深色代码主题 复制 privateFileInputStream fileInputStream; Resource resource;privateImageSource imageS...
WorkbookFactory.create(FileInputStream) 时内存溢出的问题可以通过采用流式处理或其他优化策略来解决。当使用 WorkbookFactory.create(FileInputStream) 方法加载大型 Excel 文件时,可能会遇到内存溢出(OutOfMemoryError)的问题。这是因为该方法默认将整个文件加载到内存中,导致内存消耗过大。以下是一些解决这个问题的策略:...
From Excel Embedded Object to Base64 String in XML POIFSFileSystem fs = new POIFSFileSystem(pPart.getInputStream()); TikaInputStream stream = null; stream = TikaInputStream.get(fs.createDocumentInputStream("CONTENTS")); bytes = IOUtils.toByteArray(stream); String encoded = Base64.en...
InputStream inputStream = Resources.getResourceAsStream(resource); // 专门用来解析mapper映射文件 XMLMapperBuilder mapperParser = new XMLMapperBuilder(inputStream, configuration, resource, configuration.getSqlFragments()); // 通过XMLMapperBuilder解析mapper映射文件 mapperParser.parse(); } else if (resourc...
用Navicat连接数据库后,新建查询时,提示“cannot create file…… 文件名、目录名或卷标语法不正确”,如下图所示: 解决方案: 将连接属性–高级–设置位置中,所有“:”改为“_”; 错误原因: 在Windows系统中,文件名或文件夹名不允许使用下列字符(... ...
Open Gradle wrapper file The build file may be missing a Gradle plugin. Apply Gradle plugin 错误原因: android studio 引进项目时,自动查找本机是否有项目设置的SDK版本,若发现没有,我们会在project structure修改成自己的SDK。如下图: 然而,修改后,AS会自动在项目下的build.gradle里添加上以下代码: ...
前言 大家好,给大家带来Java中的读文件,文件的创建,写文件的概述,希望你们喜欢 读文件 public static void read(String path,String filename){ try{ int length=0; String str=""; byte buffer[] = new byte[10]; FileInputStream fis = new FileInputStream(new File(path,filename)); while((length使...
(ze instanceof Entry)) { return null; } final long start = ze.getDataOffset(); return createBoundedInputStream(start, ze.getCompressedSize()); } origin: org.apache.commons/commons-compress ZipFile.getInputStream(...) new BufferedInputStream(createBoundedInputStream(start, ze.getCompr...
ByteArrayInputStream; public class Main { public static void main(String[] args) { String str = "Byte Array InputStream test"; byte[] bytes = str.getBytes(); //from ww w. jav a 2s .c o m ByteArrayInputStream bis = new ByteArrayInputStream(bytes, 5, 5); int ch; while ...
Synchronously creates a ProtectedFileInputStream object from an existing protected file. Signature syntax 複製 public static ProtectedFileInputStream create(InputStream inputStream, String userId, AuthenticationRequestCallback authenticationContext, ConsentCallback consentCallback, int policyAcquisit...