Java后臺生成圖片的完整步驟

更新時間：2021年08月03日 15:50:15 作者：奔跑saber

在一些詳情頁面中,可能需要對上傳到服務器中的圖片生成以縮略圖的形式展示,這篇文章主要給大家介紹了關于Java后臺生成圖片的相關資料,需要的朋友可以參考下

前言

由于從事的是支付行業(yè)，最近對接的一些第三方支付有時候需要我們這邊提供用戶的資料和交易信息，并且以圖片的形式發(fā)送給他們，由于這是后臺程序自動處理，然后直接發(fā)送給第三方支付公司，因此需要后臺查出用戶的相關信息，然后生成圖片，調用第三方提供的接口，將圖片鏈接以附件的形式發(fā)給他們，當用戶發(fā)起dispute操作的時候，觸發(fā)我方后臺的自動處理機制。

Java后臺生成圖片

1. 依賴的jar包(maven依賴)

<dependency>
   <groupId>com.github.xuwei-k</groupId>
   <artifactId>html2image</artifactId>
   <version>0.1.0</version>
</dependency>

2. 代碼

package com.generatePic;

import gui.ava.html.image.generator.HtmlImageGenerator;

public class TestGeneratePic {

    public static void main(String[] args) {
        generatePic();
    }

    public static void generatePic() {
        HtmlImageGenerator htmlImageGenerator = new HtmlImageGenerator();

        //format 表示html里的元素，比如表格
        String format = "<table>\n" +
                "  <tbody>\n" +
                "  <tr>\n" +
                "\t<img src="https://static.msport.com/public/up/pocket/operator/msportlogo.png" />\n" +
                "  </tr>\n" +
                "  </tbody>\n" +
                "</table>\n" +
                "\n" +
                "\n" +
                "<table border =1>\n" +
                "  <tbody>\n" +
                "    <tr>\n" +
                "      <td>User Account(user account number)</td>\n" +
                "      <td>%s</td>\n" +
                "    </tr>\n" +
                "   <tr>\n" +
                "      <td>user's email</td>\n" +
                "      <td>%s</td>\n" +
                "    </tr>\n" +
                "\t   <tr>\n" +
                "      <td>user's name</td>\n" +
                "      <td>%s</td>\n" +
                "    </tr>\n" +
                "  </tbody>\n" +
                "</table>\n" +
                "</br>\n" +
                "\n" +
                "<table>\n" +
                "  <tbody>\n" +
                "  <tr>\n" +
                "  <font size = "4">\n" +
                "  <b>PAYMENT INFOMATION</b> \n" +
                "  </font>\n" +
                "  </tr>\n" +
                "  </tbody>\n" +
                "</table>\n" +
                "\n" +
                "<table border =1>\n" +
                " <tbody>\n" +
                "  <tr>\n" +
                "      <td>Transaction Reference</td>\n" +
                "      <td>%s</td>\n" +
                "  </tr>\n" +
                "  <tr>\n" +
                "      <td>Transaction Amount</td>\n" +
                "      <td>%s</td>\n" +
                "    </tr>\n" +
                "\t<tr>\n" +
                "      <td>Currency</td>\n" +
                "      <td>%s</td>\n" +
                "    </tr>\n" +
                "\t<tr>\n" +
                "      <td>Transaction Status</td>\n" +
                "      <td>%s</td>\n" +
                "    </tr>\n" +
                "\t<tr>\n" +
                "      <td>Transaction Date</td>\n" +
                "      <td>%s</td>\n" +
                "    </tr>\n" +
                "\t<tr>\n" +
                "      <td>Payment Type</td>\n" +
                "      <td>%s</td>\n" +
                "    </tr>\n" +
                "\t<tr>\n" +
                "      <td>Card Number</td>\n" +
                "      <td>%s</td>\n" +
                "    </tr>\n" +
                "\t<tr>\n" +
                "      <td>Service Details</td>\n" +
                "      <td>%s</td>\n" +
                "    </tr>\n" +
                "  </tbody> \n" +
                "</table>\n" +
                "<br/>\n" +
                "\n" +
                "<table>\n" +
                "  <tbody>\n" +
                "  <tr>\n" +
                "  <font size = "4">\n" +
                "  <b>SERVICE HISTORY</b> \n" +
                "  </font>\n" +
                "  </tr>\n" +
                "  </tbody>\n" +
                "</table>\n" +
                "\n" +
                "<table border =1>\n" +
                "<thead>\n" +
                "    <tr>\n" +
                "      <th>DATE</th>\n" +
                "      <th>DESCRIPTION</th>\n" +
                "      <th>AMOUNT</th>\n" +
                "      <th>BALANCE</th>\n" +
                "    </tr>\n" +
                "  </thead>\n" +
                "  \n" +
                "  <tbody>\n" +
                "    <tr>\n" +
                "      <td>%s</td>\n" +
                "      <td>%s</td>\n" +
                "      <td>%s</td>\n" +
                "      <td>%s</td>\n" +
                "    </tr>\n" +
                "   <tr>\n" +
                "      <td>%s</td>\n" +
                "      <td>%s</td>\n" +
                "      <td>%s</td>\n" +
                "      <td>%s</td>\n" +
                "    </tr>\n" +
                "  </tbody>\n" +
                "</table>\n" +
                "\n" +
                "\n";
        String finalHtml = "<html></body>" + format + "</body></html>";
        htmlImageGenerator.loadHtml(finalHtml);

        //圖片名
        String fileName = "1" + ".png";
        
        htmlImageGenerator.saveAsImage(fileName);

    }
}

3. 生成的圖片