当GlobalHeader中放入图片时，报错：java.io.IOException

版本：<version>2.11.10</version>
模块：pdfbox
错误原因：flush生成临时文件后，XEasyPdfImage等通过Stream加载的数据会被关闭，image会被清空。因此会导致下面的异常。我想可行的改动方法，方式一：调整XEasy的draw方法  方式二：每次flush后重新构建GlobalHeader；【目前我是用方式二解决的】
堆栈：
```
java.io.IOException: COSStream has been closed and cannot be read. Perhaps its enclosing PDDocument has been closed?

at org.apache.pdfbox.cos.COSStream.checkClosed(COSStream.java:83)
	at org.apache.pdfbox.cos.COSStream.createRawInputStream(COSStream.java:133)
	at org.apache.pdfbox.pdfwriter.COSWriter.visitFromStream(COSWriter.java:1268)
	at org.apache.pdfbox.cos.COSStream.accept(COSStream.java:416)
	at org.apache.pdfbox.pdfwriter.COSWriter.doWriteObject(COSWriter.java:570)
	at org.apache.pdfbox.pdfwriter.COSWriter.doWriteObjects(COSWriter.java:496)
	at org.apache.pdfbox.pdfwriter.COSWriter.doWriteBody(COSWriter.java:480)
	at org.apache.pdfbox.pdfwriter.COSWriter.visitFromDocument(COSWriter.java:1162)
	at org.apache.pdfbox.cos.COSDocument.accept(COSDocument.java:452)
	at org.apache.pdfbox.pdfwriter.COSWriter.write(COSWriter.java:1435)
	at org.apache.pdfbox.pdfwriter.COSWriter.write(COSWriter.java:1322)
	at org.apache.pdfbox.pdmodel.PDDocument.save(PDDocument.java:1379)
	at org.apache.pdfbox.pdmodel.PDDocument.save(PDDocument.java:1346)
	at wiki.xsx.core.pdf.doc.XEasyPdfDocument.flush(XEasyPdfDocument.java:717)
	at wiki.xsx.core.pdf.doc.XEasyPdfDocument.saveTemp(XEasyPdfDocument.java:997)
	at wiki.xsx.core.pdf.doc.XEasyPdfDocument.save(XEasyPdfDocument.java:766)
......
```
测试代码
```
public void testPdf() {
        // 定义pdf输出路径
        String outputPath = "D://out.pdf";

XEasyPdfText titleText = XEasyPdfHandler.Text.build("明细");
        titleText.setHorizontalStyle(XEasyPdfPositionStyle.CENTER);
        titleText.setFontSize(32);
        titleText.setMarginTop(15);
        XEasyPdfWatermark watermark = XEasyPdfHandler.Watermark.build("账单");
        // 如果需要动态加Page，需要使用定制的对象；
        XEasyPdfDocument document = XEasyPdfHandler.Document.build();
        document.setGlobalHeader(XEasyPdfHandler.Header.build(
                XEasyPdfHandler.Image.build(
                        new File("C:\\Users\\涂\\Pictures\\1_加入_创建社区.png"))));
        document.setGlobalWatermark(watermark);

int[] cellWidth = {130, 80, 80, 262};

for (int current = 1; current <= GENERATE_PAGE; current++) {
            XEasyPdfPage xEasyPdfPage = generatePage(current, cellWidth);
            document.flush();
            document.addPage(xEasyPdfPage);
        }
        document.save(outputPath).close();
    }
```

dromara/x-easypdf

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dromara/x-easypdf .gitee-modal { width: 500px !important; }

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