反射工具类RelfectionUtils
1 package Utils;
2
3 import java.lang.reflect.Field;
4 import java.lang.reflect.InvocationTargetException;
5 import java.lang.reflect.Method;
6 import java.lang.reflect.Modifier;
7 import java.lang.reflect.ParameterizedType;
8 import java.lang.reflect.Type;
9
10 /**
11 * 反射的 Utils 函数集合
12 * 提供访问私有变量, 获取泛型类型 Class, 提取集合中元素属性等 Utils 函数
13 * @author Administrator
14 *
15 */
16 public class ReflectionUtils {
17
18
19 /**
20 * 通过反射, 获得定义 Class 时声明的父类的泛型参数的类型
21 * 如: public EmployeeDao extends BaseDao<Employee, String>
22 * @param clazz
23 * @param index
24 * @return
25 */
26 @SuppressWarnings("unchecked")
27 public static Class getSuperClassGenricType(Class clazz, int index){
28 Type genType = clazz.getGenericSuperclass();
29
30 if(!(genType instanceof ParameterizedType)){
31 return Object.class;
32 }
33
34 Type [] params = ((ParameterizedType)genType).getActualTypeArguments();
35
36 if(index >= params.length || index < 0){
37 return Object.class;
38 }
39
40 if(!(params[index] instanceof Class)){
41 return Object.class;
42 }
43
44 return (Class) params[index];
45 }
46
47 /**
48 * 通过反射, 获得 Class 定义中声明的父类的泛型参数类型
49 * 如: public EmployeeDao extends BaseDao<Employee, String>
50 * @param <T>
51 * @param clazz
52 * @return
53 */
54 @SuppressWarnings("unchecked")
55 public static<T> Class<T> getSuperGenericType(Class clazz){
56 return getSuperClassGenricType(clazz, 0);
57 }
58
59 /**
60 * 循环向上转型, 获取对象的 DeclaredMethod
61 * @param object
62 * @param methodName
63 * @param parameterTypes
64 * @return
65 */
66 public static Method getDeclaredMethod(Object object, String methodName, Class<?>[] parameterTypes){
67
68 for(Class<?> superClass = object.getClass(); superClass != Object.class; superClass = superClass.getSuperclass()){
69 try {
70 //superClass.getMethod(methodName, parameterTypes);
71 return superClass.getDeclaredMethod(methodName, parameterTypes);
72 } catch (NoSuchMethodException e) {
73 //Method 不在当前类定义, 继续向上转型
74 }
75 //..
76 }
77
78 return null;
79 }
80
81 /**
82 * 使 filed 变为可访问
83 * @param field
84 */
85 public static void makeAccessible(Field field){
86 if(!Modifier.isPublic(field.getModifiers())){
87 field.setAccessible(true);
88 }
89 }
90
91 /**
92 * 循环向上转型, 获取对象的 DeclaredField
93 * @param object
94 * @param filedName
95 * @return
96 */
97 public static Field getDeclaredField(Object object, String filedName){
98
99 for(Class<?> superClass = object.getClass(); superClass != Object.class; superClass = superClass.getSuperclass()){
100 try {
101 return superClass.getDeclaredField(filedName);
102 } catch (NoSuchFieldException e) {
103 //Field 不在当前类定义, 继续向上转型
104 }
105 }
106 return null;
107 }
108
109 /**
110 * 直接调用对象方法, 而忽略修饰符(private, protected)
111 * @param object
112 * @param methodName
113 * @param parameterTypes
114 * @param parameters
115 * @return
116 * @throws InvocationTargetException
117 * @throws IllegalArgumentException
118 */
119 public static Object invokeMethod(Object object, String methodName, Class<?> [] parameterTypes,
120 Object [] parameters) throws InvocationTargetException{
121
122 Method method = getDeclaredMethod(object, methodName, parameterTypes);
123
124 if(method == null){
125 throw new IllegalArgumentException("Could not find method [" + methodName + "] on target [" + object + "]");
126 }
127
128 method.setAccessible(true);
129
130 try {
131 return method.invoke(object, parameters);
132 } catch(IllegalAccessException e) {
133 System.out.println("不可能抛出的异常");
134 }
135
136 return null;
137 }
138
139 /**
140 * 直接设置对象属性值, 忽略 private/protected 修饰符, 也不经过 setter
141 * @param object
142 * @param fieldName
143 * @param value
144 */
145 public static void setFieldValue(Object object, String fieldName, Object value){
146 Field field = getDeclaredField(object, fieldName);
147
148 if (field == null)
149 throw new IllegalArgumentException("Could not find field [" + fieldName + "] on target [" + object + "]");
150
