我正在尝试将CSV文件导入我的SQLite数据库，但出现错误。
file.csv
EMP0003 |样本| S @ mple | SATO | TEST |目的地| 00008888 | ST0001 | EMP0003 |东部 位置| 0000001XABC ---->这是我的csv文件，但只能转到 E'|'M'|'P'|'0'|'0'|'0'|'3'|'|'|'s'|'a'|'m'并非所有文本
String columns = "employee_num, username, password, firstname, lastname, address, contact, van, salesman_code, station_code, machine_id";
String str1 = "INSERT INTO " + tableName + " (" + columns + ") values(" ;
String str2 = ");";
mydb.beginTransaction();
while ((line = buffer.readLine()) !=null ) {
StringBuilder sb = new StringBuilder(str1);
String[] str = line.split("'|' ");
sb.append("'" + str[0] + "'|'");
sb.append(str[1]+ "'|'");
sb.append(str[2]+ "'|'");
sb.append(str[3]+ "'|'");
sb.append(str[4]+ "'|'");
sb.append(str[5]+ "'|'");
sb.append(str[6]+ "'|'");
sb.append(str[7]+ "'|'");
sb.append(str[8]+ "'|'");
sb.append(str[9]+ "'|'");
sb.append(str[10]+ "'|'");
sb.append(str[11].replace("'", "") + "'");
mydb.execSQL(sb.toString());
}
错误
Error : E/SQLiteLog: (1) near "'m'": syntax error
/ W/System.err: android.database.sqlite.SQLiteException: near "'m'": syntax error (code 1): , while compiling: INSERT INTO tbl_user (employee_num, username, password, firstname, lastname, address, contact, van, salesman_code, station_code, machine_id) values('','E'|'M'|'P'|'0'|'0'|'0'|'3'|'|'|'s'|'a'|'m'
/ W/System.err: at android.database.sqlite.SQLiteConnection.nativePrepareStatement(Native Method)
/ W/System.err: at android.database.sqlite.SQLiteConnection.acquirePreparedStatement(SQLiteConnection.java:889)
/ W/System.err: at android.database.sqlite.SQLiteConnection.prepare(SQLiteConnection.java:500)
/ W/System.err: at android.database.sqlite.SQLiteSession.prepare(SQLiteSession.java:588)
/ W/System.err: at android.database.sqlite.SQLiteProgram.<init>(SQLiteProgram.java:58)
/ W/System.err: at android.database.sqlite.SQLiteStatement.<init>(SQLiteStatement.java:31)
/ W/System.err: at android.database.sqlite.SQLiteDatabase.executeSql(SQLiteDatabase.java:1677)
W/System.err: at android.database.sqlite.SQLiteDatabase.execSQL(SQLiteDatabase.java:1608)
答案 0 :(得分：1)
这里的单引号'是一个问题。这些生成无效的SQL查询。与其编写原始的SQL查询，不如使用ContentValues或已编译的语句。
String sql = "INSERT INTO " + tableName + " ( name, description ) VALUES ( ?, ? )"; SQLiteStatement stmt = db.compileStatement(sql); stmt.bindString(1, "value"); stmt.execute();
ContentValues values = new ContentValues();
long retvalue = 0;
values.put("_id", id_here);
values.put("text", your_text_here);
db.insert("table",null, values); // Check the docs for the correct parameters here
答案 1 :(得分：1)
我相信您有很多问题。
String[] str = line.split("\\|")在 | 您可以使用SQLiteDatabase 插入便捷方法来简化事务，该方法将代表您构建SQL。
考虑以下工作示例（至少插入有问题的行）：-
数据库助手（最著名的是 addUser 方法）：-
public class DBHelper extends SQLiteOpenHelper {
public static final String DBNAME = "mydb";
public static final int DBVERSION = 1;
public static final String TABLENAME = "tbl_user";
public static final String USER_COL_EMPLOYEENUM = "employee_num";
public static final String USER_COL_USERNAME = "username";
public static final String USER_COL_PASSWORD = "password";
public static final String USER_COL_FIRSTNAME = "firstname";
public static final String USER_COL_LASTNAME = "lastname";
public static final String USER_COL_ADDRESS = "address";
public static final String USER_COL_CONTACT = "contact";
public static final String USER_COL_VAN = "van";
public static final String USER_COL_SALESMANCODE = "salesman_code";
public static final String USER_COL_STATIONCODE = "station_code";
