Day06_08_SpringBoot教程之实现SSM整合

缺乏、安全感 2024-01-15 06:21 45阅读 0赞

## SpringBoot中实现SSM整合 ##

Spring Boot可以帮助我们快速搭建一个SSM框架环境,那么建立Spring boot项目之后怎样具体和SSM整合呢?

以下给大家介绍在SpringBoot项目中进行SSM整合的两种方式:

*  1️⃣. XML方式;
 *  2️⃣. 注解两种方式.

### 一. 在SpringBoot中以XML方式进行SSM整合 ###

#### 1. 创建一个新的module--boot\_ssm ####

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3N5YzAwMDY2Ng_size_16_color_FFFFFF_t_70][]

#### 2. 在pom文件中添加相关依赖 ####

<dependencies>
        
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
    
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-jdbc</artifactId>
        </dependency>
    
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.0.7</version>
        </dependency>
    
        
        <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
            <version>1.3.1</version>
        </dependency>
    
        
        <dependency>
            <groupId>com.github.pagehelper</groupId>
            <artifactId>pagehelper-spring-boot-starter</artifactId>
            <version>1.2.3</version>
        </dependency>
    
        
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
        </dependency>
    </dependencies>

同时在该pom.xml文件中添加对xml文件的配置

#### 3. 配置application.yml ####

#数据源配置
    spring.datasource.username=root
    spring.datasource.password=syc
    spring.datasource.url=jdbc:mysql://localhost:3306/db01?useUnicode=true&characterEncoding=utf8&serverTimezone=GMT%2B8&useSSL=false
    spring.datasource.driver-class-name=com.mysql.jdbc.Driver
    
    #mybatis配置
    mybatis.type-aliases-package=com.syc.boot.domain
    mybatis.mapper-locations=classpath:com/syc/boot/domain/*.xml

#### 4. 创建数据库以及student表 ####

#数据库脚本
    CREATE TABLE student (id INTEGER(20) PRIMARY KEY AUTO_INCREMENT NOT NULL,NAME VARCHAR(30),sex VARCHAR(4))student;
    
    #添加数据语句
    INSERT INTO student (NAME,sex) VALUES('三胖','男');
    INSERT INTO student (NAME,sex) VALUES('特没谱','女');

#### 5. 创建pojo实体对象 ####

package com.syc.boot.domain;
    
    import lombok.AllArgsConstructor;
    import lombok.Data;
    import lombok.NoArgsConstructor;
    
    @Data
    @NoArgsConstructor
    @AllArgsConstructor
    public class Student {
    
        private Integer id;
    
        private String name;
    
        private String sex;
    
    }

#### 6. 编写mapper接口及对应的xml文件 ####

StudentMapper接口类

package com.syc.boot.mapper;
    import com.syc.boot.domain.Student;
    import org.apache.ibatis.annotations.Param;
    import java.util.List;
    
    public interface StudentMapper {
    
        List<Student> getAll();
    
        Student getById(@Param("id") int id);
    
    }

StudentMapper.xml文件

<?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.syc.boot.mapper.StudentMapper">
    
        <select id="getAll" resultType="com.syc.boot.domain.Student">
            SELECT * FROM student
        </select>
    
        <select id="getById" resultType="com.syc.boot.domain.Student">
            SELECT * FROM student
            where id=#{id}
        </select>
    
    </mapper>

#### 7. 编写service及其实现类 ####

StudentService接口

package com.syc.boot.service;
    import com.syc.boot.domain.Student;
    import java.util.List;
    
    public interface StudentService {
    
        /*分页参数*/
        List<Student> getAll(Integer pageNum,Integer pageSize);
    
        Student get(Integer id);
    }

StudentServiceImpl实现类

package com.syc.boot.service.impl;
    import com.github.pagehelper.PageHelper;
    import com.github.pagehelper.PageInfo;
    import com.syc.boot.domain.Student;
    import com.syc.boot.mapper.StudentMapper;
    import com.syc.boot.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 StudentMapper studentMapper;
    
        @Override
        public List<Student> getAll(Integer pageNum,Integer pageSize) {
            //在查询之前设置分页,利用Mybatis的分页插件实现分页
            PageHelper.startPage(pageNum,pageSize);
           
