Easyexcl export 1million lines of EXECL report font error solution

Use easyexecl do 100 Line ten thousand csv Export of , Two errors will be reported , It's all because of openjdk Compact install to docker Inside , The problem of missing Fonts .

Error details ：

/usr/local/openjdk-17/lib/libfontmanager.so: libfreetype.so.6: cannot open shared object file: No such file or directory

2022-06-24 14:39:00.045  INFO 1 --- [nio-5010-exec-2] c.f.b.b.c.BillingDetailController        :  export execl1656081540043
2022-06-24 14:39:05.980 ERROR 1 --- [nio-5010-exec-2] o.a.c.c.C.[.[.[/].[dispatcherServlet]    : Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception is com.alibaba.excel.exception.ExcelGenerateException: java.lang.UnsatisfiedLinkError: /usr/local/openjdk-17/lib/libfontmanager.so: libfreetype.so.6: cannot open shared object file: No such file or directory] with root cause

java.lang.UnsatisfiedLinkError: /usr/local/openjdk-17/lib/libfontmanager.so: libfreetype.so.6: cannot open shared object file: No such file or directory
 at java.base/jdk.internal.loader.NativeLibraries.load(Native Method) ~[na:na]
 at java.base/jdk.internal.loader.NativeLibraries$NativeLibraryImpl.open(NativeLibraries.java:388) ~[na:na]
 at java.base/jdk.internal.loader.NativeLibraries.loadLibrary(NativeLibraries.java:232) ~[na:na]
 at java.base/jdk.internal.loader.NativeLibraries.loadLibrary(NativeLibraries.java:174) ~[na:na]
 at java.base/jdk.internal.loader.NativeLibraries.findFromPaths(NativeLibraries.java:315) ~[na:na]
 at java.base/jdk.internal.loader.NativeLibraries.loadLibrary(NativeLibraries.java:285) ~[na:na]
 at java.base/java.lang.ClassLoader.loadLibrary(ClassLoader.java:2398) ~[na:na]
 at java.base/java.lang.Runtime.loadLibrary0(Runtime.java:818) ~[na:na]
 at java.base/java.lang.System.loadLibrary(System.java:1989) ~[na:na]
 at java.desktop/sun.font.FontManagerNativeLibrary$1.run(FontManagerNativeLibrary.java:58) ~[na:na]
 at java.base/java.security.AccessController.doPrivileged(AccessController.java:318) ~[na:na]
 at java.desktop/sun.font.FontManagerNativeLibrary.<clinit>(FontManagerNativeLibrary.java:33) ~[na:na]
 at java.desktop/sun.font.SunFontManager$1.run(SunFontManager.java:275) ~[na:na]
 at java.desktop/sun.font.SunFontManager$1.run(SunFontManager.java:273) ~[na:na]
 at java.base/java.security.AccessControlle

perhaps

java.lang.NoClassDefFoundError: Could not initialize class sun.awt.X11FontManager

nerateException: java.lang.NoClassDefFoundError: Could not initialize class sun.awt.X11FontManager] with root cause

