springmvc-210805-03---ssm整合演示

springmvc-210805-03—ssm整合演示

• pom.xml（引入相关依赖）

• web.xml（注册DispatcherServlet，Spring监听器，字符过滤器）

• dispatchServlet.xml（Springmvc配置文件）

• applicationContext.xml（spring配置文件）

• mybatis.xml（MyBatis配置文件）

• jdbc.properties

• StudentDao.java（编写dao）

• StudentDao.xml（编写dao）

• StudentService.java（编写service）

• StudentServiceImpl.java（编写service）

• StudentController.java（编写controller）

• index.jsp（主界面）

• addStudent.jsp（添加学生界面）

• result.jsp（添加学生结果页面）

• listStudent.jsp（查询学生页面）

• 我的目录结构

---

pom.xml（引入相关依赖）

<?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>com.bgy</groupId>
    <artifactId>springmvc-210805-03</artifactId>
    <version>1.0-SNAPSHOT</version>
    <packaging>war</packaging>


    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <maven.compiler.source>1.8</maven.compiler.source>
        <maven.compiler.target>1.8</maven.compiler.target>
    </properties>

    <dependencies>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.11</version>
            <scope>test</scope>
        </dependency>

        <!-- servlet依赖 -->
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>javax.servlet-api</artifactId>
            <version>3.1.0</version>
            <scope>provided</scope>
        </dependency>

        <!-- jsp依赖 -->
        <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>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>8.0.16</version>
        </dependency>
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid</artifactId>
            <version>1.1.12</version>
        </dependency>
    </dependencies>

    <build>
        <resources>
            <resource>
                <directory>src/main/java</directory><!--所在的目录-->
                <includes><!--包括目录下的.properties,.xml 文件都会扫描到-->
                    <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>

---

web.xml（注册DispatcherServlet，Spring监听器，字符过滤器）

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee
                      http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"
         version="4.0"
         metadata-complete="true">

    <!-- 注册中央调度器 -->
    <servlet>
        <servlet-name>dispatcherServlet</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>

        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:conf/dispatchServlet.xml</param-value>
        </init-param>

        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>dispatcherServlet</servlet-name>
        <url-pattern>*.do</url-pattern>
    </servlet-mapping>


    <!-- 注册spring监听器 -->
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:conf/applicationContext.xml</param-value>
    </context-param>

    <!-- 注册字符集过滤器，解决post请求中文乱码问题 -->
    <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>
        <init-param>
            <param-name>forceResponseEncoding</param-name>
            <param-value>true</param-value>
        </init-param>
        <init-param>
            <param-name>forceRequestEncoding</param-name>
            <param-value>true</param-value>
        </init-param>
    </filter>
    <filter-mapping>
        <filter-name>characterEncodingFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>

</web-app>

---

dispatchServlet.xml（Springmvc配置文件）

<?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:context="http://www.springframework.org/schema/context"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
                           http://www.springframework.org/schema/beans/spring-beans.xsd
                           http://www.springframework.org/schema/context
                           http://www.springframework.org/schema/context/spring-context.xsd
                           http://www.springframework.org/schema/mvc
                           http://www.springframework.org/schema/mvc/spring-mvc.xsd">

    <!-- springmvc配置文件，声明controller和其他web相关的对象 -->

    <context:component-scan base-package="com.bgy.controller"/>

    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/jsp/"/>
        <property name="suffix" value=".jsp"/>
    </bean>

    <!--
        注解驱动
        作用：
            1. 响应ajax，返回json
            2. 解决静态资源访问问题
    -->
    <mvc:annotation-driven/>
</beans>

---

applicationContext.xml（spring配置文件）

<?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:context="http://www.springframework.org/schema/context"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
                           http://www.springframework.org/schema/beans/spring-beans.xsd
                           http://www.springframework.org/schema/context
                           http://www.springframework.org/schema/context/spring-context.xsd">

    <!-- spring配置文件，声明service，dao，工具类等对象 -->

    <!-- 声明数据源，连接数据库 -->
    <context:property-placeholder location="classpath:conf/jdbc.properties"/>

    <!-- 声明数据源 -->
    <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource" init-method="init" destroy-method="close">
        <property name="url" value="${jdbc.url}"/>
        <property name="username" value="${jdbc.username}"/>
        <property name="password" value="${jdbc.password}"/>
    </bean>

    <!-- 配置SqlSessionFactoryBean创建SqlSessionFactory -->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"/>
        <property name="configLocation" value="classpath:conf/mybatis.xml"/>
    </bean>

    <!-- 声明mybatis扫描器，创建dao对象 -->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
        <property name="basePackage" value="com.bgy.dao"/>
    </bean>

    <!-- 声明service的注解@Service所在的包名位置 -->
    <context:component-scan base-package="com.bgy.service"/>

    <!--
        事务配置 （二选一）
            1）注解的配置
            2）AspectJ配置
    -->
</beans>

---

mybatis.xml（MyBatis配置文件）

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration
        PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>

<!--    <settings>-->
<!--        &lt;!&ndash;设置mybatis输出日志&ndash;&gt;-->
<!--        <setting name="logImpl" value="STDOUT_LOGGING"/>-->
<!--    </settings>-->
    
    <typeAliases>
        <package name="com.bgy.domain"/>
    </typeAliases>

    <environments default="development">
        <environment id="development">
            <transactionManager type="JDBC"/>
            <dataSource type="POOLED">
                <property name="driver" value="com.mysql.cj.jdbc.Driver"/>
                <property name="url" value="jdbc:mysql://localhost:3306/springmvc_test_210805_01?serverTimezone=UTC&amp;useSSL=false"/>
                <property name="username" value="root"/>
                <property name="password" value="admin"/>
            </dataSource>
        </environment>
    </environments>

