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Java中SSM框架实现增删改查功能代码详解

时间：2020-07-22 00:10     来源/作者：FrankYu

记录一下自己第一次整合smm框架的步骤。

参考博客和网站有：我没有三颗心脏 How2J学习网站

1.数据库使用的是mySql，首先创建数据库ssm1，并创建表student

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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项目，命名为ssm1,并且导入相关的jar包。

3.建立pojo类，在这里命名为student，包名为com.ssm1.pojo

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package com.ssm1.pojo;
 
public class Student {
 private int id;
 private int student_id;
 private String name;
 private int age;
 private String sex;
 private String birthday;
 public int getId() {
 return id;
 }
 public void setId(int id) {
 this.id = id;
 }
 public int getStudent_id() {
 return student_id;
 }
 public void setStudent_id(int student_id) {
 this.student_id = student_id;
 }
 public String getName() {
 return name;
 }
 public void setName(String name) {
 this.name = name;
 }
 public int getAge() {
 return age;
 }
 public void setAge(int age) {
 this.age = age;
 }
 public String getSex() {
 return sex;
 }
 public void setSex(String sex) {
 this.sex = sex;
 }
 public String getBirthday() {
 return birthday;
 }
 public void setBirthday(String birthday) {
 this.birthday = birthday;
 }
 
 
}

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

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package com.ssm1.mapper;
 
import java.util.List;
import com.ssm1.pojo.Student;
 
public interface StudentMapper {
 public int add(Student student);
 
 public void delete(int id);
 
 public Student get(int id);
 
 public int update(Student student);
 
 public List<Student> list();
 
}

5.建立与studentMapper对应的xml文件，同样属于包com.ssm1.mapper

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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper
 PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
 "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
 
<mapper namespace="com.ssm1.mapper.StudentMapper">
 
 <insert id="add" parameterType="Student">
 INSERT INTO student VALUES(#{student_id},#{name}, #{age}, #{sex}, #{birthday})
 </insert>
 <!-- <insert id="add" parameterType="com.ssm1.pojo.Student" useGeneratedKeys="true" keyProperty="id">
  insert into student
  <trim prefix="(" suffix=")" suffixOverrides="," >
  <if test="student_id!=null">
   student_id,
  </if>
  <if test="name!=null and name!=''">
   name,
  </if>
  <if test="age!=null">
   age,
  </if>
  <if test="sex!=null and sex!=''">
   sex,
  </if>
  <if test="birthday!=null and birthday !=''">
   birthday,
  </if>
  </trim>
  <trim prefix="values (" suffix=")" suffixOverrides="," >
  <if test="student_id!=null">
   #{student_id},
  </if>
  <if test="name!=null and name!=''">
   #{name},
  </if>
  <if test="age!=null">
   #{age},
  </if>
  <if test="sex!=null and sex!=''">
   #{sex},
  </if>
  <if test="birthday!=null and birthday !=''">
   #{birthday},
  </if>
  </trim>
 </insert> -->
 
 
 <delete id="delete" parameterType="Student">
 delete from student where id= #{id}
 </delete>
 
 <select id="get" parameterType="_int" resultType="Student">
 select * from student where id= #{id}
 </select>
 
 <update id="update" parameterType="Student">
 UPDATE student SET student_id = #{student_id}, name = #{name},
 age = #{age}, sex = #{sex}, birthday = #{birthday} WHERE id = #{id}
 </update>
 <select id="list" resultType="Student">
 select * from student
 </select>
</mapper>

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

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package com.ssm1.service;
 
import java.util.List;
import com.ssm1.pojo.Student;
 
public interface StudentService {
 List<Student> list();
 void add(Student s);
 void delete(Student s);
 void update(Student s);
 Student get(int id);
}

7.建立studentServiceImpl类，实现接口，包名为com.ssm1.service

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package com.ssm1.service;
 
import java.util.List;
 
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
 
import com.ssm1.mapper.StudentMapper;
import com.ssm1.pojo.Student;
 
@Service
public class StudentServiceImpl implements StudentService {
 @Autowired
 StudentMapper studentMapper;
 
 @Override
 public List<Student> list() {
 // TODO Auto-generated method stub
 return studentMapper.list();
 }
 
 @Override
 public void add(Student s) {
 // TODO Auto-generated method stub
 studentMapper.add(s);
 }
 
 @Override
 public void delete(Student s) {
 // TODO Auto-generated method stub
 studentMapper.delete(s.getId());
 }
 
 @Override
 public void update(Student s) {
 // TODO Auto-generated method stub
 studentMapper.update(s);
 }
 