151 makeAccessible(field);
152
153 try {
154 field.set(object, value);
155 } catch (IllegalAccessException e) {
156 System.out.println("不可能抛出的异常");
157 }
158 }
159
160 /**
161 * 直接读取对象的属性值, 忽略 private/protected 修饰符, 也不经过 getter
162 * @param object
163 * @param fieldName
164 * @return
165 */
166 public static Object getFieldValue(Object object, String fieldName){
167 Field field = getDeclaredField(object, fieldName);
168
169 if (field == null)
170 throw new IllegalArgumentException("Could not find field [" + fieldName + "] on target [" + object + "]");
171
172 makeAccessible(field);
173
174 Object result = null;
175
176 try {
177 result = field.get(object);
178 } catch (IllegalAccessException e) {
179 System.out.println("不可能抛出的异常");
180 }
181
182 return result;
183 }
184 }
jdbcutils
1 package Utils;
2
3 import java.sql.Connection;
4 import java.sql.SQLException;
5
6 import javax.sql.DataSource;
7
8 import com.mchange.v2.c3p0.ComboPooledDataSource;
9
10 public class JdbcUtil {
11
12 public static void reaseConnection(Connection connection) {
13 try {
14 if(connection!=null){
15 connection.close();
16 }
17 } catch (SQLException e) {
18 // TODO Auto-generated catch block
19 e.printStackTrace();
20 }
21 }
22 private static DataSource dataSource = null;
23 static{
24 dataSource = new ComboPooledDataSource("mvc");
25 }
26
27 public static DataSource getDataSource(){
28 return dataSource;
29 }
30
31 public static Connection getConnection(){
32 try {
33 return dataSource.getConnection();
34 } catch (SQLException e) {
35 // TODO Auto-generated catch block
36 //e.printStackTrace();
37 System.out.println("连接失败");
38 }
39 return null;
40
41 }
42 }
DAO操作类 依靠c3p0，dbutil
1 package com.mvc.dao;
2
3 import java.lang.reflect.ParameterizedType;
4 import java.lang.reflect.Type;
5 import java.sql.Connection;
6 import java.sql.PreparedStatement;
7 import java.sql.SQLException;
8 import java.util.ArrayList;
9 import java.util.List;
10
11 import org.apache.commons.dbutils.QueryRunner;
12 import org.apache.commons.dbutils.handlers.BeanHandler;
13 import org.apache.commons.dbutils.handlers.BeanListHandler;
14 import org.apache.commons.dbutils.handlers.ScalarHandler;
15 import org.apache.el.util.ReflectionUtil;
16
17 import com.sun.org.apache.bcel.internal.generic.NEW;
18
19 import Utils.JdbcUtil;
20 import Utils.ReflectionUtils;
21
22 public class Dao<T> {
23 private Class<T> clazz;
24 private QueryRunner queryRunner= new QueryRunner(JdbcUtil.getDataSource());
25 public Dao() {
26 clazz = ReflectionUtils.getSuperGenericType(this.getClass());
27 }
28 public <E> E getForValue(String sql,Object ...arg){
29 try {
30 return (E) queryRunner.query(sql,new ScalarHandler(),arg);
31 } catch (SQLException e) {
32 // TODO Auto-generated catch block
33 e.printStackTrace();
34 System.out.println("getForValue error");
35 }
36 return null;
37
38 }
39 public List<T> getForList(String sql,Object ...args){
40 try {
41 return queryRunner.query(sql, new BeanListHandler<>(clazz),args);
42 } catch (SQLException e) {
43 System.out.println("getForList error");
44 }
45 return null;
46
47
48 }
49 public T get(String sql,Object ...args){
50 try {
51 return queryRunner.query(sql,new BeanHandler<>(clazz),args);
52 } catch (SQLException e) {
53 // TODO Auto-generated catch block
54 //e.printStackTrace();
55 System.out.println("get error");
56 }
57 return null;
58 }
59
60 public void updata(String sql,Object ...args){
61 try {
62 queryRunner.update(sql,args);
63 } catch (SQLException e) {
64 // TODO Auto-generated catch block
65 //e.printStackTrace();
66 System.out.println("updata error");
67 }
68 }
69 }
Customer类
package com.mvc.domain;
public class Customer {
private String id;
private String name;
private String address;
private String phone;
private int count;
public Customer() {
super();
}
public Customer(String id, String name, String address, String phone) {
super();
this.id = id;
this.name = name;
