純代碼（基於註解和代碼,零xml）整合SSHM（Spring、SpringMVC、Hibernate、Mybatis）

純代碼整合

環境和工具

• IDEA集成開發環境
• Maven自動構建工具
• JDK1.8

項目目錄結構

項目依賴包文件pom.xml

<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/maven-v4_0_0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>com.lyx</groupId>
  <artifactId>annototionconfig</artifactId>
  <packaging>war</packaging>
  <version>1.0-SNAPSHOT</version>
  <name>annototionconfig Maven Webapp</name>
  <url>http://maven.apache.org</url>

  <properties>
    <spring.version>4.3.11.RELEASE</spring.version>
  </properties>

  <dependencies>
    <!-- Java Web開發相關API -->
    <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>javax.servlet.jsp-api</artifactId>
      <version>2.3.1</version>
      <scope>provided</scope>
    </dependency>
    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>jstl</artifactId>
      <version>1.2</version>
    </dependency>
    <!-- Hibernate -->
    <dependency>
      <groupId>org.hibernate</groupId>
      <artifactId>hibernate-core</artifactId>
      <version>5.2.10.Final</version>
    </dependency>
    <!-- MyBatis -->
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis</artifactId>
      <version>3.4.4</version>
    </dependency>
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis-spring</artifactId>
      <version>1.3.1</version>
    </dependency>
    <!-- MySQL驅動 -->
    <dependency>
      <groupId>mysql</groupId>
      <artifactId>mysql-connector-java</artifactId>
      <version>5.1.38</version>
    </dependency>
    <!-- DBCP2數據庫連接池 -->
    <dependency>
      <groupId>org.apache.commons</groupId>
      <artifactId>commons-dbcp2</artifactId>
      <version>2.1.1</version>
    </dependency>
    <!-- Druid數據庫連接池 -->
    <dependency>
      <groupId>com.alibaba</groupId>
      <artifactId>druid</artifactId>
      <version>1.1.5</version>
    </dependency>
    <!-- Spring MVC相關API -->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-webmvc</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <!-- Spring Context Support - 整合第三方方案 -->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-context-support</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <!-- Spring整合ORM框架相關API -->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-orm</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <!-- Spring測試框架相關API -->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-test</artifactId>
      <version>${spring.version}</version>
      <scope>test</scope>
    </dependency>
    <!-- JUnit單元測試 -->
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.12</version>
      <scope>test</scope>
    </dependency>
    <!-- 將被測對象所依賴的其他對象模擬出來 -->
    <dependency>
      <groupId>org.mockito</groupId>
      <artifactId>mockito-core</artifactId>
      <version>2.10.0</version>
      <scope>test</scope>
    </dependency>
    <!-- Apache的編解碼工具 -->
    <dependency>
      <groupId>commons-codec</groupId>
      <artifactId>commons-codec</artifactId>
      <version>1.10</version>
    </dependency>
    <!-- 驗證框架 -->
    <dependency>
      <groupId>org.hibernate</groupId>
      <artifactId>hibernate-validator</artifactId>
      <version>5.4.1.Final</version>
    </dependency>
    <!-- JSON轉換工具 -->
    <dependency>
      <groupId>com.fasterxml.jackson.core</groupId>
      <artifactId>jackson-databind</artifactId>
      <version>2.9.0</version>
    </dependency>
    <dependency>
      <groupId>com.alibaba</groupId>
      <artifactId>fastjson</artifactId>
      <version>1.2.39</version>
    </dependency>
    <!-- Thymeleaf -->
    <dependency>
      <groupId>org.thymeleaf</groupId>
      <artifactId>thymeleaf-spring4</artifactId>
      <version>3.0.7.RELEASE</version>
    </dependency>
    <!-- Freemarker模板引擎 -->
    <dependency>
      <groupId>org.freemarker</groupId>
      <artifactId>freemarker</artifactId>
      <version>2.3.23</version>
    </dependency>
    <!-- 日誌 -->
    <dependency>
      <groupId>ch.qos.logback</groupId>
      <artifactId>logback-classic</artifactId>
      <version>1.2.3</version>
    </dependency>
    <!-- 安全 -->
    <dependency>
      <groupId>org.springframework.security</groupId>
      <artifactId>spring-security-web</artifactId>
      <version>4.2.3.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework.security</groupId>
      <artifactId>spring-security-config</artifactId>
      <version>4.2.3.RELEASE</version>
    </dependency>
    <!-- 序列化與反序列化 -->
    <dependency>
      <groupId>com.google.protobuf</groupId>
      <artifactId>protobuf-java</artifactId>
      <version>3.4.0</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/org.aspectj/aspectjrt -->
    <dependency>
      <groupId>org.aspectj</groupId>
      <artifactId>aspectjrt</artifactId>
      <version>1.8.10</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/org.aspectj/aspectjweaver -->
    <dependency>
      <groupId>org.aspectj</groupId>
      <artifactId>aspectjweaver</artifactId>
      <version>1.8.10</version>
    </dependency>

