java后台html转jpg图片工具类及测试类
1.图片转文字工具类
package com.hecross.common.util;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.image.BufferedImage;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.InputStream;
import java.util.UUID;
import javax.imageio.ImageIO;
import javax.swing.JTextPane;
import javax.swing.border.EmptyBorder;
import javax.swing.plaf.basic.BasicEditorPaneUI;
public class HtmlToImageUtils {
public static int DEFAULT_IMAGE_WIDTH = 1200;
public static int DEFAULT_IMAGE_HEIGHT = 700;
public static boolean paintPage(Graphics g, int hPage, int pageIndex, JTextPane panel) {
Graphics2D g2 = (Graphics2D) g;
Dimension d = ((BasicEditorPaneUI) panel.getUI()).getPreferredSize(panel);
double panelHeight = d.height;
double pageHeight = hPage;
int totalNumPages = (int) Math.ceil(panelHeight / pageHeight);
g2.translate(0f, -(pageIndex - 1) * pageHeight);
panel.paint(g2);
boolean ret = true;
if (pageIndex >= totalNumPages) {
ret = false;
return ret;
}
return ret;
}
/**
* html转换为ｊｐｅｇ文件
*
* @param bgColor
* 图片的背景色
* @param html
* html的文本信息
* @param width
* 显示图片的Ｔｅｘｔ容器的宽度
* @param height
* 显示图片的Ｔｅｘｔ容器的高度
* @param eb
* 設置容器的边框
* @return
* @throws Exception
*/
@SuppressWarnings("restriction")
public static byte[] html2jpeg(Color bgColor, String html, int width,
int height, EmptyBorder eb) throws Exception {
String imageName = "E:\\"+ UUID.randomUUID().toString() + ".jpg";
JTextPane tp = new JTextPane();
tp.setSize(width, height);
if (eb == null) {
eb = new EmptyBorder(0, 50, 0, 50);
}
if (bgColor != null) {
tp.setBackground(bgColor);
}
if (width <= 0) {
width = DEFAULT_IMAGE_WIDTH;
}
if (height <= 0) {
height = DEFAULT_IMAGE_HEIGHT;
}
tp.setBorder(eb);
tp.setContentType("text/html");
tp.setText(html);
int pageIndex = 1;
boolean bcontinue = true;
String resUrl = "";
byte[] bytes = null;
while (bcontinue) {
BufferedImage image = new BufferedImage(width,
height, BufferedImage.TYPE_INT_RGB);
Graphics g = image.getGraphics();
g.setClip(0, 0, width, height);
bcontinue = paintPage(g, height, pageIndex, tp);
g.dispose();
ByteArrayOutputStream baos = new ByteArrayOutputStream();
ImageIO.write(image, "jpg", baos);
baos.flush();
bytes = baos.toByteArray();
baos.close();
FileUtils.writeByteArrayToFile(new File(imageName), bytes);
//写入阿里云
pageIndex++;
}
return bytes;
}
}2.测试
**String htmlstr =
""+"<body style=\"background:#f4f4f4;margin:0;padding:0;font-size:14px;color:#333;line-height: 1;box-sizing:border-box;\">" +
"<div style=\"box-sizing:border-box;width:980px;padding: 32px 40px;overflow: hidden;margin:0 auto;\">" +
"<div style=\"box-sizing:border-box;text-align: right;width:100%;height:16px;font-size: 16px;line-height: 16px;\">住院div>" +
"<div style=\"box-sizing:border-box;width:100%;height:60px;line-height: 1;overflow:hidden;text-align: center;\">" +
"<div style=\"box-sizing:border-box;display: inline-block;margin:0 auto;\">" +
"<div style=\"box-sizing:border-box;display:block;font-size: 24px;\">首都医科大学附属北京儿童医院div>" +
"<div style=\"box-sizing:border-box;display:block;font-size: 20px;margin-top:16px;\">影像检查诊断报告单div>" +
"div>" +
"div>" +
"<div style=\"box-sizing:border-box;width:100%;border:solid 2px #000;border-right:none;border-left:none; line-height:28px;height:62px;margin-top:10px;padding:2px 8px;\">" +
