springmvc封装请求为实体类的时候，将String转化为String[]时效果不理想

如图所示，寻找解决方案ing

我最近在看源码，已经看到org.springframework.web.method.annotation.ModelAttributeMethodProcessor.resolveArgument(MethodParameter, ModelAndViewContainer, NativeWebRequest, WebDataBinderFactory)了

记下来，下次接着看

看完了，直接上解决方案

/**
 * 
 */
package com.grc.common.converter;
import org.springframework.core.convert.converter.Converter;
/**
 * @author Lille
 * @time 2021年11月13日 下午4:02:50
 */
public class StringToStringArrayConverter implements Converter<String,String[]> {

	@Override
	public String[] convert(String source) {
		if(source==null) {
			return new String[0];
		}else {
			return new String[] {source};
		}
	}
}

 

/**
 * 
 */
package red.lille.makecode.configuration;

import javax.annotation.Resource;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.convert.converter.Converter;
import org.springframework.format.FormatterRegistry;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;

import com.grc.common.converter.StringToStringArrayConverter;
import com.grc.common.properties.SysConfig;
import com.grc.common.properties.XMLProperties;

/**
 * @author Lille
 *
 */
@Configuration
@EnableWebMvc
public class XmlConfiguration implements WebMvcConfigurer{
	@Resource(name = "stringToStringArrayConverter")
	private Converter<String, String[]> stringToStringArrayConverter;

	@Bean("stringToStringArrayConverter")
	public StringToStringArrayConverter getStringToStringArrayConverter() {
		return new StringToStringArrayConverter();
	}
	@Override
	public void addFormatters(FormatterRegistry registry) {
		registry.addConverter(stringToStringArrayConverter);
    }
}