crud springmvc

实体类：Student.java

1. package demo.entity;
2. public class Student
3. {
4. private int id;
5. private String name;
6. private String sex;
7. private String address;
8. public int getId()
9. {
10. return id;
11. }
12. public void setId(int id)
13. {
14. this.id = id;
15. }
16. public String getName()
17. {
18. return name;
19. }
20. public void setName(String name)
21. {
22. this.name = name;
23. }
24. public String getSex()
25. {
26. return sex;
27. }
28. public void setSex(String sex)
29. {
30. this.sex = sex;
31. }
32. public String getAddress()
33. {
34. return address;
35. }
36. public void setAddress(String address)
37. {
38. this.address = address;
39. }
40. }

IStudentDao.java

1. package demo.dao;
2. import java.util.List;
3. import demo.entity.Student;
4. public interface IStudentDao
5. {
6. public void insert(Student stu);
7. public void delete(int id);
8. public void update(Student stu);
9. public List<Student> findAll();
10. public Student findById(int id);
11. }

StudentDaoImpl.java

1. package demo.dao.impl;
2. import java.util.List;
3. import java.util.Map;
4. import javax.annotation.Resource;
5. import org.springframework.jdbc.core.BeanPropertyRowMapper;
6. import demo.dao.IStudentDao;
7. import demo.entity.Student;
8. public class StudentDaoImpl implements IStudentDao
9. {
10. public static final String INSERT = "insert into student(name,sex,address) values(?,?,?)";
11. public static final String DELETE = "delete from student where id=?";
12. public static final String UPDATE = "update student set name=?,sex=?,address=? where id=?";
13. public static final String FINDALL = "select * from student";
14. public static final String FINDBYID = "select * from student where id=?";
15. private org.springframework.jdbc.core.simple.SimpleJdbcTemplate simpleJdbcTemplate;
16. @Resource
17. public void setSimpleJdbcTemplate(
18. org.springframework.jdbc.core.simple.SimpleJdbcTemplate simpleJdbcTemplate)
19. {
20. this.simpleJdbcTemplate = simpleJdbcTemplate;
21. }
22. public void delete(int id)
23. {
24. // TODO Auto-generated method stub
25. this.simpleJdbcTemplate.update(DELETE, id);
26. }
27. @SuppressWarnings("deprecation")
28. public List<Student> findAll()
29. {
30. // TODO Auto-generated method stub
31. List<Student> stuList = this.simpleJdbcTemplate.query(FINDALL,new BeanPropertyRowMapper<Student>(Student.class));
32. return stuList;
33. }
34. public Student findById(int id)
35. {
36. // TODO Auto-generated method stub
37. Map<String, Object> stuMap = this.simpleJdbcTemplate.queryForMap(FINDBYID, id);
38. Student stu = new Student();
39. stu.setId(id);
40. stu.setName(stuMap.get("name").toString());
41. stu.setSex(stuMap.get("sex").toString());
42. stu.setAddress(stuMap.get("address").toString());
43. return stu;
44. }
45. public void insert(Student stu)
46. {
47. // TODO Auto-generated method stub
48. this.simpleJdbcTemplate.update(INSERT, stu.getName(),stu.getSex(),stu.getAddress());
49. }
50. public void update(Student stu)
51. {
52. // TODO Auto-generated method stub
53. this.simpleJdbcTemplate.update(UPDATE, stu.getName(),stu.getSex(),stu.getAddress(),stu.getId());
54. }
55. }

IStudentService.java

1. package demo.service;
2. import java.util.List;
3. import demo.entity.Student;
4. public interface IStudentService
5. {
6. public void insert(Student stu);
7. public void delete(int id);
8. public void update(Student stu);
9. public List<Student> findAll();
10. public Student findById(int id);
11. }

StudentServiceImpl.java

1. package demo.service.impl;
2. import java.util.List;
3. import javax.annotation.Resource;
4. import demo.dao.IStudentDao;
5. import demo.entity.Student;
6. import demo.service.IStudentService;
7. public class StudentServiceImpl implements IStudentService
8. {
9. private IStudentDao stuDao;
10. @Resource
11. public void setStuDao(IStudentDao stuDao)
12. {
13. this.stuDao = stuDao;
14. }
15. public void delete(int id)
16. {
17. // TODO Auto-generated method stub
18. stuDao.delete(id);
19. }
20. public List<Student> findAll()
21. {
22. // TODO Auto-generated method stub
23. return stuDao.findAll();
24. }
25. public Student findById(int id)
26. {
27. // TODO Auto-generated method stub
28. return stuDao.findById(id);
29. }
30. public void insert(Student stu)
31. {
32. // TODO Auto-generated method stub
33. stuDao.insert(stu);
34. }
35. public void update(Student stu)
36. {
37. // TODO Auto-generated method stub
38. stuDao.update(stu);
39. }
40. }

