背景：最近项目里有个需求，需要动态配置一个模板，来打印各种不同银行或者其他行业的小票，下面小小记录一下实现过程。
关键词：Springboot, thymeleaf, Freemarker,html2image
一，引入依赖
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>
<dependency>
<groupId>org.xhtmlrenderer</groupId>
<artifactId>core-renderer</artifactId>
<version>R8</version>
</dependency>
<dependency>
<groupId>com.github.xuwei-k</groupId>
<artifactId>html2image</artifactId>
<version>0.1.0</version>
</dependency>
<!-- freemarker模板引擎-->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-freemarker</artifactId>
</dependency>
二，准备数据
1，动态配置的字段
2，组装成需要的数据结构
三，配置动态模板
这里是关键，需要遍历数据，并判断数据中属性
<!DOCTYPE html>
<html lang="en" xmlns="http://www.w3.org/1999/html">
<head>
<meta charset="utf-8"/>
<style>
table {
font-family: "Times New Roman", serif;
}
</style>
<title>FreeMarker</title>
</head>
<body>
<table border="0" width="300">
<#if data??>
<#list data as item>
<#if item.showTitle>
<#if item.newLine>
<tr>
<td colspan="3" style="text-align: left; font-size: ${item.titleFontSize};">${item.fieldName}:</td>
</tr>
<tr>
<td colspan="3" style="text-align: ${item.position}; font-weight: ${item.fontStyle}; font-size:${item.fontSize};">${item.fieldValue}</td>
</tr>
<#else>
<#if item.mergeToTitle>
<tr>
<td colspan="3" style="text-align: ${item.position}; font-weight: ${item.fontStyle};font-size: ${item.fontSize};">${item.fieldName}: ${item.fieldValue}</td>
</tr>
<#else>
<tr>
<td style="text-align: left; font-weight: ${item.fontStyle};font-size: ${item.titleFontSize};">${item.fieldName}:</td>
<td colspan="2" style="text-align: ${item.position}; font-weight: ${item.fontStyle}; font-size: ${item.fontSize};">${item.fieldValue}</td>
</tr>
</#if>
</#if>
<#else>
<#if item.fieldCode=='amountTitleLine'>
<tr>
<td style="text-align: left; font-size: 12px; width: 20%">TYPE</td>
<td style="text-align: center; font-size: 12px; width: 60%">SUM</td>
<td style="text-align: right; font-size: 12px; width: 20%">AMOUNT</td>
</tr>
<#elseif item.fieldCode=='creditCard'>
<tr>
<td colspan="3" style="text-align: left; font-size: ${item.fontSize}; width: 20%">${item.fieldName}</td>
</tr>
<tr>
<td style="text-align: left; font-size: ${item.fontSize}; width: 20%">SALE</td>
<td style="text-align: center; font-size: ${item.fontSize}; width: 60%">${creditCard.creditSaleCount}</td>
<td style="text-align: right; font-size: ${item.fontSize}; width: 20%">${creditCard.creditSaleAmount}</td>
</tr>
<tr>
<td style="text-align: left; font-size: ${item.fontSize}; width: 20%">VOID</td>
<td style="text-align: center; font-size: ${item.fontSize}; width: 60%">${creditCard.creditVoidCount}</td>
<td style="text-align: right; font-size: ${item.fontSize}; width: 20%">${creditCard.creditVoidAmount}</td>
</tr>
<#elseif item.fieldCode=='debitCard'>
<tr>
<td colspan="3" style="text-align: left; font-size: ${item.fontSize}; width: 20%">${item.fieldName}</td>
</tr>
<tr>
<td style="text-align: left; font-size: ${item.fontSize}; width: 20%">SALE</td>
<td style="text-align: center; font-size: ${item.fontSize}; width: 60%">${debitCard.debitSaleCount}</td>
<td style="text-align: right; font-size: ${item.fontSize}; width: 20%">${debitCard.debitSaleAmount}</td>
</tr>
<tr>
<td style="text-align: left; font-size: ${item.fontSize}; width: 20%">REFUND</td>
<td style="text-align: center; font-size: ${item.fontSize}; width: 60%">${debitCard.debitRefundCount}</td>
<td style="text-align: right; font-size: ${item.fontSize}; width: 20%">${debitCard.debitRefundAmount}</td>
</tr>
<tr>
<td style="text-align: left; font-size: ${item.fontSize}; width: 20%">CASHBACK</td>
<td style="text-align: center; font-size: ${item.fontSize}; width: 60%">${debitCard.debitCashbackCount}</td>
<td style="text-align: right; font-size: ${item.fontSize}; width: 20%">${debitCard.debitCashbackAmount}</td>
</tr>
<#elseif item.fieldCode=='allCards'>
<tr>
<td colspan="3" style="text-align: left; font-size: ${item.fontSize}; width: 20%">${item.fieldName}</td>
</tr>
<tr>
<td style="text-align: left; font-size: ${item.fontSize}; width: 20%">SALE</td>
<td style="text-align: center; font-size: ${item.fontSize}; width: 60%">${allCards.totalSaleCount}</td>
<td style="text-align: right; font-size: ${item.fontSize}; width: 20%">${allCards.totalSaleAmount}</td>
</tr>
<tr>
<td style="text-align: left; font-size: ${item.fontSize}; width: 20%">REFUND</td>
<td style="text-align: center; font-size: ${item.fontSize}; width: 60%">${allCards.totalRefundCount}</td>
<td style="text-align: right; font-size: ${item.fontSize}; width: 20%">${allCards.totalRefundAmount}</td>
</tr>
<#elseif item.fieldCode=='totalAmoutEnd'>
<tr>
<td style="text-align: left; font-size: ${item.fontSize}; width: 20%">${item.fieldName}</td>
<td style="text-align: center; font-size: ${item.fontSize}; width: 60%">${totalAmoutEnd.totalCount}</td>
<td style="text-align: right; font-size: ${item.fontSize}; width: 20%">${totalAmoutEnd.totalAmount}</td>
</tr>
<#else>
<#if item.fieldCode=='bankLogo'>
<tr>
<td colspan="3" style="text-align: ${item.position};">
<img src="${item.fieldValue}" width="250" height="100" alt="BankLogo"/>
</td>
</tr>
<#elseif item.fieldCode='emptyLine'>
<tr>
<td colspan="3" style="height:15px;">
</td>
</tr>
<#elseif item.fieldCode='grayLine'>
<tr>
<td colspan="3">
<hr style="border: none; border-bottom:1px solid black"/>
</td>
</tr>
<#else>
<tr>
<td colspan="3" style="text-align: ${item.position}; font-weight: ${item.fontStyle}; font-size: ${item.fontSize};">${item.fieldValue}</td>
</tr>
</#if>
</#if>
</#if>
</#list>
<#else>
</#if>
</table>
</body>
</html>四，结果展示
