Spring Boot 1.2.5 Hibernate JPA嵌套了很多对很多关系

我有3个表如下

产品{id，title}

Product_image {product_id，image_type_id，path，alt_text}

Product_image_type {id，type_name}

我想要的结果对象是这样的：

Product{ id, title, image_types[ { type_id, type_name, image [ { alt_text, path }, { alt_text, path } ] }, { type_id, type_name, image [ { alt_text, path } ] } ] } 

我做了以下

产品类别：

 @ManyToMany(fetch = FetchType.LAZY, cascade = {CascadeType.ALL}) @JoinTable( name = "product_image", joinColumns = { @JoinColumn(name = "productId", referencedColumnName = "id") }, inverseJoinColumns = { @JoinColumn(name = "typeId", referencedColumnName = "id") } ) private Set imageTypes = new HashSet(); 

Product_type_image类：

 @ManyToMany(mappedBy="imageTypes") private Set products; @OneToMany(fetch=FetchType.LAZY, mappedBy = "productImageType") private Set productImages = new HashSet(); 

Product_image类：

 @OneToOne(fetch=FetchType.LAZY, mappedBy="productImage") @JoinColumn(name="typeId", referencedColumnName = "id", insertable=false, updatable=false) private ProductImageType oneProductImageType; 

我有一种像我想要的格式，但是我得到了一种类型的所有产品图像，我只想获得当前产品的产品图像。 例如我问product_id = 1，我有2种类型，我希望这两种类型中的图像仅用于product_id = 1。

好例子：

 Prodcut{ id: 1, title: "product title 1", image_types:[ { type_id: 1 type_name: "type example 1" image [ { product_id: 1, alt_text: "something", path: "http:something", }, { product_id: 1, alt_text: "something2", path: "http:something2", } ] }, { type_id: 2 type_name: "type example 2" image [ { product_id: 1, alt_text: "type 2 something", path: "http:something", }, { product_id: 1, alt_text: "type 2something2", path: "http:something2", } ] } ] } 

我现在得到的：

 Prodcut{ id: 1, title: "product title 1", image_types:[ { type_id: 1 type_name: "type example 1" image [ { product_id: 1, alt_text: "something", path: "http:something", }, { product_id: 1, alt_text: "something2", path: "http:something2", }, { product_id: 2, alt_text: "something2", path: "http:something2", }, { product_id: 3, alt_text: "something2", path: "http:something2", }, { product_id: 4, alt_text: "something2", path: "http:something2", }, { product_id: 4, alt_text: "something2", path: "http:something2", } ] }, { type_id: 2 type_name: "type example 2" image [ { product_id: 1, alt_text: "type 2 something", path: "http:something", }, { product_id: 1, alt_text: "type 2something2", path: "http:something2", }, { product_id: 1, alt_text: "something2", path: "http:something2", }, { product_id: 2, alt_text: "something2", path: "http:something2", }, { product_id: 3, alt_text: "something2", path: "http:something2", }, { product_id: 4, alt_text: "something2", path: "http:something2", }, { product_id: 4, alt_text: "something2", path: "http:something2", } ] } ] } 

表中的内容：

 Product Table: id title 1 product title 1 2 product title 2 3 product title 3 4 product title 4 5 product title 5 Product_image Table: product_id image_type_id path alt_text 1 1 http:something something 1 1 http:something2 something2 1 2 http:something type 2 something 1 2 http:something2 type 2 something2 2 1 http:something2 something2 3 1 http:something2 something2 4 1 http:something2 something2 4 1 http:something2 something2 2 2 http:something2 something2 3 2 http:something2 something2 4 2 http:something2 something2 4 2 http:something2 something2 Product_image_type Table: id type_name 1 type example 1 2 type example 2 

提前致谢！