1.先在项目中添加fastjson依赖：

?
1
2
3
4
5
<dependency>
    <groupId>com.alibaba</groupId>
    <artifactId>fastjson</artifactId>
    <version>${fastjson.version}</version>
</dependency>

2.1第一种方法，让入口类实现WebMvcConfigure接口，并重写configureMessageConverters方法：

?
1
2
3
public class App implements WebMvcConfigurer{
     ...... 
}
重写方法：
?
1
2
3
4
5
6
7
8
9
10
11
12
13
14
public void configureMessageConverters(List<HttpMessageConverter<?>> converters) {
        //第一种配置fastJson方法
        FastJsonHttpMessageConverter fastJsonHttpMessageConverter = new FastJsonHttpMessageConverter();
        FastJsonConfig fastJsonConfig = new FastJsonConfig();
        fastJsonConfig.setSerializerFeatures(SerializerFeature.PrettyFormat);
        //处理中文乱码问题
        List<MediaType> fastMediaTypes = new ArrayList<MediaType>();
        fastMediaTypes.add(MediaType.APPLICATION_JSON_UTF8);
        fastJsonHttpMessageConverter.setSupportedMediaTypes(fastMediaTypes);
         
        fastJsonHttpMessageConverter.setFastJsonConfig(fastJsonConfig);
        converters.add(fastJsonHttpMessageConverter);
         
}

2.2第二种方法，直接在入口类加入@Bean注解并加入方法：

?
1
2
3
4
5
6
7
8
9
10
11
12
13
@Bean
public HttpMessageConverters fastJsonHttpMessage() {
        FastJsonHttpMessageConverter fastJsonHttpMessageConverter = new FastJsonHttpMessageConverter();
        FastJsonConfig fastJsonConfig = new FastJsonConfig();
        fastJsonConfig.setSerializerFeatures(SerializerFeature.PrettyFormat);
        //处理中文乱码问题
        List<MediaType> fastMediaTypes = new ArrayList<MediaType>();
        fastMediaTypes.add(MediaType.APPLICATION_JSON_UTF8);
        fastJsonHttpMessageConverter.setSupportedMediaTypes(fastMediaTypes);
         
        fastJsonHttpMessageConverter.setFastJsonConfig(fastJsonConfig);
        return new HttpMessageConverters(fastJsonHttpMessageConverter);
}