SSM框架實現增刪查改

本文轉載自查看原文 2019-08-22 15:11 1863 JavaWeb

記錄一下自己第一次整合smm框架的步驟。

1.數據庫使用的是mySql，首先創建數據庫ssm1，並創建表student

create database ssm1;

use ssm1;
  
CREATE TABLE student(
  id int(11) NOT NULL AUTO_INCREMENT,
  student_id int(11) NOT NULL UNIQUE,
  name varchar(255) NOT NULL,
  age int(11) NOT NULL,
  sex varchar(255) NOT NULL,
  birthday date DEFAULT NULL,
  PRIMARY KEY (id)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;

2.新建java web項目，命名為ssm1,並且導入相關的jar包。

3.建立pojo類，在這里命名為student，包名為com.ssm1.pojo

 1 package com.ssm1.pojo;
 2 
 3 public class Student {
 4     private int id;
 5     private int student_id;
 6     private String name;
 7     private int age;
 8     private String sex;
 9     private String birthday;
10     public int getId() {
11         return id;
12     }
13     public void setId(int id) {
14         this.id = id;
15     }
16     public int getStudent_id() {
17         return student_id;
18     }
19     public void setStudent_id(int student_id) {
20         this.student_id = student_id;
21     }
22     public String getName() {
23         return name;
24     }
25     public void setName(String name) {
26         this.name = name;
27     }
28     public int getAge() {
29         return age;
30     }
31     public void setAge(int age) {
32         this.age = age;
33     }
34     public String getSex() {
35         return sex;
36     }
37     public void setSex(String sex) {
38         this.sex = sex;
39     }
40     public String getBirthday() {
41         return birthday;
42     }
43     public void setBirthday(String birthday) {
44         this.birthday = birthday;
45     }
46     
47     
48 }

4.建立映射器接口studentMapper，包名為com.ssm1.mapper

 1 package com.ssm1.mapper;
 2 
 3 import java.util.List;
 4 import com.ssm1.pojo.Student;
 5 
 6 public interface StudentMapper {
 7     public int add(Student student);
 8 
 9     public void delete(int id);
10 
11     public Student get(int id);
12 
13     public int update(Student student);
14 
15     public List<Student> list();
16 
17 }

5.建立與studentMapper對應的xml文件，同樣屬於包com.ssm1.mapper

 1 <?xml version="1.0" encoding="UTF-8"?>
 2 <!DOCTYPE mapper
 3     PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
 4     "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
 5 
 6 <mapper namespace="com.ssm1.mapper.StudentMapper"> 
 7     
 8       <insert id="add" parameterType="Student">
 9         INSERT INTO student VALUES(#{student_id},#{name}, #{age}, #{sex}, #{birthday}) 
10     </insert>  
11     <!-- <insert id="add" parameterType="com.ssm1.pojo.Student" useGeneratedKeys="true" keyProperty="id">
12          insert into student
13          <trim prefix="(" suffix=")" suffixOverrides="," >
14                 <if test="student_id!=null">
15                     student_id,
16                 </if>
17                 <if test="name!=null and name!=''">
18                     name,
19                 </if>
20                 <if test="age!=null">
21                     age,
22                 </if>
23                 <if test="sex!=null and sex!=''">
24                     sex,
25                 </if>
26                 <if test="birthday!=null and birthday !=''">
27                     birthday,
28                 </if>
29             </trim>
30             <trim prefix="values (" suffix=")" suffixOverrides="," >
31                 <if test="student_id!=null">
32                     #{student_id},
33                 </if>
34                 <if test="name!=null and name!=''">
35                     #{name},
36                 </if>
37                 <if test="age!=null">
38                     #{age},
39                 </if>
40                 <if test="sex!=null and sex!=''">
41                     #{sex},
42                 </if>
43                 <if test="birthday!=null and birthday !=''">
44                     #{birthday},
45                 </if>
46             </trim>
47       </insert>  -->
48         
49     
50     <delete id="delete" parameterType="Student">
51         delete from student where id= #{id}
52     </delete>
53 
54     <select id="get" parameterType="_int" resultType="Student">
55         select * from student where id= #{id}
56     </select>
57 
58     <update id="update" parameterType="Student">
59         UPDATE student SET student_id = #{student_id}, name = #{name},
60         age = #{age}, sex = #{sex}, birthday = #{birthday} WHERE id = #{id}
61     </update>
62     <select id="list" resultType="Student">
63         select * from student
64     </select>
65 </mapper>

