我开始使用Android中的SQLite和数据库,我刚刚发现了这个问题.我已经阅读了很多类似的问题,但我还没有找到解决方案.
这是我得到的错误:
E/AndroidRuntime(529):引起:android.database.sqlite.SQLiteException:没有这样的表:ligas_bd :,编译时:SELECT*FROM ligas_bd
这是我的代码.
DBHelper myDbHelper = new DBHelper(this);
myDbHelper = new DBHelper(this);
try {
myDbHelper.createDataBase();
} catch (IOException ioe) {
throw new Error("Unable to create database");
}
try {
myDbHelper.open();
SQLiteDatabase db = null;
db = myDbHelper.getWritableDatabase();
String[] args = new String[] {""};
Cursor c = db.rawQuery(" SELECT * FROM ligas_bd", args); <---- Error in this line
if (c.moveToFirst()) {
do {
String cod = c.getString(0);
String nombre = c.getString(1);
String flag = c.getString(0);
String cod_url = …Run Code Online (Sandbox Code Playgroud) 我正在将Spring Web项目转换为Maven项目,我收到此错误:
java.lang.NoSuchMethodError:org.jboss.logging.Logger.getMessageLogger(Ljava/lang/Class; Ljava/lang/String;)Ljava/lang/Object;
除了这个错误,似乎我有很多依赖关系的问题,我试图修复它们但我是Maven的一个完整的新手:
- oct 30,2014 3:53:30 PM org.apache.catalina.loader.WebappClassLoader validateJarFile>
- INFO:validateJarFile(C:\ Users\a\workspace.metadata.plugins\org.eclipse.wst.server.core\tmp0\wtpwebapps\revista2_local\WEB-INF\lib\el-api-2.2.jar)
- 罐子没装.请参阅Servlet规范2.3,第9.7.2节.违规类:javax/el/Expression.class>
- oct 30,2014 3:53:30 PM org.apache.catalina.loader.WebappClassLoader validateJarFile>
- INFO:validateJarFile(C:\ Users\a\workspace.metadata.plugins\org.eclipse.wst.server.core\tmp0\wtpwebapps\revista2_local\WEB-INF\lib\jboss-el-api_2.2_spec-1.0.0 .Final.jar)
- 罐子没装.请参阅Servlet规范2.3,第9.7.2节.违规类:javax/el/Expression.class>
- oct 30,2014 3:53:30 PM org.apache.catalina.loader.WebappClassLoader validateJarFile
- INFO:validateJarFile(C:\ Users\a\workspace.metadata.plugins\org.eclipse.wst.server.core\tmp0\wtpwebapps\revista2_local\WEB-INF\lib\jboss-javaee-5.0.0.GA.jar )
- 罐子没装.请参阅Servlet规范2.3,第9.7.2节.违规类:javax/servlet/Servlet.class>
- oct 30,2014 3:53:30 PM org.apache.catalina.loader.WebappClassLoader validateJarFile
- INFO:validateJarFile(C:\ Users\a\workspace.metadata.plugins\org.eclipse.wst.server.core\tmp0\wtpwebapps\revista2_local\WEB-INF\lib\jboss-servlet-api_3.0_spec-1.0.0 .Final.jar)
- 罐子没装.请参阅Servlet规范2.3,第9.7.2节.违规类:javax/servlet/Servlet.class
- oct 30,2014 3:53:30 PM org.apache.catalina.loader.WebappClassLoader validateJarFile
- INFO:validateJarFile(C:\ Users\a\workspace.metadata.plugins\org.eclipse.wst.server.core\tmp0\wtpwebapps\revista2_local\WEB-INF\lib\jsp-api-2.1.jar)
- 罐子没装.请参阅Servlet规范2.3,第9.7.2节.违规类:javax/el/Expression.class
- oct 30,2014 3:53:30 PM org.apache.catalina.loader.WebappClassLoader validateJarFile
- INFO:validateJarFile(C:\ Users\a\workspace.metadata.plugins\org.eclipse.wst.server.core\tmp0\wtpwebapps\revista2_local\WEB-INF\lib\servlet-api-2.5.jar)
- 罐子没装.请参阅Servlet规范2.3,第9.7.2节.违规类:javax/servlet/Servlet.class
(阅读完整输出以获取更多详细信息)
我正在使用Tomcat 7.0.
希望我正确地问这个问题.
我有这门课:
class ListUtilities
{
private List<string> _datalist;
public ListUtilities(List<string> datalist)
{
_datalist = datalist;
}
//Method to calculate age from a date
private int getAge(string bdaystr)
{
DateTime today = DateTime.Today;
DateTime bday = new DateTime(Convert.ToInt32(bdaystr.Substring(0, 4)), Convert.ToInt32(bdaystr.Substring(4, 2)), Convert.ToInt32(bdaystr.Substring(6, 2)));
int age = today.Year - bday.Year;
if (bday > today.AddYears(-age)) age--;
return age;
}
//Method to print the data List
public void printDataList()
{
for (int i = 0; i < _datalist.Count; i++)
{
Console.WriteLine(_datalist.ElementAt(i));
}
}
//Method …Run Code Online (Sandbox Code Playgroud)