使用JDBC将数据插入MySQL

我试图使用JDBC将数据插入MySQL数据库。我的问题是，在第二行数据从第一行开始！。 The picture explains better than me。这是我的代码的一个例子。我想从第一列存储下来。使用JDBC将数据插入MySQL

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

    Connection conn = null; 
    Statement stmt = null; 
    try{ 
     //STEP 2: Register JDBC driver 
     Class.forName("com.mysql.jdbc.Driver"); 

     //STEP 3: Open a connection 
     System.out.println("Connecting to a selected database..."); 
     conn = DriverManager.getConnection("jdbc:mysql://83.212.124.175:3306/zadmin_java?useUnicode=yes&characterEncoding=UTF-8","username", "pass.."); 
     System.out.println("Connected database successfully..."); 

     //STEP 4: Execute a query 
     System.out.println("Inserting records into the table..."); 
     stmt = (Statement) conn.createStatement(); 

     for (int j=1; j<=1;j++){ 
      Document mobilePhones = Jsoup.connect("http://www.skroutz.gr/c/40/kinhta-thlefwna.html?order_dir=asc&page=" + j).userAgent("Mozilla").get(); 
      //get elements 
      Elements phoneUrls = mobilePhones.select("div[class=details] a "); 
      Elements phoneName = mobilePhones.select("div[class=details]"); 
      Elements phonePrice = mobilePhones.select("p[class=price]"); 
      Elements phoneRating = mobilePhones.select("div[class=rating-wrapper] span"); 
      Elements phoneSpecs = mobilePhones.select("p[class=specs]"); 

      //insert all urls to db 
      for(int i = 1; i<phoneUrls.size();i++){ 

       String urls = phoneUrls.get(i).absUrl("href"); 
       String sql = "INSERT INTO skrouzt(url) " + 
        "VALUES ('"+urls+"')"; 
       stmt.executeUpdate(sql); 

      } 


      //insert all names to db 
      for(int i =1; i<phoneName.size();i++){ 
       String names = phoneName.get(i).text(); 
       String insert = "INSERT INTO skrouzt(name) " + 
        "VALUES ('"+names+"')"; 

       stmt.executeUpdate(insert); 

      }    
     } 


     System.out.println("Inserted records into the table..."); 

    }catch(SQLException se){ 
     //Handle errors for JDBC 
     se.printStackTrace(); 
    }catch(Exception e){ 
     //Handle errors for Class.forName 
     e.printStackTrace(); 
    }finally{ 
     //finally block used to close resources 
     try{ 
      if(stmt!=null) 
      conn.close(); 
     }catch(SQLException se){ 
     }// do nothing 
     try{ 
      if(conn!=null) 
      conn.close(); 
     }catch(SQLException se){ 
      se.printStackTrace(); 
     }//end finally try 
    }//end try 
    System.out.println("Goodbye!"); 
}//end of the main method

来源

2015-04-15 dimit

同时插入使用一个单独的语句 – MadProgrammer

只能每行使用INSERT一次，你要添加或更新一些使用UPDATE下一次的名称和网址。检查这里http://stackoverflow.com/questions/2002500/what-are-differences-between-insert-and-update-in-mysql –

是的，但名称行是空的。我必须插入数据没有更新！ – dimit

用这样的一个替换2个循环。

 int rowCount=Math.max(phoneUrls.size(),phoneName.size()); 
     for(int i = 1; i<rowCount;i++){ 

      String urls = (i<phoneUrls.size()) ? "'"+phoneUrls.get(i).absUrl("href")+"'" : "NULL"; 
      String names = (i<phoneName.size()) ? "'"+phoneName.get(i).text()+"'" : "NULL"; 
      String sql = "INSERT INTO skrouzt(url, name) " + 
       "VALUES ("+urls+","+names+")"; 
      stmt.executeUpdate(sql); 

     }

来源

2015-04-15 06:13:19 StanislavL

谢谢，工作正常...我不能投票，因为我没有足够的声誉 – dimit

使用JDBC将数据插入MySQL

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