  </dependencies>
  <build>
    <finalName>annototionconfig</finalName>
    <!--因爲IDEA有嚴格的檢查，在java路徑下只去加載java文件，所以要告訴它在java某個路徑下去加載某某文件-->
    <resources>
      <resource>
        <directory>src/main/java</directory>
        <includes>
          <include>**/*.xml</include>
        </includes>
      </resource>
    </resources>

    <plugins>
      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-war-plugin</artifactId>
        <configuration>
          <failOnMissingWebXml>false</failOnMissingWebXml>
        </configuration>
      </plugin>
      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-compiler-plugin</artifactId>
        <configuration>
          <source>1.8</source>
          <target>1.8</target>
        </configuration>
      </plugin>
    </plugins>
  </build>
</project>

相當於web.xml文件的配置類

MyWebInitializer.java

package com.lyx.ann.config;

import org.springframework.web.filter.CharacterEncodingFilter;
import org.springframework.web.servlet.support.AbstractAnnotationConfigDispatcherServletInitializer;

import javax.servlet.Filter;

//該類最終是實現了WebApplicationInitializer接口的
//所以當服務器（servlet容器）一啓動就會自動找到該類(相當於web.xml文件)
//此處相當於前端控制器、監聽器、過濾器等功能
public class MyWebInitializer extends AbstractAnnotationConfigDispatcherServletInitializer{

    //SpringIoC容器的配置在哪些類中
    @Override
    protected Class<?>[] getRootConfigClasses() {
        return new Class[]{MySpringConfig.class};
    }

    //SpringMVC的配置在哪些類中
    @Override
    protected Class<?>[] getServletConfigClasses() {
        return new Class[]{MySpringMvcConfig.class};
    }

    //配置前端控制器的映射
    @Override
    protected String[] getServletMappings() {
        return new String[]{"/"};
    }

    // 配置過濾器
    @Override
    protected Filter[] getServletFilters() {
        return new Filter[]{
                new CharacterEncodingFilter("utf-8", true)
        };
    }
}

相當於SpringMVC.xml的配置文件

MySpringMvcConfig.java

package com.lyx.ann.config;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.converter.BufferedImageHttpMessageConverter;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.converter.StringHttpMessageConverter;
import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
import org.springframework.web.servlet.ViewResolver;
import org.springframework.web.servlet.config.annotation.DefaultServletHandlerConfigurer;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
import org.springframework.web.servlet.view.InternalResourceViewResolver;
import org.springframework.web.servlet.view.JstlView;

import java.util.List;

//SpringMVC的配置類
//表明是配置類
@Configuration
//掃包，找控制器 <context:component-scan>
@ComponentScan(basePackages = "com.lyx.ann.controller")
//通過註解配置SpringMVC <mvc:annotation-driven>
@EnableWebMvc
public class MySpringMvcConfig extends WebMvcConfigurerAdapter {

    // <mvc:default-servlet-handler>
    //處理靜態資源處理器
    @Override
    public void configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer) {
        //啓用默認的servlet處理靜態資源
        configurer.enable();
    }

    /*@Override //攔截器
    public void addInterceptors(InterceptorRegistry registry) {
        super.addInterceptors(registry);
    }*/

    // <mvc:message-converters>
    // 消息轉換器
    @Override
    public void configureMessageConverters(List<HttpMessageConverter<?>> converters) {
        converters.add(new StringHttpMessageConverter());
        converters.add(new BufferedImageHttpMessageConverter());
        converters.add(new MappingJackson2HttpMessageConverter());

