SpringMVC+Mybatis纯注解搭建SSM框架

1。首先需用ECLIPSE创建MAVEN工程，这里有几种方式，每一种都或多或少需要一些改动，比如少src/main/java,再比如初始为j2se1.5,亦或比如WEB-INF/web.xml缺失（可能以后都为非默认项了）等。初学者为简化搭建步骤（主要是少出错），可参考先建WEB Dynamic Web Project 项目，然后转configure ->convert to Maven Project;或NEW->MAVEN PROJECT->NEXT->Maven Webapp project->NEXT生成，这样改动的地方也比较少。

2。建好MAVEN后将各资源分别放置各包中（可根据自身的项目需要重命名），比如XX.DAO,XX.SERVICE,XX.POJO,XX.ENTITY,XX.VO,XX.YY什么的，源码地址：

https://github.com/pregalaxy/springmvc.git

3。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>first</groupId>
   <artifactId>webbank</artifactId>
   <packaging>war</packaging>
   <version>0.0.1-SNAPSHOT</version>
   <name>webbank Maven Webapp</name>
   <url>http://maven.apache.org</url>
   <properties>
       <spring.version>5.1.9.RELEASE</spring.version>
   </properties>
   <dependencies>
       <dependency>
           <groupId>junit</groupId>
           <artifactId>junit</artifactId>
           <version>3.8.1</version>
           <scope>test</scope>
       </dependency>
       
       
       <dependency>
           <groupId>org.springframework</groupId>
           <artifactId>spring-core</artifactId>
           <version>${spring.version}</version>
       </dependency>

<dependency>
           <groupId>org.springframework</groupId>
           <artifactId>spring-context</artifactId>
           <version>${spring.version}</version>
       </dependency>

<dependency>
           <groupId>org.springframework</groupId>
           <artifactId>spring-aop</artifactId>
           <version>${spring.version}</version>
       </dependency>

<dependency>
           <groupId>org.springframework</groupId>
           <artifactId>spring-web</artifactId>
           <version>${spring.version}</version>
       </dependency>

<dependency>
           <groupId>org.springframework</groupId>
           <artifactId>spring-webmvc</artifactId>
           <version>${spring.version}</version>
       </dependency>

<dependency>
           <groupId>org.springframework</groupId>
           <artifactId>spring-jdbc</artifactId>
           <version>${spring.version}</version>
       </dependency>

<dependency>
           <groupId>org.aspectj</groupId>
           <artifactId>aspectjweaver</artifactId>
           <version>1.9.2</version>
       </dependency>

<dependency>
           <groupId>mysql</groupId>
           <artifactId>mysql-connector-java</artifactId>
           <version>5.1.46</version>
       </dependency>

<dependency>
           <groupId>org.mybatis</groupId>
           <artifactId>mybatis</artifactId>
           <version>3.4.6</version>
       </dependency>
       
       <dependency>
           <groupId>org.mybatis</groupId>
           <artifactId>mybatis-spring</artifactId>
           <version>1.3.2</version>
       </dependency>
   </dependencies>
   <build>
       <finalName>webbank</finalName>
   </build>
</project>
已改成目前最新版，MYBATIS生成文件略（已改成全注解形式，原XML意义不大，如XML配置方式本站另有专门文档介绍。）

4。WEB.XML改成如下方式启动：

package com.bank.web;

import javax.servlet.ServletContext;
import javax.servlet.ServletRegistration;

import org.springframework.web.WebApplicationInitializer;
import org.springframework.web.context.support.AnnotationConfigWebApplicationContext;
import org.springframework.web.servlet.DispatcherServlet;

public class MyWebApplicationInitializer implements WebApplicationInitializer {

// @Override
public void onStartup(ServletContext servletCxt) {

// Load Spring web application configuration
AnnotationConfigWebApplicationContext ac = new AnnotationConfigWebApplicationContext();
ac.register(AppConfig.class);
ac.refresh();

