jdbc 对sqlite的基本操作
1.向数据库中创建表
public void addTable( String dbpath) { //创建表单的sql语句 String createtablesql= " CREATE TABLE T_AFAF_AREA(PID TEXT,STDNAME TEXT) "; //这里的TEXT 类型根据需要改变 try{ Class.forName("org.sqlite.JDBC"); Connection conn = DriverManager.getConnection("jdbc:sqlite:"+dbpath); Statement stmt = conn.createStatement(); //巡检表 stmt.executeUpdate(createtablesql); }catch(Exception e) { e.printStackTrace(); } }
2.从 .db 文件中删除表
这里只贴出来语句其他都一样
//判断巡检表是否存在 存在 则删除 String deletetablesql = " drop table if exists T_EXAMINEDATA ";
3 . 从 .db 文件中读取信息
public List <TStreetsExamine> queryTStreetsExamine(String dbpath) { List <TStreetsExamine> list = new ArrayList<TStreetsExamine>(); try{ Class.forName("org.sqlite.JDBC"); Connection conn = DriverManager.getConnection("jdbc:sqlite:"+dbpath); Statement stmt = conn.createStatement(); ResultSet res = stmt.executeQuery(" select * from T_STREETS_SURVEY "); while(res.next()) { //公共部分 String pid = res.getString("PID"); //......................................这里省略n行 list.add(te); } res.close(); stmt.close(); res.close(); } catch(Exception e) { e.printStackTrace(); } return list; }
4.向.db文件中写入数据
public void addStreets(TStreets te ,String dbpath) { try{ Class.forName("org.sqlite.JDBC"); Connection conn = DriverManager.getConnection("jdbc:sqlite:"+"E://toponymsurvey11122.db"); Statement stmt = conn.createStatement(); PreparedStatement pstmt = null ; // 数据库操作 String sql = " INSERT INTO T_STREETS(PID ,STDENAME) VALUES (?,?) " ; pstmt = conn.prepareStatement(sql) ; pstmt.setString(1,te.getPid()) ; pstmt.setString(2,te.getStdname()) ; pstmt.executeUpdate() ; // 执行更新 pstmt.close() ; stmt.close(); conn.close(); }catch(Exception e) { e.printStackTrace(); } }
5 需要导入的驱动包
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