chr35的专栏

Mybatis拦截器修改sql，Mybatis拦截器获取传入参数

java中神奇的i=i++

spring 服务拆分迁移

PdfPCell cell = new PdfPCell();cell.setRowspan(2);//纵向合并 2行cell.setColspan(3);//横向合并 3行itextpdf 5.4.3

横向合并Workbook workbook =sheetUtils.exportExcel(dto);CellRangeAddress craOne = new CellRangeAddress(0, 1, 0, 1);//CellRangeAddress(第几行开始，第几行结束，第几列开始，第几列结束)workbook.getSheetAt(0).addMergedRegion(craOne);支持横向和纵向纵向合并PoiMergeCellUtil.mergeCells(w

@Servicepublic class MyService{ @Autowired DataSourceTransactionManager transactionManager; public ResultMap lockStockWhenNewOrder(List<StockChangeByOrderDto> goodsModels) { //2.获取事务定义 DefaultTransactionDefinition d.

不面试不知道自己多菜，看题class Simple { class InnerClass {} void test1(){ InnerClass innerClass = new InnerClass(); } public static void test2(){ new innerClass(); } public static void main(String[] args) { new inne

不面试不知道自己有多菜，遇到一个类初始化的面试题，写不出来只能亡羊补牢了class Simple { private static Simple simple = new Simple(); private ChildObject childObject = new ChildObject(); public Simple() { System.out.println("Simple"); } public static void main(

@Configurationpublic class WebSocketExConfig { /** * The bean shown in the preceding example registers any @ServerEndpoint * annotated beans with the underlying WebSocket container. W...

主要问题在path的查找顺序，从前往后，之前安装的版本有可能在类似C:\Program Files (x86)\Common Files\Oracle\Java\javapath%SystemRoot%\system32的目录中有备份，控制台在查找时先检查到上述目录，发现java.exe、javaw.exe等文件就直接调用了。解决办法，删掉上述位置的文件，或者 %JAVA_HOME...

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