Java中SSM框架实现增删改查功能代码详解

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

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

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

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 list();

}

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

 
 INSERT INTO student VALUES(#{student_id},#{name}, #{age}, #{sex}, #{birthday})
 
 


 
 delete from student where id= #{id}
 

 
 select * from student where id= #{id}
 

 
 UPDATE student SET student_id = #{student_id}, name = #{name},
 age = #{age}, sex = #{sex}, birthday = #{birthday} WHERE id = #{id}
 
 
 select * from student
 

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

package com.ssm1.service;

import java.util.List;
import com.ssm1.pojo.Student;

public interface StudentService {
 List 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

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 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

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 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

 
 
 contextConfigLocation
 classpath:applicationContext.xml
 
 
 org.springframework.web.context.ContextLoaderListener
 


 
 
 mvc-dispatcher
 org.springframework.web.servlet.DispatcherServlet
 
 
  contextConfigLocation
  classpath:springMVC.xml
 
 1
 
 
 mvc-dispatcher
 /
 
 
 CharacterEncodingFilter
 org.springframework.web.filter.CharacterEncodingFilter
 
 encoding
 utf-8
 
 
 
 CharacterEncodingFilter
 /*
 

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

 
 
 
 
 
  com.mysql.jdbc.Driver
 
 
  jdbc:mysql://localhost:3306/ssm1?characterEncoding=UTF-8

 
 
  root
 
 
  admin
 
 

 
 
 
 
 
 

 
 
 

11.在src目录下新增springMVC.xml文件

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

<%@ 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"%>







 
 

 

 
id
 
student_id
 
name
 
age
 
sex
 
birthday
 
编辑
 
删除
 
 

  
${c.id}
  
${c.student_id}
  
${c.name}
  
${c.age}
  
${c.sex}
  
${c.birthday}
  
编辑
  
删除

 
 

 

 

  学生学号：  


  学生姓名：  


  学生年纪：  


  学生性别：  


  学生生日：  


  
 
 
 

 

  
 
 

<%@ 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"%>

 



 


 

  分类名称：  


  分类名称：  


  分类名称：  


  分类名称：  


  分类名称：  


  

  
 

 
 

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

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