JDBC和MS-Access空指針

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JDBC空指針錯誤。同時訪問數據庫。這是我正在執行的查詢。JDBC和MS-Access空指針

"INSERT INTO paritosh (customer, contactPerson, mobileNo, phoneNo, emailId, chairman, instituteName, totalEmployees, totalFaculty, totalStudents, totalClassroom, address, state, revenue, clientRate, acceptedRate, valuePerCard, rating, finderName, finderFee, comments) VALUES ('kinley', 'adfa' , '232131' , '2323' , '@gmail' , 'adfadf' , 'zxc' ,100,11,1000,30, 'dfdfa' , 'Delhi' , 66000,60000,60000,600, 'Hot' , 'tyu' , 8, 'dfadfadfasdf');"

如果我執行的代碼，查詢中運行良好的訪問SQL查詢.....

請幫

的JDBC代碼如下：

String insertq="INSERT INTO paritosh (customer, contactPerson, mobileNo, phoneNo, emailId, chairman, instituteName, totalEmployees, totalFaculty, totalStudents, totalClassroom, address, state, revenue, clientRate, acceptedRate, valuePerCard, rating, finderName, finderFee, comments)"; 

String query=" VALUES ('"+customer+"', '"+contact+"' , '"+mobile+"' , '"+phone+"' , '"+email+"' , '"+chairman+"' , '"+institute+"' ,"+totalEmployees+","+totalFaculty+","+totalStudents+","+classroom+", '"+address+"' , '"+state+"' , "+revenue+","+clientRate+","+accepRate+","+valPercard+", '"+Rating+"' , '"+finderName+"' , "+finderFee+", '"+comment+"');"; 
    String build=insertq+query; 

String query2="INSERT INTO paritosh (customer, contactPerson, mobileNo, phoneNo, emailId, chairman, instituteName, totalEmployees, totalFaculty, totalStudents, totalClassroom, address, state, revenue, clientRate, acceptedRate, valuePerCard, rating, finderName, finderFee, comments) VALUES ('virappan', 'dussal' , '4269887' , '12334567' , '[email protected]' , 'kumar' , 'RMIT' ,300,120,3000,150, 'adfad' , 'Delhi' , 400000,380000,390000,1500, 'Hot' , 'vineet' , 9, 'afddf');"; 

try{ 
    s.execute(build); 
} 
catch(SQLException se) 
{ 
    System.out.println("SQL eception"); 
} 
catch(Exception e) 
{ 
    System.out.println(e); 
    System.out.println(" error after running the query"); 
}

來源

2012-07-24 chetan

你能提供完整的堆棧跟蹤嗎？另外，你是否確定's'不是null？ – Sujay 2012-07-24 15:11:04

看着你的代碼，我建議你考慮使用PreparedStatement而不是你正在做的方式。
確保在調用方法之前設置了連接。請注意，這僅基於您提供的內容。如果您希望我們查看您的整體代碼並幫助您，請考慮發佈SSCCE。

來源

2012-07-24 15:15:52 Sujay

JDBC和MS-Access空指針

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