"<table border=\"0\" style=\"width:100%;border-spacing:0px ; \">" +
"<tr style=\"width:100%;height:16px;\" border=\"0\">" +
"<td style=\"width:25%;\">姓名：张三丰td>" +
"<td style=\"width:25%;\">性别：男td>" +
"<td style=\"width:25%;\">年龄：4岁td>" +
"<td style=\"width:25%;\">ID号： 0009090990td>" +
"tr>" +
"<tr style=\"width:100%;height:16px;\" border=\"0\">" +
"<td style=\"\">科室：内分泌td>" +
"<td style=\"width:25%;\">HIS号：987922td>" +
"<td style=\"width:25%;\">检查类别：MRtd>" +
"<td style=\"width:25%;\">检验号：201209090909td>" +
"tr>" +
"table>" +
"div>" +
"<div style=\"min-height:30px;clear:both;overflow:hidden;margin-top:8px;\">" +
"<table border=\"0\" style=\"width:100%;border-spacing:0px ; \">" +
"<tr style=\"width:100%;height:16px;\" border=\"0\">" +
"<td style=\"width:90px;font-size: 16px;line-height:24px;color:#000;font-weight:700;\">检查部位：td>" +
"<td style=\"width:810px;padding-left:8px;line-height:20px;padding-top:2px;\">小腿哦UI电话小腿小腿哦U话小腿哦UI电话td>" +
"tr>" +
"table>" +
"div>" +
"<div style=\"min-height:100px;clear:both;overflow:hidden;margin-top:20px;\">" +
"<table border=\"0\" style=\"width:100%;border-spacing:0px ; \">" +
"<tr style=\"width:100%;\" border=\"0\" valign=\"top\">" +
"<td style=\"width:90px;font-size: 16px;line-height:24px;color:#000;font-weight:700;\">影像表现：td>" +
"<td style=\"width:810px;padding-left:8px;line-height:20px;padding-top:2px;\">小腿哦UI电话小腿哦UI电话小腿哦UI电话小腿哦UIUI电话小腿哦UI电话小腿哦UI电话小腿哦UI电话小腿哦UI电话小腿哦UI电话小腿哦UI电话小腿哦UI电话小腿哦UI电话小腿哦UI电话小腿哦UIUI电话小腿哦UI电话小腿哦UI电话小腿哦UI电话小腿哦UI电话小腿哦UI电话小腿哦UI电话小腿哦UI电话小腿哦UI电话小腿哦UI电话小腿哦UI电话小腿哦UI电话小腿哦UI电话小腿哦UI电话小腿哦UI电话小腿哦UI电话小腿哦UI电话小腿哦UI电话小腿哦UI电话小腿哦UI电话小腿哦UI电话小腿哦UI电话小腿哦UI电话td>" +
"tr>" +
"table>" +
"div>" +
"<div style=\"min-height:100px;clear:both;overflow:hidden;margin-top:30px;\">" +
"<table border=\"0\" style=\"width:100%;border-spacing:0px ; \">" +
"<tr style=\"width:100%;\" border=\"0\" valign=\"top\">" +
"<td style=\"width:90px;font-size: 16px;line-height:24px;color:#000;font-weight:700;\">印象：td>" +
"<td style=\"width:810px;padding-left:8px;line-height:20px;padding-top:2px;\">小腿哦UI电话小腿哦UI电话小腿哦UI电话小腿哦UIUI电话小腿哦UI电话小腿哦UI电话小腿哦UI电话小腿哦UI电话小腿哦UI电话小腿哦UI电话小腿哦UI电话小腿哦UI电话小腿哦UI电话小腿哦UIUI电话小腿哦UI电话小腿哦UI电话小腿哦UI电话小腿哦UI电话小腿哦UI电话小腿哦UI电话小腿哦UI电话小腿哦UI电话小腿哦UI电话小腿哦UI电话小腿哦UI电话小腿哦UI电话小腿哦UI电话小腿哦UI电话小腿哦UI电话小腿哦UI电话小腿哦UI电话小腿哦UI电话小腿哦UI电话小腿哦UI电话小腿哦UI电话小腿哦UI电话td>" +
"tr>" +
"table>" +
"div>" +
"<div style=\"margin-top:20px;height:24px;line-height:24px;\">" +
"<table border=\"0\" style=\"width:100%;border-spacing:0px ; \">" +
"<tr style=\"width:100%;height:24x;\" border=\"0\">" +
"<td style=\"width:36%;\">报告日期：2017-11-22 11:12:09td>" +
"<td style=\"width:34%;\">报告医生：唐小小td>" +
"<td style=\"\">审核医生：李若曦td>" +
"tr>" +
"table>" +
"div>" +
"<div style=\"border-top:solid 2px #000;margin-top:6px;font-size:10px;font-weight:600;line-height:26px;padding-left:10px;\"> " +
"注：本报告仅供临床医师参考，影像科医师签字 后生效" +
"div>" +
"" +
"div>" +
"body>"
;
try {
// FileUtil.readAscFile(
byte[] bytes = HtmlToImageUtils.html2jpeg(Color.white, htmlstr,
1300, 1200, new EmptyBorder(0, 0,
0, 0));
//写入阿里云
InputStream instreams = new ByteArrayInputStream(bytes);
String resUrl= ossService.uploadObject(instreams, "mrUpload/",
UUID.randomUUID().toString(), com.hecross.common.util.FileUtils.getFileExt(".jpg"));
System.out.println(resUrl);
res.put("resUrl",resUrl);
} catch (Exception e) {
e.printStackTrace();
}**