Spring Boot 2.0 配置屬性自定義轉(zhuǎn)換的方法

package com.paderlol.spring.practice.properties.editor;

import com.paderlol.spring.practice.properties.pojo.Movie;
import java.beans.PropertyEditorSupport;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.PropertyEditorRegistrar;
import org.springframework.beans.PropertyEditorRegistry;

/**
 * @author pader PropertyEditor 在不同的包下面
 */
@Slf4j
public class CustomMovieEditor extends PropertyEditorSupport
implements PropertyEditorRegistrar {

  @Override
  public String getAsText() {
    Movie movie = (Movie) getValue();
    return movie == null ? "" : movie.getName();
  }

  @Override
  public void setAsText(String text) throws IllegalArgumentException {
    log.info("繼承[PropertyEditorSupport]類(lèi),轉(zhuǎn)換數(shù)據(jù)={}", text);
    String[] data = text.split("-");
    Movie movie = Movie.builder().name(data[0]
    .toUpperCase()).seat(Integer.parseInt(data[1]))
    .build();
    setValue(movie);
  }


  @Override
  public void registerCustomEditors(PropertyEditorRegistry registry) {
    registry.registerCustomEditor(Movie.class,this);
  }
}

@Bean
public CustomEditorConfigurer customEditorConfigurer() {
  CustomEditorConfigurer customEditorConfigurer = new CustomEditorConfigurer();   
   // 有兩種注冊(cè)方式 這是第一種
  customEditorConfigurer.setPropertyEditorRegistrars( 
    new PropertyEditorRegistrar[]{ new CustomMovieEditor() });
     // 第二 種
    Map<Class<?>,Class<? extends PropertyEditor>> maps = new HashMap<>();
    maps.put(Movie.class,CustomMovieEditor.class);

  return customEditorConfigurer;
}

//注意
@Component
@ConfigurationPropertiesBinding
public class StringToPersonConverter implements Converter<String, Person> {

  @Override
  public Person convert(String from) {
    log.info("使用[Converter]接口,轉(zhuǎn)換數(shù)據(jù)={}", from);
    String[] data = from.split(",");
    return Person.builder().name(data[0]).age(Integer.parseInt(data[1])).build();
  }
}

@Autowired(required = false)
@ConfigurationPropertiesBinding
public void setConverters(List<Converter<?, ?>> converters) {
   this.converters = converters;
}

/**
* A list of custom converters (in addition to the defaults) to use when
* converting properties for binding.
* @param converters the converters to set
*/
@Autowired(required = false)
@ConfigurationPropertiesBinding
public void setGenericConverters(List<GenericConverter> converters) {
this.genericConverters = converters;
 }

public ConversionService getConversionService() {
    try {
      //默認(rèn)首先尋找Bean名稱(chēng)叫conversionService的ConversionService的Bean類(lèi)
      return this.applicationContext.getBean(
          ConfigurableApplicationContext.CONVERSION_SERVICE_BEAN_NAME,
          ConversionService.class);
    }
    catch (NoSuchBeanDefinitionException ex) {
      //找不到就默認(rèn)生成ApplicationConversionService類(lèi)
      return this.applicationContext.getAutowireCapableBeanFactory()
          .createBean(Factory.class).create();
    }
}