將object轉成map

方式 一：Jackson

引入jackson-databind：

<dependency>
    <groupId>com.fasterxml.jackson.core</groupId>
    <artifactId>jackson-databind</artifactId>
    <version>2.11.3</version>
</dependency>

示例代碼：

// 交易日志
TransferLog transferLog = new TransferLog();
transferLog.setId("1");
transferLog.setTransferType(1);
transferLog.setTransferTime(new Date());
transferLog.setAmount(new BigDecimal("2310.00"));
// 將object轉成map
Map<String, Object> map = new ObjectMapper().convertValue(transferLog, Map.class);
// 轉出轉換結果
System.out.println("## 轉換結果 ##");
System.out.println(new Gson().toJson(map));

轉出結果：

## 轉換結果 ##
{"id":"1","amount":2310.00,"transferTime":1613616565389,"transferType":1}

方式二：Hutool

引入hutool：

<dependency>
    <groupId>cn.hutool</groupId>
    <artifactId>hutool-all</artifactId>
    <version>5.4.1</version>
</dependency>

示例代碼：

// 交易日志
TransferLog transferLog = new TransferLog();
transferLog.setId("1");
transferLog.setTransferType(1);
transferLog.setTransferTime(new Date());
transferLog.setAmount(new BigDecimal("2310.00"));
// 方式二：hutool
Map<String, Object> hutoolMap = BeanUtil.beanToMap(transferLog);
// 轉出轉換結果
System.out.println("## 轉換結果 ##");
System.out.println(new Gson().toJson(hutoolMap));

轉出結果：

## 轉換結果 ##
{"id":"1","amount":2310.00,"transferTime":"Feb 18, 2021 2:01:01 PM","transferType":1}