java.lang.NoClassDefFoundError: Could not initialize class sun.awt.X11FontManager
 at java.base/java.lang.Class.forName0(Native Method) ~[na:na]
 at java.base/java.lang.Class.forName(Class.java:467) ~[na:na]
 at java.desktop/sun.font.FontManagerFactory$1.run(FontManagerFactory.java:83) ~[na:na]
 at java.base/java.security.AccessController.doPrivileged(AccessController.java:318) ~[na:na]
 at java.desktop/sun.font.FontManagerFactory.getInstance(FontManagerFactory.java:75) ~[na:na]
 at java.desktop/java.awt.Font.getFont2D(Font.java:526) ~[na:na]
 at java.desktop/java.awt.Font.canDisplayUpTo(Font.java:2282) ~[na:na]
 at java.desktop/java.awt.font.TextLayout.singleFont(TextLayout.java:469) ~[na:na]
 at java.desktop/java.awt.font.TextLayout.<init>(TextLayout.java:530) ~[na:na]
 at org.apache.poi.ss.util.SheetUtil.getDefaultCharWidth(SheetUtil.java:273) ~[poi-4.1.2.jar:4.1.2]
 at org.apache.poi.xssf.streaming.AutoSizeColumnTracker.<init>(AutoSizeColumnTracker.java:117) ~[poi-ooxml-4.1.2.jar:4.1.2]
 at org.apache.poi.xssf.streaming.SXSSFSheet.<init>(SXSSFSheet.java:82) ~[poi-ooxml-4.1.2.jar:4.1.2]
 at org.apache.poi.xssf.streaming.SXSSFWorkbook.createAndRegisterSXSSFSheet(SXSSFWorkbook.java:684) ~[poi-ooxml-4.1.2.jar:4.1.2]
 at org.apache.poi.xssf.streaming.SXSSFWorkbook.createSheet(SXSSFWorkbook.java:705) ~[poi-ooxml-4.1.2.jar:4.1.2]
 at org.apache.poi.xssf.streaming.SXSSFWorkbook.createSheet(SXSSFWorkbook.java:88) ~[poi-ooxml-4.1.2.jar:4.1.2]
 at com.alibaba.excel.util.WorkBookUtil.createSheet(WorkBookUtil.java:84) ~[easyexcel-core-3.1.1.jar:na]
 at com.alibaba.excel.context.WriteContextImpl.createSheet(WriteContextImpl.java:223) ~[easyexcel-core-3.1.1.jar:na]
 at com.alibaba.excel.context.WriteContextImpl.initSheet(WriteContextImpl.java:182) ~[easyexcel-core-3.1.1.jar:na]
 at com.alibaba.excel.context.WriteContextImpl.currentSheet(WriteContextImpl.java:135) ~[easyexcel-core-3.1.1.ja

A new image is needed , With openjdk17 For example

1、 edit dockerfile file

FROM openjdk:17-alpine

#  solve easyExcel Export missing Fonts bug
RUN apk add --update ttf-dejavu fontconfig && rm -rf /var/cache/apk/*

2、IDEA To configure docker plug-in unit

The installation steps can be done by yourself google once

3、 install Docker Desktop

Install the configuration and its registration , Sure google Inquire about

4、 function dockerfile

5、 Push and view docker-hub Whether there is , Be sure to type in your own user name tag, Otherwise, the push will fail

6 、 Log in to the server that needs this image , Pull down or configure the image gradle Automatically pull the image

Or configure the dependent image

7、 Re deploy the application , Restart , That is not an error

Note appended ：esayExcel Export code for

/**
	 *  export excel
	 */
	@RequestMapping("/xxxexportcsv100")
	fun export(response: HttpServletResponse) {
    
		val startTime = System.currentTimeMillis()
		logger.info(" export execl$startTime")
		val outputStream: OutputStream = response.outputStream
		val time = SimpleDateFormat("yyyy-MM-dd-hh-mm-ss").format(Date())
		response.setHeader("Content-disposition", "attachment; filename=contract$time.xlsx")
		response.contentType = "application/octet-stream;charset=UTF-8"
		response.setHeader("Pragma", "No-cache")
		response.setHeader("Cache-Control", "no-cache")
		response.setDateHeader("Expires", 0)
		val count: Int = billingDetailService.countByIdIsNotNull()
		// If the total amount of data is redundant 10 ten thousand , Paging export 
		if (count > 100000) {
    
			// How many per page 
			val max = 100000
			// Must be placed outside the loop , Otherwise, it will be new 
			val excelWriter: ExcelWriter = EasyExcel.write(outputStream).build()
			for (i in 0 until count / max + 1) {
    

				val exportList: List<BillingDetailResourceDto> = billingDetailService.findAllBySize(i, max)

				val writeSheet: WriteSheet =
					EasyExcel.writerSheet(i, " bill " + (i + 1)).head(BillingDetailResourceDto::class.java)
						.registerWriteHandler(LongestMatchColumnWidthStyleStrategy()).build()
				excelWriter.write(exportList, writeSheet)
				logger.info("100000 That's ok ===${System.currentTimeMillis()}")
			}
			// Refresh stream 
			excelWriter.finish()
		} else {
    
			val exportList: List<BillingDetailResourceDto> = billingDetailService.findAllBySize(0, count)
			EasyExcel.write(outputStream, BillingDetailResourceDto::class.java)
				.registerWriteHandler(LongestMatchColumnWidthStyleStrategy()).sheet(" bill ").doWrite(exportList)
		}
		outputStream.flush()
		response.outputStream.close()
		val endTime = System.currentTimeMillis()
		logger.info(" export execl end $endTime== Time consuming =${endTime - startTime}")

	}