Spring Boot中的JSON技术-时间处理

Spring Boot中的JSON技术-时间处理

1、准备

1.1、数据库

1.2、Model

package com.wnx.mall.tiny.mbg.model;

import com.fasterxml.jackson.annotation.JsonFormat;
import io.swagger.annotations.ApiModelProperty;
import java.io.Serializable;
import java.util.Date;

public class UmsAdmin implements Serializable {
    private Long id;

    private String username;

    private String password;

    @ApiModelProperty(value = "头像")
    private String icon;

    @ApiModelProperty(value = "邮箱")
    private String email;

    @ApiModelProperty(value = "昵称")
    private String nickName;

    @ApiModelProperty(value = "备注信息")
    private String note;
    
    @ApiModelProperty(value = "创建时间")
    private Date createTime;
    
    @ApiModelProperty(value = "最后登录时间")
    private Date loginTime;

    @ApiModelProperty(value = "帐号启用状态：0->禁用；1->启用")
    private Integer status;

    private static final long serialVersionUID = 1L;

    public Long getId() {
        return id;
    }

    public void setId(Long id) {
        this.id = id;
    }

    public String getUsername() {
        return username;
    }

    public void setUsername(String username) {
        this.username = username;
    }

    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password;
    }

    public String getIcon() {
        return icon;
    }

    public void setIcon(String icon) {
        this.icon = icon;
    }

    public String getEmail() {
        return email;
    }

    public void setEmail(String email) {
        this.email = email;
    }

    public String getNickName() {
        return nickName;
    }

    public void setNickName(String nickName) {
        this.nickName = nickName;
    }

    public String getNote() {
        return note;
    }

    public void setNote(String note) {
        this.note = note;
    }

    public Date getCreateTime() {
        return createTime;
    }

    public void setCreateTime(Date createTime) {
        this.createTime = createTime;
    }

    public Date getLoginTime() {
        return loginTime;
    }

    public void setLoginTime(Date loginTime) {
        this.loginTime = loginTime;
    }

    public Integer getStatus() {
        return status;
    }

    public void setStatus(Integer status) {
        this.status = status;
    }

    @Override
    public String toString() {
        StringBuilder sb = new StringBuilder();
        sb.append(getClass().getSimpleName());
        sb.append(" [");
        sb.append("Hash = ").append(hashCode());
        sb.append(", id=").append(id);
        sb.append(", username=").append(username);
        sb.append(", password=").append(password);
        sb.append(", icon=").append(icon);
        sb.append(", email=").append(email);
        sb.append(", nickName=").append(nickName);
        sb.append(", note=").append(note);
        sb.append(", createTime=").append(createTime);
        sb.append(", loginTime=").append(loginTime);
        sb.append(", status=").append(status);
        sb.append(", serialVersionUID=").append(serialVersionUID);
        sb.append("]");
        return sb.toString();
    }
}

1.3、Controller

package com.wnx.mall.tiny.controller;

import com.wnx.mall.tiny.mbg.model.UmsAdmin;
import com.wnx.mall.tiny.service.UmsAdminService;
import io.swagger.annotations.Api;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

import javax.annotation.Resource;

@Api(tags = "JsonController", description = "SpringBootJSON测试")
@Controller
@RequestMapping("/json")
public class JsonController {
    @Resource
    private UmsAdminService adminService;

    @GetMapping("findById/{id}")
    @ResponseBody
    public UmsAdmin findById(@PathVariable(name = "id")Long id) {
       UmsAdmin umsAdmin = adminService.findById(id);
        System.out.println(umsAdmin);
        return umsAdmin;
    }
}

观察日期返回得到JSON格式！

{
  "id": 1,
  "username": "test",
  "password": "$2a$10$NZ5o7r2E.ayT2ZoxgjlI.eJ6OEYqjH7INR/F.mXDbjZJi9HF0YCVG",
  "icon": "http://macro-oss.oss-cn-shenzhen.aliyuncs.com/mall/images/20180607/timg.jpg",
  "email": "[email protected]",
  "nickName": "测试账号",
  "note": null,
  "createTime": "2018-09-29T05:55:30.000+0000",
  "loginTime": "2018-09-29T05:55:39.000+0000",
  "status": 1
}

