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預覽地址:
https://blog.csdn.net/zhao_fu_lu/article/details/82421818
代碼片段和文件信息
package?com.zhuce.dao;
import?java.sql.Connection;
import?java.sql.PreparedStatement;
import?java.sql.ResultSet;
import?java.sql.SQLException;
import?java.util.ArrayList;
import?java.util.List;
import?com.zhuce.entity.Admin;
import?com.zhuce.entity.Msg;
/**
?*?@author?weixin:zfldiv1101
?*/
public?class?AdminDao?{
public?List?getAllMsg(String?schoolname?String?zhuanyename)?{
List?list?=?new?ArrayList();?
Connection?conn?=?DbHelper.getConnection();
String?sql?=?“select?*?from?msg?where?1=1?“;
if?(schoolname?!=?null?&&?!““.equals(schoolname))?{
sql?+=?“?and?schoolname?like?‘%“+schoolname+“%‘“;?
}
if(zhuanyename?!=?null?&&?!““.equals(zhuanyename))?{
sql?+=?“?and?zhuanyename?like?‘%“+zhuanyename+“%‘“;
}
try?{
PreparedStatement?pst?=?conn.prepareStatement(sql);
ResultSet?rst?=?pst.executeQuery();
while?(rst.next())?{
Msg?admin?=?new?Msg();
admin.setId(rst.getInt(“id“));
admin.setSchoolname(rst.getString(“schoolname“));
admin.setZhuanyename(rst.getString(“zhuanyename“));
list.add(admin);
}
rst.close();?
pst.close();?
}?catch?(SQLException?e)?{
e.printStackTrace();?
}
return?list;?
}
public?List?getAllAdmin()?{
List?list?=?new?ArrayList();?
Connection?conn?=?DbHelper.getConnection();
String?sql?=?“select?*?from?admina?“;
try?{
PreparedStatement?pst?=?conn.prepareStatement(sql);
ResultSet?rst?=?pst.executeQuery();
while?(rst.next())?{
Admin?admin?=?new?Admin();
admin.setId(rst.getInt(“id“));?
admin.setUsername(rst.getString(“username“));
admin.setUserpwd(rst.getString(“userpwd“));
list.add(admin);
}
rst.close();
pst.close();
}?catch?(SQLException?e)?{
e.printStackTrace();
}
return?list;
}
?
public?boolean?addAdmin(Admin?admin)?{?
String?sql?=?“INSERT?INTO?‘admina‘(‘id‘‘username‘‘userpwd‘)?VALUES?(???)“;
Connection?conn?=?DbHelper.getConnection();
try?{
PreparedStatement?pst?=?conn.prepareStatement(sql);
pst.setInt(1?admin.getId());
pst.setString(2?admin.getUsername());
pst.setString(3?admin.getUserpwd());
int?count?=?pst.executeUpdate();
pst.close();
return?count?>?0???true?:?false;?
}?catch?(SQLException?e)?{
e.printStackTrace();
}
return?false;
}
?
public?boolean?updateAdmin(Admin?admin)?{?
String?sql?=?“UPDATE?‘admina‘?SET?‘username‘=?‘userpwd‘=??WHERE?‘id‘?=??“;
Connection?conn?=?DbHelper.getConnection();
try?{
PreparedStatement?pst?=?conn.prepareStatement(sql);
pst.setString(1?admin.getUsername());
pst.setString(2?admin.getUserpwd());
pst.setInt(3?admin.getId());?
int?count?=?pst.executeUpdate();
pst.close();?
return?count?>?0???true?:?false;
}?catch?(SQLException?e)?{
e.printStackTrace();
}
return?false;
}
?
public?boolean?deleteAdmin(int?id)?{?//????
String?sql?=?“delete?from?admin
?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????文件???????4578??2018-09-05?11:55??zhuce\src\com\zhuce\dao\AdminDao.java
?????文件????????789??2018-09-05?11:56??zhuce\src\com\zhuce\dao\DbHelper.java
?????文件????????674??2018-09-05?11:54??zhuce\src\com\zhuce\entity\Admin.java
?????文件????????562??2018-09-05?11:56??zhuce\src\com\zhuce\entity\Msg.java
?????文件???????1186??2018-09-05?11:56??zhuce\src\com\zhuce\servlet\AddServlet.java
?????文件???????1017??2018-09-05?11:56??zhuce\src\com\zhuce\servlet\DeleteServlet.java
?????文件????????782??2018-09-05?11:57??zhuce\src\com\zhuce\servlet\HomeServlet.java
?????文件????????788??2018-09-05?11:57??zhuce\src\com\zhuce\servlet\KaoyanServlet.java
?????文件????????784??2018-09-05?12:44??zhuce\src\com\zhuce\servlet\LoginServlet.java
?????文件????????883??2018-09-05?12:44??zhuce\src\com\zhuce\servlet\LogoutServlet.java
?????文件????????778??2018-09-05?12:44??zhuce\src\com\zhuce\servlet\RegServlet.java
?????文件???????1242??2018-09-05?12:44??zhuce\src\com\zhuce\servlet\ShowServlet.java
?????文件???????1528??2018-09-05?12:44??zhuce\src\com\zhuce\servlet\ToLoginServlet.java
?????文件????????520??2018-09-05?12:45??zhuce\src\com\zhuce\utils\SessionUtil.java
?????文件????????857??2018-09-04?09:54??zhuce\WebContent\add.jsp
?????文件???????1938??2018-09-04?16:56??zhuce\WebContent\home.jsp
?????文件???????3441??2018-09-04?23:40??zhuce\WebContent\index.jsp
?????文件???????1945??2018-09-04?16:56??zhuce\WebContent\kaoyan.jsp
?????文件???????2807??2018-09-04?15:49??zhuce\WebContent\login.jsp
?????文件?????????39??2018-09-04?09:26??zhuce\WebContent\me
?????文件???????2803??2018-09-04?15:49??zhuce\WebContent\reg.jsp
?????文件??????43852??2018-09-04?12:40??zhuce\WebContent\static\css\bootstrap-grid.css
?????文件??????95910??2018-09-04?12:40??zhuce\WebContent\static\css\bootstrap-grid.css.map
?????文件??????34243??2018-09-04?12:40??zhuce\WebContent\static\css\bootstrap-grid.min.css
?????文件??????76209??2018-09-04?12:40??zhuce\WebContent\static\css\bootstrap-grid.min.css.map
?????文件???????4798??2018-09-04?12:40??zhuce\WebContent\static\css\bootstrap-reboot.css
?????文件??????57721??2018-09-04?12:40??zhuce\WebContent\static\css\bootstrap-reboot.css.map
?????文件???????3936??2018-09-04?12:40??zhuce\WebContent\static\css\bootstrap-reboot.min.css
?????文件??????25881??2018-09-04?12:40??zhuce\WebContent\static\css\bootstrap-reboot.min.css.map
?????文件?????178152??2018-09-04?12:40??zhuce\WebContent\static\css\bootstrap.css
............此處省略44個文件信息
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