java一键生成数据库说明文档html格式
在Java中,可以使用JDBC(Java Database Connectivity)和一些HTML模板来生成数据库说明文档。以下是一个简单的例子,演示如何连接到数据库并使用HTML模板生成说明文档:
import java.sql.*;
import java.io.*;
public class DatabaseDocumentationGenerator {
public static void main(String[] args) throws Exception {
// 数据库连接配置
String url = "jdbc:mysql://localhost:3306/your_database";
String user = "your_username";
String password = "your_password";
// 连接数据库
Connection conn = DriverManager.getConnection(url, user, password);
// 获取数据库元数据
DatabaseMetaData metaData = conn.getMetaData();
// 读取HTML模板
String template = new String(Files.readAllBytes(
Paths.get("template.html")), "UTF-8");
// 替换模板中的占位符
String html = template
.replace("{{DATABASE_NAME}}", metaData.getDatabaseProductName())
.replace("{{TABLES_INFO}}", getTablesInfo(conn));
// 输出HTML文件
Files.write(Paths.get("database_doc.html"), html.getBytes("UTF-8"));
// 关闭连接
conn.close();
}
private static String getTablesInfo(Connection conn) throws SQLException {
StringBuilder tablesInfo = new StringBuilder();
ResultSet tables = conn.getMetaData().getTables(null, null, "%", null);
while (tables.next()) {
String tableName = tables.getString("TABLE_NAME");
String columnsInfo = getColumnsInfo(conn, tableName);
tablesInfo.append("<h2>").append(tableName).append("</h2>").append(columnsInfo);
}
return tablesInfo.toString();
}
private static String getColumnsInfo(Connection conn, String tableName) throws SQLException {
StringBuilder columnsInfo = new StringBuilder();
ResultSet columns = conn.getMetaData().getColumns(null, null, tableName, "%");
while (columns.next()) {
String columnName = columns.getString("COLUMN_NAME");
String dataType = columns.g
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