一个处理数据库异常的类，按照错误码弹出提示信息-数据库

public class MyErrorContext
{
public static class MyError
{
int errno;
String szErrorDesc;
public MyError(int errno, String errorDesc)
{
this.errno = errno;
this.szErrorDesc = errorDesc;
}
public int getErrorNo()
{
return errno;
}
public String getErrorDesc()
{
return szErrorDesc;
}
}
public static final int DB_ER_CANT_create_TABLE = 1005; //创建表失败
public static final int DB_ER_CANT_create_DB = 1006; //创建数据库失败
public static final int DB_ER_DB_create_EXISTS = 1007; //数据库已存在，创建数据库失败
public static final int DB_ER_DB_drop_EXISTS = 1008; //数据库不存在，删除数据库失败
public static final int DB_ER_DB_drop_delete = 1009; //不能删除数据库文件导致删除数据库失败
public static final int DB_ER_DB_drop_RMDIR = 1010; //不能删除数据目录导致删除数据库失败
public static final int DB_ER_CANT_delete_FILE = 1011; //删除数据库文件失败
public static final int DB_ER_CANT_FIND_SYSTEM_REC = 1012; //不能读取系统表中的记录
public static final int DB_ER_CHECKREAD = 1020; //记录已被其他用户修改
public static final int DB_ER_DISK_FULL = 1021; //硬盘剩余空间不足，请加大硬盘可用空间
public static final int DB_ER_DUP_KEY = 1022; //关键字重复，更改记录失败
public static final int DB_ER_ERROR_ON_CLOSE = 1023; //关闭时发生错误
public static final int DB_ER_ERROR_ON_READ = 1024; //读文件错误
public static final int DB_ER_ERROR_ON_rename = 1025; //更改名字时发生错误
public static final int DB_ER_ERROR_ON_WRITE = 1026; //写文件错误
public static final int DB_ER_KEY_NOT_FOUND = 1032; //记录不存在
public static final int DB_ER_OPEN_AS_READONLY = 1036; //数据表是只读的，不能对它进行修改
public static final int DB_ER_OUTOFMEMORY = 1037; //系统内存不足，请重启数据库或重启服务器
public static final int DB_ER_OUT_OF_SORTMEMORY = 1038; //用于排序的内存不足，请增大排序缓冲区
public static final int DB_ER_CON_COUNT_ERROR = 1040; //已到达数据库的最大连接数，请加大数据库可用连接数
public static final int DB_ER_OUT_OF_RESOURCES = 1041; //系统内存不足
public static final int DB_ER_BAD_HOST_ERROR = 1042; //无效的主机名
public static final int DB_ER_HANDSHAKE_ERROR = 1043; //无效连接
public static final int DB_ER_DBACCESS_DENIED_ERROR = 1044; //当前用户没有访问数据库的权限
public static final int DB_ER_ACCESS_DENIED_ERROR = 1045; //不能连接数据库，用户名或密码错误
public static final int DB_ER_BAD_NULL_ERROR = 1048; //字段不能为空
public static final int DB_ER_BAD_DB_ERROR = 1049; //数据库不存在
public static final int DB_ER_TABLE_EXISTS_ERROR = 1050; //数据表已存在
public static final int DB_ER_BAD_TABLE_ERROR = 1051; //数据表不存在
public static final int DB_ER_BAD_FIELD_ERROR = 1054; //字段不存在
public static final int DB_ER_EMPTY_QUERY = 1065; //无效的SQL语句，SQL语句为空
public static final int DB_ER_IPSOCK_ERROR = 1081; //不能建立Socket连接
public static final int DB_ER_RECORD_FILE_FULL = 1114; //数据表已满，不能容纳任何记录
public static final int DB_ER_TOO_MANY_TABLES = 1116; //打开的数据表太多
public static final int DB_ER_HOST_IS_BLOCKED = 1129; //数据库出现异常，请重启数据库
public static final int DB_ER_HOST_NOT_PRIVILEGED = 1130; //连接数据库失败，没有连接数据库的权限
