Secure Priv Option Mysql是什么？

Question

我想了解安全priv选项的含义是什么？我尝试在此论坛上查找，但找不到任何内容。有人可以解释吗？

我尝试导入一个csv文件。现在已经完成了，但是需要了解我刚刚做了什么。

Answer 1

在MySQL document 中引用

  

此变量用于限制数据导入和导出的效果   操作，例如package com.pdftables.examples; import java.io.File; import java.util.Arrays; import java.util.List; import org.apache.commons.io.FileUtils; import org.apache.http.HttpEntity; import org.apache.http.client.config.CookieSpecs; import org.apache.http.client.config.RequestConfig; import org.apache.http.client.methods.CloseableHttpResponse; import org.apache.http.client.methods.HttpPost; import org.apache.http.entity.mime.MultipartEntityBuilder; import org.apache.http.entity.mime.content.FileBody; import org.apache.http.impl.client.CloseableHttpClient; import org.apache.http.impl.client.HttpClients; public class ConvertToFile { private static List<String> formats = Arrays.asList(new String[] { "csv", "xml", "xlsx-single", "xlsx-multiple" }); public static void main(String[] args) throws Exception { if (args.length != 3) { System.out.println("Command line: <API_KEY> <FORMAT> <PDF filename>"); System.exit(1); } final String apiKey = args[0]; final String format = args[1].toLowerCase(); final String pdfFilename = args[2]; if (!formats.contains(format)) { System.out.println("Invalid output format: \"" + format + "\""); System.exit(1); } // Avoid cookie warning with default cookie configuration RequestConfig globalConfig = RequestConfig.custom().setCookieSpec(CookieSpecs.STANDARD).build(); File inputFile = new File(pdfFilename); if (!inputFile.canRead()) { System.out.println("Can't read input PDF file: \"" + pdfFilename + "\""); System.exit(1); } try (CloseableHttpClient httpclient = HttpClients.custom().setDefaultRequestConfig(globalConfig).build()) { HttpPost httppost = new HttpPost("https://pdftables.com/api?format=" + format + "&key=" + apiKey); FileBody fileBody = new FileBody(inputFile); HttpEntity requestBody = MultipartEntityBuilder.create().addPart("f", fileBody).build(); httppost.setEntity(requestBody); System.out.println("Sending request"); try (CloseableHttpResponse response = httpclient.execute(httppost)) { if (response.getStatusLine().getStatusCode() != 200) { System.out.println(response.getStatusLine()); System.exit(1); } HttpEntity resEntity = response.getEntity(); if (resEntity != null) { final String outputFilename = getOutputFilename(pdfFilename, format.replaceFirst("-.*$", "")); System.out.println("Writing output to " + outputFilename); final File outputFile = new File(outputFilename); FileUtils.copyToFile(resEntity.getContent(), outputFile); } else { System.out.println("Error: file missing from response"); System.exit(1); } } } } private static String getOutputFilename(String pdfFilename, String suffix) { if (pdfFilename.length() >= 5 && pdfFilename.toLowerCase().endsWith(".pdf")) { return pdfFilename.substring(0, pdfFilename.length() - 4) + "." + suffix; } else { return pdfFilename + "." + suffix; } } } 和LOAD DATA语句以及SELECT ... INTO OUTFILE函数执行的操作。这些操作   只有具有FILE特权的用户才被允许。

     

LOAD_FILE()可以设置如下：

     

如果为空，则该变量无效。

     

如果设置为目录名，则服务器将限制导入和导出   操作仅适用于该目录中的文件。目录   必须存在；服务器将不会创建它。

     

如果设置为secure_file_priv，则服务器将禁用导入和导出操作。这个   从MySQL 5.7.6开始允许该值。