parent
4686fa0122
commit
f191808d8f
@ -1,28 +0,0 @@
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package hunnu.sj.raise_money.DataBase;
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import java.sql.Connection;
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import java.sql.DriverManager;
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import java.sql.SQLException;
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public class DataBase {
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private static String driver = "com.mysql.jdbc.Driver";// MySQL驱动
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private static String url = "jdbc:mysql://localhost:3306/dogson";//MYSQL数据库连接Url
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private static String user = "root";//用户名
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private static String password = "";/* 密码 */
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//连接数据库
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public static Connection getConn(){
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Connection conn = null;
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try {
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Class.forName(driver);//获取MYSQL驱动
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conn = DriverManager.getConnection(url, user, password);//获取连接
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} catch (ClassNotFoundException e) {
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e.printStackTrace();
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} catch (SQLException e) {
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e.printStackTrace();
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}
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return conn;
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}
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}
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@ -0,0 +1,22 @@
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package hunnu.sj.raise_money.DataBase;
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import android.content.Context;
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import android.database.sqlite.SQLiteDatabase;
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import android.database.sqlite.SQLiteDatabase.CursorFactory;
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import android.database.sqlite.SQLiteOpenHelper;
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public class DatabaseHelper extends SQLiteOpenHelper {
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static String name="user.db";
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static int dbVersion=1;
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public DatabaseHelper(Context context) {
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super(context, name, null, dbVersion);
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}
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public void onCreate(SQLiteDatabase db) {
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String sql="create table user(id integer primary key autoincrement,username varchar(20),password varchar(20),role varchar(20))";
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db.execSQL(sql);
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}
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public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
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}
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}
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@ -0,0 +1,51 @@
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package hunnu.sj.raise_money.DataBase;
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import android.content.Context;
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import android.database.Cursor;
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import android.database.sqlite.SQLiteDatabase;
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import hunnu.sj.raise_money.User;
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public class UserService {
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public DatabaseHelper dbHelper;
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public UserService(Context context){
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dbHelper=new DatabaseHelper(context);
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}
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public int login(String username,String password){
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SQLiteDatabase sdb=dbHelper.getReadableDatabase();
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String sql1 = "select * from user where username = ?";
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String sql2 = "select * from user where username=? and password=?";
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Cursor cursor1=sdb.rawQuery(sql1, new String[]{username});
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Cursor cursor2=sdb.rawQuery(sql2, new String[]{username,password});
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if(cursor1.moveToFirst()==false){
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cursor1.close();
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cursor2.close();
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return 0;
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}
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if(cursor2.moveToFirst()==false){
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cursor1.close();
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cursor2.close();
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return 1;
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}
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cursor1.close();
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cursor2.close();
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return 2;
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}
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public boolean register(User user){
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SQLiteDatabase sdb=dbHelper.getReadableDatabase();
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String sql="insert into user(username,password,role) values(?,?,?)";
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Object obj[]={user.getName(),user.getPasd(),user.getRole()};
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sdb.execSQL(sql, obj);
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return true;
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}
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public String getRole(String username){
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SQLiteDatabase sdb=dbHelper.getReadableDatabase();
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String sql="select role from user where username = ?";
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Cursor cursor=sdb.rawQuery(sql, new String[]{username});
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cursor.moveToFirst();
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String role = cursor.getString(cursor.getColumnIndex("role"));
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return role;
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}
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}
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