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Java 操作 SQLite 数据库

2015-07-15 23:40 686 查看
SQLite JDBC is a library for accessing SQLite databases through the JDBC API. For the general usage of JDBC, see JDBC Tutorial or Oracle
JDBC Documentation.

Download sqlite-jdbc-(VERSION).jar from the download page (or by using Maven)
then append this jar file into your classpath.
Load the JDBC driver 
org.sqlite.JDBC
from
your code. (see the example below)

More usage examples are available at https://bitbucket.org/xerial/sqlite-jdbc/wiki/Usage

Usage Example (Assuming 
sqlite-jdbc-(VERSION).jar
is
placed in the current directory)

> javac Sample.java
> java -classpath ".;sqlite-jdbc-(VERSION).jar" Sample   # in Windows
or
> java -classpath ".:sqlite-jdbc-(VERSION).jar" Sample   # in Mac or Linux
name = leo
id = 1
name = yui
id = 2


Sample.java

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;

public class Sample
{
public static void main(String[] args) throws ClassNotFoundException
{
// load the sqlite-JDBC driver using the current class loader
Class.forName("org.sqlite.JDBC");

Connection connection = null;
try
{
// create a database connection
connection = DriverManager.getConnection("jdbc:sqlite:sample.db");
Statement statement = connection.createStatement();
statement.setQueryTimeout(30);  // set timeout to 30 sec.

statement.executeUpdate("drop table if exists person");
statement.executeUpdate("create table person (id integer, name string)");
statement.executeUpdate("insert into person values(1, 'leo')");
statement.executeUpdate("insert into person values(2, 'yui')");
ResultSet rs = statement.executeQuery("select * from person");
while(rs.next())
{
// read the result set
System.out.println("name = " + rs.getString("name"));
System.out.println("id = " + rs.getInt("id"));
}
}
catch(SQLException e)
{
// if the error message is "out of memory",
// it probably means no database file is found
System.err.println(e.getMessage());
}
finally
{
try
{
if(connection != null)
connection.close();
}
catch(SQLException e)
{
// connection close failed.
System.err.println(e);
}
}
}
}



How to Specify Database Files

Here is an example to select a file 
C:\work\mydatabase.db
(in
Windows)

Connection connection = DriverManager.getConnection("jdbc:sqlite:C:/work/mydatabase.db");


A UNIX (Linux, Mac OS X, etc) file 
/home/leo/work/mydatabase.db


Connection connection = DriverManager.getConnection("jdbc:sqlite:/home/leo/work/mydatabase.db");



How to Use Memory Databases

SQLite supports on-memory database management, which does not create any database files. To use a memory database in your Java code, get the database connection as follows:

Connection connection = DriverManager.getConnection("jdbc:sqlite::memory:");
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