Java Bean对象互相转换

Maven依赖

       <dependency>
            <groupId>net.sf.dozer</groupId>
            <artifactId>dozer-spring</artifactId>
            <version>5.5.1</version>
        </dependency>
        <dependency>
            <groupId>net.sf.dozer</groupId>
            <artifactId>dozer</artifactId>
            <version>5.5.1</version>
        </dependency>

Resources目录下创建 dozer目录和MATE-INFO

• 目录下创建两个配置文件 bean-mappings.xml 和 global-configuration.xml
• bean-mappings.xml

<?xml version="1.0" encoding="UTF-8"?>
<mappings xmlns="http://dozer.sourceforge.net" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xsi:schemaLocation="http://dozer.sourceforge.net
          http://dozer.sourceforge.net/schema/beanmapping.xsd">
</mappings>

• global-configuration.xml

<?xml version="1.0" encoding="UTF-8"?>
<mappings xmlns="http://dozer.sourceforge.net" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xsi:schemaLocation="http://dozer.sourceforge.net
          http://dozer.sourceforge.net/schema/beanmapping.xsd">
    <configuration>
        <date-format>yyyy-MM-dd HH:mm:ss</date-format>
        <wildcard>true</wildcard>
        <trim-strings>false</trim-strings>
    </configuration>
</mappings>

MATE-INFO下创建spring目录并创建org.springframework.boot.autoconfigure.AutoConfiguration.imports 文件 其内容为 com.shop.config.DozerMapperConfig

创建配置类DozerMapperConfig

package com.system.config;

import org.dozer.spring.DozerBeanMapperFactoryBean;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.io.Resource;


@Configuration
public class DozerMapperConfig {
  @Bean
  public DozerBeanMapperFactoryBean dozerBeanMapperFactoryBean(@Value("classpath*:dozer/*.xml") Resource[] resources) throws Exception {
    DozerBeanMapperFactoryBean dozerBeanMapperFactoryBean = new DozerBeanMapperFactoryBean();
    dozerBeanMapperFactoryBean.setMappingFiles(resources);
    return dozerBeanMapperFactoryBean;
  }

}

创建接口 Generator

/**
 * Copyright (C) 2018-2022
 * All rights reserved, Designed By www.yixiang.co
 * 注意：
 * 本软件为www.yixiang.co开发研制
 */
package com.system.common.dozer;

import com.system.entity.base.PagEntity;

import java.util.List;
import java.util.Set;


public interface Generator {

  /**
   * 转换
   *
   * @param s   数据对象
   * @param clz 复制目标类型
   * @return {@link T}
   * @Description: 单个对象的深度复制及类型转换，vo/domain , po
   * @author banjuer@outlook.com
   * @Time 2018年5月9日 下午3:53:24
   */
  <T, S> T convert(S s, Class<T> clz);

  /**
   * @Description: 深度复制结果集(ResultSet为自定义的分页结果集)
   * @param s 数据对象
   * @param clz 复制目标类型
   * @return
   * @author banjuer@outlook.com
   * @Time 2018年5月9日 下午3:53:24
   */
  //<T, S> Result<T> convert(Result<S> s, Class<T> clz);

  /**
   * 转换
   *
   * @param s   数据对象
   * @param clz 复制目标类型
   * @return {@link List<T>}
   * @Description: list深度复制
   * @author banjuer@outlook.com
   * @Time 2018年5月9日 下午3:54:08
   */
  <T, S> List<T> convert(List<S> s, Class<T> clz);

  /**
   * @param s
   * @param clz
   * @param <T>
   * @param <S>
   * @return
   */
  <T, S> PagEntity<T> convertPaging(PagEntity<S> s, Class<T> clz);

  /**
   * @param s   数据对象
   * @param clz 复制目标类型
   * @return
   * @Description: set深度复制
   * @author banjuer@outlook.com
   * @Time 2018年5月9日 下午3:54:39
   */
  <T, S> Set<T> convert(Set<S> s, Class<T> clz);

  /**
   * @param s   数据对象
   * @param clz 复制目标类型
   * @return
   * @Description: 数组深度复制
   * @author banjuer@outlook.com
   * @Time 2018年5月9日 下午3:54:57
   */
  <T, S> T[] convert(S[] s, Class<T> clz);


}

创建Generator 接口的实现类GeneratorImpl

/**
 * Copyright (C) 2018-2022
 * All rights reserved, Designed By www.yixiang.co
 * 注意：
 * 本软件为www.yixiang.co开发研制
 */
package com.system.common.dozer;

import com.system.entity.base.PagEntity;
import org.dozer.Mapper;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Lazy;
import org.springframework.stereotype.Component;

import java.lang.reflect.Array;
import java.util.List;
import java.util.Set;
import java.util.stream.Collectors;

@Component
@Lazy(true)
public class GeneratorImpl implements Generator {

  @Autowired
  protected Mapper dozerMapper;

  @Override
  public <T, S> T convert(S s, Class<T> clz) {
    return s == null ? null : dozerMapper.map(s, clz);
  }

  @Override
  public <T, S> List<T> convert(List<S> s, Class<T> clz) {
    return s == null ? null : s.stream().map(vs -> dozerMapper.map(vs, clz)).collect(Collectors.toList());
  }

  @Override
  public <T, S> PagEntity<T> convertPaging(PagEntity<S> paging, Class<T> clz) {
    PagEntity<T> pagingVo = new PagEntity<>();
    pagingVo.setRecords(convert(paging.getRecords(), clz));
    pagingVo.setTotal(paging.getTotal());
    return pagingVo;
  }

  @Override
  public <T, S> Set<T> convert(Set<S> s, Class<T> clz) {
    return s == null ? null : s.stream().map(vs -> dozerMapper.map(vs, clz)).collect(Collectors.toSet());
  }

  @Override
  public <T, S> T[] convert(S[] s, Class<T> clz) {
    if (s == null) {
      return null;
    }
    @SuppressWarnings("unchecked")
    T[] arr = (T[]) Array.newInstance(clz, s.length);
    for (int i = 0; i < s.length; i++) {
      arr[i] = dozerMapper.map(s[i], clz);
    }
    return arr;
  }

}

使用其进行实体类转换

  @Resource
  private Generator generator;
 public Long addBanner(BannerVo banner) throws ServerExcption {
    Banner convert = generator.convert(banner, Banner.class);
    convert.setType(0);
    Date date = new Date();
    convert.setCreateTime(date);
    convert.setUpdateTime(date);
    bannerMapper.insert(convert);
    return convert.getId();
  }

至此完成