https://github.com/onlyeat3/fastmapper

超快的对象和属性映射工具.Blazing fast object and attribute mapping tool
https://github.com/onlyeat3/fastmapper

Last synced: about 2 months ago
JSON representation

超快的对象和属性映射工具.Blazing fast object and attribute mapping tool

• Host: GitHub
• URL: https://github.com/onlyeat3/fastmapper
• Owner: onlyeat3
• License: mit
• Created: 2020-09-15T06:49:58.000Z (about 4 years ago)
• Default Branch: master
• Last Pushed: 2023-12-05T22:29:19.000Z (10 months ago)
• Last Synced: 2024-05-05T05:32:17.823Z (5 months ago)
• Language: Java
• Size: 39.1 KB
• Stars: 0
• Watchers: 0
• Forks: 0
• Open Issues: 2
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

Awesome Lists containing this project

• awesome-blazingly-fast - fastmapper - 超快的对象和属性映射工具.Blazing fast object and attribute mapping tool (Java)

README

        
# fastmapper

对象映射工具

## 特性

- [x] Java 8+

- [x] 自定义类型转换方式

- [x] 支持多层级对象拷贝(实验特性)

- [x] 泛型支持

## 使用说明

添加依赖到pom.xml

```xml

  io.github.onlyeat3

  fastmapper

  0.0.1

```

```java

//bean to map

Map map = FastMapper.map(foo, new ClassReference>() {});

```

```java

//map to bean

Foo foo = FastMapper.map(map, Foo.class);

```

```java

//bean to bean

Bar bar = FastMapper.map(foo, Bar.class);

```

```java

//属性拷贝(忽略空的属性)

FastMapper.populate(foo,bar);

```

```java

//类方式写一个自定义TypeMapper（推荐）

@Order(5)//指定优先级，数字越小越靠前，但非预置转换器的优先级不会超过预置的

public class BigIntegerToLongTypeMapper implements TypeMapper {

    @Override

    public boolean match(MappingInfo mappingInfo) {

        return mappingInfo.getSourceType().getRawClass().equals(BigInteger.class) && mappingInfo.getTargetType().getRawClass().equals(Long.class);

    }

    @Override

    public Long map(MappingInfo mappingInfo) {

        return mappingInfo.getSource().longValue();

    }

}

FastMapper.registerTypeMapper(new BigIntegerToLongTypeMapper())

//lambda方式写自定义TypeMapper,从SomeEnum转换到Long，这样写会另外注册一个从Long到SomeEnum的TypeMapper

FastMapper.registerTypeMapper(SomeEnum.class, Long.class, someEnum-> someEnum.getValue().longValue(), aLong -> SomeEnum.valueOf(aLong.intValue()))

```

```java

//to list

List list = FastMapper.map(fooList, new TypeReference>() {});

```

```java

//泛型

List list = FastMapper.map(fooList, new TypeReference>() {});

```

以上就是全部功能,按照已有需求提前预置了一些`TypeMapper`，这些`TypeMapper`无法满足需要时可以自己添加`TypeMapper`，也可以在`ISSUE`提需求，由我来添加。

`fastmapper`不建议把bean写的嵌套过多，最好是单层的，但为了对付一些无奈的场景，还是提供了简单的深层拷贝支持.不需要额外配置，直接使用即可。