一舔涎、不返回null值
在yml配置文件中添加如下配置即可
jackson:
default-property-inclusion: non_null
二、遇到null值時返回空字符串捞稿，代碼如下
import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.databind.JsonSerializer;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.SerializerProvider;
import com.fasterxml.jackson.datatype.hibernate5.Hibernate5Module;
import com.fasterxml.jackson.module.afterburner.AfterburnerModule;
import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Primary;
import org.springframework.http.converter.json.Jackson2ObjectMapperBuilder;
import java.io.IOException;
@Configuration
public class JacksonConfiguration {
/**
* Support for Hibernate types in Jackson.
*/
@Bean
public Hibernate5Module hibernate5Module() {
return new Hibernate5Module();
}
/**
* Jackson Afterburner module to speed up serialization/deserialization.
*/
@Bean
public AfterburnerModule afterburnerModule() {
return new AfterburnerModule();
}
@Bean
@Primary
@ConditionalOnMissingBean(ObjectMapper.class)
public ObjectMapper jacksonObjectMapper(Jackson2ObjectMapperBuilder builder) {
ObjectMapper objectMapper = builder.createXmlMapper(false).build();
objectMapper.getSerializerProvider().setNullValueSerializer(new JsonSerializer<Object>() {
@Override
public void serialize(Object o, JsonGenerator jsonGenerator, SerializerProvider serializerProvider) throws IOException {
jsonGenerator.writeString("");
}
});
return objectMapper;
}
}
