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请帮助，错误是“返回的sqlite：错误代码= 1，msg =靠近“端口”：语法错误，请帮助“：

此代码强制停止我的应用程序，请帮助纠正错误。

public static String DATABASENAME = "ftpdb";
public static String FTPTABLE = "fAccounts";
public static String colId = "id";
public static String colNmae = "name";
public static String colUserName = "username";
public static String colPassword = "password";
public static String colPort = "port";
public static String colHost = "host";
private ArrayList<FTPModel> ftpList = new ArrayList<FTPModel>();
Context c;

public DatabaseHelper(Context context) {
    super(context, DATABASENAME, null, 33);
    c = context;
}

@Override
public void onCreate(SQLiteDatabase db) {

    db.execSQL("CREATE TABLE if not exists ftpAccounts(id INTEGER PRIMARY KEY AUTOINCREMENT,"
            + "name" + " TEXT ," + "username" + " TEXT," + "password" + " TEXT)" + "port" + " TEXT)" + "host" + " TEXT)");

}

@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
    db.execSQL("DROP TABLE IF EXISTS" + FTPTABLE );
    onCreate(db);
}

public void addProduct(FTPModel fm) {
    SQLiteDatabase db = this.getWritableDatabase();
    ContentValues contentValues = new ContentValues();
    contentValues.put("name", fm.name);
    contentValues.put("username", fm.username);
    contentValues.put("password", fm.password);
    contentValues.put("port", fm.port);
    contentValues.put("host", fm.host); 

    db.insert("ftpAccounts", null, contentValues);
    db.close();

}


public void removeProduct(String name, String username, String password, String port, String host) {
    try {

        String[] args = { name };
        getWritableDatabase().delete("ftpAccounts", "name=?", args);

    } catch (Exception e) {

    }
}

public ArrayList<FTPModel> getAccounts() {

    ftpList.clear();

    SQLiteDatabase db = this.getWritableDatabase();
    Cursor cursor = db.rawQuery("select * from ftpAccounts", null);
    if (cursor.getCount() != 0) {
        if (cursor.moveToFirst()) {
            do {
                FTPModel item = new FTPModel();

                item.name = cursor.getString(cursor
                        .getColumnIndex("name"));

                item.username = cursor.getString(cursor
                        .getColumnIndex("username"));

                item.password= cursor.getString(cursor
                        .getColumnIndex("password"));

                item.port= cursor.getString(cursor
                        .getColumnIndex("port"));

                item.host= cursor.getString(cursor
                        .getColumnIndex("host"));

                ftpList.add(item);

            } while (cursor.moveToNext());
        }
    }
    cursor.close();
    db.close();
    return ftpList;
}

}

请帮助更正代码，非常感谢

4

2 回答 2

2

改变这个：

db.execSQL("CREATE TABLE if not exists ftpAccounts(id INTEGER PRIMARY KEY AUTOINCREMENT,"
            + "name" + " TEXT ," + "username" + " TEXT," + "password" + " TEXT)" + "port" + " TEXT)" + "host" + " TEXT)");

对此：

db.execSQL("CREATE TABLE if not exists ftpAccounts(" + colId + "INTEGER PRIMARY KEY AUTOINCREMENT,"
            + colName + " TEXT ," + colUserName + " TEXT," + colPassword + " TEXT," + colPort + " TEXT," + colHost + " TEXT)");

你有几个额外的括号而不是逗号。完全忘记了您想使用变量作为列名。

于 2013-06-17T21:40:01.987 回答
1

如果您发现自己遇到SQL 语法错误，您应该（暂时）在执行之前以某种方式将其打印出来。

这几乎总能准确地告诉你问题出在哪里。如果您在这种情况下对查询执行此操作，您会看到如下内容：

CREATE TABLE if not exists ftpAccounts(id INTEGER PRIMARY KEY AUTOINCREMENT,name TEXT ,username TEXT,password TEXT)port TEXT)host TEXT)

（并且稍微重新格式化以使阅读更容易）：

CREATE TABLE if not exists ftpAccounts(
    id INTEGER PRIMARY KEY AUTOINCREMENT,
    name TEXT ,
    username TEXT,
    password TEXT)port TEXT)host TEXT)

现在看到了吗？应该可以立即识别出问题所在。在逗号应该在的列说明符password和列说明符的末尾有右括号。port

而且，顺便说一句，我不完全确定您认为通过连接所有这些字符串可以获得什么。如果您想要可读的代码，这是一个足够好的理由，但我建议最好这样做：

db.execSQL("CREATE TABLE if not exists ftpAccounts(" +
           "    id       INTEGER PRIMARY KEY AUTOINCREMENT," +
           "    name     TEXT," +
           "    username TEXT," +
           "    password TEXT," +
           "    port     TEXT," +
           "    host     TEXT)"
);

因此您可以在易于区分的部分中看到语句组件。

您可能想要查看的另一件事是port作为文本项目的适用性。它可能会更好地存储为整数类型。

于 2015-05-27T01:42:17.017 回答