Question

有时因任何原因语句无法正确提交DB。例如，如果连接已关闭，则statement.execute（）将失败。有谁知道如何记录语句，以便识别和记录哪些查询字符串未能成功提交？

Answer 1

一种解决方案可以是IBM使用LoggableStatement类：

文件地址： https://www.ibm.com/developerworks/library/j-loggable/index.html

Connection connection = DriverManager.getConnection(url,dbUserName,dbPassword);

StringBuffer stringBuffer = new StringBuffer("SELECT * FROM TABLEx");
LoggableStatement statement = new LoggableStatement(connection,stringBuffer.toString());

try {
    statement.execute();
} catch (Exception ex) {
    // write QueryString to a file!
    BufferedWriter out = new BufferedWriter(new OutputStreamWriter(new FileOutputStream("fileName", true), "cp1256"));
    out.write(statement.getQueryString());
    out.close();
} finally {
    if (statement != null && !statement.isClosed()) {
        statement.close();
    }
}

如果SQL语句无法提交，如何记录查询字符串？

1 个答案: