# Common-Utils **Repository Path**: CandyPop/Common-Utils ## Basic Information - **Project Name**: Common-Utils - **Description**: No description available - **Primary Language**: Java - **License**: Not specified - **Default Branch**: master - **Homepage**: None - **GVP Project**: No ## Statistics - **Stars**: 0 - **Forks**: 0 - **Created**: 2021-03-12 - **Last Updated**: 2021-03-12 ## Categories & Tags **Categories**: Uncategorized **Tags**: None ## README # Common-Utils 平常总结的工具类，方便开发使用。 [TOC] ------ #### ArraysUtils [^]: 此类用于对数组的操作 "Array" ```java public static Number[] generateNumberArray(Number ... params）//将传入参数转化为一个数学数组 ``` ------ #### NumberUtils [^]: 此类用于对基本类型或者装箱类型的操作 "Number" ```java //传入的若干数学类型中是否有一个为空 public static boolean checkNumbersIsNotNull(Number... numbers) //传入数学参数中是否不为空 public static boolean checkNumberIsNotNull(Number number) //传入数学参数中是否为空 public static boolean checkNumberIsNull(Number number) ``` ------ #### ObjectUtils [^]: 此类用于对Object类型的相关的基本操作 "Object" ```java //判断一个对象是否为空 public static boolean checkObjcetIsNotNull(Object obj) //判断一个对象是否不为空 public static boolean checkObjcetIsNull(Object obj) //如果对象数组有一个为null，返回false; public static boolean checkObjectsIsNotNull(Object... objs) ``` ---- #### PDFUtils [^]: 对PDF文件进行操作，依赖于 `itext-4.2.1 ` > PDFUtils 主体类 > > > PDFHolder 用于生成PDFUtils > > > > StylePackage 对所需要的样式的封装 > > > > TableMaker 用于快速生成表格的对象 ```java //创建一个段落，使用默认的样式 public Paragraph createParagraph(String context) throws DocumentException //关闭document 与 Writer 的方法 public void close() //获得一个tableMaker public TableMaker getTableMaker() //----为TableMaker的api--start //用于生成一个表格，参数分别为多少行的表格，分配比例，具体分配比例 public TableMaker createTable(Integer colum, float totalNumber, float... precent) //生成一个单元格，内容，对齐方式，跨行数目 public TableMaker generateCell(String context,Integer align,int col) //生成一个标题，改标题将会跨越所有行，并且加粗居中 public TableMaker generateTableTitle(String context) //----------------------end ``` ##### example for PDFUtils ```java @Test public void TestPdfUtils() throws IOException, DocumentException { File file = new File("/demo.pdf"); FileOutputStream os = new FileOutputStream(file); PDFUtils document = PDFUtils.getInstance(os); document.createParagraph("Pop@Pipi"); document.close(); os.flush(); os.close(); } @Test public void TestPdfTable() throws Exception { File file = new File("/demo.pdf"); FileOutputStream os = new FileOutputStream(file); PDFUtils pdf = PDFUtils.getInstance(os); PDFUtils.TableMaker maker = pdf.getTableMaker().createTable(4, 10, new float[]{3f, 2f, 4f, 1f}) .generateTableTitle("表格测试"). generateCell("测试", null, 2).generateCell("文本", null, 0). generateCell("呵呵", PdfPCell.ALIGN_LEFT, 0); for (int i = 0; i < 8; i++) { maker.generateCell("内容" + i, null, 0); } pdf.addElement(maker.getTable()); maker.clear(); PDFUtils.TableMaker maker1 = pdf.getTableMaker().createTable(5, 10, new float[]{2f, 2f, 4f, 1f, 1}) .generateTableTitle("表格测试1"). generateCell("测试", null, 2).generateCell("文本", null, 0). generateCell("呵呵", PdfPCell.ALIGN_LEFT, 0) .generateCell("13413", Element.ALIGN_CENTER, 0); for (int i = 0; i < 10; i++) { maker.generateCell("内容" + i, null, 0); } pdf.addElement(maker.getTable()); pdf.close(); os.flush(); os.close(); } ``` #### HTML 将会拼装完成返回一个完整的HTML元素 ```java Map map = new HashMap(){{ put("1111","2222"); put("3333","2222"); put("4444","2222"); put("5555","2222"); put("6666","2222"); put("7777","2222"); }}; HTML.Select select = HTML.Select.getInstance(); select.appendOption(map); select.setOnChange("test()"); select.appendToHTML(); System.out.println(HTML.getBody()); ``` 首先每一个元素都可以通过HTML.**.getInstance()获得，并可以set需要的任何属性 当你对一个属性设置完成后，必须`appendToHTML`，添加到当前HTML主题中去 然后通过`HTML.getBody()`获得完成拼接后的元素。 ---- #### ShiroUtils 该工具主要为了完成`shiro`安全所打包的工具类，包括`shiro`的加密和权限。 ```java /** * Base64 加密 * @param src * @return */ public static String encodeBase64(String src){ return Base64.encodeToString(src.getBytes()); } /** * Base64 解密 * @param src * @return */ public static String decodeBase64(String src){ return Base64.decodeToString(src.getBytes());} //shiro内置的安全service配置 public static String serviceEncode(String src){ return hashService.computeHash(builder.setSource(ByteSource.Util.bytes(src.getBytes())).build()).toString(); } ``` ---- #### EChars 该工具可以生成`echars`图标 ```javaj @GetMapping(value="/echars",produces = "text/html;charset=UTF-8") @ResponseBody public String getCharss(){ List members = new ArrayList(); members.add(new Member("1","2","3","4")); members.add(new Member("5","6","7","8")); members.add(new Member("9","3","5","7")); members.add(new Member("9","2","3","4")); members.add(new Member("1","5","3","8")); ECharts eCharts=ECharts.getInstance(); eCharts.setSeriesType(SeriesType.BAR); eCharts.setXAxisData(new String[]{"周一","周二","周三","周四","周五"}); eCharts.setSeriesData(members, new SeriesMapper() { @Override public Map mapRow(Map map) { map.put("mid","号码"); map.put("name","名字"); map.put("addr","住址"); map.put("info","信息"); return map; } } ); return new Gson().toJson(eCharts); } ``` 输出效果 ```json { "tooltip": { "trigger": "axis", "axisPointer": { "type": "shadow" } }, "legend": {}, "grid": { "left": "3%", "right": "4%", "bottom": "3%", "containLabel": true }, "xAxis": [ { "type": "category", "data": [ "周一", "周二", "周三", "周四", "周五" ] } ], "yAxis": [ { "type": "value" } ], "series": [ { "name": "名字", "type": "bar", "data": [ "2", "6", "3", "2", "5" ] }, { "name": "号码", "type": "bar", "data": [ "1", "5", "9", "9", "1" ] }, { "name": "住址", "type": "bar", "data": [ "3", "7", "5", "3", "3" ] }, { "name": "信息", "type": "bar", "data": [ "4", "8", "7", "4", "8" ] } ] } ```