JDBC如何預渲染'\。 somesqlfile.sql「？

Question

你如何使用jdbc預製這種類型的動作？

String x = ("\\. /home/user/Desktop/dbfile.sql"); 

Class.forName(Database.JDBC_DRIVER); 
Connection conn = (Connection) DriverManager.getConnection(
    Database.DB_URL + "localhost" + "/" + "mydatabase", "root", ""); 
Statement stmt = (Statement) conn.createStatement(); 

stmt.execute(x); 

結果：異常線程 「main」 com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException：您的SQL語法錯誤;檢查與你的MySQL服務器版本相對應的手冊，在''附近'使用正確的 語法'。

我已經試過這

public static void main(String[] args) throws Exception 
    { 

    String x = readFileAsString("/home/user/Desktop/myDB.sql"); 

    Class.forName(Database.JDBC_DRIVER); 
    Connection conn = (Connection) DriverManager.getConnection(
     Database.DB_URL + "localhost" + "/" + "mydb", "root", ""); 
    Statement stmt = (Statement) conn.createStatement(); 

    System.out.println(x); 
    stmt.execute(x); 

    } 

    private static String readFileAsString(String filePath) throws Exception 
    { 
    byte[] buffer = new byte[(int) new File(filePath).length()]; 
    BufferedInputStream f = null; 
    try 
    { 
     f = new BufferedInputStream(new FileInputStream(filePath)); 
     f.read(buffer); 
    } 
    finally 
    { 
     if (f != null) 
     try 
     { 
      f.close(); 
     } 
     catch (IOException ignored) 
     { 
     } 
    } 
    return new String(buffer); 
    } 

結果

Exception in thread "main" com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'SET @OLD_CHARACTER_SET_RESULTS=@@CHARACTER_SET_RESULTS */; 

我的文件看起來像

-- MySQL dump 10.13 Distrib 5.5.21, for Linux (x86_64) 
-- 
-- Host: localhost Database: DOG 
-- ------------------------------------------------------ 
-- Server version 5.5.21 

/*!40101 SET @OLD_CHARACTER_SET_CLIENT=@@CHARACTER_SET_CLIENT */; 
/*!40101 SET @OLD_CHARACTER_SET_RESULTS=@@CHARACTER_SET_RESULTS */; 
/*!40101 SET @OLD_COLLATION_CONNECTION=@@COLLATION_CONNECTION */; 
/*!40101 SET NAMES utf8 */; 
/*!40103 SET @OLD_TIME_ZONE=@@TIME_ZONE */; 
/*!40103 SET TIME_ZONE='+00:00' */; 
/*!40014 SET @OLD_UNIQUE_CHECKS=@@UNIQUE_CHECKS, UNIQUE_CHECKS=0 */; 
/*!40014 SET @OLD_FOREIGN_KEY_CHECKS=@@FOREIGN_KEY_CHECKS, FOREIGN_KEY_CHECKS=0 */; 
/*!40101 SET @OLD_SQL_MODE=@@SQL_MODE, SQL_MODE='NO_AUTO_VALUE_ON_ZERO' */; 
/*!40111 SET @OLD_SQL_NOTES=@@SQL_NOTES, SQL_NOTES=0 */; 

-- 
-- Table structure for table `DOG` 
-- 

DROP TABLE IF EXISTS `DOG`; 
/*!40101 SET @saved_cs_client  = @@character_set_client */; 
/*!40101 SET character_set_client = utf8 */; 
CREATE TABLE `DOG` (
    `DOG_ID` mediumint(9) NOT NULL, 
    `OWNER_ID` mediumint(9) NOT NULL, 
    PRIMARY KEY (`DOG_ID`,`OWNER_ID`), 
    KEY `CHANNEL_FK1` (`OWN_ID`) 
) ENGINE=MyISAM DEFAULT CHARSET=latin1; 
/*!40101 SET character_set_client = @saved_cs_client */; 

Answer 1

你不能這樣做。您將需要自己打開dbfile.sql，並通過JDBC API運行所有行。

只要你有ONE SQL語句PER LINE這可能工作：

Class.forName(Database.JDBC_DRIVER); 
Connection conn = (Connection) DriverManager.getConnection(
    Database.DB_URL + "localhost" + "/" + "mydatabase", "root", ""); 
Statement stmt = (Statement) conn.createStatement(); 
BufferedReader reader = new BufferedReader(new FileReader ("/home/user/Desktop/dbfile.sql")); 
String line = null; 
while((line = reader.readLine()) != null) { 
    stmt.executeUpdate(line);  
} 
stmt.close(); 
conn.close(); 

Answer 2

我會做的是看看打開文件時，讀這一切變成一個字符串，然後執行。如果您遇到此問題，快速的Google搜索應該會對您有所幫助。