SpringMVC日期解析问题（SON parse error: Cannot deserialize value of type `java.util.Date` from String.....）

问题：

JSON parse error: Cannot deserialize value of type java.util.Date from String “2016-10-05”: not a valid representation (error: Failed to parse Date value ‘2016-10-05’: Unparseable date: “2016-10-05”); nested exception is com.fasterxml.jackson.databind.exc.InvalidFormatException: Cannot deserialize value of type java.util.Date from String “2016-10-05”: not a valid representation (error: Failed to parse Date value ‘2016-10-05’: Unparseable date: “2016-10-05”) at [Source: (PushbackInputStream); line: 1, column: 83] (through reference chain: com.ztax.ifrs9.param.entity.ProspecRf[“availabilityDate”])]

原因：

接收前端的日期格式为java.lang.String，然而对象中是java.util.Date，所以无法将字符串格式的日期值解析为日期格式

解决：

添加配置类如下

import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.List;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.MediaType;
import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
import com.fasterxml.jackson.databind.ObjectMapper;
 
@Configuration
public class WebConfig {
	@Bean
    public MappingJackson2HttpMessageConverter getMappingJackson2HttpMessageConverter() {
    	MappingJackson2HttpMessageConverter mappingJackson2HttpMessageConverter = new MappingJackson2HttpMessageConverter();
    	//日期格式
    	ObjectMapper objectMapper = new ObjectMapper();
    	SimpleDateFormat smt = new SimpleDateFormat("yyyy-MM-dd");
    	objectMapper.setDateFormat(smt);
    	mappingJackson2HttpMessageConverter.setObjectMapper(objectMapper);
    	//编码格式
    	List<MediaType> list = new ArrayList<MediaType>();
    	list.add(MediaType.APPLICATION_JSON_UTF8);
    	mappingJackson2HttpMessageConverter.setSupportedMediaTypes(list);
    	return mappingJackson2HttpMessageConverter;
    }
}
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