关于Lombok包下，Model之上，使用@Data做了什么工作

た入场券 2021-11-17 09:30 168阅读 0赞

## 自建的Model（Lombok下的@Data） ##

package dockerDemo1.model;
    
    import lombok.Data;
    import lombok.experimental.Accessors;
    
    @Data
    @Accessors(chain = true)
    public class Book {
    
        private String id;
    
        private String name;
    
        private String author;
    
        private String price;
    
    }

## Maven编译后的代码 ##

package dockerDemo1.model;
    
    public class Book {
        private String id;
        private String name;
        private String author;
        private String price;
    
        public Book() {
        }
        public String getId() {
            return this.id;
        }
        public String getName() {
            return this.name;
        }
        public String getAuthor() {
            return this.author;
        }
    
        public String getPrice() {
            return this.price;
        }
    	public Book setId(final String id) {
            this.id = id;
            return this;
        }
        public Book setName(final String name) {
            this.name = name;
            return this;
        }
    
        public Book setAuthor(final String author) {
            this.author = author;
            return this;
        }
        public Book setPrice(final String price) {
            this.price = price;
            return this;
        }
        public boolean equals(final Object o) {
            if (o == this) {
                return true;
            } else if (!(o instanceof Book)) {
                return false;
            } else {
                Book other = (Book)o;
                if (!other.canEqual(this)) {
                    return false;
                } else {
                    label59: {
                        Object this$id = this.getId();
                        Object other$id = other.getId();
                        if (this$id == null) {
                            if (other$id == null) {
                                break label59;
                            }
                        } else if (this$id.equals(other$id)) {
                            break label59;
                        }
    
                        return false;
                    }
                    Object this$name = this.getName();
                    Object other$name = other.getName();
                    if (this$name == null) {
                        if (other$name != null) {
                            return false;
                        }
                    } else if (!this$name.equals(other$name)) {
                        return false;
                    }
                    Object this$author = this.getAuthor();
                    Object other$author = other.getAuthor();
                    if (this$author == null) {
                        if (other$author != null) {
                            return false;
                        }
                    } else if (!this$author.equals(other$author)) {
                        return false;
                    }
                    Object this$price = this.getPrice();
                    Object other$price = other.getPrice();
                    if (this$price == null) {
                        if (other$price != null) {
                            return false;
                        }
                    } else if (!this$price.equals(other$price)) {
                        return false;
                    }
                    return true;
                }
            }
        }
    
        protected boolean canEqual(final Object other) {
            return other instanceof Book;
        }
    
        public int hashCode() {
            int PRIME = true;
            int result = 1;
            Object $id = this.getId();
            int result = result * 59 + ($id == null ? 43 : $id.hashCode());
            Object $name = this.getName();
            result = result * 59 + ($name == null ? 43 : $name.hashCode());
            Object $author = this.getAuthor();
            result = result * 59 + ($author == null ? 43 : $author.hashCode());
            Object $price = this.getPrice();
            result = result * 59 + ($price == null ? 43 : $price.hashCode());
            return result;
        }
        public String toString() {
            return "Book(id=" + this.getId() + ", name=" + this.getName() + ", author=" + this.getAuthor() + ", price=" + this.getPrice() + ")";
        }
    }

## @Data其实就是做了，自动生成Model的get,set方法，还有hashcode,equal,tostring方法 ##

## 下一篇，使用Lombok包，应注意的细节，记录一次入坑示例 ##