Java如何从数据库获取所有表名？
package org.nhooo.example.jdbc;
import java.sql.*;
public class GettingTableListExample {
private static final String URL = "jdbc:mysql://localhost/nhooo";
private static final String USERNAME = "root";
private static final String PASSWORD = "";
public static void main(String[] args) throws Exception {
try (Connection connection =
DriverManager.getConnection(URL, USERNAME, PASSWORD)) {
//获取数据库的元数据
DatabaseMetaData metaData = connection.getMetaData();
String[] types = {"TABLE"};
ResultSet rs = metaData.getTables(null, null, "%", types);
while (rs.next()) {
String tableCatalog = rs.getString(1);
String tableSchema = rs.getString(2);
String tableName = rs.getString(3);
System.out.printf("%s - %s - %s%n",
tableCatalog, tableSchema, tableName);
}
}
}
}结果如下：
nhooo - null - authors nhooo - null - book_authors nhooo - null - books
Maven依赖
<!-- https://search.maven.org/remotecontent?filepath=mysql/mysql-connector-java/8.0.17/mysql-connector-java-8.0.17.jar -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>8.0.17</version>
</dependency>