每日随笔

今天研究了模糊查询的相关语句，其中有and和or两种模式

public List<Bean> searchByName(String str) throws SQLException{//查询条件方法
String sql="select * from person where(name like '%"+str+"%')";
Connection conn=DBUtil.getConnection();
Statement st=null;
PreparedStatement pt = conn.prepareStatement(sql);
List<Bean> search=new ArrayList<>();
ResultSet rs=null;
Bean bean=null;
try {
pt=conn.prepareStatement(sql);
rs=pt.executeQuery();
while(rs.next()) {
int id=rs.getInt("id");
String hubie = rs.getString("hubie");
String livetype = rs.getString("livetype");
int area=rs.getInt("area");
int roomnum=rs.getInt("roomnum");
String name = rs.getString("name");
String idcard=rs.getString("idcard");
String sex = rs.getString("sex");
String nation = rs.getString("nation");
String education = rs.getString("education");
bean=new Bean(id,hubie,livetype,area,roomnum, name, idcard, sex,nation, education);
search.add(bean);
}
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
finally {
DBUtil.close(rs, st, conn);
}
return search;
}