Java後臺生成圖片的完整步驟

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前言

由於從事的是支付行業，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，並且以圖片的形式發送給他們，由於這是後臺程序自動處理，然後直接發送給第三方支付公司，因此需要後臺查出用戶的相關信息，然後生成圖片，調用第三方提供的接口，將圖片鏈接以附件的形式發給他們，當用戶發起dispute操作的時候，觸發我方後臺的自動處理機制。

Java後臺生成圖片

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裡的元素，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

生成的圖片路徑默認在項目路徑下：

4. 實際應用的建議

可以通過   String.format() 函數， 拼接實際的數據，比如3中的%s就可以替換為實際的數據,最後生成自己想要的數據，如果你的前端技術足夠好，那麼你可以在後臺畫出更優美的圖片。

總結

到此這篇關於Java後臺生成圖片的文章就介紹到這瞭,更多相關Java後臺生成圖片內容請搜索WalkonNet以前的文章或繼續瀏覽下面的相關文章希望大傢以後多多支持WalkonNet！

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