Java 動態生成jpg圖片
阿新 • • 發佈：2019-01-10
1、生成一個頁面資料:
import java.awt.Color; import java.awt.Font; import java.awt.Graphics; import java.awt.image.BufferedImage; import java.io.BufferedOutputStream; import java.io.FileOutputStream; import java.util.ArrayList; import java.util.HashMap; import java.util.List; import java.util.Map; import com.haier.bean.PolicyBean; import com.haier.dto.PolicyPersonDto; import com.haier.dto.PolicyProductDto; import com.sun.image.codec.jpeg.JPEGCodec; import com.sun.image.codec.jpeg.JPEGImageEncoder; public class PictureUtil { private static void createImage(String fileLocation, BufferedImage image) { try { FileOutputStream fos = new FileOutputStream(fileLocation); BufferedOutputStream bos = new BufferedOutputStream(fos); JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(bos); encoder.encode(image); bos.close(); fos.close(); } catch (Exception e) { e.printStackTrace(); } } public static void graphicsGeneration(String path, PolicyBean policyBean) { int imageWidth = 1000;// 圖片的寬度 int imageHeight = 1000;// 圖片的高度 BufferedImage image = new BufferedImage(imageWidth, imageHeight, BufferedImage.TYPE_INT_RGB); Graphics graphics = image.getGraphics(); graphics.setColor(Color.white); graphics.fillRect(0, 0, imageWidth, imageHeight); graphics.setColor(Color.ORANGE); graphics.setFont(new Font("宋體", Font.BOLD, 20)); PolicyPersonDto policyPersonDto = policyBean.getPolicyPersonDto(); PolicyProductDto policyProductDto = policyBean.getPolicyProductDto(); int num = 50; graphics.drawString("手機號 : " + policyPersonDto.getMobile(), 50, num); num += 50; graphics.drawString("登陸密碼 : " + policyPersonDto.getPassword(), 50, num); num += 50; graphics.drawString("身份證號 : " + policyPersonDto.getIdentityCard(), 50, num); num += 50; graphics.drawString("姓名 : " + policyPersonDto.getUserName(), 50, num); num += 50; graphics.drawString("所在地區 : " + policyPersonDto.getArea(), 50, num); num += 50; graphics.drawString("常住地址 : " + policyPersonDto.getAddress(), 50, num); num += 50; graphics.drawString("微訊號 : " + policyPersonDto.getWechatNo(), 50, num); num += 50; graphics.drawString("QQ號 : " + policyPersonDto.getQq(), 50, num); num += 50; graphics.drawString("Email : " + policyPersonDto.getEmail(), 50, num); num += 50; graphics.drawString("品牌 : " + policyProductDto.getBrand(), 50, num); num += 50; graphics.drawString("型號 : " + policyProductDto.getModel(), 50, num); num += 50; graphics.drawString("商品編號 : " + policyProductDto.getProductId(), 50, num); num += 50; graphics.drawString("購買日期 : " + policyProductDto.getPurchaseDate(), 50, num); num += 50; graphics.drawString("購買價格 : " + policyProductDto.getPurchasePrice(), 50, num); num += 50; graphics.drawString("購買途徑 : " + policyProductDto.getPurchaseWay(), 50, num); num += 50; graphics.drawString("報修電話 : " + policyProductDto.getWarrantyPhone(), 50, num); num += 50; graphics.drawString("延保單位 : " + policyProductDto.getExtendedWarrantyUnit(), 50, num); num += 50; graphics.drawString("延保電話 : " + policyProductDto.getExtendedWarrantyPhone(), 50, num); num += 50; graphics.drawString("發票編號 : " + policyProductDto.getInvoiceNo(), 50, num); createImage(path, image); } public static void main(String[] args){ List<Map> list = new ArrayList<Map>(); Map<String, String> mapTitle1 = new HashMap<String, String>(); mapTitle1.put("title", "使用人資訊"); list.add(mapTitle1); Map<String, String> map1 = new