 @Override
 public Student get(int id) {
 // TODO Auto-generated method stub
 return studentMapper.get(id);
 }
 
}

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

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package com.ssm1.controller;
 
import java.util.List;
 
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;
 
import com.github.pagehelper.PageHelper;
import com.github.pagehelper.PageInfo;
import com.ssm1.pojo.Student;
import com.ssm1.service.StudentService;
import com.ssm1.util.Page;
 
@Controller
@RequestMapping("")
public class StudentController {
 @Autowired
 StudentService studentService;
 
 @RequestMapping("/index")
 public ModelAndView index(Page page) {
 ModelAndView mav = new ModelAndView();
 List<Student> cs = studentService.list();
 mav.addObject("cs", cs);
 mav.setViewName("index");
 return mav;
 }
 
 @RequestMapping(value = "addStudent", produces = "text/html; charset=utf-8")
 // @RequestMapping("addStudent")
 public ModelAndView addStudent(Student student) {
 studentService.add(student);
 ModelAndView mav = new ModelAndView("redirect:/index");
 return mav;
 }
 
 @RequestMapping("deleteStudent")
 public ModelAndView deleteStudent(Student student) {
 studentService.delete(student);
 ModelAndView mav = new ModelAndView("redirect:/index");
 return mav;
 }
 
 @RequestMapping("editStudent")
 public ModelAndView editStudent(Student student) {
 Student s=studentService.get(student.getId());
 ModelAndView mav=new ModelAndView("editStudent");
 mav.addObject("s",s);
 return mav;
 }
 
 @RequestMapping("updateStudent")
 public ModelAndView updateStudent(Student student) {
 studentService.update(student);
 ModelAndView mav=new ModelAndView("redirect:/index");
 return mav;
 
 }
}

9.在WEB-INF目录下建立web.xml

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<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xmlns="http://java.sun.com/xml/ns/javaee"
  xmlns:web="http://java.sun.com/xml/ns/javaee"
  xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" version="2.5">
 
 <!-- spring的配置文件-->
 <context-param>
 <param-name>contextConfigLocation</param-name>
 <param-value>classpath:applicationContext.xml</param-value>
 </context-param>
 <listener>
 <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
 </listener>
 
 
 <!-- spring mvc核心：分发servlet -->
 <servlet>
 <servlet-name>mvc-dispatcher</servlet-name>
 <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
 <!-- spring mvc的配置文件 -->
 <init-param>
  <param-name>contextConfigLocation</param-name>
  <param-value>classpath:springMVC.xml</param-value>
 </init-param>
 <load-on-startup>1</load-on-startup>
 </servlet>
 <servlet-mapping>
 <servlet-name>mvc-dispatcher</servlet-name>
 <url-pattern>/</url-pattern>
 </servlet-mapping>
 <filter>
 <filter-name>CharacterEncodingFilter</filter-name>
 <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
 <init-param>
 <param-name>encoding</param-name>
 <param-value>utf-8</param-value>
 </init-param>
 </filter>
 <filter-mapping>
 <filter-name>CharacterEncodingFilter</filter-name>
 <url-pattern>/*</url-pattern>
 </filter-mapping>
</web-app>

10.在src目录下新建applicationContext.xml文件，这是Spring的配置文件

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<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:aop="http://www.springframework.org/schema/aop"
 xmlns:tx="http://www.springframework.org/schema/tx" xmlns:jdbc="http://www.springframework.org/schema/jdbc"
 xmlns:context="http://www.springframework.org/schema/context"
 xmlns:mvc="http://www.springframework.org/schema/mvc"
 xsi:schemaLocation="
 http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd
 http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
 http://www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc-3.0.xsd
 http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
 http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
 http://www.springframework.org/schema/mvc <a href="http://www.springframework.org/schema/mvc/spring-mvc.xsd">">http://www.springframework.org/schema/mvc/spring-mvc.xsd">
 
</a><!-- 配置@Service包的扫描 -->
 <context:annotation-config />
 <context:component-scan base-package="com.ssm1.service" />
 <!-- 配置数据库的连接 -->
 <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
 <property name="driverClassName">
  <value>com.mysql.jdbc.Driver</value>
 </property>
 <property name="url">
  <value>jdbc:mysql://localhost:3306/ssm1?characterEncoding=UTF-8</value>
 
 </property>
 <property name="username">
  <value>root</value>
 </property>
 <property name="password">
  <value>admin</value>
 </property>
 </bean>
 
 <!-- 配置SQLSessionFactory -->
 <bean id="sqlSession" class="org.mybatis.spring.SqlSessionFactoryBean">
 <property name="typeAliasesPackage" value="com.ssm1.pojo" />
 <property name="dataSource" ref="dataSource"/>
 <property name="mapperLocations" value="classpath:com/ssm1/mapper/*.xml"/>
 </bean>
 
