SpringBoot 去除jackson并整合Gson

修改pom.xml配置文件

<!--web-->
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-web</artifactId>
    <exclusions>
        <!--取消jackson-->
        <exclusion>
            <artifactId>jackson-databind</artifactId>
            <groupId>com.fasterxml.jackson.core</groupId>
        </exclusion>
    </exclusions>
</dependency>
<!--gson-->
<dependency>
    <groupId>com.google.code.gson</groupId>
    <artifactId>gson</artifactId>
</dependency>

创建配置类

@Configuration
@ConditionalOnClass(Gson.class)
@ConditionalOnMissingClass("com.fasterxml.jackson.core.JsonGenerator")
@ConditionalOnBean(Gson.class)
public class GsonHttpMessageConverterConfiguration {
    @Bean
    @ConditionalOnMissingBean
    public GsonHttpMessageConverter gsonHttpMessageConverter(Gson gson) {
        GsonHttpMessageConverter converter = new GsonHttpMessageConverter();
        converter.setGson(gson);
        return converter;
    }
}

修改启动方法

@SpringBootApplication(exclude = {JacksonAutoConfiguration.class})
public class SpringbootdemoApplication {

    public static void main(String[] args) {
        SpringApplication.run(SpringbootdemoApplication.class, args);
    }

}

补充

启动时可能会报错提示找不到ObjectMapper，取消Jackson可能会导致找不到com.fasterxml.jackson.databind.ObjectMapper类
pom.xml增加starter-json即可

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-json</artifactId>
</dependency>