StudentController.java

1. package demo.controller;
2. import java.io.UnsupportedEncodingException;
3. import java.util.List;
4. import javax.annotation.Resource;
5. import javax.servlet.http.HttpServletRequest;
6. import javax.servlet.http.HttpServletResponse;
7. import org.springframework.stereotype.Controller;
8. import org.springframework.ui.ModelMap;
9. import org.springframework.web.bind.annotation.PathVariable;
10. import org.springframework.web.bind.annotation.RequestMapping;
11. import org.springframework.web.bind.annotation.RequestMethod;
12. import org.springframework.web.servlet.ModelAndView;
13. import demo.entity.Student;
14. import demo.service.IStudentService;
15. @Controller
16. @RequestMapping("/student")
17. public class StudentController
18. {
19. private IStudentService stuService;
20. @Resource
21. public void setStuService(IStudentService stuService)
22. {
23. this.stuService = stuService;
24. }
25. /**
26. * 全部
27. */
28. @RequestMapping(value = "/all", method = RequestMethod.GET)
29. public ModelAndView findAll(HttpServletRequest request,
30. HttpServletResponse response, ModelMap modelMap)
31. {
32. List<Student> stuList = stuService.findAll();
33. modelMap.put("stuList", stuList);
34. return new ModelAndView("allStudent", modelMap);
35. }
36. /**
37. * 删除
38. */
39. @RequestMapping(value = "/delete/{id}", method = RequestMethod.GET)
40. public String delete(HttpServletRequest request,
41. HttpServletResponse response, @PathVariable("id")
42. int id, ModelMap modelMap)
43. {
44. stuService.delete(id);
45. return "redirect:/student/all.do";
46. }
47. /**
48. * 添加
49. */
50. @RequestMapping(value = "/add", method = RequestMethod.POST)
51. public String addStudent(HttpServletRequest request,
52. HttpServletResponse response, Student stu)
53. throws UnsupportedEncodingException
54. {
55. stuService.insert(stu);
56. return "redirect:/student/all.do";
57. }
58. /**
59. * pre4Update
60. */
61. @RequestMapping("/pre4Update/{id}")
62. public ModelAndView pre4Update(HttpServletRequest request,
63. HttpServletResponse response, @PathVariable("id")
64. int id, ModelMap modelMap)
65. {
66. Student stu = stuService.findById(id);
67. modelMap.put("stu", stu);
68. return new ModelAndView("updateStudent", modelMap);
69. }
70. /**
71. * updateStudent
72. */
73. @RequestMapping("/updateStudent")
74. public String updateStudent(HttpServletRequest request,
75. HttpServletResponse response, Student stu)
76. {
77. stuService.update(stu);
78. return "redirect:/student/all.do";
79. }
80. /**
81. * 跳转：用于跳转的过度
82. */
83. @RequestMapping(value = "/redir/{url}", method = RequestMethod.GET)
84. public String sendRedirect(HttpServletRequest request,
85. HttpServletResponse response, @PathVariable("url")
86. String url)
87. {
88. return url;
89. }
90. }

================================================ 
配置文件： 
jdbc.properties

1. jdbc.driverClassName=com.mysql.jdbc.Driver
2. jdbc.url=jdbc:mysql://localhost:3306/demo?characterEncoding=utf-8
3. jdbc.username=root
4. jdbc.password=root

