JSON Tool class

package com.liu.utils;

import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.SerializationFeature;

import java.text.SimpleDateFormat;

public class JsonUtils {
    

    // Pass a parameter 
    public static String getJson(Object object){
    
        return getJson(object,"yyyy-MM-dd HH:mm:ss");
    }

    // Pass two parameters 
    public static String getJson(Object object,String dateFormat){
    

        ObjectMapper mapper = new ObjectMapper();
        // How to turn off timestamp 
        mapper.configure(SerializationFeature.WRITE_DATE_KEYS_AS_TIMESTAMPS,false);

        SimpleDateFormat sdf = new SimpleDateFormat(dateFormat);
        mapper.setDateFormat(sdf);

        try {
    
            return mapper.writeValueAsString(object);
        } catch (JsonProcessingException e) {
    
            e.printStackTrace();
        }
        return null;
    }
}

test

@RestController// Don't go to view parser 
public class UserController {
    

@RequestMapping("/j1")
public String json1(){
    
    // Create an object 
    User user = new User(" Liu Xiang ",3," male ");
    return JsonUtils.getJson(user); 
}    

result

Good configuration tomcat, Input url test

url：(http://localhost:8080/springmvc_05_json_war_exploded/j1)

result ：