this.address = address;
this.phone = phone;
this.count = 0;
}
public int getCount() {
return count;
}
public void setCount(int count) {
this.count = count;
}
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 getAddress() {
return address;
}
public void setAddress(String address) {
this.address = address;
}
public String getPhone() {
return phone;
}
public void setPhone(String phone) {
this.phone = phone;
}
@Override
public String toString() {
return "Customer [id=" + id + ", name=" + name + ", address=" + address + ", phone=" + phone + "]";
}
}
CustomerDao接口
1 package com.mvc.dao;
2
3 import java.util.List;
4
5 import com.mvc.domain.CriteriaCustomer;
6 import com.mvc.domain.Customer;
7
8 public interface CustomerDao {
9 public List<Customer> getAll();
10 public void save(Customer customer);
11 public void upCount(Customer customer);
12 public void upAll(Customer customer);
13 public Customer getForIdName(String id,String name);
14 public Customer getForId(String id);
15 public void delete(String id);
16 public long getCountWithName(String name);
17 public long getCountWithId(String id);
18 public List<Customer> getCriteriaCustomers(CriteriaCustomer cc);
19 }
操作类
1 package com.mvc.jdbc;
2
3 import java.sql.SQLException;
4 import java.util.List;
5
6 import com.mvc.dao.CustomerDao;
7 import com.mvc.dao.Dao;
8 import com.mvc.domain.CriteriaCustomer;
9 import com.mvc.domain.Customer;
10
11 public class CustomerDaoJdbc extends Dao<Customer> implements CustomerDao{
12
13 @Override
14 public List<Customer> getAll(){
15 // TODO Auto-generated method stub
16 String sql = "SELECT * FROM customer";
17 return getForList(sql);
18 }
19
20 @Override
21 public void save(Customer customer) {
22 // TODO Auto-generated method stub
23 String sql = "insert into customer(id,name,address,phone,count) value(?,?,?,?,?)";
24 updata(sql,customer.getId(),customer.getName(),customer.getAddress(),customer.getPhone(),customer.getCount());
25
26 }
27
28 @Override
29 public void upAll(Customer customer) {
30 // TODO Auto-generated method stub
31 String sql = "UPDATE customer SET NAME=?,ADDRESS=?,PHONE=? WHERE ID=?";
32 updata(sql,customer.getName(),customer.getAddress(),customer.getPhone(),customer.getId());
33
34 }
35
36 @Override
37 public void upCount(Customer customer) {
38 // TODO Auto-generated method stub
39 String sql = "UPDATE customer SET COUNT=? WHERE ID=?";
40 updata(sql,customer.getCount(),customer.getId());
41 }
42
43 @Override
44 public Customer getForIdName(String id,String name) {
45 // TODO Auto-generated method stub
46 String sql = "SELECT id,name,address,phone,count FROM customer where id = ? and name = ?";
47 return get(sql,id,name);
48 }
49 @Override
50 public Customer getForId(String id) {
51 // TODO Auto-generated method stub
52 String sql = "SELECT id,name,address,phone,count FROM customer where id = ?";
53 return get(sql,id);
54 }
55 @Override
56 public void delete(String id) {
57 // TODO Auto-generated method stub
58 String sql = "delete from customer where ID = ? ";
59 updata(sql,id);
60
61 }
62
63 @Override
64 public long getCountWithName(String name) {
65 // TODO Auto-generated method stub
66 String sql = "select count(id) from customer where name = ?";
67 return (long)getForValue(sql, name);
68 }
69
70 @Override
71 public List<Customer> getCriteriaCustomers(CriteriaCustomer cc) {
72 // TODO Auto-generated method stub
73 String sql = "SELECT * FROM customer WHERE NAME LIKE ? AND address LIKE ? AND phone LIKE ?";
74 System.out.println(cc.getName()+cc.getAddress()+cc.getPhone());
75 return getForList(sql,cc.getName(),cc.getAddress(),cc.getPhone());
76 }
77
78 @Override
79 public long getCountWithId(String id) {
80 // TODO Auto-generated method stub
81 String sql = "select count(id) from customer where id= ?";
82 return (long)getForValue(sql, id);
83 }
84
85
86
87
88
89
90
91
92
93 }
servlet
1 package com.mvc.servlet;
2
3 import java.io.IOException;
