springboot常见的config配置

package com.qf.config;

import com.fasterxml.jackson.databind.ObjectMapper;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
import org.springframework.web.servlet.config.annotation.ViewResolverRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;

import java.text.SimpleDateFormat;

@Configuration
public class MyWebMvcConfig implements WebMvcConfigurer {

重写方法
//    配置视图解析器
    @Override
    public void configureViewResolvers(ViewResolverRegistry registry) {
        registry.jsp().prefix("/jsp/")
                .suffix(".jsp");
    }
//  日期格式
    @Override
    public void configureMessageConverters(List> converters) {
        MappingJackson2HttpMessageConverter converter = new MappingJackson2HttpMessageConverter();
        ObjectMapper om = new ObjectMapper();
        om.setDateFormat(new SimpleDateFormat("yyyy-MM-dd"));
        converter.setObjectMapper(om);
        converters.add(0，converter);

    }



注册Bean
//    全局springbootd的配置日期格式
//    @Bean
//    ObjectMapper objectMapper(){
//        ObjectMapper om = new ObjectMapper();
//        om.setDateFormat(new SimpleDateFormat("yyyy-MM-dd"));
//        return om;
//    }

//    spring配置日期格式
    @Bean
    MappingJackson2HttpMessageConverter httpMessageConverter(){
        MappingJackson2HttpMessageConverter converter = new MappingJackson2HttpMessageConverter();
        ObjectMapper om = new ObjectMapper();
        om.setDateFormat(new SimpleDateFormat("yyyy-MM-dd"));
        converter.setObjectMapper(om);
        return converter;
    }
}

//    gson
    @Bean
    GsonBuilder builder(){
        return new GsonBuilder().setDateFormat("yyyy-MM-dd");
    }

//    fastjson配置

    @Bean
    FastJsonHttpMessageConverter httpMessageConverter(){
        FastJsonHttpMessageConverter converter = new FastJsonHttpMessageConverter();
        FastJsonConfig config = new FastJsonConfig();
        config.setCharset(Charset.forName("UTF-8"));
        config.setDateFormat("yyyy-MM-dd");
        converter.setFastJsonConfig(config);
//        这里还要设置一次
        converter.setDefaultCharset(Charset.forName("UTF-8"));
        return converter;
    }

}

配置gson

 配置类

 fastjson

    com.alibaba
    fastjson
    2.0.2