6.建立studentService接口，包名為com.ssm1.service

 1 package com.ssm1.service;
 2 
 3 import java.util.List;
 4 import com.ssm1.pojo.Student;
 5 
 6 public interface StudentService {
 7     List<Student> list();
 8     void add(Student s);
 9     void delete(Student s);
10     void update(Student s);
11     Student get(int id);
12 }

7.建立studentServiceImpl類，實現接口，包名為com.ssm1.service

 1 package com.ssm1.service;
 2 
 3 import java.util.List;
 4 
 5 import org.springframework.beans.factory.annotation.Autowired;
 6 import org.springframework.stereotype.Service;
 7 
 8 import com.ssm1.mapper.StudentMapper;
 9 import com.ssm1.pojo.Student;
10 
11 @Service
12 public class StudentServiceImpl implements StudentService {
13     @Autowired
14     StudentMapper studentMapper;
15 
16     @Override
17     public List<Student> list() {
18         // TODO Auto-generated method stub
19         return studentMapper.list();
20     }
21 
22     @Override
23     public void add(Student s) {
24         // TODO Auto-generated method stub
25         studentMapper.add(s);
26     }
27 
28     @Override
29     public void delete(Student s) {
30         // TODO Auto-generated method stub
31         studentMapper.delete(s.getId());
32     }
33 
34     @Override
35     public void update(Student s) {
36         // TODO Auto-generated method stub
37         studentMapper.update(s);
38     }
39 
40     @Override
41     public Student get(int id) {
42         // TODO Auto-generated method stub
43         return studentMapper.get(id);
44     }
45 
46 }

8.建立studentController控制器，包名為com.ssm1.controller

 1 package com.ssm1.controller;
 2 
 3 import java.util.List;
 4 
 5 import org.springframework.beans.factory.annotation.Autowired;
 6 import org.springframework.stereotype.Controller;
 7 import org.springframework.web.bind.annotation.RequestMapping;
 8 import org.springframework.web.servlet.ModelAndView;
 9 
10 import com.github.pagehelper.PageHelper;
11 import com.github.pagehelper.PageInfo;
12 import com.ssm1.pojo.Student;
13 import com.ssm1.service.StudentService;
14 import com.ssm1.util.Page;
15 
16 @Controller
17 @RequestMapping("")
18 public class StudentController {
19     @Autowired
20     StudentService studentService;
21 
22     @RequestMapping("/index")
23     public ModelAndView index(Page page) {
24         ModelAndView mav = new ModelAndView();
25         List<Student> cs = studentService.list();
26         mav.addObject("cs", cs);
27         mav.setViewName("index");
28         return mav;
29     }
30 
31     @RequestMapping(value = "addStudent", produces = "text/html; charset=utf-8")
32     // @RequestMapping("addStudent")
33     public ModelAndView addStudent(Student student) {
34         studentService.add(student);
35         ModelAndView mav = new ModelAndView("redirect:/index");
36         return mav;
37     }
38 
39     @RequestMapping("deleteStudent")
40     public ModelAndView deleteStudent(Student student) {
41         studentService.delete(student);
42         ModelAndView mav = new ModelAndView("redirect:/index");
43         return mav;
44     }
45     
46     @RequestMapping("editStudent")
47     public ModelAndView editStudent(Student student) {
48         Student s=studentService.get(student.getId());
49         ModelAndView mav=new ModelAndView("editStudent");
50         mav.addObject("s",s);
51         return mav;
52     }
53     
54     @RequestMapping("updateStudent")
55     public ModelAndView updateStudent(Student student) {
56         studentService.update(student);
57         ModelAndView mav=new ModelAndView("redirect:/index");
58         return mav;
59         
60     }
61 }

