while(rs.next()){
String filename=rs.getString("filename");
String url="E:/StuFiles/" + filename;
File f=new File(url);
rs.close();
flag=f.delete();
}你已经把rs给close了,怎么可能循环得下去啊???改成 : while(rs.next()){
String filename=rs.getString("filename");
String url="E:/StuFiles/" + filename;
File f=new File(url);
flag=f.delete();
}
rs.close();
stmt.close();
coon.close();
String filename=rs.getString("filename");
String url="E:/StuFiles/" + filename;
File f=new File(url);
rs.close();
flag=f.delete();
}你已经把rs给close了,怎么可能循环得下去啊???改成 : while(rs.next()){
String filename=rs.getString("filename");
String url="E:/StuFiles/" + filename;
File f=new File(url);
flag=f.delete();
}
rs.close();
stmt.close();
coon.close();
解决方案 »
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