使用ssm框架实现用户注册与查询的简单demo

系统管理员 2023-09-24 13:32 133阅读 0赞

### 这里我们分一下步邹进行构建 ###

目录结构如下所示

![77da5197d4724aacb199ae3d5bb1a903.png][]

首先创建项目，并加入pom.xml依赖

<?xml version="1.0" encoding="UTF-8"?>
    
    <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
      xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
      <modelVersion>4.0.0</modelVersion>
    
      <groupId>org.example</groupId>
      <artifactId>demo-regiser-student</artifactId>
      <version>1.0-SNAPSHOT</version>
      <packaging>war</packaging>
    
      <name>demo-regiser-student Maven Webapp</name>
      
      <url>http://www.example.com</url>
    
      <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <maven.compiler.source>1.7</maven.compiler.source>
        <maven.compiler.target>1.7</maven.compiler.target>
      </properties>
    
      <dependencies>
        <dependency>
          <groupId>junit</groupId>
          <artifactId>junit</artifactId>
          <version>4.11</version>
          <scope>test</scope>
        </dependency>
        
        <dependency>
          <groupId>javax.servlet</groupId>
          <artifactId>javax.servlet-api</artifactId>
          <version>3.1.0</version>
          <scope>provided</scope>
        </dependency>
        
        <dependency>
          <groupId>javax.servlet.jsp</groupId>
          <artifactId>jsp-api</artifactId>
          <version>2.2.1-b03</version>
          <scope>provided</scope>
        </dependency>
        
        <dependency>
          <groupId>org.springframework</groupId>
          <artifactId>spring-webmvc</artifactId>
          <version>5.2.5.RELEASE</version>
        </dependency>
        
        <dependency>
          <groupId>org.springframework</groupId>
          <artifactId>spring-tx</artifactId>
          <version>5.2.5.RELEASE</version>
        </dependency>
        <dependency>
          <groupId>org.springframework</groupId>
          <artifactId>spring-jdbc</artifactId>
          <version>5.2.5.RELEASE</version>
        </dependency>
        
        <dependency>
          <groupId>org.springframework</groupId>
          <artifactId>spring-aspects</artifactId>
          <version>5.2.5.RELEASE</version>
        </dependency>
        
        <dependency>
          <groupId>com.fasterxml.jackson.core</groupId>
          <artifactId>jackson-core</artifactId>
          <version>2.9.0</version>
        </dependency>
        <dependency>
          <groupId>com.fasterxml.jackson.core</groupId>
          <artifactId>jackson-databind</artifactId>
          <version>2.9.0</version>
        </dependency>
        
        <dependency>
          <groupId>org.mybatis</groupId>
          <artifactId>mybatis-spring</artifactId>
          <version>1.3.1</version>
        </dependency>
        
        <dependency>
          <groupId>org.mybatis</groupId>
          <artifactId>mybatis</artifactId>
          <version>3.5.1</version>
        </dependency>
        
        <dependency>
          <groupId>mysql</groupId>
          <artifactId>mysql-connector-java</artifactId>
          <version>5.1.9</version>
        </dependency>
        
        <dependency>
        <groupId>com.alibaba</groupId>
        <artifactId>druid</artifactId>
          <version>1.1.12</version>
        </dependency>
        
        <dependency>
          <groupId>javax.annotation</groupId>
          <artifactId>javax.annotation-api</artifactId>
          <version>1.3.1</version>
        </dependency>
        <dependency>
          <groupId>commons-fileupload</groupId>
          <artifactId>commons-fileupload</artifactId>
          <version>1.3.1</version>
        </dependency>
    
      </dependencies>
    
    
      <build>
        <finalName>demo-regiser-student</finalName>
        <pluginManagement>
          <plugins>
            <plugin>
              <artifactId>maven-clean-plugin</artifactId>
              <version>3.1.0</version>
            </plugin>
            
