网上杂七杂八的说法不一，大多数都是抄来抄去，没有实践，近期在项目频繁遇到boot+jackson处理日期的问题，故开此贴。 首先是POM <?xml version="1.0" encoding="U

网上杂七杂八的说法不一，大多数都是抄来抄去，没有实践，近期在项目频繁遇到boot+jackson处理日期的问题，故开此贴。

首先是POM

<?xml version="1.0" encoding="UTF-8"?><project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">    <modelVersion>4.0.0</modelVersion>    <groupId>io.cj.learning</groupId>    <artifactId>boot2exam</artifactId>    <version>0.0.1-SNAPSHOT</version>    <packaging>jar</packaging>    <name>boot2exam</name>    <description>Demo project for Spring Boot</description>    <parent>        <groupId>org.springframework.boot</groupId>        <artifactId>spring-boot-starter-parent</artifactId>        <version>2.0.0.RELEASE</version>        <relativePath/> <!-- lookup parent from repository -->    </parent>    <properties>        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>        <java.version>1.8</java.version>    </properties>    <dependencies>        <dependency>            <groupId>org.springframework.boot</groupId>            <artifactId>spring-boot-starter-data-redis</artifactId>        </dependency>        <dependency>            <groupId>org.springframework.boot</groupId>            <artifactId>spring-boot-starter-web</artifactId>        </dependency>        <dependency>            <groupId>org.springframework.boot</groupId>            <artifactId>spring-boot-starter-test</artifactId>            <scope>test</scope>        </dependency>        <dependency>            <groupId>org.springframework.boot</groupId>            <artifactId>spring-boot-starter-web</artifactId>            <version>RELEASE</version>            <scope>compile</scope>        </dependency>        <dependency>            <groupId>org.springframework.boot</groupId>            <artifactId>spring-boot-starter-web</artifactId>            <version>RELEASE</version>            <scope>compile</scope>        </dependency>    </dependencies>    <build>        <plugins>            <plugin>                <groupId>org.springframework.boot</groupId>                <artifactId>spring-boot-maven-plugin</artifactId>            </plugin>        </plugins>    </build></project>

 

然后是yml文件

（当然yml这东西很多人不喜欢，我也写了个properties版本的）

spring:    jackson:       #参数意义：       #JsonInclude.Include.ALWAYS              默认       #JsonInclude.Include.NON_DEFAULT     属性为默认值不序列化       #JsonInclude.Include.NON_EMPTY         属性为 空（””） 或者为 NULL 都不序列化       #JsonInclude.Include.NON_NULL           属性为NULL   不序列化        default-property-inclusion: ALWAYS        time-zone: GMT+8        date-format: yyyy-MM-dd HH:mm:ss

上面配置对应的properties文件版本：

#jackson相关配置spring.jackson.date-format = yyyy-MM-dd HH:mm:ss#时区必须要设置spring.jackson.time-zone= GMT+8#ALWAYS的意思是即时属性为null，仍然也会输出这个keyspring.jackson.default-property-inclusion=ALWAYS

 

然后来定义一个Controller和JAVA Bean

Controller：

package io.cj.learning.boot2exam.controller;import io.cj.learning.boot2exam.model.DateFormatTest;import org.springframework.web.bind.annotation.*;import java.text.SimpleDateFormat;import java.util.Date;@RestController@RequestMapping(value="/test")public class TestController {    /**     * 测试时间序列化, java.util.date 类型 -> String     * @return     */    @RequestMapping(value="/dateFormatTest", method = RequestMethod.GET)    @ResponseBody     public DateFormatTest dateFormatTest(){        DateFormatTest dateFormatTest = new DateFormatTest();        dateFormatTest.setIntProperties(100);        dateFormatTest.setDateProperties(new Date());        return dateFormatTest;    }    /**     * 测试时间反序列化 String ->  java.util.date 类型     */    @RequestMapping(value="/dateFormatTest2" ,method = RequestMethod.POST)    public void dateFormatTest2(@RequestBody DateFormatTest model){        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");        System.out.println(model.getIntProperties());        System.out.println(sdf.format(model.getDateProperties()));        System.out.println(model.getStrProperties());    }}

 

Java Bean：

package io.cj.learning.boot2exam.model;import java.util.Date;/** * 一个model，里面带一个日期类型 */public class DateFormatTest {    private Integer intProperties;    private Date dateProperties;    private String strProperties;    public Integer getIntProperties() {        return intProperties;    }    public void setIntProperties(Integer intProperties) {        this.intProperties = intProperties;    }    public Date getDateProperties() {        return dateProperties;    }    public void setDateProperties(Date dateProperties) {        this.dateProperties = dateProperties;    }    public String getStrProperties() {        return strProperties;    }    public void setStrProperties(String strProperties) {        this.strProperties = strProperties;    }}

 

启动主类：

package io.cj.learning.boot2exam;import org.springframework.boot.SpringApplication;import org.springframework.boot.autoconfigure.SpringBootApplication;@SpringBootApplicationpublic class Boot2examApplication {    public static void main(String[] args) {        SpringApplication.run(Boot2examApplication.class, args);    }}

 

测试：

试一下，首先是日期序列化， 请求一下试试 

然后是反序列化，也请求一个试试：