jdbc，數據庫案例：客戶信息管理系統：jsp部分，數據庫數據封裝類，dao接口和實現

時間 2019-11-12

標籤 jdbc 數據庫案例客戶信息管理系統 jsp 部分數據封裝 dao 接口實現欄目 Java 简体版

原文原文鏈接

jsp部分：javascript

默認主頁：java

index.jsp:sql

<body>
<jsp:forward page="/servlet/Controller">
<jsp:param value="showAllCustomers" name="op"/>
</jsp:forward>
</body>數據庫

顯示客戶信息：jsp

listCustomer.jsp:post

<body>
<div>
  <a href="${pageContext.request.contextPath }/addCustomer.jsp">添加</a>
  <a href="javascript:delMulti()">刪除</a>
</div>
    <c:if test="${empty page.records}">
    沒有客戶信息
    </c:if>
    <c:if test="${!empty page.records}">
    <form action="${pageContext.request.contextPath}/servlet/Controller?op=delMulti" method="post">
    <table bordercolor="1" border="1" width="80%">
      <tr>
       <th>選擇</th>
       <th>客戶姓名</th>
       <th>性別</th>
       <th>出生日期</th>
       <th>聯繫電話</th>
       <th>郵箱</th>
       <th>愛好</th>
       <th>類型</th>
       <th>描述</th>
       <th>操做</th>
      </tr>
      <c:forEach items="${page.records}" var="c" varStatus="vs">
       <table bordercolor="1" border="1" width="80%">
        <tr class="${vs.index%2==0?'order':'even'}">
         <td>
          <input type="checkbox" name="ids" value="${ c.id}"/>
         </td>
         <td>${c.name}</td>
         <td>${c.gender}</td>
         <td>${c.birthday}</td>
         <td>${c.cellphone}</td>
         <td>${c.email}</td>
         <td>${c.preference}</td>
         <td>${c.type}</td>
         <td>${c.description}</td>

         <td>
          <a href="${pageContext.request.contextPath }/servlet/Controller?op=editCustomerUI&customerId=${c.id}">修改</a>
          <a href="javascript:delOne('${c.id}')">刪除</a>
         </td>
        </tr>
       </table>
      </c:forEach>
    </table>
    </form>
    <%@ include file="/common/page.jsp" %>
    </c:if>

    <script type="text/javascript">
    function delMulti(){
      var select=false;
      var idsArray=document.getElementsByName("ids");
      for(var i=0;i<idsArray.length;i++){
       if(idsArray[i].checked){
        select=true;
       }
      }
      if(select){
       var sure=window.confirm("是否選擇刪除");
       if(sure){
        document.forms[0].submit();
       }
      }else{
       alert("請先選擇要刪除的客戶");
      }
    }
    function delOne(customerId){
      var sure=window.confirm("確認要刪除嗎");
      if(sure){
       window.location.href="${pageContext.request.contextPath }/servlet/Controller?op=delOneCustomer&customerId="+customerId;
      }
    }
    </script>
</body>this

增長客戶信息頁面：orm

addCustomer.jsp:接口

<form action="${pageContext.request.contextPath}/servlet/Controller?op=addCustomer" method="post">
    <table border="1">
      <tr>
       <td>
        姓名：<input type="text" name="name"/>
       </td>
      </tr>
      <tr>
       <td>
        性別：<input type="radio" name="gender" value="1"/>男
        <input type="radio" name="gender" value="0"/>女
       </td>
      </tr>
      <tr>
       <td>
        出生日期：<input type="text" name="birthday" value="1991-06-11"/>
       </td>
      </tr>
      <tr>
       <td>
        聯繫電話：<input type="text" name="cellphone" value="187"/>
       </td>
      </tr>
      <tr>
       <td>
        郵箱：<input type="text" name="email"/>
       </td>
      </tr>
      <tr>
       <td>
        興趣愛好：<input type="checkbox" name="preferences" value="吃飯" checked="checked"/>吃飯
        <input type="checkbox" name="preferences" value="睡覺"/>睡覺
        <input type="checkbox" name="preferences" value="學java"/>學java
       </td>
      </tr>
      <tr>
       <td>
        用戶類型：<input type="radio" name="type" value="普通客戶" checked="checked"/>普通用戶
        <input type="radio" name="type" value="vip" />vip用戶
       </td>
      </tr>
      <tr>
       <td>
        描述：<textarea rows="3" cols="38" name="description"></textarea>
       </td>
      </tr>
      <tr>
       <td>
        <input type="submit" value="保存"/>
       </td>
      </tr>
    </table>
    </form>
</body>ip

