Orika简单使用

使用orika进行对象间Mapping

1. 当两个类的属性名都一样

package com.orika;

/**
 * Title:CopiedStudent.java
 * Description:
 *
 * @author zhuyang
 * @version 1.0 2017/7/18
 */
public class CopiedStudent {
    private String name;
    private Integer age;

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public Integer getAge() {
        return age;
    }

    public void setAge(Integer age) {
        this.age = age;
    }

    @Override
    public String toString() {
        return "CopiedStudent{" +
                "name='" + name + '\'' +
                ", age=" + age +
                '}';
    }
}

package com.orika;

/**
 * Title:Student.java
 * Description:
 *
 * @author zhuyang
 * @version 1.0 2017/7/18
 */
public class Student {
    private Integer age;
    private String name;

    public Integer getAge() {
        return age;
    }

    public void setAge(Integer age) {
        this.age = age;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }
}

 /**
     * copy object which filed name is totally same
     * @param stu source student
     */
    public static void map1(Student stu){
        //since filed name is same, so no need to register
        MapperFactory factory  = new DefaultMapperFactory.Builder().build();
        CopiedStudent cs = factory.getMapperFacade(Student.class,CopiedStudent.class).map(stu);
        System.out.println("map1==="+cs);
    }

2.两个类的字段名不一样

package com.orika;

/**
 * Title:CopiedStudent2.java
 * Description:
 *
 * @author zhuyang
 * @version 1.0 2017/7/18
 */
public class CopiedStudent2 {
    private String name;
    private Integer copyAge;

    @Override
    public String toString() {
        return "CopiedStudent2{" +
                "name='" + name + '\'' +
                ", copyAge=" + copyAge +
                '}';
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public Integer getCopyAge() {
        return copyAge;
    }

    public void setCopyAge(Integer copyAge) {
        this.copyAge = copyAge;
    }
}

 /**
     * copy object which filed name is different
     * @param stu
     */
    public static void map2(Student stu){
        MapperFactory factory  = new DefaultMapperFactory.Builder().build();
        //since filed name is not same, so register is required
        ClassMapBuilder builder = factory.classMap(Student.class,CopiedStudent2.class);
        builder.field("age","copyAge");
        builder.byDefault().register();
        CopiedStudent2 cs2 = factory.getMapperFacade().map(stu,CopiedStudent2.class);
        System.out.println("map2==="+cs2);
    }

3. List拷贝

 public static void mapAsList(List<Student> studens){
        //register copiedStudent2, since Student and CopiedStudent2 are using different filed name, so register is required.
        MapperFactory factory = new DefaultMapperFactory.Builder().build();
        ClassMapBuilder builder = factory.classMap(Student.class,CopiedStudent2.class);
        builder.field("age","copyAge");// map field
        builder.byDefault().register();
        List<CopiedStudent2> copiedStudent2s = factory.getMapperFacade().mapAsList(studens,CopiedStudent2.class);
        copiedStudent2s.forEach(student ->{
            System.out.println("copiedStuden2 list = "+student);
        });
    }