orika：Java bean属性复制工具，底层基于javassist生成字段属性映射的字节码，运行时动态加载执行字节码，性能上比cglib的BeanCopier稍差。
Github地址：github.com/orika-mappe…
maven依赖
引入orika-core包
<dependency>
<groupId>ma.glasnost.orika</groupId>
<artifactId>orika-core</artifactId>
<version>1.5.4</version>
</dependency>
复制代码Java使用示例
<!-- 测试demo依赖 -->
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.18.22</version>
</dependency>
<dependency>
<groupId>org.junit.jupiter</groupId>
<artifactId>junit-jupiter</artifactId>
<version>5.8.1</version>
</dependency>
<dependency>
<groupId>com.google.guava</groupId>
<artifactId>guava</artifactId>
<version>29.0-jre</version>
</dependency>
复制代码常用操作：
package bean;
import com.google.common.collect.Lists;
import lombok.AllArgsConstructor;
import lombok.Builder;
import lombok.Data;
import lombok.NoArgsConstructor;
import lombok.experimental.Accessors;
import lombok.experimental.FieldNameConstants;
import ma.glasnost.orika.MapperFacade;
import ma.glasnost.orika.converter.ConverterFactory;
import ma.glasnost.orika.converter.builtin.DateToStringConverter;
import ma.glasnost.orika.impl.DefaultMapperFactory;
import org.junit.jupiter.api.Test;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.List;
import static org.junit.jupiter.api.Assertions.*;
/**
* The type Orika demo test.
*/
class OrikaDemoTest {
@Test
void testMap() {
DefaultMapperFactory mapperFactory = getMapperFactory();
MapperFacade facade = mapperFactory.getMapperFacade();
SourceClass source = getSourceClass();
// 基本使用
TargetClass target = facade.map(source, TargetClass.class);
compare(source, target);
assertNotEquals(source.getEmail(), target.getMyEmail());
}
@Test
void testMapAsList() {
DefaultMapperFactory mapperFactory = getMapperFactory();
MapperFacade facade = mapperFactory.getMapperFacade();
SourceClass source = getSourceClass();
// 集合映射
List<TargetClass> target = facade.mapAsList(Lists.newArrayList(source), TargetClass.class);
compare(source, target.get(0));
assertNotEquals(source.getEmail(), target.get(0).getMyEmail());
}
@Test
void testDiffFieldName() {
DefaultMapperFactory mapperFactory = getMapperFactory();
// 设置不同字段名双向映射
mapperFactory.classMap(SourceClass.class, TargetClass.class)
.field(SourceClass.Fields.email, TargetClass.Fields.myEmail)
.byDefault()
.register();
MapperFacade facade = mapperFactory.getMapperFacade();
SourceClass source = getSourceClass();
TargetClass target = facade.map(source, TargetClass.class);
compare(source, target);
assertEquals(source.getEmail(), target.getMyEmail());
}
@Test
void testConverter() throws ParseException {
String format = "yyyy-MM-dd";
DefaultMapperFactory mapperFactory = getMapperFactory();
// 设置类型转换
ConverterFactory converterFactory = mapperFactory.getConverterFactory();
converterFactory.registerConverter(new DateToStringConverter(format));
String birth = "2021-11-21";
Date date = new SimpleDateFormat(format).parse(birth);
SourceClass source = getSourceClass()
.setBirth(date);
MapperFacade facade = mapperFactory.getMapperFacade();
TargetClass target = facade.map(source, TargetClass.class);
compare(source, target);
assertEquals(birth, target.getBirth());
}
private DefaultMapperFactory getMapperFactory() {
return new DefaultMapperFactory.Builder().build();
}
private void compare(SourceClass source, TargetClass target) {
assertEquals(source.getId(), target.getId());
assertEquals(source.getName(), target.getName());
assertEquals(source.getAge(), target.getAge());
}
private SourceClass getSourceClass() {
return SourceClass.builder()
.id(1L)
.name("test")
.age(18)
.email("email@xxx")
.build();
}
@Data
@Builder
@NoArgsConstructor
@AllArgsConstructor
@FieldNameConstants
@Accessors(chain = true)
static class SourceClass {
private Long id;
private String name;
private Integer age;
private String email;
private Date birth;
}
@Data
@Builder
@NoArgsConstructor
@AllArgsConstructor
@FieldNameConstants
static class TargetClass {
private Long id;
private String name;
private int age;
private String myEmail;
private String birth;
}
}
复制代码