            <plugin>
              <artifactId>maven-resources-plugin</artifactId>
              <version>3.0.2</version>
            </plugin>
            <plugin>
              <artifactId>maven-compiler-plugin</artifactId>
              <version>3.8.0</version>
            </plugin>
            <plugin>
              <artifactId>maven-surefire-plugin</artifactId>
              <version>2.22.1</version>
            </plugin>
            <plugin>
              <artifactId>maven-war-plugin</artifactId>
              <version>3.2.2</version>
            </plugin>
            <plugin>
              <artifactId>maven-install-plugin</artifactId>
              <version>2.5.2</version>
            </plugin>
            <plugin>
              <artifactId>maven-deploy-plugin</artifactId>
              <version>2.8.2</version>
            </plugin>
          </plugins>
        </pluginManagement>
        <resources>
          <resource>
            <directory>src/main/java</directory>
            <includes>
              <include>**/*.properties</include>
              <include>**/*.xml</include>
            </includes>
            <filtering>false</filtering>
          </resource>
        </resources>
        <plugins>
          <plugin>
            <artifactId>maven-compiler-plugin</artifactId>
            <version>3.1</version>
            <configuration>
              <source>1.8</source>
              <target>1.8</target>
            </configuration>
          </plugin>
        </plugins>
      </build>
    </project>

引入依赖之后我们就可以使用，接下来在数据库user表 表中的字段为id ,name,age这里我把id设置为主键，并且设置为自动增长。

![8ff90d8abc574b169fc8df5adc49db59.png][]

接下来就是将我们的配置文件进行配置一一下，resources目录下：

![812df6fcd5a0405397025f8b8fc17f66.png][]

因为配置文件很多，具体的配置信息大家可以看博主的上一边文章

连接如下：[(4条消息) org.springframework.beans.factory.BeanCreationException\_灰灰的996的博客-CSDN博客][4_ org.springframework.beans.factory.BeanCreationException_996_-CSDN]

完成配置文件之后就是我们的domain层，dao层，service层的代码填写

domain层

package org.example.domain;
    
    public class Student {
        private  String name;
    
        private  int age;
        private  Integer 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 Integer getId() {
            return id;
        }
    
        public void setId(Integer id) {
            this.id = id;
        }
    
        @Override
        public String toString() {
            return "Student{" +
                    "name='" + name + '\'' +
    
                    ", age=" + age +
                    ", id=" + id +
                    '}';
        }
    }

dao层代码

package org.example.dao;
    
    import org.example.domain.Student;
    
    import java.util.List;
    
    public interface StudentDao {
        int insertStudent(Student student);
        List<Student> selectAllStudent();
    }

mapper文件 StudentDao.xml

<?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="org.example.dao.StudentDao">
    
        <select id="selectAllStudent" resultType="org.example.domain.Student">
    
    select id,name,age from student
        </select>
    <insert id="insertStudent">
        insert into student(name,age) values (#{name},#{age})
    </insert>
    </mapper>

service层：

package org.example.service;
    
    import org.example.domain.Student;
    import org.springframework.stereotype.Service;
    
    import java.util.List;
    
    public interface StudentService {
        int addStudent(Student student);
        List<Student> queryStudent();
    
    }

实现类;

package org.example.service.impl;
    
    import org.example.dao.StudentDao;
    import org.example.domain.Student;
    import org.example.service.StudentService;
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.stereotype.Service;
    
    import javax.annotation.Resource;
    import java.util.List;
    @Service
    public class StudentServiceImpl implements StudentService {
    
      @Resource
        private StudentDao studentDao;
    
    
    
        @Override
        public int addStudent(Student student) {
    
            return studentDao.insertStudent(student);
        }
    
        @Override
        public List<Student> queryStudent() {
    
            return studentDao.selectAllStudent();
        }
    
        public StudentDao getStudentDao() {
            return studentDao;
        }
    
        public void setStudentDao(StudentDao studentDao) {
            this.studentDao = studentDao;
        }
    
        @Override
        public String toString() {
            return "StudentServiceImpl{" +
                    "studentDao=" + studentDao +
                    '}';
        }
    }

controller层;

package org.example.controller;
    
    import org.example.domain.Student;
    import org.example.service.StudentService;
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.context.annotation.ImportResource;
    import org.springframework.stereotype.Controller;
    import org.springframework.web.bind.annotation.PostMapping;
    import org.springframework.web.bind.annotation.RequestMapping;
    import org.springframework.web.bind.annotation.ResponseBody;
    import org.springframework.web.servlet.ModelAndView;
    
    import javax.annotation.Resource;
    import java.util.List;
    
