SSM整合(一) | SSM创建项目配置整合 - 添加功能模块

我就是我 2023-09-23 16:30 126阅读 0赞

#### 文章目录 ####

*  SSM整合
 *   *  SSM配置整合
     *  SSM功能模块

## SSM整合 ##

### SSM配置整合 ###

**SSM整合流程**:

1.  创建工程
2.  SSM整合

> **Spring**
> 
>  *  SpringConfig
> 
> **MyBatis**
> 
>  *  MybatisConfig
>  *  JdbcConfig
>  *  jdbc.properties
> 
> **SpringMVC**
> 
>  *  ServletConfig
>  *  SpringMvcConfig

**创建工程**

> 基于Maven创建项目, 选择webapp模版并补全缺失的目录

![在这里插入图片描述][85b69b3beeb2491994a1c9ac1c092b19.png_pic_center]

> 导入整合SSM的全部依赖坐标

<dependencies>
      <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-webmvc</artifactId>
        <version>5.2.10.RELEASE</version>
      </dependency>
    
      <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-jdbc</artifactId>
        <version>5.2.10.RELEASE</version>
      </dependency>
    
      <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-test</artifactId>
        <version>5.2.10.RELEASE</version>
      </dependency>
    
      <dependency>
        <groupId>org.mybatis</groupId>
        <artifactId>mybatis</artifactId>
        <version>3.5.6</version>
      </dependency>
    
      <dependency>
        <groupId>org.mybatis</groupId>
        <artifactId>mybatis-spring</artifactId>
        <version>1.3.0</version>
      </dependency>
    
      <dependency>
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
        <version>5.1.47</version>
      </dependency>
    
      <dependency>
        <groupId>com.alibaba</groupId>
        <artifactId>druid</artifactId>
        <version>1.1.16</version>
      </dependency>
    
      <dependency>
        <groupId>junit</groupId>
        <artifactId>junit</artifactId>
        <version>4.12</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>com.fasterxml.jackson.core</groupId>
        <artifactId>jackson-databind</artifactId>
        <version>2.9.0</version>
      </dependency>
    </dependencies>

> 分别创建如下图所示的包

![在这里插入图片描述][be8630238d844d60943bea1f55ab0347.png_pic_center]

**Spring整合Mybatis**

> 配置文件:
> 
>  *  SpringConfig
>  *  JdbcConfig、jdbc.properties
>  *  MyBatisConfig

> config包下创建SpringConfig核心配置类

@Configuration // 设置为配置类
    @ComponentScan({
        "com.chenyq.service"}) // 扫描Spring控制的bean
    public class SpringConfig {
        
    }

> resource文件夹下创建jdbc.properties数据库配置文件

jdbc.driver=com.mysql.jdbc.Driver
    jdbc.url=jdbc:mysql://localhost:3306/db1
    jdbc.username=root
    jdbc.password=123456789

> config包下创建JdbcConfig配置类

public class JdbcConfig {
        
        @Value("${jdbc.driver}")
        private String driver;
        @Value("${jdbc.url}")
        private String url;
        @Value("${jdbc.username}")
        private String username;
        @Value("${jdbc.password}")
        private String password;
    
        @Bean
        public DataSource dataSource() {
        
            DruidDataSource dataSource = new DruidDataSource();
            dataSource.setDriverClassName(driver);
            dataSource.setUrl(url);
            dataSource.setUsername(username);
            dataSource.setPassword(password);
            return dataSource;
        }
    }

> config包下创建MyBatisConfig配置类

public class MyBatisConfig {
        
        @Bean
        public SqlSessionFactoryBean sqlSessionFactory(DataSource dataSource) {
        
            SqlSessionFactoryBean factoryBean = new SqlSessionFactoryBean();
            factoryBean.setDataSource(dataSource);
            factoryBean.setTypeAliasesPackage("com.chenyq.pojo");
            return factoryBean;
        }
    
        @Bean
        public MapperScannerConfigurer mapperScannerConfigurer() {
        
            MapperScannerConfigurer msc = new MapperScannerConfigurer();
            msc.setBasePackage("com.chenyq.dao");
            return msc;
        }
    }

> 在SpringConfig文件中将配置的JdbcConfig、jdbc.properties、MyBatisConfig加载进来

@Configuration // 设置为配置类
    @ComponentScan({
        "com.chenyq.service"}) // 扫描Spring控制的bean
    @PropertySource("classpath:jdbc.properties") // 加载jdbc.properties配置文件
    @Import({
        JdbcConfig.class, MyBatisConfig.class}) // 导入配置类
    public class SpringConfig {
        
    }

**Spring整合SpringMVC**

> config包下创建一个Web容器配置类ServletConfig配置类

public class ServletConfig extends AbstractAnnotationConfigDispatcherServletInitializer {
        
        protected Class<?>[] getRootConfigClasses() {
        
            return new Class[]{
        SpringConfig.class};
        }
    
        protected Class<?>[] getServletConfigClasses() {
        
            return new Class[]{
        SpringMvcConfig.class};
        }
    
        protected String[] getServletMappings() {
        
            return new String[]{
        "/"};
        }
    }

> config包下创建SpringMvcConfig配置类

@Configuration
    @ComponentScan("com.chenyq.controller")
    @EnableWebMvc
    public class SpringMvcConfig {
        
