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[SSM笔记]多个bean的导入配置

十七画生
2022-09-27 / 1 评论 / 3 点赞 / 1,344 阅读 / 2,485 字 / 正在检测是否收录...
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思路

将dao层和service作为bean放入全局bean(spring-application.xml),在service层中调用dao层方法,测试直接调用全局bean,直接调用service

maven项目目录结构

image-1664278360617

pro.xml

    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.11</version>
      <scope>test</scope>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-web</artifactId>
      <version>5.2.3.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-webmvc</artifactId>
      <version>5.2.3.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-context</artifactId>
      <version>5.2.3.RELEASE</version>
    </dependency>

    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-test</artifactId>
      <version>5.2.3.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-jdbc</artifactId>
      <version>5.2.3.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.aspectj</groupId>
      <artifactId>aspectjweaver</artifactId>
      <version>1.8.9</version>
    </dependency>
    <!--测试-->
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.11</version>
      <scope>test</scope>
    </dependency>
    <!--日志-->
    <dependency>
      <groupId>org.slf4j</groupId>
      <artifactId>slf4j-log4j12</artifactId>
      <version>1.7.21</version>
    </dependency>
    <!--J2EE-->
    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>javax.servlet-api</artifactId>
      <version>3.1.0</version>
    </dependency>
    <dependency>
      <groupId>javax.servlet.jsp</groupId>
      <artifactId>jsp-api</artifactId>
      <version>2.2</version>
    </dependency>
    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>jstl</artifactId>
      <version>1.2</version>
    </dependency>
    <!--mysql驱动包-->
    <dependency>
      <groupId>mysql</groupId>
      <artifactId>mysql-connector-java</artifactId>
      <version>8.0.22</version>
    </dependency>

    <!-- Fastjoson JSON处理工具 --><!-- TODO:gai -->
    <dependency>
      <groupId>com.alibaba</groupId>
      <artifactId>fastjson</artifactId>
      <version>1.2.78</version>
    </dependency>

    <!-- 文件上传下载-->
    <dependency>
      <groupId>org.apache.commons</groupId>
      <artifactId>commons-lang3</artifactId>
      <version>3.4</version>
    </dependency>
    <dependency>
      <groupId>commons-io</groupId>
      <artifactId>commons-io</artifactId>
      <version>2.4</version>
    </dependency>

    <dependency>
      <groupId>commons-fileupload</groupId>
      <artifactId>commons-fileupload</artifactId>
      <version>1.3.1</version>
    </dependency>

    <dependency>
      <groupId>org.projectlombok</groupId>
      <artifactId>lombok</artifactId>
      <version>1.18.22</version>
      <scope>provided</scope>
    </dependency>


    <!-- 数据校验 -->
    <dependency>
      <groupId>javax.validation</groupId>
      <artifactId>validation-api</artifactId>
      <version>1.1.0.Final</version>
    </dependency>
    <dependency>
      <groupId>org.jboss.logging</groupId>
      <artifactId>jboss-logging</artifactId>
      <version>3.1.0.CR2</version>
    </dependency>
    <dependency>
      <groupId>org.hibernate</groupId>
      <artifactId>hibernate-validator</artifactId>
      <version>5.1.0.Final</version>
    </dependency>

    <!-- @ResponesBody的新解决方案-jackson包 -->
    <dependency>
      <groupId>com.fasterxml.jackson.core</groupId>
      <artifactId>jackson-core</artifactId>
      <version>2.12.3</version>
    </dependency>
    <dependency>
      <groupId>com.fasterxml.jackson.core</groupId>
      <artifactId>jackson-databind</artifactId>
      <version>2.12.3</version>
    </dependency>
    <!-- Swagger2 - fasterxml -->
    <dependency>
      <groupId>com.fasterxml.jackson.core</groupId>
      <artifactId>jackson-annotations</artifactId>
      <version>2.12.3</version>
    </dependency>
    <dependency>
      <groupId>com.fasterxml</groupId>
      <artifactId>classmate</artifactId>
      <version>1.5.1</version>
    </dependency>



    <!-- mybatis核心包 -->
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis</artifactId>
      <version>3.5.7</version>
    </dependency>
    <!-- mybatis/spring包 -->
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis-spring</artifactId>
      <version>1.3.0</version>
    </dependency>

    <!-- 阿里的druid连接池 -->
    <dependency>
      <groupId>com.alibaba</groupId>
      <artifactId>druid</artifactId>
      <version>1.2.8</version>
      <scope>compile</scope>
    </dependency>

    <!--日志-->
    <dependency>
      <groupId>log4j</groupId>
      <artifactId>log4j</artifactId>
      <version>1.2.17</version>
    </dependency>
    <dependency>
      <groupId>commons-logging</groupId>
      <artifactId>commons-logging</artifactId>
      <version>1.2</version>
    </dependency>

    <!--swagger-->
    <dependency>
      <groupId>io.springfox</groupId>
      <artifactId>springfox-swagger2</artifactId>
      <version>2.6.1</version>
    </dependency>
    <dependency>
      <groupId>io.springfox</groupId>
      <artifactId>springfox-swagger-ui</artifactId>
      <version>2.6.1</version>
    </dependency>

    <!-- github分页 -->
    <dependency>
      <groupId>com.github.pagehelper</groupId>
      <artifactId>pagehelper</artifactId>
      <version>4.2.1</version>
    </dependency>

jdbc.properties

#url
driver=com.mysql.cj.jdbc.Driver

#mysqlµÄjdbcÁ¬½ÓµØÖ·
url=jdbc:mysql://localhost:3308/school?useUnicode=true&characterEncoding=UTF-8&serverTimezone=GMT%2b8

