dozer的使用

2024-01-28 09:49:28

<dependency>
     <groupId>com.github.dozermapper</groupId>
     <artifactId>dozer-core</artifactId>
     <version>6.5.2</version>
</dependency>

pom文件导入dozer相关的依赖
在resource下创建 dozer对应的 xml 配置文件

<mappings xmlns="http://dozermapper.github.io/schema/bean-mapping"
          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xsi:schemaLocation="http://dozermapper.github.io/schema/bean-mapping http://dozermapper.github.io/schema/bean-mapping.xsd">
    <mapping>
        <class-a>com.aila.vo.OrderVo</class-a>
        <class-b>com.aila.bo.OrderBo</class-b>
        <field>
            <a>orderVoExtList</a>
            <b>orderBoExtList</b>
        </field>
    </mapping>
</mappings>

实体类相关代码

package com.aila.vo;

import lombok.Data;
import lombok.EqualsAndHashCode;
import lombok.experimental.Accessors;

import java.util.List;

/**
 * @author chenzhichao
 * @date 2021/7/7 9:33
 */
@Data
@EqualsAndHashCode(callSuper = false)
@Accessors(chain = true)
public class OrderVo {
    private String name;
    private List<OrderVoExt> orderVoExtList;
}

package com.aila.vo;

import lombok.Data;
import lombok.EqualsAndHashCode;
import lombok.experimental.Accessors;

import java.util.List;

/**
 * @author chenzhichao
 * @date 2021/7/7 9:33
 */
@Data
@EqualsAndHashCode(callSuper = false)
@Accessors(chain = true)
public class OrderVoExt {
    private Long skuId;
    private List<Long> numberList;
    private OrderVoExtComplex voComplex;
}

package com.aila.vo;

import lombok.Data;
import lombok.EqualsAndHashCode;
import lombok.experimental.Accessors;

/**
 * @author chenzhichao
 * @date 2021/7/7 9:42
 */
@Data
@EqualsAndHashCode(callSuper = false)
@Accessors(chain = true)
public class OrderVoExtComplex {
    private String value;
}

package com.aila.bo;

import lombok.Data;
import lombok.EqualsAndHashCode;
import lombok.experimental.Accessors;

import java.util.List;

/**
 * @author chenzhichao
 * @date 2021/7/7 9:33
 */
@Data
@EqualsAndHashCode(callSuper = false)
@Accessors(chain = true)
public class OrderBo {
    private String name;
    private List<OrderBoExt> orderBoExtList;
}

package com.aila.bo;

import lombok.Data;
import lombok.EqualsAndHashCode;
import lombok.experimental.Accessors;

import java.util.List;

/**
 * @author chenzhichao
 * @date 2021/7/7 9:33
 */
@Data
@EqualsAndHashCode(callSuper = false)
@Accessors(chain = true)
public class OrderBoExt {
    private Long skuId;
    private List<Long> numberList;
    private OrderBoExtComplex boComplex;
}

package com.aila.bo;

import lombok.Data;
import lombok.EqualsAndHashCode;
import lombok.experimental.Accessors;

/**
 * @author chenzhichao
 * @date 2021/7/7 9:41
 */
@Data
@EqualsAndHashCode(callSuper = false)
@Accessors(chain = true)
public class OrderBoExtComplex {
    private String value;
}

测试类相关代码

import com.aila.MyBootApplication;
import com.aila.bo.OrderBo;
import com.aila.vo.OrderVo;
import com.aila.vo.OrderVoExt;
import com.aila.vo.OrderVoExtComplex;
import com.github.dozermapper.core.Mapper;
import com.google.gson.Gson;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;

import javax.annotation.Resource;
import java.util.Arrays;

/**
 * @author chenzhichao
 * @date 2021/6/18 15:09
 */
@RunWith(SpringRunner.class)
@SpringBootTest(classes = MyBootApplication.class)
public class MyTestYy {
    /*@Resource
    private RedissonClient redisson;*/
    @Resource
    private Mapper mapper;
    @Resource
    private Gson gson;
    @Test
    public void test(){
        /*RKeys keys = redisson.getKeys();
        System.out.println(keys);
        String key="123";
        MyWork002 work002 = new MyWork002();
        MyTask002 myTask002 = new MyTask002("A", key, redisson,work002);
        MyTask002 myTask003 = new MyTask002("B", key, redisson,work002);
        new Thread(myTask002).start();
        new Thread(myTask003).start();
        System.out.println("123");*/
    }
    @Test
    public void dozerTest(){

        OrderVo vo = new OrderVo();
        vo.setName("testName");
        OrderVoExt voExt = new OrderVoExt();
        voExt.setSkuId(3L).setNumberList(Arrays.asList(1L,2L,3L));
        OrderVoExtComplex extComplex = new OrderVoExtComplex();
        extComplex.setValue("testValues");
        voExt.setVoComplex(extComplex);
        vo.setOrderVoExtList(Arrays.asList(voExt));
        OrderBo bo = mapper.map(vo, OrderBo.class);
        String json = gson.toJson(bo);
        System.out.println(json);

    }

}

结果：

结论1：如果两个对象之间的属性名称不一致不能直接转换，但是可以通过xml来指定需要转换的对象
但是不清楚如果指定的两个属性都是复杂属性是否也能通过xml 进行转换
继续测试
向xml中添加 ext的xml配置

<mappings xmlns="http://dozermapper.github.io/schema/bean-mapping"
          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xsi:schemaLocation="http://dozermapper.github.io/schema/bean-mapping http://dozermapper.github.io/schema/bean-mapping.xsd">
    <mapping>
        <class-a>com.aila.vo.OrderVo</class-a>
        <class-b>com.aila.bo.OrderBo</class-b>
        <field>
            <a>orderVoExtList</a>
            <b>orderBoExtList</b>
        </field>
    </mapping>
    <mapping>
        <class-a>com.aila.vo.OrderVoExt</class-a>
        <class-b>com.aila.bo.OrderBoExt</class-b>
        <field>
            <a>voComplex</a>
            <b>boComplex</b>
        </field>
    </mapping>
</mappings>

执行代码结果：

结论：如果转化的成员属性是复杂对象则需要在配置这个复杂对象的转化对象否则无法转化

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