    }

**Spring事务配置**

> SpringConfig配置类中开启事务驱动

> JdbcConfig创建事务管理器

**配置SpringMvc对静态资源放行, 不拦截静态资源路径(*根据需求配置*)**

> config包下添加一个配置类SpringMvcSupport

@Configuration
    public class SpringMvcSupport extends WebMvcConfigurationSupport {
        
        @Override
        protected void addResourceHandlers(ResourceHandlerRegistry registry) {
        
            // 当访问静态资源路径pages时, SpringMvc不进行管理
            registry.addResourceHandler("/pages/**").addResourceLocations("/pages/");
            // 当访问静态资源路径css时, SpringMvc不进行管理
            registry.addResourceHandler("/css/**").addResourceLocations("/css/");
            // 当访问静态资源路径js时, SpringMvc不进行管理
            registry.addResourceHandler("/js/**").addResourceLocations("/js/");
            // 当访问静态资源路径plugins时, SpringMvc不进行管理
            registry.addResourceHandler("/plugins/**").addResourceLocations("/plugins/");
        }
    }

> 并让SpringConfig扫描SpringMvcSupport配置类

@Configuration
    @ComponentScan({
        "com.chenyq.controller", "com.chenyq.config"})
    @EnableWebMvc
    public class SpringMvcConfig {
        
    }

**到这里SSM整合就完成了, 最终目录结构如下, 下面可以添加功能模块**

![在这里插入图片描述][938c4bce0fd64e329d9bdd24862c4c7a.png_pic_center]

### SSM功能模块 ###

**功能模块添加流程**:

> 表与实体类
> 
> dao（接口+自动代理）
> 
> service（接口+实现类）
> 
>  *  业务层接口测试（整合JUnit）
> 
> controller
> 
>  *  表现层接口测试（PostMan）

**创建数据库表和实体类**:

> 创建tbl\_book表, 并添加一些测试数据

DROP TABLE IF EXISTS `tbl_book`;
    CREATE TABLE `tbl_book`  (
      `id` int(11) NOT NULL AUTO_INCREMENT,
      `type` varchar(20) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL,
      `name` varchar(50) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL,
      `description` varchar(255) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL,
      PRIMARY KEY (`id`) USING BTREE
    ) ENGINE = InnoDB AUTO_INCREMENT = 13 CHARACTER SET = utf8 COLLATE = utf8_general_ci ROW_FORMAT = Dynamic;
    
    -- ----------------------------
    -- Records of tbl_book
    -- ----------------------------
    INSERT INTO `tbl_book` VALUES (1, '计算机理论', 'Spring实战 第5版', 'Spring入门经典教程，深入理解Spring原理技术内幕');
    INSERT INTO `tbl_book` VALUES (2, '计算机理论', 'Spring 5核心原理与30个类手写实战', '十年沉淀之作，手写Spring精华思想');
    INSERT INTO `tbl_book` VALUES (3, '计算机理论', 'Spring 5 设计模式', '深入Spring源码剖析Spring源码中蕴含的10大设计模式');
    INSERT INTO `tbl_book` VALUES (4, '计算机理论', 'Spring MVC+MyBatis开发从入门到项目实战', '全方位解析面向Web应用的轻量级框架，带你成为Spring MVC开发高手');
    INSERT INTO `tbl_book` VALUES (5, '计算机理论', '轻量级Java Web企业应用实战', '源码级剖析Spring框架，适合已掌握Java基础的读者');
    INSERT INTO `tbl_book` VALUES (6, '计算机理论', 'Java核心技术 卷I 基础知识（原书第11版）', 'Core Java 第11版，Jolt大奖获奖作品，针对Java SE9、10、11全面更新');
    INSERT INTO `tbl_book` VALUES (7, '计算机理论', '深入理解Java虚拟机', '5个维度全面剖析JVM，大厂面试知识点全覆盖');
    INSERT INTO `tbl_book` VALUES (8, '计算机理论', 'Java编程思想（第4版）', 'Java学习必读经典,殿堂级著作！赢得了全球程序员的广泛赞誉');
    INSERT INTO `tbl_book` VALUES (9, '计算机理论', '零基础学Java（全彩版）', '零基础自学编程的入门图书，由浅入深，详解Java语言的编程思想和核心技术');
    INSERT INTO `tbl_book` VALUES (10, '市场营销', '直播就该这么做：主播高效沟通实战指南', '李子柒、李佳琦、薇娅成长为网红的秘密都在书中');
    INSERT INTO `tbl_book` VALUES (11, '市场营销', '直播销讲实战一本通', '和秋叶一起学系列网络营销书籍');
    INSERT INTO `tbl_book` VALUES (12, '市场营销', '直播带货：淘宝、天猫直播从新手到高手', '一本教你如何玩转直播的书，10堂课轻松实现带货月入3W+');