修改客戶信息頁面：

<body>
        <form action="${pageContext.request.contextPath}/servlet/Controller?op=editCustomer" method="post">
        <input type="hidden" name="id" value="${c.id}"/>
    <table border="1">
      <tr>
       <td>

        姓名：<input type="text" name="name" value="${c.name}"/>
       </td>
      </tr>
      <tr>
       <td>
        性別：<input type="radio" name="gender" value="1" ${c.gender=='1'?'checked="checked"':''}}"/>男
        <input type="radio" name="gender" value="0" ${c.gender=='0'?'checked="checked"':''}/>女
       </td>
      </tr>
      <tr>
       <td>
        出生日期：<input type="text" name="birthday" value="${c.birthday}"/>
       </td>
      </tr>
      <tr>
       <td>
        聯繫電話：<input type="text" name="cellphone" value="${c.cellphone}"/>
       </td>
      </tr>
      <tr>
       <td>
        郵箱：<input type="text" name="email" value="${c.email}"/>
       </td>
      </tr>
      <tr>
       <td>
        興趣愛好：<input type="checkbox" name="preferences" value="吃飯" ${fn:contains(c.preference,'吃飯')?'checked="checked"':' ' }/>吃飯
        <input type="checkbox" name="preferences" value="睡覺" ${fn:contains(c.preference,'睡覺')?'checked="checked"':' '}/>睡覺
        <input type="checkbox" name="preferences" value="學java" ${fn:contains(c.preference,'學java')?'checked="checked"':' '}/>學java
       </td>
      </tr>
      <tr>
       <td>
        用戶類型：<input type="radio" name="type" value="普通客戶" ${c.type=='普通用戶'?'checked="checked"':'' }/>普通用戶
        <input type="radio" name="type" value="vip" ${c.type=='普通用戶'?'checked="checked"':'' }/>vip用戶
       </td>
      </tr>
      <tr>
       <td>
        描述：<textarea rows="3" cols="38" name="description" value="${c.description}"></textarea>
       </td>
      </tr>
      <tr>
       <td>
        <input type="submit" value="保存"/>
       </td>
      </tr>
    </table>
    </form>
</body>

數據庫信息封裝類：

Customer:

public class Customer implements Serializable{
private String id;
private String name;
private String gender;
private Date birthday;
private String cellphone;
private String email;
private String preference;
private String type;
private String description;

public String getId() {
  return id;
}
public void setId(String id) {
  this.id = id;
}
public String getName() {
  return name;
}
public void setName(String name) {
  this.name = name;
}
public String getGender() {
  return gender;
}
public void setGender(String gender) {
  this.gender = gender;
}
public Date getBirthday() {
  return birthday;
}
public void setBirthday(Date birthday) {
  this.birthday = birthday;
}
public String getCellphone() {
  return cellphone;
}
public void setCellphone(String cellphone) {
  this.cellphone = cellphone;
}

public String getPreference() {
  return preference;
}
public void setPreference(String preference) {
  this.preference = preference;
}
public String getType() {
  return type;
}
public void setType(String type) {
  this.type = type;
}
public String getEmail() {
  return email;
}
public void setEmail(String email) {
  this.email = email;
}
public String getDescription() {
  return description;
}
public void setDescription(String description) {
  this.description = description;
}
}

dao層：

dao接口：

public interface CustomerDao {
@Deprecated
List<Customer> findAll();

void add(Customer c);

void delete(String customerId);

Customer findById(String customerId);

void update(Customer c);
int getTotalRecordsNum();
List<Customer> findPageCustomers(int offset,int size);
}

dao接口實現：

public class CustomerDaoImpl implements CustomerDao {
@Deprecated
public List<Customer> findAll() {
  Connection conn=null;
  PreparedStatement stmt=null;
  ResultSet rs=null;
  try{
   conn=JdbcUtil.getConnection();
   stmt=conn.prepareStatement("select *from customer");
   rs=stmt.executeQuery();
   List<Customer> list=new ArrayList<Customer>();
   while(rs.next()){
    Customer c =new Customer();
    c.setId(rs.getString("id"));
    c.setName(rs.getString("name"));
    c.setGender(rs.getString("gender"));
    c.setBirthday(rs.getDate("birthday"));
    c.setEmail(rs.getString("email"));
    c.setCellphone(rs.getString("cellphone"));
    c.setPreference(rs.getString("preference"));
    c.setType(rs.getString("type"));
    c.setDescription(rs.getString("description"));
    list.add(c);
   }
   return list;
  }catch(Exception e){
   throw new RuntimeException();
  }finally{
   JdbcUtil.release(rs, stmt, conn);
  }
}

