要在Spring Boot中配置Fastjson,可以通过以下步骤:
添加Fastjson的依赖项到pom.xml文件中:<dependency> <groupId>com.alibaba</groupId> <artifactId>fastjson</artifactId> <version>1.2.78</version></dependency>创建一个配置类来配置Fastjson:import com.alibaba.fastjson.support.spring.FastJsonHttpMessageConverter;import org.springframework.context.annotation.Configuration;import org.springframework.http.converter.HttpMessageConverter;import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;import java.util.List;@Configurationpublic class FastjsonConfig implements WebMvcConfigurer { @Override public void configureMessageConverters(List<HttpMessageConverter<?>> converters) { FastJsonHttpMessageConverter fastConverter = new FastJsonHttpMessageConverter(); converters.add(fastConverter); }}在application.properties或application.yml文件中添加以下配置项:# 使用Fastjson作为JSON解析器spring.mvc.converters.preferred-json-mapper=fastjson这样就可以在Spring Boot应用中使用Fastjson作为JSON解析器。