9.在WEB-INF目錄下建立web.xml

 1 <?xml version="1.0" encoding="UTF-8"?>
 2 <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
 3          xmlns="http://java.sun.com/xml/ns/javaee" 
 4          xmlns:web="http://java.sun.com/xml/ns/javaee" 
 5          xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" version="2.5">
 6     
 7     <!-- spring的配置文件-->
 8     <context-param>
 9         <param-name>contextConfigLocation</param-name>
10         <param-value>classpath:applicationContext.xml</param-value>
11     </context-param>
12     <listener>
13         <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
14     </listener>
15     
16     
17     <!-- spring mvc核心：分發servlet -->
18     <servlet>
19         <servlet-name>mvc-dispatcher</servlet-name>
20         <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
21         <!-- spring mvc的配置文件 -->
22         <init-param>
23             <param-name>contextConfigLocation</param-name>
24             <param-value>classpath:springMVC.xml</param-value>
25         </init-param>
26         <load-on-startup>1</load-on-startup>
27     </servlet>
28     <servlet-mapping>
29         <servlet-name>mvc-dispatcher</servlet-name>
30         <url-pattern>/</url-pattern>
31     </servlet-mapping>
32     <filter>
33     <filter-name>CharacterEncodingFilter</filter-name>
34     <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
35     <init-param>
36       <param-name>encoding</param-name>
37       <param-value>utf-8</param-value>
38     </init-param>
39   </filter>
40   <filter-mapping>
41     <filter-name>CharacterEncodingFilter</filter-name>
42     <url-pattern>/*</url-pattern>
43   </filter-mapping>
44 </web-app>

10.在src目錄下新建applicationContext.xml文件，這是Spring的配置文件

 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" xmlns:aop="http://www.springframework.org/schema/aop"
 4     xmlns:tx="http://www.springframework.org/schema/tx" xmlns:jdbc="http://www.springframework.org/schema/jdbc"
 5     xmlns:context="http://www.springframework.org/schema/context"
 6     xmlns:mvc="http://www.springframework.org/schema/mvc"
 7     xsi:schemaLocation="
 8      http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd
 9      http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
10      http://www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc-3.0.xsd
11      http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
12      http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
13      http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd">
14     
15     
16     
17     <!-- 配置@Service包的掃描 -->
18    <context:annotation-config />
19     <context:component-scan base-package="com.ssm1.service" />
20     <!-- 配置數據庫的連接 -->
21     <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">  
22       <property name="driverClassName">  
23           <value>com.mysql.jdbc.Driver</value>  
24       </property>  
25       <property name="url">  
26           <value>jdbc:mysql://localhost:3306/ssm1?characterEncoding=UTF-8</value>  
27     
28       </property>  
29       <property name="username">  
30           <value>root</value>  
31       </property>  
32       <property name="password">  
33           <value>admin</value>  
34       </property>      
35     </bean>
36     
37     <!-- 配置SQLSessionFactory -->
38     <bean id="sqlSession" class="org.mybatis.spring.SqlSessionFactoryBean">
39         <property name="typeAliasesPackage" value="com.ssm1.pojo" />
40         <property name="dataSource" ref="dataSource"/>
41         <property name="mapperLocations" value="classpath:com/ssm1/mapper/*.xml"/> 
42     </bean>
43 
44     <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
45         <property name="basePackage" value="com.ssm1.mapper"/>
46     </bean>
47 
48 
49 
50 </beans>