> pojo文件夹下创建实体类Book

public class Book {
        
        private Integer id;
        private String type;
        private String name;
        private String description;
    
        public Book() {
        
        }
    
        public Book(String type, String name, String description) {
        
            this.type = type;
            this.name = name;
            this.description = description;
        }
    
        public Integer getId() {
        
            return id;
        }
    
        public void setId(Integer id) {
        
            this.id = id;
        }
    
        public String getType() {
        
            return type;
        }
    
        public void setType(String type) {
        
            this.type = type;
        }
    
        public String getName() {
        
            return name;
        }
    
        public void setName(String name) {
        
            this.name = name;
        }
    
        public String getDescription() {
        
            return description;
        }
    
        public void setDescription(String description) {
        
            this.description = description;
        }
        
        @Override
        public String toString() {
        
            return "Book{" +
                    "id=" + id +
                    ", type='" + type + '\'' +
                    ", name='" + name + '\'' +
                    ", description='" + description + '\'' +
                    '}';
        }
    }

> dao层中创建一个接口BookDao, 该接口提供增删改查(查包括查全部和查单个)功能

public interface BookDao {
        
        // 添加数据
        @Insert("insert into tbl_book values(null, #{type}, #{name}, #{description})")
        void save(Book book);
    
        // 删除数据
        @Delete("delete from tbl_book where id=#{id}")
        void delete(Integer id);
    
        // 修改数据
        @Update("update tbl_book set type=#{type}, name=#{name}, description=#{description} where id=#{id}")
        void update(Book book);
    
        // 查询全部
        @Select("select * from tbl_book")
        List<Book> selectAll();
    
        // 根据id查询
        @Select("select * from tbl_book where id=#{id}")
        Book selectById(Integer id);
    }

> service中创建一个接口BookService, 并开启事务

@Transactional // 开启事务
    public interface BookService {
        
        /**
         * 增加数据
         * @param book
         * @return
         */
        boolean save(Book book);
    
        /**
         * 删除数据
         * @param id
         * @return
         */
        boolean delete(Integer id);
    
        /**
         * 修改数据
         * @param book
         * @return
         */
        boolean update(Book book);
    
        /**
         * 查询全部数据
         * @return
         */
        List<Book> selectAll();
    
        /**
         * 根据id查询数据
         * @param id
         * @return
         */
        Book selectById(Integer id);
    }

> 再在service层创建一个impl包, 并创建BookService接口的一个实现类BookServiceImpl

@Service
    public class BookServiceImpl implements BookService {
        
        @Autowired
        private BookDao bookDao;
    
        public boolean save(Book book) {
        
            bookDao.save(book);
            return true;
        }
    
        public boolean delete(Integer id) {
        
            bookDao.delete(id);
            return true;
        }
    
        public boolean update(Book book) {
        
            bookDao.update(book);
            return true;
        }
    
        public List<Book> selectAll() {
        
            return bookDao.selectAll();
        }
    
        public Book selectById(Integer id) {
        
            return bookDao.selectById(id);
        }
    }

> 表现层controller包下创建控制器类BookController和控制器方法

@RestController
    @RequestMapping("/books")
    public class BookController {
        
        @Autowired
        private BookService bookService;
    
        @PostMapping
        public boolean save(@RequestBody Book book) {
        
            return bookService.save(book);
        }
    
        @DeleteMapping("/{id}")
        public boolean delete(@PathVariable Integer id) {
        
            return bookService.delete(id);
        }
    
        @PutMapping
        public boolean update(@RequestBody Book book) {
        
            return bookService.update(book);
        }
    
        @GetMapping
        public List<Book> selectAll() {
        
            return bookService.selectAll();
        }
    
        @GetMapping("/{id}")
        public Book selectById(@PathVariable Integer id) {
        
            return bookService.selectById(id);
        }
    }

**到这里我们整合完成了SSM, 完成了对数据库增删改查的功能, 但是在真是开发中, 我们需要进行测试接口**

> 业务层接口通过Junit测试类测试; 创建com.chenyq.service包, 在该包下创建BookServiceTest测试

@RunWith(SpringJUnit4ClassRunner.class)
    @ContextConfiguration(classes = SpringConfig.class)
    public class BookServiceTest {
        
        @Autowired
        private BookService bookService;
    
        @Test
        public void testSave() {
        
            Book book = new Book("类型aaa", "名字bbb", "描述ccc");
            System.out.println(bookService.save(book));
        }
    
        @Test
        public void testDelete() {
        
            System.out.println(bookService.delete(7));
        }
    
        @Test
        public void testUpdate() {
        
            Book book = new Book("类型111", "名字222", "描述333");
            book.setId(8);
            System.out.println(bookService.update(book));
        }
    
        @Test
        public void testSelectAll() {
        
            System.out.println(bookService.selectAll());
        }
    
    
        @Test
        public void testSelectById() {
        
            System.out.println(bookService.selectById(2));
        }
    }

> 表现层接口通过PostMan进行测试

![在这里插入图片描述][3fcdd5979f6e423b85c2a30c111e728b.png_pic_center]

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