    @Controller
    
    public class MyController {
    @Resource
        private StudentService studentService;
    @RequestMapping("/addStudent.do")
        public ModelAndView addStudent(Student student){
            ModelAndView mv=new ModelAndView();
            int rows=studentService.addStudent(student);
        System.out.println(rows);
           if (rows>0){
               mv.addObject("myname",student.getName());
              mv.addObject("myage",student.getAge());
               mv.addObject("msg","注册成功");
              mv.setViewName("success");
            }else {
               mv.addObject("myname",student.getName());
               mv.addObject("myage",student.getAge());
               mv.addObject("msg","注册失败");
                mv.setViewName("fail");
    
    
          }
    
            return  mv;
    
            /*相应ajax输出数据*/
    
        }
        @RequestMapping("/queryStudent.do")
        @ResponseBody
        public List<Student> queryStudent(){
        List<Student> students=studentService.queryStudent();
        return students;
        }
    
        public StudentService getStudentService() {
            return studentService;
        }
    
        public void setStudentService(StudentService studentService) {
            this.studentService = studentService;
        }
    
        @Override
        public String toString() {
            return "MyController{" +
                    "studentService=" + studentService +
                    '}';
        }
    
    }

到此位置就是后端部署，接下来就是前端jsp文件的编写

代码目录如下· ：

![61ac91828c1844f3af88c84e586b3b87.png][]

images包下大家只需要去保存一个.jpg结尾的图片就可以，这个是为了前端页面的装饰效果。美化页面：

js包跟listStudent.jsp大家可以不用去配置，这个是为了相应ajax使用的；

index.jsp 加载页面

<%
        String basePath = request.getScheme() + "://" +
                request.getServerName() + ":" + request.getServerPort() +
                request.getContextPath() + "/";
    %>
    指定 base 标签
    <%@ page contentType="text/html;charset=UTF-8" language="java" %>
    
    <head>
        <base href="<%=basePath%>">
        <title>Title</title>
    </head>
    <div align="center">
        <p> SSM整合开发--实现student表的操作</p>
        <img src="images/ssm.jpg">
        <table cellpadding="0" cellspacing="0">
            <tr>
                <td><a href="addStudent.jsp">注册学生</a>
    
                </td>
            </tr>
            <tr>
                <td>
                    <a href="listStudent.jsp">查询学生</a>
                </td>
            </tr>
        </table>
    </div>
    <body>
    
    </body>

addStudent.jsp 用来注册学生的页面

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
    <html>
    <head>
        <title>Title</title>
    </head>
    <body>
    <div align="center">
        <p>注册学生页面</p>
        <form action="addStudent.do" method="post">
            <table>
                <tr>
                    <td>
                        姓名：
                    </td>
                    <td><input type="text" name="name">
    
                    </td>
    
                </tr>
                <tr>
                    <td>
                        年龄：
                    </td>
                    <td><input type="text" name="age">
    
                    </td>
    
                </tr>
                <tr>
                    <td>
                         
                    </td>
                    <td>
                        <input type="submit" value="注册">
                    </td>
    
    
                </tr>
            </table>
        </form>
    </div>
    </body>
    </html>

fail.jsp 用来显示注册失败的页面；

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
    <html>
    <head>
        <title>Title</title>
    </head>
    <body>
    name:${myname}
    age:${myage}
    注册结果为==${msg}
    </body>
    </html>

success.jsp 用来显示加载成功的页面

[77da5197d4724aacb199ae3d5bb1a903.png]: https://img-blog.csdnimg.cn/77da5197d4724aacb199ae3d5bb1a903.png
[8ff90d8abc574b169fc8df5adc49db59.png]: https://img-blog.csdnimg.cn/8ff90d8abc574b169fc8df5adc49db59.png
[812df6fcd5a0405397025f8b8fc17f66.png]: https://img-blog.csdnimg.cn/812df6fcd5a0405397025f8b8fc17f66.png
[4_ org.springframework.beans.factory.BeanCreationException_996_-CSDN]: https://blog.csdn.net/m0_73379880/article/details/127490582?spm=1001.2014.3001.5501
[61ac91828c1844f3af88c84e586b3b87.png]: https://img-blog.csdnimg.cn/61ac91828c1844f3af88c84e586b3b87.png