public static final String USER_COL_MACHINEID = "machine_id";
SQLiteDatabase mDB;
public DBHelper(Context context) {
super(context, DBNAME, null, DBVERSION);
mDB = this.getWritableDatabase();
}
@Override
public void onCreate(SQLiteDatabase db) {
String user_crt = "CREATE TABLE If NOT EXISTS " + TABLENAME + "(" +
USER_COL_EMPLOYEENUM + " TEXT PRIMARY KEY," +
USER_COL_USERNAME + " TEXT UNIQUE," +
USER_COL_PASSWORD + " TEXT," +
USER_COL_FIRSTNAME + " TEXT," +
USER_COL_LASTNAME + " TEXT," +
USER_COL_ADDRESS + " TEXT," +
USER_COL_CONTACT + " TEXT," +
USER_COL_VAN + " TEXT," +
USER_COL_SALESMANCODE + " TEXT, " +
USER_COL_STATIONCODE + " TEXT," +
USER_COL_MACHINEID + " TEXT" +
")";
db.execSQL(user_crt);
}
@Override
public void onUpgrade(SQLiteDatabase db, int i, int i1) {
}
public long addUser(String employeeNumber,
String userName,
String password,
String firstname,
String lastname,
String address,
String contact,
String van,
String salesmanCode,
String stationCode,
String machineId) {
ContentValues cv = new ContentValues();
cv.put(USER_COL_EMPLOYEENUM,employeeNumber);
cv.put(USER_COL_USERNAME,userName);
cv.put(USER_COL_PASSWORD,password);
cv.put(USER_COL_FIRSTNAME,firstname);
cv.put(USER_COL_LASTNAME,lastname);
cv.put(USER_COL_ADDRESS,address);
cv.put(USER_COL_CONTACT,contact);
cv.put(USER_COL_VAN,van);
cv.put(USER_COL_SALESMANCODE,salesmanCode);
cv.put(USER_COL_STATIONCODE,stationCode);
cv.put(USER_COL_MACHINEID,machineId);
return mDB.insert(TABLENAME,null,cv);
}
public void logAll() {
Cursor csr = mDB.query(TABLENAME,null,null,null,null,null,null);
while (csr.moveToNext()) {
StringBuilder sb = new StringBuilder(" Row ").append(String.valueOf(csr.getPosition()));
for (int i =0; i < csr.getColumnCount(); i++) {
sb.append("\n\tColumn ").append(csr.getColumnName(i)).append(" has a value of ").append(csr.getString(i));
}
Log.d("TABLEINFO",sb.toString());
}
csr.close();
}
}
这被用于活动中，类似于：-
public class MainActivity extends AppCompatActivity {
DBHelper mDBHlpr;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mDBHlpr = new DBHelper(this);
String currentline = "EMP0003|sample|S@mple|SATO|TEST|destination|00008888|ST0001|EMP0003|East Location|0000001XABC";
String[] values = currentline.split("\\|"); //<<<<<<<<<< SPLT at each |
// Only use if there are the 11 columns
if (values.length == 11) {
mDBHlpr.addUser(
values[0],
values[1],
values[2],
values[3],
values[4],
values[5],
values[6],
values[7],
values[8],
values[9],
values[10]
);
}
mDBHlpr.logAll(); //<<<<<<<<<< Write the data in the table to the log
}
}
运行时将产生（这似乎是您想要的结果）：-
11-06 08:34:29.022 1574-1574/? D/TABLEINFO: Row 0 Column employee_num has a value of EMP0003 Column username has a value of sample Column password has a value of S@mple Column firstname has a value of SATO Column lastname has a value of TEST Column address has a value of destination Column contact has a value of 00008888 Column van has a value of ST0001 Column salesman_code has a value of EMP0003 Column station_code has a value of East Location Column machine_id has a value of 0000001XABC
如您所见，构建SQL无需花费时间，它是为您构建的。
您可以通过使用（在根据列名包括 addUser 方法或同等方法之后，对上述内容进行调整（强烈建议您对列名采用常量而不是硬性表示）编码它们））：-
while ((line = buffer.readLine()) !=null ) {
String[] values = line.split("\\|"); //<<<<<<<<<< SPLIT at each |
// Only use if there are the 11 columns
if (values.length == 11) {
mydb.addUser(
values[0],
values[1],
values[2],
values[3],
values[4],
values[5],
values[6],
values[7],
values[8],
values[9],
values[10]
);
}
}