可看到时间默认以2018-09-29T05:55:30.000+0000的形式输出，如果想要改变这个默认行为，我们有三种如下解决手段！

2、解决

2.1、方法1：配置加强的ObjectMapper

package com.wnx.mall.tiny.config;

import com.fasterxml.jackson.databind.ObjectMapper;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import java.text.SimpleDateFormat;

@Configuration
public class JacksonConfig {
    @Bean
    public ObjectMapper getObjectMapper(){
        ObjectMapper mapper = new ObjectMapper();
        mapper.setDateFormat(new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"));
        return mapper;
    }
}

2.2、方法2:Model加注解@JsonFormat

package com.wnx.mall.tiny.mbg.model;

import com.fasterxml.jackson.annotation.JsonFormat;
import io.swagger.annotations.ApiModelProperty;
import java.io.Serializable;
import java.util.Date;

public class UmsAdmin implements Serializable {
    private Long id;

    private String username;

    private String password;

    @ApiModelProperty(value = "头像")
    private String icon;

    @ApiModelProperty(value = "邮箱")
    private String email;

    @ApiModelProperty(value = "昵称")
    private String nickName;

    @ApiModelProperty(value = "备注信息")
    private String note;
    @JsonFormat(pattern = "yyyy-MM-dd HH:mm:ss")
    @ApiModelProperty(value = "创建时间")
    private Date createTime;
    @JsonFormat(pattern = "yyyy-MM-dd HH:mm:ss")
    @ApiModelProperty(value = "最后登录时间")
    private Date loginTime;

    @ApiModelProperty(value = "帐号启用状态：0->禁用；1->启用")
    private Integer status;

    private static final long serialVersionUID = 1L;

    public Long getId() {
        return id;
    }

    public void setId(Long id) {
        this.id = id;
    }

    public String getUsername() {
        return username;
    }

    public void setUsername(String username) {
        this.username = username;
    }

    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password;
    }

    public String getIcon() {
        return icon;
    }

    public void setIcon(String icon) {
        this.icon = icon;
    }

    public String getEmail() {
        return email;
    }

    public void setEmail(String email) {
        this.email = email;
    }

    public String getNickName() {
        return nickName;
    }

    public void setNickName(String nickName) {
        this.nickName = nickName;
    }

    public String getNote() {
        return note;
    }

    public void setNote(String note) {
        this.note = note;
    }

    public Date getCreateTime() {
        return createTime;
    }

    public void setCreateTime(Date createTime) {
        this.createTime = createTime;
    }

    public Date getLoginTime() {
        return loginTime;
    }

    public void setLoginTime(Date loginTime) {
        this.loginTime = loginTime;
    }

    public Integer getStatus() {
        return status;
    }

    public void setStatus(Integer status) {
        this.status = status;
    }

    @Override
    public String toString() {
        StringBuilder sb = new StringBuilder();
        sb.append(getClass().getSimpleName());
        sb.append(" [");
        sb.append("Hash = ").append(hashCode());
        sb.append(", id=").append(id);
        sb.append(", username=").append(username);
        sb.append(", password=").append(password);
        sb.append(", icon=").append(icon);
        sb.append(", email=").append(email);
        sb.append(", nickName=").append(nickName);
        sb.append(", note=").append(note);
        sb.append(", createTime=").append(createTime);
        sb.append(", loginTime=").append(loginTime);
        sb.append(", status=").append(status);
        sb.append(", serialVersionUID=").append(serialVersionUID);
        sb.append("]");
        return sb.toString();
    }
}

2.3、方法3:application.yaml中配置spring.jackson.date-format全局

server:
  port: 8080

spring:
  datasource:
    url: jdbc:mysql://localhost:3306/mall?useUnicode=true&characterEncoding=utf-8&serverTimezone=Asia/Shanghai
    username: root
    password: root
  jackson:
    date-format: yyyy-MM-dd HH:mm:ss

mybatis:
  mapper-locations:
    - classpath:mapper/*.xml
    - classpath*:com/**/mapper/*.xml

3、说明

三种手段则一个，都能得到如下效果！