MapStruct实体间转换的简单用法

<properties>
<org.mapstruct.version>1.2.0.CR1</org.mapstruct.version>
</properties>

<dependencies>
  <dependency>
    <groupId>org.mapstruct</groupId>
    <artifactId>mapstruct-jdk8</artifactId>
    <version>${org.mapstruct.version}</version>
  </dependency>
</dependencies>

<build>
  <plugins>
    <plugin>
<groupId>org.apache.maven.plugins</groupId>
      <artifactId>maven-compiler-plugin</artifactId>
      <version>3.5.1</version>
      <configuration>
        <source>1.8</source>
        <target>1.8</target>
        <annotationProcessorPaths>
          <path>
  <groupId>org.mapstruct</groupId>
            <artifactId>mapstruct-processor</artifactId>
        <version>${org.mapstruct.version}</version>
          </path>
        </annotationProcessorPaths>
      </configuration>
    </plugin>
  </plugins>
</build>

public class User {
  private int id;
  private String name;
  private boolean married;
// setters, getters, toString
}

public class Employee {
  private int id;
  private String name;
  private String position;
  private boolean married;
// setters, getters, toString
}

@Mapper
public interface UserMapper {
  UserMapper INSTANCE = Mappers.getMapper(UserMapper.class);
  Employee userToEmployee(User user);
  User employeeToUser(Employee employee);
}

import com.training.mapstrut.model.Employee;
import com.training.mapstrut.model.User;
import javax.annotation.Generated;
@Generated(
  value = "org.mapstruct.ap.MappingProcessor",
  date = "2017-08-26T17:08:23+0800",
  comments = "version: 1.2.0.CR1, compiler: javac, environment: Java 1.8.0_92 (Oracle Corporation)"
)
public class UserMapperImpl implements UserMapper {
  @Override
  public Employee userToEmployee(User user) {
    if ( user == null ) {
      return null;
    }
    Employee employee = new Employee();
    employee.setId( user.getId() );
    employee.setName( user.getName() );
    employee.setMarried( user.isMarried() );
    return employee;
  }
  @Override
  public User employeeToUser(Employee employee) {
    if ( employee == null ) {
      return null;
    }
    User user = new User();
    user.setId( employee.getId() );
    user.setName( employee.getName() );
    user.setMarried( employee.isMarried() );
    return user;
  }
}

public class AppTest{
  @Test
  public void appTest(){
    User user = new User();
    user.setId(125);
    user.setName("Chao");
    user.setMarried(false);
    Employee e = UserMapper.INSTANCE.userToEmployee(user);
    System.out.println(e);
    Assert.assertFalse(e.isMarried());
  }
}