public static final int DB_ER_PASSWORD_NO_MATCH = 1133; //数据库用户不存在
public static final int DB_ER_NONEXISTING_GRANT = 1141; //当前用户无权访问数据库
public static final int DB_ER_TABLEACCESS_DENIED_ERROR = 1142; //当前用户无权访问数据表
public static final int DB_ER_COLUMNACCESS_DENIED_ERROR = 1143; //当前用户无权访问数据表中的字段
public static final int DB_ER_NO_SUCH_TABLE = 1146; //数据表不存在
public static final int DB_ER_NONEXISTING_TABLE_GRANT = 1147; //未定义用户对数据表的访问权限
public static final int DB_ER_SYNTAX_ERROR = 1149; //SQL语句语法错误
public static final int DB_ER_NET_READ_ERROR = 1158; //网络错误，出现读错误，请检查网络连接状况
public static final int DB_ER_NET_READ_INTERRUPTED = 1159; //网络错误，读超时，请检查网络连接状况
public static final int DB_ER_NET_ERROR_ON_WRITE = 1160; //网络错误，出现写错误，请检查网络连接状况
public static final int DB_ER_NET_WRITE_INTERRUPTED = 1161; //网络错误，写超时，请检查网络连接状况
public static final int DB_ER_DUP_ENTRY = 1062; //字段值重复，入库失败
public static final int DB_ER_DUP_UNIQUE = 1169; //字段值重复，更新记录失败
public static final int DB_ER_CHECK_NO_SUCH_TABLE = 1177; //打开数据表失败
public static final int DB_ER_ERROR_DURING_COMMIT = 1180; //提交事务失败
public static final int DB_ER_ERROR_DURING_ROLLBACK = 1181; //回滚事务失败
public static final int DB_ER_TOO_MANY_USER_CONNECTIONS = 1203; //当前用户和数据库建立的连接已到达数据库的最大连接数，请增大可用的数据库连接数或重启数据库
public static final int DB_ER_LOCK_WAIT_TIMEOUT = 1205; //加锁超时
public static final int DB_ER_NO_PERMISSION_TO_create_USER = 1211; //当前用户没有创建用户的权限
public static final int DB_ER_NO_REFERENCED_ROW = 1216; //外键约束检查失败，更新子表记录失败
public static final int DB_ER_ROW_IS_REFERENCED = 1217; //外键约束检查失败，删除或修改主表记录失败
public static final int DB_ER_USER_LIMIT_REACHED = 1226; //当前用户使用的资源已超过所允许的资源，请重启数据库或重启服务器
public static final int DB_ER_SPECIFIC_ACCESS_DENIED_ERROR = 1227; //权限不足，您无权进行此操作
public static final int DB_ER_NOT_SUPPORTED_YET = 1235; //MySQL版本过低，不具有本功能
private static final MyError[] errormap =
{
new MyError(DB_ER_CANT_create_TABLE ,"创建表失败"),
new MyError(DB_ER_CANT_create_DB ,"创建数据库失败"),
new MyError(DB_ER_DB_create_EXISTS ,"数据库已存在，创建数据库失败"),
new MyError(DB_ER_DB_drop_EXISTS ,"数据库不存在，删除数据库失败"),
new MyError(DB_ER_DB_drop_delete ,"不能删除数据库文件导致删除数据库失败"),
new MyError(DB_ER_DB_drop_RMDIR ,"不能删除数据目录导致删除数据库失败"),
new MyError(DB_ER_CANT_delete_FILE ,"删除数据库文件失败"),
new MyError(DB_ER_CANT_FIND_SYSTEM_REC ,"不能读取系统表中的记录"),
new MyError(DB_ER_CHECKREAD ,"记录已被其他用户修改"),
new MyError(DB_ER_DISK_FULL ,"硬盘剩余空间不足，请加大硬盘可用空间"),
new MyError(DB_ER_DUP_KEY ,"关键字重复，更改记录失败"),
new MyError(DB_ER_ERROR_ON_CLOSE ,"关闭时发生错误"),
new MyError(DB_ER_ERROR_ON_READ ,"读文件错误"),
new MyError(DB_ER_ERROR_ON_rename ,"更改名字时发生错误"),
new MyError(DB_ER_ERROR_ON_WRITE ,"写文件错误"),
new MyError(DB_ER_KEY_NOT_FOUND ,"记录不存在"),
new MyError(DB_ER_OPEN_AS_READONLY ,"数据表是只读的，不能对它进行修改"),
new MyError(DB_ER_OUTOFMEMORY ,"系统内存不足，请重启数据库或重启服务器"),
