项目地址：https://github.com/mapstruct/mapstruct
说明：mapstruct通过直接生成Getter/Setter方法，所以与原生调用效率基本一致
生成的代码maven是在 target\generated-sources\annotations 目录。

依赖

同时用到了lombok

  1. <lombok.version>1.18.12</lombok.version>
  2. <org.mapstruct.version>1.4.2.Final</org.mapstruct.version>
  3. <m2e.apt.activation>jdt_apt</m2e.apt.activation>
  5. <dependency>
  6.   <groupId>org.projectlombok</groupId>
  7.   <artifactId>lombok</artifactId>
  8.   <version>${lombok.version}</version>
  9. </dependency>
  10. <dependency>
  11.   <groupId>org.mapstruct</groupId>
  12.   <artifactId>mapstruct</artifactId>
  13.   <version>${org.mapstruct.version}</version>
  14.   <scope>compile</scope>
  15. </dependency>
  16. <dependency>
  17.   <groupId>org.mapstruct</groupId>
  18.   <artifactId>mapstruct-jdk8</artifactId>
  19.   <version>${org.mapstruct.version}</version>
  20.   <scope>compile</scope>
  21. </dependency>
  22. <dependency>
  23.   <groupId>org.mapstruct</groupId>
  24.   <artifactId>mapstruct-processor</artifactId>
  25.   <version>${org.mapstruct.version}</version>
  26.   <scope>compile</scope>
  27.   <optional>true</optional>
  28. </dependency>
  30. <plugin>
  31.   <groupId>org.apache.maven.plugins</groupId>
  32.   <artifactId>maven-compiler-plugin</artifactId>
  33.   <configuration>
  34.     <annotationProcessorPaths>
  35.       <path>
  36.         <groupId>org.mapstruct</groupId>
  37.         <artifactId>mapstruct-processor</artifactId>
  38.         <version>${org.mapstruct.version}</version>
  39.       </path>
  40.       <path>
  41.         <groupId>org.projectlombok</groupId>
  42.         <artifactId>lombok</artifactId>
  43.         <version>${lombok.version}</version>
  44.       </path>
  45.     </annotationProcessorPaths>
  46.   </configuration>
  47. </plugin>

示例

  1. //class MpsVOMp
  2. import org.mapstruct.Mapper;
  3. import org.mapstruct.Mapping;
  4. import org.mapstruct.factory.Mappers;
  6. @Mapper(componentModel = "spring")
  7. //@Mapper
  8. public interface MpsVOMp {
  9.     /**
  10.      * 用来调用实例 实际开发中可使用注入Spring 不写
  11.      */
  12.     MpsVOMp CAR_MAPPING = Mappers.getMapper(MpsVOMp.class);
  14.     /**
  15.      * 源类型 目标类型 成员变量相同类型 相同变量名 不用写{@link org.mapstruct.Mapping}来映射
  16.      */
  17.     @Mapping(source = "string1", target = "string2")
  18.     @Mapping(source = "fromVo", target = "toVo")
  19.     MpsToVO mapper(MpsFromVO fromVO);
  20. }
  21. //class MpsFromVO
  22. import java.math.BigDecimal;
  23. import java.util.Date;
  25. import lombok.Data;
  27. @Data
  28. public class MpsFromVO {
  29.     private int            int1;
  30.     private Integer        int2;
  31.     private long        long1;
  32.     private Long        long2;
  33.     private double        double1;
  34.     private BigDecimal    double2;
  35.     private String        string1;
  36.     private Date        date1;
  37.     private boolean        bool1;
  38.     private Boolean        bool2;
  39.     private MpsFromVO    fromVo;
  40. }
  42. //class MpsToVO
  43. import java.math.BigDecimal;
  44. import java.util.Date;
  46. import lombok.Data;
  48. @Data
  49. public class MpsToVO {
  50.     private int            int1;
  51.     private Integer        int2;
  52.     private long        long1;
  53.     private Long        long2;
  54.     private double        double1;
  55.     private BigDecimal    double2;
  56.     private String        string1;
  57.     private Date        date1;
  58.     private boolean        bool1;
  59.     private Boolean        bool2;
  60.     //
  61.     private String        string2;
  62.     private MpsToVO        toVo;
  63. }