwKJkmiJO/view?usp=sharing

解决方法

您的代码有几个问题首先进行以​​下更改 在您的 application.properties 文件中更改

apring.jpa.properties.hibernate.dialect=org.hibernate.dialect.MySQL8Dialect

到

spring.jpa.properties.hibernate.dialect=org.hibernate.dialect.MySQL8Dialect

然后你在这里建模https://drive.google.com/drive/folders/1RMpFXCUIhkFpcH8vreAnbdPHJgs1_tCl

改变

public class Note {

    @Entity
    @Table(name = "courses")
    @EntityListeners(AuditingEntityListener.class)
    @JsonIgnoreProperties(value = {"createdAt","updatedAt"},allowGetters = true)
    public class note implements Serializable {
...

到

@Entity
@Table(name = "courses")
@EntityListeners(AuditingEntityListener.class)
@JsonIgnoreProperties(value = {"createdAt",allowGetters = true)
public class Note implements Serializable {
...

所以完整正确的文件如下：

package com.hp.easynotes.model;

import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
import org.springframework.data.annotation.CreatedDate;
import org.springframework.data.annotation.LastModifiedDate;
import org.springframework.data.jpa.domain.support.AuditingEntityListener;

import javax.persistence.*;
import java.io.Serializable;
import java.util.Date;

@Entity
@Table(name = "courses")
@EntityListeners(AuditingEntityListener.class)
@JsonIgnoreProperties(value = {"createdAt",allowGetters = true)
public class Note implements Serializable {

    @Id
    @GeneratedValue
    private Long id;


    private String title;
    private String content;

    @Column(nullable = false,updatable = false)
    @Temporal(TemporalType.TIMESTAMP)
    @CreatedDate
    private Date CreatedAt;


    @Column(nullable = false)
    @Temporal(TemporalType.TIMESTAMP)
    @LastModifiedDate
    private Date UpdatedAt;


    //Getters & Setters

    public Long getId() {
        return id;
    }


    public void setId(Long id) {
        this.id = id;
    }


    public String getContent() {
        return content;
    }


    public void setContent(String content) {
        this.content = content;
    }


    public Date getCreatedAt() {
        return CreatedAt;
    }


    public void setCreatedAt(Date createdAt) {
        CreatedAt = createdAt;
    }


    public Date getUpdatedAt() {
        return UpdatedAt;
    }


    public void setUpdatedAt(Date updatedAt) {
        UpdatedAt = updatedAt;
    }


}