    }

    //<bean>標籤
    @Bean
    //視圖解析器
    public ViewResolver viewResolverWithJSP(){
        InternalResourceViewResolver resolver=new InternalResourceViewResolver();
        resolver.setViewClass(JstlView.class);
        resolver.setPrefix("/WEB-INF/jsp/");
        resolver.setSuffix(".jsp");
        return  resolver;
    }
}

相當於Spring.xml文件的配置類

MySpringConfig.java

package com.lyx.ann.config;

import com.alibaba.druid.pool.DruidDataSource;
import com.lyx.ann.domain.User;
import org.hibernate.SessionFactory;
import org.mybatis.spring.SqlSessionFactoryBean;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.*;
import org.springframework.core.io.Resource;
import org.springframework.core.io.support.PathMatchingResourcePatternResolver;
import org.springframework.orm.hibernate5.HibernateTransactionManager;
import org.springframework.orm.hibernate5.LocalSessionFactoryBean;
import org.springframework.stereotype.Controller;
import org.springframework.transaction.annotation.EnableTransactionManagement;
import org.springframework.web.bind.annotation.ControllerAdvice;

import javax.sql.DataSource;
import java.io.IOException;
import java.util.Properties;

//Spring的配置類
@Configuration
@ComponentScan(
        basePackages = "com.lyx.ann",
        excludeFilters = @ComponentScan.Filter(
                type = FilterType.ANNOTATION, classes = {Controller.class, ControllerAdvice.class, Configuration.class}
        )
)
// <aop:aspectj-autoproxy> 自己寫的AOP切面
@EnableAspectJAutoProxy
// <tx:annotation-driven> 聲明式事務
@EnableTransactionManagement
// <bean class="PropertyPlaceholderConfigurer"> 加載外部資源文件
@PropertySource("classpath:application.properties")
//Mybatis掃包-找映射器
@MapperScan("com.lyx.ann.mapper")
//@Import(MySpringConfig2.class)    導入另一個配置類
//@ImportResource("classpath:Spring.xml")   導入另外的xml配置文件
public class MySpringConfig {

    @Value("${jdbc.url}")   //取資源文件中相對應的值
    private String url;
    @Value("${jdbc.username}")
    private String username;
    @Value("${jdbc.password}")
    private String password;
    private Properties props;

    //數據庫連接池
    @Bean
    public DataSource dataSource() {
        DruidDataSource dataSource = new DruidDataSource();
        dataSource.setUrl(url);
        dataSource.setUsername(username);
        dataSource.setPassword(password);
        dataSource.setInitialSize(20);
        dataSource.setMinIdle(20);
        dataSource.setMaxActive(50);
        dataSource.setMaxWait(10000);
        return dataSource;
    }

    //Hibernate的SessionFactory
    @Bean
    public LocalSessionFactoryBean sessionFactoryBean(DataSource dataSource) {
        LocalSessionFactoryBean sessionFactoryBean = new LocalSessionFactoryBean();
        sessionFactoryBean.setDataSource(dataSource);
        sessionFactoryBean.setPackagesToScan("com.lyx.ann.domain");
        Properties props = new Properties();
        props.setProperty("hibernate.dialect", "org.hibernate.dialect.MySQL57Dialect");
        props.setProperty("hibernate.show_sql","true");
        props.setProperty("hibernate.format_sql","true");
        sessionFactoryBean.setHibernateProperties(props);
        return sessionFactoryBean;
    }

    //創建Mybatis的SqlSessionFactory
    @Bean
    public SqlSessionFactoryBean sqlSessionFactoryBean(DataSource dataSource) throws IOException {
        SqlSessionFactoryBean sqlSessionFactoryBean = new SqlSessionFactoryBean();
        sqlSessionFactoryBean.setDataSource(dataSource);
        sqlSessionFactoryBean.setTypeAliases(new Class[]{User.class});
        PathMatchingResourcePatternResolver resolver = new PathMatchingResourcePatternResolver();
        Resource[] resources = resolver.getResources("classpath:com/lyx/ann/mapper/*.xml");
        sqlSessionFactoryBean.setMapperLocations(resources);
        return sqlSessionFactoryBean;
    }

    @Bean
    public HibernateTransactionManager transactionManager(SessionFactory sessionFactory){
        return new HibernateTransactionManager(sessionFactory);
    }
}

數據庫連接池配置信息文件

jdbc.url=jdbc:mysql://localhost:3306/hrs
jdbc.username=root
jdbc.password=951112