servlet.xml

1. <?xml version="1.0" encoding="UTF-8"?>
2. <beans xmlns="http://www.springframework.org/schema/beans"
3. xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
4. xmlns:mvc="http://www.springframework.org/schema/mvc"
5. xmlns:context="http://www.springframework.org/schema/context"
6. xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
7. http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd
8. http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd">
9. <context:component-scan base-package="demo.controller"></context:component-scan>
10. <!-- 内部资源视图解析器 (用于支持Servlet、JSP视图解析) -->
11. <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
12. <property name="prefix" value="/WEB-INF/jsp/"/>
13. <property name="suffix" value=".jsp"/>
14. </bean>
15. <!-- 数据库连接配置文件路径及读取方式 -->
16. <bean id="propertyConfigurer"
17. class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
18. <property name="locations">
19. <list>
20. <value>classpath:jdbc.properties</value>
21. </list>
22. </property>
23. </bean>
24. <!-- 数据库连接池 -->
25. <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"
26. destroy-method="close">
27. <property name="driverClassName" value="${jdbc.driverClassName}" />
28. <property name="url" value="${jdbc.url}" />
29. <property name="username" value="${jdbc.username}" />
30. <property name="password" value="${jdbc.password}" />
31. </bean>
32. <bean id="simpleJdbcTemplate"
33. class="org.springframework.jdbc.core.simple.SimpleJdbcTemplate">
34. <constructor-arg><ref bean="dataSource"/></constructor-arg>
35. </bean>
36. <!-- spring JDBC -->
37. <bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate">
38. <property name="dataSource" ref="dataSource" />
39. </bean>
40. </beans>

applicationContext-dao.xml

1. <?xml version="1.0" encoding="UTF-8"?>
2. <!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" " http://www.springframework.org/dtd/spring-beans.dtd">
3. <beans>
4. <bean id="stuDao" class="demo.dao.impl.StudentDaoImpl">
5. <property name="simpleJdbcTemplate"
6. ref="simpleJdbcTemplate" />
7. </bean>
8. </beans>

applicationContext-service.xml

1. <?xml version="1.0" encoding="UTF-8"?>
2. <!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" " http://www.springframework.org/dtd/spring-beans.dtd">
3. <beans>
4. <bean id="stuService" class="demo.service.impl.StudentServiceImpl">
5. <property name="stuDao" ref="stuDao"/>
6. </bean>
7. </beans>

web.xml

1. <?xml version="1.0" encoding="UTF-8"?>
2. <web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee"
3. xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
4. xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
5. http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
6. <welcome-file-list>
7. <welcome-file>index.jsp</welcome-file>
8. </welcome-file-list>
9. <servlet>
10. <servlet-name>demo2</servlet-name>
11. <servlet-class>
12. org.springframework.web.servlet.DispatcherServlet
13. </servlet-class>
14. <init-param>
15. <param-name>contextConfigLocation</param-name>
16. <param-value>/WEB-INF/classes/spring/*.xml</param-value>
17. </init-param>
18. <load-on-startup>1</load-on-startup>
19. </servlet>
20. <servlet-mapping>
21. <servlet-name>demo2</servlet-name>
22. <url-pattern>*.do</url-pattern>
23. </servlet-mapping>
24. <!-- 处理乱码 -->
25. <filter>
26. <filter-name>encodingFilter</filter-name>
27. <filter-class>
28. org.springframework.web.filter.CharacterEncodingFilter
29. </filter-class>
30. <init-param>
31. <param-name>encoding</param-name>
32. <param-value>utf-8</param-value>
33. </init-param>
34. <init-param>
35. <param-name>forceEncoding</param-name>
36. <param-value>true</param-value>
37. </init-param>
38. </filter>
39. <filter-mapping>
40. <filter-name>encodingFilter</filter-name>
41. <url-pattern>/*</url-pattern>
42. </filter-mapping>
43. </web-app>

================== 
allStudent.jsp

1. <%@ page language="java" pageEncoding="utf-8"%>
2. <%@ taglib uri="http://java.sun.com/jstl/core_rt" prefix="e"%>
3. <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
4. <html>
5. <head>
6. <title>Student列表</title>
7. </head>
8. <table width="50%" border="1">
9. <tr>
10. <td>id</td>
11. <td>姓名</td>
12. <td>性别</td>
13. <td>地址</td>
14. <td>操作</td>
15. </tr>
16. <e:forEach items="${requestScope.stuList}" var="stu">
17. <tr>
18. <td>${stu.id}</td>
19. <td>${stu.name}</td>
20. <td>${stu.sex}</td>
21. <td>${stu.address}</td>
22. <td><a href="pre4Update/${stu.id}.do">修改</a>||<a href="delete/${stu.id}/${stu.name}.do">删除</a></td>
23. </tr>
24. </e:forEach>
25. </table>
26. <a href="redir/addStudent.do">添加</a>
27. <body>
28. </body>
29. </html>