new MyError(DB_ER_OUT_OF_SORTMEMORY ,"用于排序的内存不足，请增大排序缓冲区"),
new MyError(DB_ER_CON_COUNT_ERROR ,"已到达数据库的最大连接数，请加大数据库可用连接数"),
new MyError(DB_ER_OUT_OF_RESOURCES ,"系统内存不足"),
new MyError(DB_ER_BAD_HOST_ERROR ,"无效的主机名"),
new MyError(DB_ER_HANDSHAKE_ERROR ,"无效连接"),
new MyError(DB_ER_DBACCESS_DENIED_ERROR ,"当前用户没有访问数据库的权限"),
new MyError(DB_ER_ACCESS_DENIED_ERROR ,"不能连接数据库，用户名或密码错误"),
new MyError(DB_ER_BAD_NULL_ERROR ,"字段不能为空"),
new MyError(DB_ER_BAD_DB_ERROR ,"数据库不存在"),
new MyError(DB_ER_TABLE_EXISTS_ERROR ,"数据表已存在"),
new MyError(DB_ER_BAD_TABLE_ERROR ,"数据表不存在"),
new MyError(DB_ER_BAD_FIELD_ERROR ,"字段不存在"),
new MyError(DB_ER_EMPTY_QUERY ,"无效的SQL语句，SQL语句为空"),
new MyError(DB_ER_IPSOCK_ERROR ,"不能建立Socket连接"),
new MyError(DB_ER_RECORD_FILE_FULL ,"数据表已满，不能容纳任何记录"),
new MyError(DB_ER_TOO_MANY_TABLES ,"打开的数据表太多"),
new MyError(DB_ER_HOST_IS_BLOCKED ,"数据库出现异常，请重启数据库"),
new MyError(DB_ER_HOST_NOT_PRIVILEGED ,"连接数据库失败，没有连接数据库的权限"),
new MyError(DB_ER_PASSWORD_NO_MATCH ,"数据库用户不存在"),
new MyError(DB_ER_NONEXISTING_GRANT ,"当前用户无权访问数据库"),
new MyError(DB_ER_TABLEACCESS_DENIED_ERROR ,"当前用户无权访问数据表"),
new MyError(DB_ER_COLUMNACCESS_DENIED_ERROR ,"当前用户无权访问数据表中的字段"),
new MyError(DB_ER_NO_SUCH_TABLE ,"数据表不存在"),
new MyError(DB_ER_NONEXISTING_TABLE_GRANT ,"未定义用户对数据表的访问权限"),
new MyError(DB_ER_SYNTAX_ERROR ,"SQL语句语法错误"),
new MyError(DB_ER_NET_READ_ERROR ,"网络错误，出现读错误，请检查网络连接状况"),
new MyError(DB_ER_NET_READ_INTERRUPTED ,"网络错误，读超时，请检查网络连接状况"),
new MyError(DB_ER_NET_ERROR_ON_WRITE ,"网络错误，出现写错误，请检查网络连接状况"),
new MyError(DB_ER_NET_WRITE_INTERRUPTED ,"网络错误，写超时，请检查网络连接状况"),
new MyError(DB_ER_DUP_ENTRY ,"字段值重复，入库失败"),
new MyError(DB_ER_DUP_UNIQUE ,"字段值重复，更新记录失败"),
new MyError(DB_ER_CHECK_NO_SUCH_TABLE ,"打开数据表失败"),
new MyError(DB_ER_ERROR_DURING_COMMIT ,"提交事务失败"),
new MyError(DB_ER_ERROR_DURING_ROLLBACK ,"回滚事务失败"),
new MyError(DB_ER_TOO_MANY_USER_CONNECTIONS ,"当前用户和数据库建立的连接已到达数据库的最大连接数，请增大可用的数据库连接数或重启数据库"),
new MyError(DB_ER_LOCK_WAIT_TIMEOUT ,"加锁超时"),
new MyError(DB_ER_NO_PERMISSION_TO_create_USER ,"当前用户没有创建用户的权限"),
new MyError(DB_ER_NO_REFERENCED_ROW ,"外键约束检查失败，更新子表记录失败"),
new MyError(DB_ER_ROW_IS_REFERENCED ,"外键约束检查失败，删除或修改主表记录失败"),
new MyError(DB_ER_USER_LIMIT_REACHED ,"当前用户使用的资源已超过所允许的资源，请重启数据库或重启服务器"),
new MyError(DB_ER_SPECIFIC_ACCESS_DENIED_ERROR ,"权限不足，您无权进行此操作"),
new MyError(DB_ER_NOT_SUPPORTED_YET ,"MySQL版本过低，不具有本功能"),
};
public static String getErrorInfo(int errno)
{
for(int i=0; i<errormap.length; i++)
{
if(errno == errormap[i].getErrorNo())
{
return errormap[i].getErrorDesc();
}
}
return "";
}
public String  getErrorMessage(int errorcode)
{
  String error=null;
for(int i=0; i<errormap.length; i++)
{
  if(errormap[i].getErrorNo()==errorcode)
  {
    error = errormap[i].getErrorNo() + "：" + errormap[i].getErrorDesc();
    break;
  }
}
return error;
}
}