通过select with where子句锁定的Java JDBC SQLite数据库

问题描述

我正在调用此方法：

1=string=K
2=string=O
3=string=Y
4=string=A
5=string=A
6=string=N
7=string=I
8=string=S
9=string=Q
10=string=A
11=string=T
12=string=S
13=string=I

一切正常执行，但似乎我的数据库仍然处于锁定状态，没有明显的原因。

另一方面，如果我要用此方法替换数据库，则在执行数据库之后就可以了：

ArrayList<String> selectFilteredJump(String owner,String fromDate,String toDate,String env) {
    ArrayList<String> a = new ArrayList<>();
    Connection c;
    Statement stmt;

    StringBuilder whereClause = new StringBuilder("WHERE a.Date BETWEEN '"+fromDate+ "' and '" + toDate+"'");
    if (!env.equals(constants.EMPTY) ) {
        whereClause.append(" and a.Environment = '").append(env).append("'");
    }

    if (!owner.equals(constants.EMPTY) ) {
        whereClause.append(" and a.UserId = '").append(owner).append("'");
    }

    String sql = "SELECT a.TicketID,a.Subject,a.UserID,a.Date,a.Solution,a.Comments," +
                 "a.Environment,(SELECT UserName FROM Users WHERE UserID = a.UserID) AS UserName FROM Tickets a " +
                 whereClause + " order by 4 asc;";
    System.out.println(sql);
    try {
        Class.forName("org.sqlite.JDBC");
        c = DriverManager.getConnection("jdbc:sqlite:" + this.dbPath + this.dbName) ;
        c.setAutoCommit(false);
        stmt = c.createStatement();
        ResultSet rs = stmt.executeQuery(sql);
        while (rs.next()) {
            a.add(rs.getString("TicketID"));
            a.add(rs.getString("Subject"));
            a.add(rs.getString("UserID"));
            a.add(rs.getString("Date"));
            a.add(rs.getString("Solution"));
            a.add(rs.getString("Comments"));
            a.add(rs.getString("Environment"));
            a.add(rs.getString("UserName"));
        }
        rs.close();
        stmt.close();
        c.close();
    }
    catch (Exception e) {
        System.err.println(e.getClass().getName() + ": " + e.getMessage());
    }
    return a;
}

我也尝试过使用特定的配置打开连接（像这样）：

    ArrayList<String> selectAllJump() {
    if (constants.DEBUG_MODE) System.out.println("selectAllJump");
    ArrayList<String> a = new ArrayList<>();
    Connection c;
    Statement stmt;
    try {
        Class.forName("org.sqlite.JDBC");
        c = DriverManager.getConnection("jdbc:sqlite:" + this.dbPath + this.dbName);
        c.setAutoCommit(false);
        stmt = c.createStatement();
        ResultSet rs = stmt.executeQuery("SELECT a.TicketID," +
                "a.Environment,(SELECT UserName FROM Users WHERE UserID = a.UserID) AS UserName FROM Tickets a " +
                "order by 4 asc;");
        while (rs.next()) {
            a.add(rs.getString("TicketID"));
            a.add(rs.getString("Subject"));
            a.add(rs.getString("UserID"));
            a.add(rs.getString("Date"));
            a.add(rs.getString("Solution"));
            a.add(rs.getString("Comments"));
            a.add(rs.getString("Environment"));
            a.add(rs.getString("UserName"));
        }
        rs.close();
        stmt.close();
        c.close();
    }
    catch (Exception e) {
        System.err.println(e.getClass().getName() + ": " + e.getMessage());
    }
    return a;
}

，仍然是相同的错误：

org.sqlite.SQLiteException：[SQLITE_BUSY]数据库文件已锁定（数据库已锁定）

欢迎任何想法。

谢谢。

解决方法

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