// Create and register the DispatcherServlet
DispatcherServlet servlet = new DispatcherServlet(ac);
ServletRegistration.Dynamic registration = servletCxt.addServlet("app", servlet);
registration.setLoadOnStartup(1);
registration.addMapping("/");
}

}
5。相关配置文件：

package com.bank.web;

import javax.sql.DataSource;

import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.tomcat.dbcp.dbcp2.BasicDataSource;
import org.mybatis.spring.SqlSessionFactoryBean;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;

import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.EnableAspectJAutoProxy;
import org.springframework.jdbc.datasource.DataSourceTransactionManager;

@Configuration
@EnableAspectJAutoProxy
@ComponentScan("com.bank.controller,com.bank.service.impl")
@MapperScan("com.bank.dao")
public class AppConfig {

   @Bean
   public DataSource dataSource() {
       BasicDataSource dataSource = new BasicDataSource();
       dataSource.setDriverClassName("com.mysql.jdbc.Driver");
       dataSource.setUrl("jdbc:mysql://localhost:3306/test?useUnicode=true&character=utf8");
       dataSource.setUsername("root");
       dataSource.setPassword("");
       return dataSource;
   }

   @Bean
   public DataSourceTransactionManager transactionManager() {
       return new DataSourceTransactionManager(dataSource());
   }

   @Bean
   public SqlSessionFactory sqlSessionFactory() throws Exception {
       SqlSessionFactoryBean sessionFactory = new SqlSessionFactoryBean();
       sessionFactory.setDataSource(dataSource());
       return sessionFactory.getObject();
   }

}
6.Controller：

package com.bank.controller;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;

import com.bank.service.BankService;

@Controller
public class AccountController {

   @Autowired
   private BankService bankService;


   public BankService getBankService() {
       return bankService;
   }

   public void setBankService(BankService bankService) {
       this.bankService = bankService;
   }

   @RequestMapping("/open")
   public String openAccount() {
       System.out.println("ok opened!");

//各种测试，可直接改名即用
//       BankServiceImpl bankServiceImpl=new BankServiceImpl();
//       BankDAOImplDB bankDAOImplDB=new BankDAOImplDB();
//       bankServiceImpl.setBankDAO(bankDAOImplDB);
//       bankServiceImpl.openAccount();

       bankService.openAccount();
       System.out.println("1");

       return "index.jsp";

   }
}
7.DAO

package com.bank.dao;

import java.util.List;
import java.util.Map;

import org.apache.ibatis.annotations.Mapper;
import org.apache.ibatis.annotations.Select;

import com.bank.pojo.Temp;

//这里的叫法也有多种，比如MAPPER什么的，不过这里面都是@INSERT,@DELETE,@UPDATE之类的打上标记写SQL的地方

@Mapper
public interface TempDAO {

   @Select("select * from temp where aa = #{id}")
   public Temp selectTemp(int id);

   @Select("select * from temp")
   public List<Map<String,String>> selectAll();
}

8.ServiceImpl类加注解

package com.bank.service.impl;

import java.util.Date;
import java.util.Scanner;
import java.util.UUID;

import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.stereotype.Service;

import com.bank.dao.TempDAO;
import com.bank.pojo.Temp;
import com.bank.pojo.Users;
import com.bank.service.BankService;

@Service
public class BankServiceImpl implements BankService{

下面的各种测试注解都不用加，这里只有@service，与@Autowired注入哪个DAO即可

//   @MyDAO(name="BankDAOImplMap")
//   @Autowired
//   @Qualifier("bankDAOImplDB")
//   private BankDAO bankDAO;

   @Autowired
   private TempDAO tempDAO;

//   public BankDAO getBankDAO() {
//       return bankDAO;
//   }
//
//   public void setBankDAO(BankDAO bankDAO) {
//       this.bankDAO = bankDAO;
//   }

   public Users openAccount() {
       System.out.println("sercie");

       System.out.println(tempDAO.selectTemp(1).getBb());
       return null;
   }
}
9.service、实体类、数据库建表、HTML什么的略，到此框架基本搭建完成，对一般应用扩展新建应用类打对标签，照格式写即可

FRESHET

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