1 導入依賴
<!-- freemarker 讀取html模板文件 --> <dependency> <groupId>org.freemarker</groupId> <artifactId>freemarker</artifactId> <version>2.3.28</version> </dependency> <!-- xml 將html模板文件轉換成pdf --> <dependency> <groupId>org.xhtmlrenderer</groupId> <artifactId>flying-saucer-pdf</artifactId> <version>9.1.16</version> </dependency>
2 編寫test.ftl文件
<!DOCTYPE html> <html> <head> <meta charset="utf-8"/> <title></title> <style type="text/css"> body { font-family: FangSong; } </style> </head> <body> <p>${name}:</p> <p style="text-indent: 2em">哈哈哈</p> </body> </html>
3 PdfController
@ApiOperation("pdf生成")
@PostMapping(value = "pdfCreate")
public void pdfCreate(@RequestBody Map map) throws IOException {
pdfService.pdfCreate(map);
}
4 PdfServiceImpl
@Override public void pdfCreate(Map map) throws IOException { PdfUtil.pdfCreate(map,"test.ftl"); }
5 PdfUtil 工具類
public class PdfUtil { public static void pdfCreate(Map map,String templateFtlName) throws IOException { // 創建一個FreeMarker實例, 負責管理FreeMarker模板的Configuration實例 Configuration configuration = new Configuration(Configuration.DEFAULT_INCOMPATIBLE_IMPROVEMENTS); // 指定FreeMarker模板文件的位置 configuration.setClassForTemplateLoading(PdfUtil.class, "/template"); ITextRenderer renderer = new ITextRenderer(); ByteArrayOutputStream out = new ByteArrayOutputStream(); StringWriter writer = new StringWriter(); String fileName = String.valueOf(System.currentTimeMillis()) + ".pdf"; File file = new File("src/main/resources/template/result/" + fileName); OutputStream outputStream = new FileOutputStream(file); try { // 設置 css中 的字體樣式（暫時僅支持宋體和黑體） 必須，不然中文不顯示 ITextFontResolver fontResolver = renderer.getFontResolver(); fontResolver.addFont("src/main/resources/template/font/simsun.ttc", BaseFont.IDENTITY_H, BaseFont.NOT_EMBEDDED); fontResolver.addFont("src/main/resources/template/font/SIMFANG.TTF", BaseFont.IDENTITY_H, BaseFont.NOT_EMBEDDED); fontResolver.addFont("src/main/resources/template/font/MSYH.TTC", BaseFont.IDENTITY_H, BaseFont.NOT_EMBEDDED); fontResolver.addFont("src/main/resources/template/font/MSYHBD.TTC", BaseFont.IDENTITY_H, BaseFont.NOT_EMBEDDED); fontResolver.addFont("src/main/resources/template/font/MSYHL.TTC", BaseFont.IDENTITY_H, BaseFont.NOT_EMBEDDED); fontResolver.addFont("src/main/resources/template/font/SIMLI.TTF", BaseFont.IDENTITY_H, BaseFont.NOT_EMBEDDED); // 設置模板的編碼格式 configuration.setEncoding(Locale.CHINA, "UTF-8"); // 獲取模板文件 Template template = configuration.getTemplate(templateFtlName, "UTF-8"); // 將數據輸出到html中 template.process(map, writer); writer.flush(); String html = writer.toString(); // 把html代碼傳入渲染器中 renderer.setDocumentFromString(html); // 設置模板中的圖片路徑 （這里的images在resources目錄下） 模板中img標簽src路徑需要相對路徑加圖片名 如<img src="images/xh.jpg"/> // String url = PdfUtil.class.getClassLoader().getResource("static/images").toURI().toString(); // renderer.getSharedContext().setBaseURL(url); renderer.layout(); renderer.createPDF(out, false); out.flush(); renderer.finishPDF(); out.writeTo(outputStream); outputStream.close(); } catch (Exception e) { e.printStackTrace(); } finally { if (writer != null) { writer.close(); } if (out != null) { out.close(); } } } }
using System; using MySql.Data.MySqlClient; namespace mysql { class Program { static void Main(string[] args) { Console.WriteLine("Hello World!"); MySqlConnection mysql = getMySqlConnect(); //查詢 String sqlSearch = "select * from user"; //插入 String sqlInsert = "INSERT INTO USER(name,password) VALUES('user1', '123456')"; //更新 String sqlUpdate = "UPDATE user SET num = 1 where id = 12"; //刪除 String sqlDelete = "delete from user where id = 9"; MySqlCommand mySqlCommand = new MySqlCommand(sqlSearch, mysql); mysql.Open(); getResult(mySqlCommand); insert(new MySqlCommand(sqlInsert, mysql)); delete(new MySqlCommand(sqlDelete, mysql)); mysql.Close(); } //數據庫鏈接 public static MySqlConnection getMySqlConnect() { String mysqlStr = "Database=time;Data Source=47.116.66.21;User Id=root;Password=123456;pooling=false;CharSet=utf8;port=3306"; return new MySqlConnection(mysqlStr); } //建立執行命令語句對象 public static MySqlCommand GetMySqlCommand(String sqlStr, MySqlConnection mySqlConnection) { return new MySqlCommand(sqlStr, mySqlConnection); } //查詢並獲得結果集並遍歷 public static void getResult(MySqlCommand mySqlCommand) { MySqlDataReader reader = mySqlCommand.ExecuteReader(); try { while (reader.Read()) { if (reader.HasRows) { Console.WriteLine("============="); Console.WriteLine(reader.GetValue(0).ToString() + reader.GetValue(1).ToString() + reader.GetValue(2).ToString() + reader.GetValue(3).ToString() + reader.GetValue(4).ToString() + reader.GetValue(5).ToString() + reader.GetValue(6).ToString() + reader.GetValue(7).ToString()); } } } catch (Exception) { Console.WriteLine("查詢失敗"); } finally { reader.Close(); } } //插入數據 public static void insert(MySqlCommand mySqlCommand) { try { mySqlCommand.ExecuteNonQuery(); } catch(Exception e) { Console.WriteLine(e.Message); Console.WriteLine("插入失敗"); } } //更新數據 public static void update(MySqlCommand mySqlCommand) { try { mySqlCommand.ExecuteNonQuery(); } catch (Exception e) { Console.WriteLine(e.Message); Console.WriteLine("更新失敗"); } } //刪除數據 public static void delete(MySqlCommand mySqlCommand) { try { mySqlCommand.ExecuteNonQuery(); } catch (Exception e) { Console.WriteLine(e.Message); Console.WriteLine("刪除失敗"); } } } }