String sql1=”select * from user where userName=”””+userName+””””; |
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3分
#1 |
把最后生成的sql语句在数据库里执行下看看
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#2 |
try{
Connection con=null; Statement stmt=null; ResultSet rs=null; Class.forName(“com.mysql.jdbc.Driver”); String url=”jdbc:mysql://localhost:3306/person?useUnicode=true&characterEncoding=gbk”; con=DriverManager.getConnection(url,”root”,”123456″); stmt=con.createStatement(); String sql1=”select * from user where userName=”””+userName+””””; rs=stmt.executeQuery(sql1); rs.last(); int k; k=rs.getRow(); if(k>0){ wrong3(); response.sendRedirect(“http://localhost:8080/PIMS/login.jsp”); }else{ String sql2=”insert into user” +”(userName,password,name,sex,birth,nation,edu,work,phone,place,email)”+”values(” +””””+userName+””””+”,”+””””+password1+””””+”,”+””””+name+””””+”,”+””””+sex+””””+”,”+””””+birth+””””+”,” +””””+nation+””””+”,”+””””+edu+””””+”,”+””””+work+””””+”,”+””””+phone+””””+”,”+””””+place+””””+”,”+””””+email+””””+”)”; stmt.executeUpdate(sql2); } rs.close(); stmt.close(); con.close(); right(); response.sendRedirect(“http://http://localhost:8080/PIMS/login.jsp”); }catch(Exception e){ e.printStackTrace(); } |
3分
#3 |
有 userName 列 吗
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#4 |
这个肯定有啊
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6分
#5 |
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#6 |
Unknown column “”username”” in “”where clause””
楼上小哥,我全改了,结果。并没有什么。 |
8分
#7 |
String sql1=”select * from user where userName=”””+userName+””””;
该为String sql1=”select * from user where userName=”+userName; |
#8 |
String sql1=”select * from user where userName=”””+userName+””””;
改为String sql1=”select * from user where userName=”+””””+userName””””; |
#9 |
经过两天的检查,终于在页面的框架里面找到了数据库insert的一段代码错误,结贴了,谢谢各位高手
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