【Dozer】实现数据映射

最新推荐文章于 2024-11-19 15:50:05 发布

kwin_zhang

最新推荐文章于 2024-11-19 15:50:05 发布

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分类专栏： Java面试题集

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本文介绍了如何在项目中引入Dozer库，通过配置pom文件添加依赖，然后展示了两个实体类EmployeeInfo和EmployeeVo，最后给出了具体的测试代码，详细解释了Dozer在数据映射中的应用。

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在pom文件中引入依赖

        <dependency>
            <groupId>com.github.dozermapper</groupId>
            <artifactId>dozer-core</artifactId>
            <version>6.2.0</version>
        </dependency>

测试类中用到的实体类：

@Data
@NoArgsConstructor
@AllArgsConstructor
public class Employee {

    private Integer id;

    private String name;

    private  Integer age;

    private double salary;
}

EmployeeInfo ：

import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;

/**
 * @author： kevin_zhang
 * @date： 2020/2/25 0025 11:02
 * @Description:
 */
@Data
@NoArgsConstructor
@AllArgsConstructor
public class EmployeeInfo {

    private Integer id;

    private String phone;

    private String email;

}

EmployeeVo :

import lombok.Data;

/**
 * @author： kevin_zhang
 * @date： 2020/2/25 0025 10:59
 * @Description:
 */
@Data
public class EmployeeVo {
    private Integer id;

    private String name;

    private  Integer age;

    private double salary;

    private String phone;

    private String email;

    private String dept;

    public String getPhone() {
        return phone;
    }

    public void setPhone(String phone) {
        this.phone = phone;
    }

    public String getEmail() {
        return email;
    }

    public void setEmail(String email) {
        this.email = email;
    }

    public String getDept() {
        return dept;
    }

    public void setDept(String dept) {
        this.dept = dept;
    }
}

测试代码：

package com.example.es;

import com.example.bean.Employee;
import com.example.bean.EmployeeInfo;
import com.example.bean.EmployeeVo;
import org.dozer.DozerBeanMapperBuilder;
import org.junit.Test;
import org.springframework.util.ObjectUtils;

import java.util.ArrayList;
import java.util.List;

/**
 * @author： kevin_zhang
 * @date： 2020/1/22 0022 22:07
 * @Description: 对象复制
 */
public class TestDozer {

    @Test
    public void test() {
        List<Employee> list = new ArrayList<>(4);
        list.add(new Employee(1, "zhangsan", 23, 888.1));
        list.add(new Employee(2, "lisi", 23, 8788.1));
        list.add(new Employee(3, "wangwu", 23, 87888.1));
        list.add(new Employee(4, "zhaoliu", 23, 8888.1));

        List<EmployeeInfo> infos = new ArrayList<>(4);

        infos.add(new EmployeeInfo(1, "13322221111", "1@q.com"));
        infos.add(new EmployeeInfo(2,  "13322222222", "2@q.com"));
        infos.add(new EmployeeInfo(3,  "13322223333", "3@q.com"));
        infos.add(new EmployeeInfo(4, "13322223334", "3@q.com"));
        List<EmployeeVo> employeeVos = new ArrayList<>();
        list.forEach(employee -> {
            EmployeeVo employeeVo = DozerBeanMapperBuilder.buildDefault().map(employee, EmployeeVo.class);
            infos.forEach(employeeInfo-> {
                if (ObjectUtils.nullSafeEquals(employee.getId(), employeeInfo.getId())) {
                    employeeVo.setPhone(employeeInfo.getPhone());
                    employeeVo.setEmail(employeeInfo.getEmail());
                    return;
                }
            });
            employeeVos.add(employeeVo);

        });
        System.out.println(employeeVos);
    }
}