最近看见朋友写了一个导出数据库生成word文档的业务，感觉很有意思，研究了一下，这里也拿出来与大家分享一波~
先来看看生成的word文档效果吧
下面我们也来一起简单的实现吧
二、Java 导出数据库表信息生成Word文档温馨小提示：下面只是简单的展示一些主要代码，详情可参考文末给出的案例demo源码
基本环境- spring-boot 2.1.8
- mybatis-plus 2.2.0
- mysql 数据库
com.lowagie
itext
2.1.7
com.itextpdf
itext-asian
5.2.0
com.lowagie
itext-rtf
2.1.7
@Mapper
public interface TableMapper {
@Select("select table_name as name,table_comment as comment from information_schema.tables where table_schema =#{dbName} order by table_name")
List getAllTables(@Param("dbName") String dbName);
@Select("SHOW FULL FIELDS FROM ${tableName}")
List getTable(@Param("tableName") String tableName);
}
@Service
public class TableService implements ITableService {
@Autowired
private TableMapper tableMapper;
@Autowired
private TableToWordUtil tableToWordUtil;
@Override
public String getTableInfo() {
// 1、获取数据库所有表信息
List tables = tableMapper.getAllTables(Constants.DATAbase);
// 2、生成文件名信息 - 年月日时分秒
String date = null;
try {
date = DateTimeUtils.dateFormat(new Date(), DateTimeUtils.PARSE_PATTERNS[12]);
} catch (ParseException e) {
e.printStackTrace();
}
String docFileName = Constants.FILE_PATH + "\" + Constants.FILE_NAME + "-" + date + ".doc";
// 3、调用工具类生成文件
tableToWordUtil.toWord(tables, docFileName, Constants.FILE_NAME);
// 4、返回文件地址
String filePath = docFileName.replaceAll("\\", "/");
return filePath;
}
}
@Service
public class TableToWordUtil {
@Autowired
TableMapper tableMapper;
public void toWord(List tables, String fileName, String title) {
document document = new document(PageSize.A4);
try {
// 创建文件夹
File dir = new File(Constants.FILE_PATH);
dir.mkdirs();
// 创建文件
File file = new File(fileName);
if (file.exists() && file.isFile()) {
file.delete();
}
file.createNewFile();
// 写入文件信息
RtfWriter2.getInstance(document, new FileOutputStream(fileName));
document.open();
Paragraph ph = new Paragraph();
Font f = new Font();
Paragraph p = new Paragraph(title, new Font(Font.NORMAL, 24, Font.BOLDITALIC, new Color(0, 0, 0)));
p.setAlignment(1);
document.add(p);
ph.setFont(f);
for (int i = 0; i < tables.size(); i++) {
String table_name = tables.get(i).getName();
String table_comment = tables.get(i).getComment();
List fileds = tableMapper.getTable(tables.get(i).getName());
String all = "" + (i + 1) + " 表名称:" + table_name + "（" + table_comment + "）";
Table table = new Table(6);
document.add(new Paragraph(""));
table.setBorderWidth(1);
table.setPadding(0);
table.setSpacing(0);
//添加表头的元素，并设置表头背景的颜色
Color chade = new Color(176, 196, 222);
Cell cell = new Cell("编号");
addCell(table, cell, chade);
cell = new Cell("字段名");
addCell(table, cell, chade);
cell = new Cell("类型");
addCell(table, cell, chade);
cell = new Cell("是否非空");
addCell(table, cell, chade);
cell = new Cell("是否主键");
addCell(table, cell, chade);
cell = new Cell("注释");
addCell(table, cell, chade);
table.endHeaders();
// 表格的主体
for (int k = 0; k < fileds.size(); k++) {
addContent(table, cell, (k + 1) + "");
addContent(table, cell, fileds.get(k).getField());
addContent(table, cell, fileds.get(k).getType());
addContent(table, cell, fileds.get(k).getNull().equals("YES") ? "否" : "是");
addContent(table, cell, fileds.get(k).getKey() != "" ? "是" : "否");
addContent(table, cell, fileds.get(k).getComment());
}
Paragraph pheae = new Paragraph(all);
//写入表说明
document.add(pheae);
//生成表格
document.add(table);
}
document.close();
} catch (Exception e) {
e.printStackTrace();
}
}
private void addCell(Table table, Cell cell, Color chade) {
cell.setHorizontalAlignment(Element.ALIGN_CENTER);
cell.setBackgroundColor(chade);
table.addCell(cell);
}
private void addContent(Table table, Cell cell, String content) {
cell = new Cell(content);
cell.setHorizontalAlignment(Element.ALIGN_CENTER);
table.addCell(cell);
}
}
public class Constants {
public static final String DATAbase = "demo";
public static final String FILE_NAME = "测试数据库";
public static String FILE_PATH = "D:\www";
}
小编在demo中提供了一个get请求的接口http://localhost:8080/api/tableToWord
接下来我们就可以去返回的地址中查看生成文件了
https://gitee.com/zhengqingya/java-workspace