11.在src目錄下新增springMVC.xml文件

 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" xmlns:aop="http://www.springframework.org/schema/aop"
 4     xmlns:tx="http://www.springframework.org/schema/tx" xmlns:jdbc="http://www.springframework.org/schema/jdbc"
 5     xmlns:context="http://www.springframework.org/schema/context"
 6     xmlns:mvc="http://www.springframework.org/schema/mvc"
 7     xsi:schemaLocation="http://www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc-3.0.xsd
 8         http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
 9         http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
10         http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd
11         http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd 
12         http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd">
13 
14 
15 
16     <context:annotation-config/>
17 
18     <context:component-scan base-package="com.ssm1.controller">
19           <context:include-filter type="annotation" 
20           expression="org.springframework.stereotype.Controller"/>
21     </context:component-scan>
22 
23     <mvc:annotation-driven />
24     
25     <mvc:default-servlet-handler />
26 
27 
28     <bean
29         class="org.springframework.web.servlet.view.InternalResourceViewResolver">
30         <property name="viewClass"
31             value="org.springframework.web.servlet.view.JstlView" />
32         <property name="prefix" value="/WEB-INF/jsp/" />
33         <property name="suffix" value=".jsp" />
34     </bean>
35 </beans>

12.在WEB-INF下創建jsp目錄，並創建文件index.jsp和editStudent.jsp

 1 <%@ page language="java" contentType="text/html; charset=UTF-8"
 2     pageEncoding="UTF-8" import="java.util.*"%>
 3   
 4 <%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
 5 <!DOCTYPE html>
 6 <html>
 7 <head>
 8 <meta charset="UTF-8">
 9 <title>Insert title here</title>
10 </head>
11 <body>
12     <table align='center' border='1' cellspacing='0'>
13     <tr>
14         <td>id</td>
15         <td>student_id</td>
16         <td>name</td>
17         <td>age</td>
18         <td>sex</td>
19         <td>birthday</td>
20         <td>編輯</td>
21         <td>刪除</td>
22     </tr>
23     <c:forEach items="${cs}" var="c" varStatus="st">
24         <tr>
25             <td>${c.id}</td>
26             <td>${c.student_id}</td>
27             <td>${c.name}</td>
28             <td>${c.age}</td>
29             <td>${c.sex}</td>
30             <td>${c.birthday}</td>
31             <td><a href="editStudent?id=${c.id}">編輯</a></td>
32             <td><a href="deleteStudent?id=${c.id}">刪除</a></td>
33                
34         </tr>
35     </c:forEach>
36 </table>
37     <div style="text-align:center;margin-top:40px">
38         <form method="post" action="addStudent"  >
39             學生學號： <input name="student_id" value="" type="text"> <br><br>
40             學生姓名： <input name="name" value="" type="text"> <br><br>
41             學生年紀： <input name="age" value="" type="text"> <br><br>
42             學生性別： <input name="sex" value="" type="text"> <br><br>
43             學生生日： <input name="birthday" value="" type="text"> <br><br>
44             <input type="submit" value="增加學生">
45         </form>
46     </div>
47     <div style="text-align:center; margin-top:20px">
48         <form action="${pageContext.request.contextPath }/index" method="post">
49             <input value="刷新" type="submit">
50         </form>
51     </div>
52 </body>
53 </html>

 1 <%@ page language="java" contentType="text/html; charset=UTF-8"
 2     pageEncoding="UTF-8" import="java.util.*"%>
 3  
 4 <%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="s"%>
 5  
 6  <div style="width:500px;margin:0px auto;text-align:center">
 7     
 8     
 9     <div style="text-align:center;margin-top:40px">
10         
11         <form method="post" action="updateStudent">
12             分類名稱： <input name="student_id" value="${s.student_id}" type="text"> <br><br>
13             分類名稱： <input name="name" value="${s.name}" type="text"> <br><br>
14             分類名稱： <input name="age" value="${s.age}" type="text"> <br><br>
15             分類名稱： <input name="sex" value="${s.sex}" type="text"> <br><br>
16             分類名稱： <input name="birthday" value="${s.birthday}" type="text"> <br><br>
17             <input type="hidden" value="${s.id}" name="id">
18             
19             <input type="submit" value="修改分類">
20         </form>
21 
22     </div>    
23  </div>

13.最后在tomcat上部署項目，輸入路徑localhost:端口號/ssm1/index即可訪問

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