#mysqlÊý¾Ý¿âµÄÓû§Ãû
user=root

#mysqlÊý¾Ý¿âµÄÃÜÂë
pwd=root

mybatis.xml

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


    <!--加载配置-->
    <!--
    ignore-unresolvable为true时,配置文件${}找不到对应占位符的值,直接赋值'${}'
    -->
    <context:property-placeholder location="classpath:jdbc.properties" ignore-unresolvable="true"/>

    <!--配置数据源druid-->
    <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource">
        <!--driverClassName可以不写,智能匹配-->
        <property name="driverClassName" value="${driver}" />
        <property name="url" value="${url}" />
        <property name="username" value="${user}" />
        <property name="password" value="${pwd}" />
    </bean>
    <!--整合MyBatis-->
    <!-- 配置 SqlSessionFactory -->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <!--衔接数据源,目前使用的是数据库连接池-->
        <property name="dataSource" ref="dataSource" />
        <property name="mapperLocations" value="classpath:mapper/*.xml"/>
    </bean>
    <!-- 配置Spring整合MyBatis,扫描包 -->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <!--注册MyBatis的映射文件-->
        <property name="basePackage" value="www.it.cast.dao" />
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory" />
    </bean>

    <!--使用sqlSessionTemplate 将接口和实现的xml相对应-->
    <bean id="sqlSessionTemplate" class="org.mybatis.spring.SqlSessionTemplate">
        <constructor-arg index="0" ref="sqlSessionFactory"/>
    </bean>

</beans>

spring-service.xml

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


    <!--加载配置-->
    <!--
    ignore-unresolvable为true时,配置文件${}找不到对应占位符的值,直接赋值'${}'
    -->
    <context:component-scan base-package="www.it.cast.service"/>
</beans>

spring-application.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
       http://www.springframework.org/schema/beans/spring-beans.xsd">

    <!--导入bean-->
    <import resource="mybatis.xml"/>
    <import resource="spring-service.xml"/>
</beans>

StudentMapper.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="www.it.cast.dao.StudentMapper">
    <!--  这里的id是我们之前在接口定义的方法名, resultType是指返回结果的类型我们查询的是用户数据所以返回接口是User -->
    <resultMap id="ResultMap" type="www.it.cast.entity.Student">
        <id column="id" jdbcType="INTEGER" property="id"/>
        <result column="student_name" jdbcType="VARCHAR" property="studentName"/>
        <result column="class_id" jdbcType="VARCHAR" property="classId"/>
        <result column="teacher_id" jdbcType="INTEGER" property="teacherId"/>
    </resultMap>
    <select id="getStudents" resultMap="ResultMap">
        select * from student
    </select>
    <!--  根据id删除方法-->
    <delete id="delStudents" parameterType="java.lang.Integer">
        delete from student where id = #{id}
    </delete>
    <!--  修改方法-->
    <update id="updStudents" parameterType="www.it.cast.entity.Student">
        update student set student_name = #{studentName},class_id = #{classId},teacher_id=#{teacherId} where id = #{id};
    </update>
    <!--  添加方法-->
    <insert id="addStudents" parameterType="www.it.cast.entity.Student">
        insert into student (student_name,class_id,teacher_id) values (#{studentName},#{classId},#{teacherId})
    </insert>
</mapper>

实体类

package www.it.cast.entity;


public class Student {

  private Integer id;
  private String studentName;
  private String classId;
  private Integer teacherId;


  public Integer getId() {
    return id;
  }

  public void setId(Integer id) {
    this.id = id;
  }


  public String getStudentName() {
    return studentName;
  }

  public void setStudentName(String studentName) {
    this.studentName = studentName;
  }


  public String getClassId() {
    return classId;
  }

  public void setClassId(String classId) {
    this.classId = classId;
  }


  public Integer getTeacherId() {
    return teacherId;
  }

  public void setTeacherId(Integer teacherId) {
    this.teacherId = teacherId;
  }


  public Student() {
  }

  @Override
  public String toString() {
    return "Student{" +
            "id=" + id +
            ", studentName='" + studentName + '\'' +
            ", classId='" + classId + '\'' +
            ", teacherId=" + teacherId +
            '}';
  }

  public Student(Integer id, String studentName, String classId, Integer teacherId) {
    this.id = id;
    this.studentName = studentName;
    this.classId = classId;
    this.teacherId = teacherId;
  }
  public Student(String studentName, String classId, Integer teacherId) {
    this.studentName = studentName;
    this.classId = classId;
    this.teacherId = teacherId;
  }
}

dao层

package www.it.cast.dao;

import org.mapstruct.Mapper;
import www.it.cast.entity.Student;

import java.util.List;

@Mapper
public interface StudentMapper {
    //查询所有
    List<Student> getStudents();
    //删除方法
    int delStudents(Integer id);

    //修改方法
    int updStudents(Student student);

    //添加方法
    int addStudents(Student student);
}

service层

package www.it.cast.service;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import www.it.cast.dao.StudentMapper;
import www.it.cast.entity.Student;

import java.util.List;

@Service(value = "studentService")
public class StudentService {

    @Autowired
    private StudentMapper studentMapper;

    public List<Student> getStudent() {

        return studentMapper.getStudents();
    }

    public String getStudentName() {
        return "张三";
    }
}


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