Spring boot的前端String到后端Timestamp的转换

偏执的太偏执、 2022-03-27 10:40 415阅读 0赞

学习springboot过程中，前端提交关于yy-mm-nn aa:bb:cc这种的字符串  
必须在后台定义转换

其中一种方法是定义一个全局转换器

package com.example.demo.config;
    
    import com.fasterxml.jackson.databind.JavaType;
    import com.fasterxml.jackson.databind.type.TypeFactory;
    import com.fasterxml.jackson.databind.util.Converter;
    import org.springframework.stereotype.Component;
    
    
    import java.sql.Timestamp;
    
    @Component
    public class StringToDate implements Converter<String,Timestamp> {
        @Override
        public Timestamp convert(String s) {
    
            Timestamp sql = Timestamp.valueOf(s);
    
            return sql;
        }
    
        @Override
        public JavaType getInputType(TypeFactory typeFactory) {
            return null;
        }
    
        @Override
        public JavaType getOutputType(TypeFactory typeFactory) {
            return null;
        }
    
    
    }

标注@Component让springboot注入，然后实现Converter<String,Timestamp>这个接口，就能自动让转换类自动被配置（注册机）,注册机里有许多默认的实现的转换器。Coverter<T,C>T是前端的类型，C是你需要转换的类型。

IDEA下的模拟http请求成功  
POST [http://localhost:8080/my/insert?votename=lzn&user\_id=1&all\_person=5&endtime=2019-1-12+08%3A00%3A00&begintime=2019-1-12+17%3A36%3A00][http_localhost_8080_my_insert_votename_lzn_user_id_1_all_person_5_endtime_2019-1-12_08_3A00_3A00_begintime_2019-1-12_17_3A36_3A00]

HTTP/1.1 200  
Content-Type: application/json;charset=UTF-8  
Transfer-Encoding: chunked  
Date: Sun, 13 Jan 2019 01:50:58 GMT

200  
成功请求

[http_localhost_8080_my_insert_votename_lzn_user_id_1_all_person_5_endtime_2019-1-12_08_3A00_3A00_begintime_2019-1-12_17_3A36_3A00]: http://localhost:8080/my/insert?votename=lzn&user_id=1&all_person=5&endtime=2019-1-12+08%3A00%3A00&begintime=2019-1-12+17%3A36%3A00