方案一：启动类继承WebMvcConfigurerAdapter,覆盖方法configureMessageConverters
...
@SpringBootApplication
public class UserApplication extends WebMvcConfigurerAdapter{ @Override
public void configureMessageConverters(List<HttpMessageConverter<?>> converters) {
super.configureMessageConverters(converters); // 初始化转换器
FastJsonHttpMessageConverter fastConvert = new FastJsonHttpMessageConverter();
// 初始化一个转换器配置
FastJsonConfig fastJsonConfig = new FastJsonConfig();
//用于美化格式，可注释掉 fastJsonConfig.setSerializerFeatures(SerializerFeature.PrettyFormat);
// 将配置设置给转换器并添加到HttpMessageConverter转换器列表中
fastConvert.setFastJsonConfig(fastJsonConfig); converters.add(fastConvert);
} public static void main(String[] args) {
SpringApplication.run(UserApplication.class, args);
}
}
方案二：在启动类中注入 HttpMessageConverters
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@SpringBootApplication
public class UserApplication {
/**
* 配置FastJson为Spring Boot默认JSON解析框架
* @return HttpMessageConverters
*/
@Bean
public HttpMessageConverters fastJsonHttpMessageConverters() {
// 1.定义一个converters转换消息的对象
FastJsonHttpMessageConverter fastConverter = new FastJsonHttpMessageConverter();
// 2.添加fastjson的配置信息，比如: 是否需要格式化返回的json数据
FastJsonConfig fastJsonConfig = new FastJsonConfig();
fastJsonConfig.setSerializerFeatures(SerializerFeature.PrettyFormat);
// 3.在converter中添加配置信息
fastConverter.setFastJsonConfig(fastJsonConfig);
// 4.将converter赋值给HttpMessageConverter
HttpMessageConverter<?> converter = fastConverter;
// 5.返回HttpMessageConverters对象
return new HttpMessageConverters(converter);
}
public static void main(String[] args) {
SpringApplication.run(UserApplication.class, args);
}
}
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