4 import java.lang.reflect.Method;
5 import java.util.ArrayList;
6 import java.util.List;
7
8 import javax.servlet.ServletException;
9 import javax.servlet.annotation.WebServlet;
10 import javax.servlet.http.HttpServlet;
11 import javax.servlet.http.HttpServletRequest;
12 import javax.servlet.http.HttpServletResponse;
13
14 import com.mvc.dao.CustomerDao;
15 import com.mvc.domain.CriteriaCustomer;
16 import com.mvc.domain.Customer;
17 import com.mvc.jdbc.CustomerDaoJdbc;
18 import com.sun.corba.se.impl.protocol.giopmsgheaders.Message;
19
20 import jdk.nashorn.internal.ir.RuntimeNode.Request;
21
22 /**
23 * Servlet implementation class SqlServlet
24 */
25 @WebServlet("/SqlServlet")
26 public class SqlServlet extends HttpServlet {
27 private static final long serialVersionUID = 1L;
28
29 /**
30 * @see HttpServlet#HttpServlet()
31 */
32 CustomerDao customerDao = null;
33
34 public SqlServlet() {
35 super();
36 // TODO Auto-generated constructor stub
37 customerDao = new CustomerDaoJdbc();
38 }
39
40 /**
41 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse
42 * response)
43 */
44 protected void doGet(HttpServletRequest request,
45 HttpServletResponse response) throws ServletException, IOException {
46 // TODO Auto-generated method stub
47 doPost(request, response);
48 }
49
50 /**
51 * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse
52 * response)
53 */
54 protected void doPost(HttpServletRequest request,
55 HttpServletResponse response) throws ServletException, IOException {
56 // TODO Auto-generated method stub
57 request.setCharacterEncoding("utf-8");
58 String servletPath = request.getServletPath();
59 // System.out.println(servletPath);
60 servletPath = servletPath.substring(1, servletPath.length() - 3);
61 try {
62 Method method = getClass().getDeclaredMethod(servletPath,
63 HttpServletRequest.class, HttpServletResponse.class);
64 method.invoke(this, request, response);
65 } catch (Exception e) {
66 // TODO Auto-generated catch block
67 e.printStackTrace();
68 }
69
70 }
71
72 @SuppressWarnings("unused")
73 private void edit(HttpServletRequest request, HttpServletResponse response)
74 throws ServletException, IOException {
75 System.out.println("edit");
76 String id = request.getParameter("id");
77 System.out.println(id);
78 Customer customer = customerDao.getForId(id);
79 System.out.println(customer);
80 request.setAttribute("customer", customer);
81 request.getRequestDispatcher("/updata.jsp").forward(request, response);
82 }
83
84 @SuppressWarnings("unused")
85 private void updata(HttpServletRequest request, HttpServletResponse response)
86 throws ServletException, IOException {
87 System.out.println("updata");
88 String id = request.getParameter("id");
89 String name = request.getParameter("name");
90 String address = request.getParameter("address");
91 String phone = request.getParameter("phone");
92 Customer customer = new Customer(id, name, address, phone);
93 String massage;
94 massage = "修改成功";
95 customerDao.upAll(customer);
96 request.setAttribute("massage", massage);
97 request.setAttribute("customer", customer);
98 request.getRequestDispatcher("/updata.jsp").forward(request, response);
99
100 }
101
102 @SuppressWarnings("unused")
103 private void add(HttpServletRequest request, HttpServletResponse response)
104 throws ServletException, IOException {
105 System.out.println("add");
106 String id = request.getParameter("id");
107 String name = request.getParameter("name");
108 String address = request.getParameter("address");
109 String phone = request.getParameter("phone");
110 Customer customer = new Customer(id, name, address, phone);
111 System.out.println(customer);
112 long count = customerDao.getCountWithName(name);
113 long count1 = customerDao.getCountWithId(id);
114 System.out.println("count:" + count);
115 request.setAttribute("id", id);
116 request.setAttribute("name", name);
117 request.setAttribute("address", address);