 <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
 <property name="basePackage" value="com.ssm1.mapper"/>
 </bean>
</beans>

11.在src目录下新增springMVC.xml文件

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<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:aop="http://www.springframework.org/schema/aop"
 xmlns:tx="http://www.springframework.org/schema/tx" xmlns:jdbc="http://www.springframework.org/schema/jdbc"
 xmlns:context="http://www.springframework.org/schema/context"
 xmlns:mvc="http://www.springframework.org/schema/mvc"
 xsi:schemaLocation="http://www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc-3.0.xsd
 http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
 http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
 http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd
 http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
 http://www.springframework.org/schema/mvc <a href="http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd"><context:annotation-config/>">http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd">
 
<context:annotation-config/>
 
</a> <context:component-scan base-package="com.ssm1.controller">
  <context:include-filter type="annotation"
  expression="org.springframework.stereotype.Controller"/>
 </context:component-scan>
 
 <mvc:annotation-driven />
 
 <mvc:default-servlet-handler />
 
 <bean
 class="org.springframework.web.servlet.view.InternalResourceViewResolver">
 <property name="viewClass"
  value="org.springframework.web.servlet.view.JstlView" />
 <property name="prefix" value="/WEB-INF/jsp/" />
 <property name="suffix" value=".jsp" />
 </bean>
</beans>

12.在WEB-INF下创建jsp目录，并创建文件index.jsp和editStudent.jsp

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<%@ page language="java" contentType="text/html; charset=UTF-8"
 pageEncoding="UTF-8" import="java.util.*"%>
 
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
 <table align='center' border='1' cellspacing='0'>
 <tr>
 <td>id</td>
 <td>student_id</td>
 <td>name</td>
 <td>age</td>
 <td>sex</td>
 <td>birthday</td>
 <td>编辑</td>
 <td>删除</td>
 </tr>
 <c:forEach items="${cs}" var="c" varStatus="st">
 <tr>
  <td>${c.id}</td>
  <td>${c.student_id}</td>
  <td>${c.name}</td>
  <td>${c.age}</td>
  <td>${c.sex}</td>
  <td>${c.birthday}</td>
  <td><a href="editStudent?id=${c.id}" rel="external nofollow" >编辑</a></td>
  <td><a href="deleteStudent?id=${c.id}" rel="external nofollow" >删除</a></td>
 
 </tr>
 </c:forEach>
</table>
 <div style="text-align:center;margin-top:40px">
 <form method="post" action="addStudent" >
  学生学号： <input name="student_id" value="" type="text"> <br><br>
  学生姓名： <input name="name" value="" type="text"> <br><br>
  学生年纪： <input name="age" value="" type="text"> <br><br>
  学生性别： <input name="sex" value="" type="text"> <br><br>
  学生生日： <input name="birthday" value="" type="text"> <br><br>
  <input type="submit" value="增加学生">
 </form>
 </div>
 <div style="text-align:center; margin-top:20px">
 <form action="${pageContext.request.contextPath }/index" method="post">
  <input value="刷新" type="submit">
 </form>
 </div>
</body>
</html>
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<%@ page language="java" contentType="text/html; charset=UTF-8"
 pageEncoding="UTF-8" import="java.util.*"%>
 
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="s"%>
 
 <div style="width:500px;margin:0px auto;text-align:center">
 
 
 <div style="text-align:center;margin-top:40px">
 
 <form method="post" action="updateStudent">
  分类名称： <input name="student_id" value="${s.student_id}" type="text"> <br><br>
  分类名称： <input name="name" value="${s.name}" type="text"> <br><br>
  分类名称： <input name="age" value="${s.age}" type="text"> <br><br>
  分类名称： <input name="sex" value="${s.sex}" type="text"> <br><br>
  分类名称： <input name="birthday" value="${s.birthday}" type="text"> <br><br>
  <input type="hidden" value="${s.id}" name="id">
 
  <input type="submit" value="修改分类">
 </form>
 
 </div>
 </div>

13.最后在tomcat上部署项目，输入路径localhost:端口号/ssm1/index即可访问

到此这篇关于Java中SSM框架实现增删改查功能代码详解的文章就介绍到这了,更多相关SSM框架实现增删改查功内容请搜索服务器之家以前的文章或继续浏览下面的相关文章希望大家以后多多支持服务器之家！

原文链接：https://www.cnblogs.com/FrankYu-/p/11389413.html

标签：
Java 增删改查 SSM框架 

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