HashMap<String, String>(); map1.put("客戶姓名", "張三"); map1.put("手機號", "123123"); map1.put("身份證號", "230302198811241234"); list.add(map1); Map<String, String> map2 = new HashMap<String, String>(); map2.put("送貨地址", "北京市海淀區知春路113號銀網中心B座1009室"); list.add(map2); Map<String, String> map3 = new HashMap<String, String>(); map3.put("微訊號碼", "123123"); map3.put("qq號碼", "123123"); map3.put("電子郵箱", "[email protected]"); list.add(map3); Map<String, String> mapTitle2 = new HashMap<String, String>(); mapTitle2.put("title", "購買人資訊"); list.add(mapTitle2); Map<String, String> map4 = new HashMap<String, String>(); map4.put("姓名", "張三朋友"); map4.put("手機號", "15612341122"); map4.put("身份證號", "230302198811241234"); list.add(map4); Map<String, String> mapTitle3 = new HashMap<String, String>(); mapTitle3.put("title", "產品資訊"); list.add(mapTitle3); Map<String, String> map5 = new HashMap<String, String>(); map5.put("產品型號", "ALI88"); map5.put("憑證型別", "發票"); map5.put("購買日期", "2014-12-02"); list.add(map5); Map<String, String> map6 = new HashMap<String, String>(); map6.put("購買商城", "ALI88"); map6.put("憑證編號", "發票"); list.add(map6); int imageWidth = 1200;// 圖片的寬度 int imageHeight = 1000;// 圖片的高度 BufferedImage image = new BufferedImage(imageWidth, imageHeight, BufferedImage.TYPE_INT_RGB); Graphics graphics = image.getGraphics(); graphics.setColor(Color.white); graphics.fillRect(0, 0, imageWidth, imageHeight); graphics.setColor(Color.black); int high = 100; int wigth = 0; graphics.setFont(new Font("宋體", Font.BOLD, 50)); graphics.drawString("註冊保單", 500, high); graphics.setFont(new Font("宋體", Font.BOLD, 20)); high += 10; graphics.drawLine(50, high, 1150, high); for(Map<String, String> rowMap : list){ high += 50; wigth = 50; for(Map.Entry<String, String> entry : rowMap.entrySet()){ String name = entry.getKey() + "：" + entry.getValue(); if("title".equals(entry.getKey())){ high += 50; graphics.setFont(new Font("黑體", Font.BOLD, 30)); graphics.drawString(entry.getValue(), wigth, high); graphics.setFont(new Font("宋體", Font.BOLD, 20)); } else { graphics.drawString(name, wigth, high); wigth += 400; } } } createImage("D://test1.jpg", image); } }
2、生成一個表格：
public void graphicsGeneration() throws Exception { // 實際資料行數+標題+備註 int totalrow = 6; int totalcol = 5; int imageWidth = 1024; int imageHeight = totalrow * 40 + 20; int rowheight = 40; int startHeight = 10; int startWidth = 10; int colwidth = ((imageWidth - 20) / totalcol); BufferedImage image = new BufferedImage(imageWidth, imageHeight, BufferedImage.TYPE_INT_RGB); Graphics graphics = image.getGraphics(); graphics.setColor(Color.WHITE); graphics.fillRect(0, 0, imageWidth, imageHeight); graphics.setColor(new Color(220, 240, 240)); // 畫橫線 for (int j = 0; j < totalrow - 1; j++) { graphics.setColor(Color.black); graphics.drawLine(startWidth, startHeight + (j + 1) * rowheight, imageWidth - 5, startHeight + (j + 1) * rowheight); } // 末行 graphics.setColor(Color.black); graphics.drawLine(startWidth, imageHeight - 90, imageWidth - 5, imageHeight - 90); // 畫豎線 for (int k = 0; k < totalcol; k++) { graphics.setColor(Color.black); graphics.drawLine(startWidth + k * colwidth, startHeight + rowheight, startWidth + k * colwidth, imageHeight - 50); } // 末列 graphics.setColor(Color.black); graphics.drawLine(imageWidth - 5, startHeight + rowheight, imageWidth - 5, imageHeight - 50); // 設定字型 Font font = new Font("華文楷體", Font.BOLD, 20); graphics.setFont(font); // 寫標題 String title = "標題寫在這裡"; graphics.drawString(title, imageWidth / 3 + startWidth, startHeight + rowheight - 10); font = new Font("華文楷體", Font.BOLD, 18); graphics.setFont(font); // 寫入表頭 String[] headCells = { "編號", "名稱", "年齡", "性別", "體重" }; for (int m = 0; m < headCells.length; m++) { graphics.drawString(headCells[m].toString(), startWidth + colwidth * m + 5, startHeight + rowheight * 2 - 10); } // 設定字型 font = new Font("華文楷體", Font.PLAIN, 16); graphics.setFont(font); String[][] cellsValue = { { "101", "xiaozhang", "13", "M", "55" }, { "102", "xiaowang", "14", "F", "53" }, { "103", "同事接聽，工作資訊核實無誤，收入純打卡，無現金髮薪同事接聽，工作資訊核實無誤，收入純打卡，無現金髮薪同事接聽，工作資訊核實無誤，收入純打卡，無現金髮薪同事接聽，工作資訊核實無誤，收入純打卡，無現金髮薪", "15", "M", "58" } }; // 寫入內容 for (int n = 0; n < cellsValue.length; n++) { String[] arr = cellsValue[n]; for (int l = 0; l < arr.length; l++) { graphics.drawString(cellsValue[n][l].toString(), startWidth + colwidth * l + 5, startHeight + rowheight * (n + 3) - 10); } } font = new Font("華文楷體", Font.BOLD, 18); graphics.setFont(font); graphics.setColor(Color.RED); // 寫備註 String remark = "備註：備註寫在這裡。"; graphics.drawString(remark, startWidth, imageHeight - 30); //createImage("D:\\1.jpg"); ImageIO.write(image, "jpg", new File("D:\\1.jpg")); }
3、實現條碼列印原始碼，Graphics2D 在圖片上畫表格，圖片等
/**
* 列印模版
*
* @param imgWidth 圖片的寬度
* @param imgHeight 圖片的高度
* @param x 起始x軸
* @param y 起始y軸
* @param rowHeight 每行的高度
* @param dataStart 資料縮排
* @param firstWidth 第一列間距x座標
* @param secondWidth 第二列間距x座標
* @param thirdWidth 第三列間距x座標
* @param fourWidth 第四列間距x座標
* @param tb 實體物件
* @return BufferedImage
*(引數自己定，我的是340, 200, 0, 0, 20, 10, 60, 190, 250, 340, tb)
*/
private BufferedImage createTbGraphics(int imgWidth, int imgHeight, int x, int y, int rowHeight,
int dataStart, int firstWidth, int secondWidth, int thirdWidth, int fourWidth,
Tb tb) {
//空白麵板 也可是張圖片
BufferedImage image = new BufferedImage(imgWidth, imgHeight, BufferedImage.TYPE_INT_RGB);
Graphics2D g = null;
try {
g = image.createGraphics();// 得到圖形上下文
g.setBackground(Color.WHITE);//設定背景色
g.fillRect(x, y, imgWidth, imgHeight);//填充整個螢幕
g.setColor(Color.BLACK);//設定畫筆顏色
// g.setFont(new Font("Arial", Font.LAYOUT_LEFT_TO_RIGHT, 12));// 設定字型 這種以及“非國產”是亂碼 有辦法解決的話也可為實線， 我認為亂碼是因為條碼印表機的緣故，這樣就要二次開發印表機，所以我沒要這種方法
g.setFont(new Font("微軟雅黑", Font.TYPE1_FONT, 12));// 設定字型 還可設定為Font.ITALIC 就這兩種條碼印表機打印出來的的線是實體線
// g.setFont(new Font("simsun", Font.TYPE1_FONT, 12));// jvm裡 想將字型格式simsun存入jvm裡直接呼叫，打印出來也不成
g.drawLine(x, y, imgWidth, y);// 第一條橫線
g.drawLine(x, y, x, rowHeight);//豎線
// g.drawString(new String("名稱".getBytes("utf-8"),"utf-8"), dataStart, rowHeight - 5);
g.drawString("名稱", dataStart, rowHeight - 5);
g.drawLine(firstWidth, y, firstWidth, rowHeight);
g.drawString(tb.getName() == null ? "" : tb.getName() , firstWidth + dataStart, rowHeight - 5);
g.drawLine(imgWidth - 1, y, imgWidth - 1, rowHeight);
g.drawLine(x, rowHeight, imgWidth, rowHeight); //橫線
g.drawLine(x, rowHeight, x, rowHeight * 2);
g.drawString("程式碼", dataStart, rowHeight * 2 - 5); // * 2代表第二行
g.drawLine(firstWidth, rowHeight, firstWidth, rowHeight * 2);
g.drawString(tb.getCode() == null ? "" : tb.getCode() , firstWidth + dataStart, rowHeight * 2 - 5);
g.drawLine(secondWidth, rowHeight, secondWidth, rowHeight * 2);
//其他資料....
//最後一條線
g.drawLine(x, imgHeight - 1, imgWidth, imgHeight - 1);
//在指定座標(198,61)處 寫入二維碼或其它圖片
g.drawImage(ImageIO.read(getServletContext().getResourceAsStream(t.getPicUrl())), null, 198, 61);
g.dispose();
} catch (IOException e) {
e.printStackTrace();
}
return image;
}