118 request.setAttribute("phone", phone);
119 if (count1 > 0) {
120 request.setAttribute("massage", "学号已存在，报名失败");
121 request.getRequestDispatcher("/newcustomer.jsp").forward(request,
122 response);
123 } else {
124 request.setAttribute("massage", "报名成功");
125 customerDao.save(customer);
126 request.getRequestDispatcher("/newcustomer.jsp").forward(request,
127 response);
128 }
129 }
130
131 @SuppressWarnings("unused")
132 private void delete(HttpServletRequest request, HttpServletResponse response)
133 throws IOException {
134 System.out.println("delete");
135 String id = request.getParameter("id");
136 System.out.println(id);
137 //customerDao.delete(id);
138
139 //response.sendRedirect("query.do");
140 }
141
142 @SuppressWarnings("unused")
143 private void query(HttpServletRequest request, HttpServletResponse response) {
144 String name = request.getParameter("name");
145 String address = request.getParameter("address");
146 String phone = request.getParameter("phone");
147 System.out.println(name + address + phone);
148 System.out.println("query");
149 CriteriaCustomer cc = new CriteriaCustomer(name, address, phone);
150 List<Customer> customers = customerDao.getCriteriaCustomers(cc);
151 request.setAttribute("customers", customers);
152 try {
153 request.getRequestDispatcher("/ypacm507.jsp").forward(request,
154 response);
155 } catch (ServletException | IOException e) {
156 // TODO Auto-generated catch block
157 e.printStackTrace();
158 }
159 }
160
161 @SuppressWarnings("unused")
162 private void come(HttpServletRequest request, HttpServletResponse response) {
163 String name = request.getParameter("name");
164 String id = request.getParameter("id");
165 Customer customer = customerDao.getForIdName(id, name);
166 System.out.println(customer);
167 if (customer != null) {
168 request.setAttribute("massage", "");
169 customer.setCount(customer.getCount() + 1);
170 customerDao.upCount(customer);
171 //response.sendRedirect("NewFile_1.jsp");
172 try {
173 request.getRequestDispatcher("/NewFile_1.jsp").forward(request,
174 response);
175 } catch (ServletException | IOException e) {
176 // TODO Auto-generated catch block
177 e.printStackTrace();
178 }
179
180 } else {
181 try {
182 String massage = "名字或学号错误";
183 request.setAttribute("massage", massage);
184 request.setAttribute("id", id);
185 request.setAttribute("name", name);
186 request.getRequestDispatcher("/come.jsp").forward(request,
187 response);
188 } catch (ServletException | IOException e) {
189 // TODO Auto-generated catch block
190 e.printStackTrace();
191 }
192 }
193 }
194 }
以下jsp代码 css样式等为网上找的素材
1.增加用户的jsp
1 <%@ page language="java" contentType="text/html; charset=utf-8"
2 pageEncoding="utf-8"%>
3 <%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
4 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
5 <html>
6 <head>
7 <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
8 <!--[if IE]><meta http-equiv="x-ua-compatible" content="IE=9" /><![endif]-->
9 <meta name="viewport" content="width=device-width, initial-scale=1">
10 <meta name="description" content="Your Description Here">
11 <meta name="keywords"
12 content="bootstrap themes, portfolio, responsive theme">
13 <meta name="author" content="ThemeForces.Com">
14
15 <!-- Favicons
16 ================================================== -->
17 <!-- <link rel="shortcut-icon" href="img/favicon.ico" type="image/x-icon"> -->
18 <!-- <link rel="apple-touch-icon" href="img/apple-touch-icon.png"> -->
19 <link rel="apple-touch-icon" sizes="72x72"
20 href="img/apple-touch-icon-72x72.png">
21 <link rel="apple-touch-icon" sizes="114x114"
22 href="img/apple-touch-icon-114x114.png">
23
24 <!-- Bootstrap -->
25 <link rel="stylesheet" type="text/css" href="css/bootstrap.css">
26 <!-- <link rel="stylesheet" type="text/css"
27 href="fonts/font-awesome/css/font-awesome.css"> -->
28
29 <!-- Stylesheet
30 ================================================== -->