    <mappers>
        <package name="com.bgy.dao"/>
    </mappers>
</configuration>

---

jdbc.properties

jdbc.driver=com.mysql.cj.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/springmvc_test_210805_01?useUnicode=true&characterEncoding=utf-8&useSSL=false&serverTimezone = GMT
jdbc.username=root
jdbc.password=admin

---

StudentDao.java（编写dao）

package com.bgy.dao;
import com.bgy.domain.Student;
import java.util.List;

public interface StudentDao {

    int insertStudent(Student student);
    List<Student> selectStudents();
}

---

StudentDao.xml（编写dao）

<?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.bgy.dao.StudentDao">

    <select id="selectStudents" resultType="com.bgy.domain.Student">
        select
            id,name,age
        from
            student
        order by
            id desc
    </select>

    <insert id="insertStudent">
        insert into
            student(name,age)
        values(#{name},#{age})
    </insert>
</mapper>

---

StudentService.java（编写service）

package com.bgy.service;
import com.bgy.domain.Student;
import java.util.List;

public interface StudentService {

    int addStudent(Student student);
    List<Student> findStudents();
}

---

StudentServiceImpl.java（编写service）

package com.bgy.service.impl;

import com.bgy.dao.StudentDao;
import com.bgy.domain.Student;
import com.bgy.service.StudentService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import java.util.List;

@Service
public class StudentServiceImpl implements StudentService {

    @Autowired
    private StudentDao studentDao;

    @Override
    public int addStudent(Student student) {
        int nums = studentDao.insertStudent(student);
        return nums;
    }

    @Override
    public List<Student> findStudents() {
        List<Student> students = studentDao.selectStudents();
        return students;
    }
}

---

StudentController.java（编写controller）

package com.bgy.controller;

import com.bgy.domain.Student;
import com.bgy.service.StudentService;
import org.springframework.stereotype.Controller;
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
@RequestMapping("/student")
public class StudentController {

    @Resource
    private StudentService service;

    @RequestMapping("/addStudent.do")
    public ModelAndView addStudent(Student student){
        ModelAndView mv = new ModelAndView();
        String tips = "注册失败";

        // 调用service处理student
        int nums = service.addStudent(student);
        if (nums > 0) {
            // 注册成功
            tips = "学生<" + student.getName() +">注册成功";
        }
            
        // 添加数据
        mv.addObject("tips",tips);
        // 指定返回页面
        mv.setViewName("result");
        return mv;
    }

    /**
     * 处理查询，响应ajax
     */
    @ResponseBody
    @RequestMapping("/queryStudent.do")
    public List<Student> queryStudent(){
        List<Student> students = service.findStudents();
        return  students;
    }
}

---

index.jsp（主界面）

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%
    String basePath = request.getScheme() + "://" +
            request.getServerName() + ":" +
            request.getServerPort() +
            request.getContextPath() + "/";
%>
<html>
<head>
    <title>ssm整合</title>
    <base href="<%=basePath%>"/>
</head>
<body>
    <table>
        <tr>
            <td><a href="addStudent.jsp">学生注册</a> </td>
        </tr>
        <tr>
            <td><a href="listStudent.jsp">浏览学生</a> </td>
        </tr>
    </table>
</body>
</html>

---

addStudent.jsp（添加学生界面）

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%
    String basePath = request.getScheme() + "://" +
                      request.getServerName() + ":" +
                      request.getServerPort() +
                      request.getContextPath() + "/";
%>
<html>
<head>
    <title>学生注册</title>
    <base href="<%=basePath%>"/>
</head>
<body>
    <div align="center">
        <form action="student/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>

---

result.jsp（添加学生结果页面）

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>注册结果页面</title>
</head>
<body>
    <span>result.jsp 结果页面</span>
    <br/>
    注册结果：${tips}
</body>
</html>

---

listStudent.jsp（查询学生页面）

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%
    String basePath = request.getScheme() + "://" +
            request.getServerName() + ":" +
            request.getServerPort() +
            request.getContextPath() + "/";
%>
<html>
<head>
    <title>查询学生</title>
    <base href="<%=basePath%>"/>
    <script type="text/javascript" src="js/jquery-3.4.1.js"></script>
    <script type="text/javascript">
        $(function(){

            // 当页面dom对象加载后，执行loadStudentData()
            loadStudentData();

            $("#btnLoader").click(function (){
                loadStudentData();
            })
        })

        function  loadStudentData(){
            $.ajax({
                url:"student/queryStudent.do",
                type:"get",
                dataType:"json",
                success:function (data){

                    // 清除旧数据
                    $("#info").html("");

                    // 添加新数据
                    $.each(data,function (i,n){
                        $("#info").append("<tr>")
                            .append("<td>"+n.id+"</td>")
                            .append("<td>"+n.name+"</td>")
                            .append("<td>"+n.age+"</td>")
                            .append("</tr>")
                    })
                }
            })
        }
    </script>
</head>
<body>
    <div align="center">
        <table>
            <thead>
                <tr>
                    <td>学号</td>
                    <td>姓名</td>
                    <td>年龄</td>
                </tr>
            </thead>
            <tbody id="info">

            </tbody>
            <input type="button" id="btnLoader" value="查询数据"/>
        </table>
    </div>
</body>
</html>

---

我的目录结构