public void add(Customer c) {
  Connection conn=null;
  PreparedStatement stmt=null;
  try{
   conn=JdbcUtil.getConnection();
   stmt=conn.prepareStatement("insert into customer values(?,?,?,?,?,?,?,?,?)");
   stmt.setString(1, c.getId());
   stmt.setString(2, c.getName());
   stmt.setString(3, c.getGender());
   stmt.setDate(4, new java.sql.Date(c.getBirthday().getTime()));
   stmt.setString(5, c.getCellphone());
   stmt.setString(6, c.getEmail());
   stmt.setString(7, c.getPreference());
   stmt.setString(8, c.getType());
   stmt.setString(9, c.getDescription());
   stmt.executeUpdate();
  }catch(Exception e){
   throw new RuntimeException(e);
  }finally{
   JdbcUtil.release(null, stmt, conn);
  }
}

public void delete(String customerId) {
  Connection conn=null;
  PreparedStatement stmt=null;
  try{
   conn=JdbcUtil.getConnection();
   stmt=conn.prepareStatement("delete from customer where id=?");
   stmt.setString(1, customerId);
   stmt.executeUpdate();
  }catch(Exception e){
   throw new RuntimeException();
  }finally{
   JdbcUtil.release(null, stmt, conn);
  }
}

public Customer findById(String customerId) {
  Connection conn=null;
  PreparedStatement stmt=null;
  ResultSet rs=null;
  try{
   conn=JdbcUtil.getConnection();
   stmt=conn.prepareStatement("select *from customer where id=?");
   stmt.setString(1, customerId);
   rs=stmt.executeQuery();
   if(rs.next()){
    Customer c =new Customer();
    c.setId(rs.getString("id"));
    c.setName(rs.getString("name"));
    c.setGender(rs.getString("gender"));
    c.setBirthday(rs.getDate("birthday"));
    c.setEmail(rs.getString("email"));
    c.setCellphone(rs.getString("cellphone"));
    c.setType(rs.getString("type"));
    c.setDescription(rs.getString("description"));
    return c;
   }
   return null;
  }catch(Exception e){
   throw new RuntimeException();
  }finally{
   JdbcUtil.release(rs, stmt, conn);
  }
}

public void update(Customer c) {
  Connection conn=null;
  PreparedStatement stmt=null;
  try{
   conn=JdbcUtil.getConnection();
   stmt=conn.prepareStatement("update customer set id=?, name=?,gender=?,birthday=?,cellphone=?,email=?,preference=?,type=?,description=?");
   stmt.setString(1, c.getId());
   stmt.setString(2, c.getName());
   stmt.setString(3, c.getGender());
   stmt.setDate(4, new java.sql.Date(c.getBirthday().getTime()));
   stmt.setString(5, c.getCellphone());
   stmt.setString(6, c.getEmail());
   stmt.setString(7, c.getPreference());
   stmt.setString(8, c.getType());
   stmt.setString(9, c.getDescription());
   stmt.executeUpdate();
  }catch(Exception e){
   throw new RuntimeException(e);
  }finally{
   JdbcUtil.release(null, stmt, conn);
  }
}

public int getTotalRecordsNum() {
  Connection conn=null;
  PreparedStatement stmt=null;
  ResultSet rs=null;
  try{
   conn=JdbcUtil.getConnection();
   stmt=conn.prepareStatement("select count(*) from customer");
   rs=stmt.executeQuery();
   if(rs.next()){
    return rs.getInt(1);
   }
   return 0;
  }catch(Exception e){
   throw new RuntimeException();
  }finally{
   JdbcUtil.release(rs, stmt, conn);
  }
}

public List<Customer> findPageCustomers(int offset, int size) { Connection conn=null; PreparedStatement stmt=null; ResultSet rs=null; try{ conn=JdbcUtil.getConnection(); stmt=conn.prepareStatement("select *from customer limit ?,?"); stmt.setInt(1, offset); stmt.setInt(2, size); rs=stmt.executeQuery(); List<Customer> list=new ArrayList<Customer>(); while(rs.next()){ Customer c =new Customer(); c.setId(rs.getString("id")); c.setName(rs.getString("name")); c.setGender(rs.getString("gender")); c.setBirthday(rs.getDate("birthday")); c.setEmail(rs.getString("email")); c.setCellphone(rs.getString("cellphone")); c.setPreference(rs.getString("preference")); c.setType(rs.getString("type")); c.setDescription(rs.getString("description")); list.add(c); } return list; }catch(Exception e){ throw new RuntimeException(); }finally{ JdbcUtil.release(rs, stmt, conn); } }}