31 <link rel="stylesheet" type="text/css" href="css/style.css">
32 <!-- <link rel="stylesheet" type="text/css" href="css/responsive.css"> -->
33
34 <!-- <script type="text/javascript" src="js/modernizr.custom.js"></script> -->
35
36
37 <title></title>
38 </head>
39 <body>
40 <h3 style="text-align: center;"><font color="red"><c:out value="${massage}"></c:out></font></h3>
41 <div id="tf-contact">
42 <div class="container">
43 <div class="section-title">
46 <hr>
47 </div>
48
49 <div class="space"></div>
50
51 <div class="row">
52 <div class="col-md-6 col-md-offset-3">
53 <form id="contact" action="add.do" method="post">
54 <div class="form-group">
55 <input class="form-control" id="exampleInputEmail1" type="text"
56 name="id" value="${id}" placeholder="长学号" />
57 </div>
58
59 <div class="form-group">
60 <input class="form-control" type="text" name="name"
61 value="${name}" placeholder="姓名" />
62 </div>
63
64
65 <div class="form-group">
66 <input class="form-control" type="text" name="address"
67 value="${address}" placeholder="班级" />
68 </div>
69
70 <td><div class="form-group">
71 <input class="form-control" type="text" name="phone"
72 value="${phone}" placeholder="手机" />
73 </div>
74 <input class="btn btn-primary my-btn dark" type="submit"
75 value="--报名--" />
76 </form>
77 </div>
78 </div>
79 </div>
80 </div>
81 <!-- <script type="text/javascript" src="js/jquery.1.11.1.js"></script>-->
82 <!-- Include all compiled plugins (below), or include individual files as needed -->
83 <!-- <script type="text/javascript" src="js/bootstrap.js"></script> -->
84
85 <!-- Javascripts
86 ================================================== -->
87 <!-- <script type="text/javascript" src="js/main.js"></script>-->
88 </body>
89 </html>
2.查询
1 <%@ page language="java" contentType="text/html; charset=UTF-8"
2 pageEncoding="UTF-8"%>
3 <%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
4
5 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
6 <html>
7 <head>
8 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
9 <title>Insert title here</title>
10 <script type="text/javascript" src="scripts/jquery-1.7.2.js"></script>
11 <script type="text/javascript">
21 </script>
22 </head>
23 <body>
24
25 <form action="query.do" method="post">
26 <table>
27 <tr>
28 <td>CustomerName:</td>
29 <td><input type="text" name="name"/></td>
30 </tr>
31 <tr>
32 <td>Address:</td>
33 <td><input type="text" name="address"/></td>
34 </tr>
35 <tr>
36 <td>Phone:</td>
37 <td><input type="text" name="phone"/></td>
38 </tr>
39 <tr>
40 <td><input type="submit" value="Query"/></td>
41 <td><a href="newcustomer.jsp">Add New Customer</a></td>
42 </tr>
43 </table>
44 </form>
45
46 <br><br>
47
48 <c:if test="${!empty requestScope.customers }">
49
50 <hr>
51 <br><br>
52
53 <table border="1" cellpadding="10" cellspacing="0">
54 <tr>
55 <th>^ID</th>
56 <th>CustomerName</th>
57 <th>Address</th>
58 <th>Phone</th>
59 <th>UPDATE\DELETE</th>
60 </tr>
61
62 <c:forEach items="${requestScope.customers }" var="cust">
63
64 <tr>
65 <td>${cust.id }</td>
66 <td>${cust.name }</td>
67 <td>${cust.address }</td>
68 <td>${cust.phone }</td>
69 <td>
70 <c:url value="/edit.do" var="editurl">
71 <c:param name="id" value="${cust.id }"></c:param>
72 </c:url>
73 <a href="${editurl }">UPDATE</a>
74 <c:url value="/delete.do" var="deleteurl">
75 <c:param name="id" value="${cust.id }"></c:param>
76 </c:url>
77 <a href="${deleteurl }" class="delete">DELETE</a>
78 </td>
79 </tr>
80
81 </c:forEach>
82
83 </table>
84 </c:if>
85
86 </body>
87 </html>
3.删除
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
<script type="text/javascript" src="scripts/jquery-1.7.2.js"></script>
</head>
<body>
<form action="query.do" method="post">
<table>
<tr>
<td>CustomerName:</td>
<td><input type="text" name="name"/></td>
</tr>
<tr>
<td>Address:</td>
<td><input type="text" name="address"/></td>
</tr>
<tr>
<td>Phone:</td>