            List<Student> list = studentMapper.getAll();
            PageInfo<Student> info=new PageInfo<>(list);
            return info.getList();
        }
    
        @Override
        public Student get(Integer id) {
            return studentMapper.getById(id);
        }
    }

#### 8. 编写Controller接口 ####

package com.syc.boot.web;
    import com.syc.boot.domain.Student;
    import com.syc.boot.service.StudentService;
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.stereotype.Controller;
    import org.springframework.web.bind.annotation.*;
    import java.util.List;
    
    @RestController
    @RequestMapping("/stu")
    public class StudentController {
    
        @Autowired
        private StudentService studentService;
    
        @RequestMapping(value = "/find", method = RequestMethod.GET)
        public List<Student> find(@RequestParam(name = "pageNum",required = false,defaultValue = "1") Integer pageNum,@RequestParam(name="pageSize" ,required = false,defaultValue = "20") Integer pageSize) {
            return studentService.getAll(pageNum,pageSize);
        }
    
        @RequestMapping(value = "/{id}", method = RequestMethod.GET)
        public Student get(@PathVariable(name = "id") Integer id) {
            return studentService.get(id);
        }
    }

#### 9. 编写程序入口 ####

package com.syc.boot;
    import org.mybatis.spring.annotation.MapperScan;
    import org.springframework.boot.SpringApplication;
    import org.springframework.boot.autoconfigure.SpringBootApplication;
    
    @MapperScan("com.syc.boot.mapper")  //扫描Mybatis接口文件
    @SpringBootApplication
    public class WebApplication {
    
        public static void main(String[] args) {
            SpringApplication.run(WebApplication.class, args);
        }
    }

注意:在应用程序入口类上配置@MapperScan("com.syc.boot.mapper"),扫描mapper接口文件所在包!

#### 10. 测试ssm整合及分页效果 ####

不分页查询全部

![Image 1][]![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3N5YzAwMDY2Ng_size_16_color_FFFFFF_t_70 1][]

根据id查询某个对象

![Image 1][]![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3N5YzAwMDY2Ng_size_16_color_FFFFFF_t_70 2][]

分页查询

![Image 1][]![20190531164623723.png][]

### 二. 在SpringBoot中以注解方式进行SSM整合 ###

#### 1. 在StudentMapper类中添加注解 ####

以注解方式在SpringBoot中整合ssm时,可以把StudentMapper.xml文件删除掉,但是也得在pom.xml文件中允许Java文件的xml可编译,也就是仍然需要配置如下项:

#### 2. 修改application.properties文件 ####

#### 3. 编写StudentMapper接口方法 ####

package com.syc.boot.mapper;
    import com.syc.boot.domain.Student;
    import org.apache.ibatis.annotations.Param;
    import org.apache.ibatis.annotations.Select;
    import java.util.List;
    
    public interface StudentMapper {
    
        /*以注解的方式实现ssm整合*/
    
        @Select("SELECT * FROM student")
        List<Student> getAll();
    
        @Select("SELECT * FROM student where id=#{id}")
        Student getById(@Param("id") int id);
    
    }

#### 4. 其他service,controller及入口类都与第一部分一样. ####

#### 5. 验证结果 ####

![Image 1][]![20190531164636610.png][]

仍然可以实现SSM整合,以注解的方式实现明显更简单一些!

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3N5YzAwMDY2Ng_size_16_color_FFFFFF_t_70]: https://img-blog.csdnimg.cn/20190531164539419.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3N5YzAwMDY2Ng==,size_16,color_FFFFFF,t_70
[Image 1]: 
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3N5YzAwMDY2Ng_size_16_color_FFFFFF_t_70 1]: https://img-blog.csdnimg.cn/20190531164604249.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3N5YzAwMDY2Ng==,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3N5YzAwMDY2Ng_size_16_color_FFFFFF_t_70 2]: https://img-blog.csdnimg.cn/20190531164613887.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3N5YzAwMDY2Ng==,size_16,color_FFFFFF,t_70
[20190531164623723.png]: https://img-blog.csdnimg.cn/20190531164623723.png
[20190531164636610.png]: https://img-blog.csdnimg.cn/20190531164636610.png