<td><input type="text" name="phone"/></td>
</tr>
<tr>
<td><input type="submit" value="Query"/></td>
<td><a href="newcustomer.jsp">Add New Customer</a></td>
</tr>
</table>
</form>
<br><br>
<c:if test="${!empty requestScope.customers }">
<hr>
<br><br>
<table border="1" cellpadding="10" cellspacing="0">
<tr>
<th>^ID</th>
<th>CustomerName</th>
<th>Address</th>
<th>Phone</th>
<th>UPDATE\DELETE</th>
</tr>
<c:forEach items="${requestScope.customers }" var="cust">
<tr>
<td>${cust.id }</td>
<td>${cust.name }</td>
<td>${cust.address }</td>
<td>${cust.phone }</td>
<td>
<c:url value="/edit.do" var="editurl">
<c:param name="id" value="${cust.id }"></c:param>
</c:url>
<a href="${editurl }">UPDATE</a>
<c:url value="/delete.do" var="deleteurl">
<c:param name="id" value="${cust.id }"></c:param>
</c:url>
<a href="${deleteurl }" class="delete">DELETE</a>
</td>
</tr>
</c:forEach>
</table>
</c:if>
</body>
</html>
4.修改
<%@ page language="java" contentType="text/html; charset=utf-8"
pageEncoding="utf-8"%>
<%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<!--[if IE]><meta http-equiv="x-ua-compatible" content="IE=9" /><![endif]-->
<meta name="viewport" content="width=device-width, initial-scale=1">
<meta name="description" content="Your Description Here">
<meta name="keywords"
content="bootstrap themes, portfolio, responsive theme">
<meta name="author" content="ThemeForces.Com">
<!-- Favicons
================================================== -->
<link rel="shortcut icon" href="img/favicon.ico" type="image/x-icon">
<link rel="apple-touch-icon" href="img/apple-touch-icon.png">
<link rel="apple-touch-icon" sizes="72x72"
href="img/apple-touch-icon-72x72.png">
<link rel="apple-touch-icon" sizes="114x114"
href="img/apple-touch-icon-114x114.png">
<!-- Bootstrap -->
<link rel="stylesheet" type="text/css" href="css/bootstrap.css">
<link rel="stylesheet" type="text/css"
href="fonts/font-awesome/css/font-awesome.css">
<!-- Stylesheet
================================================== -->
<link rel="stylesheet" type="text/css" href="css/style.css">
<link rel="stylesheet" type="text/css" href="css/responsive.css">
<script type="text/javascript" src="js/modernizr.custom.js"></script>
<title></title>
</head>
<body>
<c:if test="${requestScope.massage != null }">
<br>
<h3 style="text-align: center;"><font color="red"><c:out value="${massage}"></c:out></font></h3>
<br>
<br>
</c:if>
<c:set var="id" value="${customer != null ? customer.id : param.id }"></c:set>
<c:set var="name"
value="${customer != null ? customer.name : param.name }"></c:set>
<c:set var="address"
value="${customer != null ? customer.address : param.address }"></c:set>
<c:set var="phone"
value="${customer != null ? customer.phone : param.phone }"></c:set>
<div id="tf-contact">
<div class="container">
<div class="section-title">
<hr>
</div>
<div class="space"></div>
<div class="row">
<div class="col-md-6 col-md-offset-3">
<form id="contact" action="updata.do" method="post">
<input type="hidden" name="id" value="${id }"></input>
<div class="form-group">
<h4>姓名:</h4>
<input class="form-control" type="text" name="name"
value="${name}" placeholder="姓名" />
</div>
<div class="form-group">
<h4>班级:</h4>
<input class="form-control" type="text" name="address"
value="${address}" placeholder="班级" />
</div>
<div class="form-group">
<h4>手机:</h4>
<input class="form-control" type="text" name="phone"
value="${phone}" placeholder="手机" />
</div> <input class="btn btn-primary my-btn dark" type="submit"
value="修改" />
</form>
</div>
</div>
</div>
</div>
<script type="text/javascript" src="js/jquery.1.11.1.js"></script>
<!-- Include all compiled plugins (below), or include individual files as needed -->
<script type="text/javascript" src="js/bootstrap.js"></script>
<!-- Javascripts
================================================== -->
<script type="text/javascript" src="js/main.js"></script>
</body>
</html>
运行效果 增加信息
数据库内数据
时间： 2024-10-25 04:26:54