springboot整合ssm详细讲解

SSM是企业中广泛应用的框架。大家再熟练地使用SSM进行业务逻辑开发的时候，也被它大量的xml配置困扰。今
天快速优雅的使用SpringBoot实现简易的SSM工程。废话不多说，come on

开发工具idea

1.创建一个web工程，pom.xml中加入如下配置：

<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>1.5.10.RELEASE</version>
    <relativePath/> <!-- lookup parent from repository -->
</parent>
<properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
    <java.version>1.8</java.version>
</properties>
<dependencies>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-jdbc</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-aop</artifactId>
    </dependency>
    <dependency>
        <groupId>org.mybatis.spring.boot</groupId>
        <artifactId>mybatis-spring-boot-starter</artifactId>
        <version>1.3.1</version>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-tomcat</artifactId>
        <scope>provided</scope>
    </dependency>

    <dependency>
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
        <scope>runtime</scope>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-test</artifactId>
        <scope>test</scope>
    </dependency>
    <!--使用jsp页面-->
    <dependency>
        <groupId>org.apache.tomcat.embed</groupId>
        <artifactId>tomcat-embed-jasper</artifactId>
    </dependency>
    <dependency>
        <groupId>jstl</groupId>
        <artifactId>jstl</artifactId>
        <version>1.2</version>
    </dependency>
</dependencies>
<build>
    <plugins>
        <plugin>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-maven-plugin</artifactId>
        </plugin>
    </plugins>
    <resources>
        <resource>
            <directory>src/main/java</directory>
            <includes>
                <include>**/*.xml</include>
            </includes>
        </resource>
        <resource>
            <directory>src/main/resources</directory>
            <includes>
                <include>**/*.xml</include>
                <include>**/*.properties</include>
            </includes>
        </resource>
    </resources>
</build>

2.工程结构

3.数据库和实体类
数据库使用mysql，创建部门表dept，表结构很简单，id主键和name部门名称。

4.dao层

dao的代码我们演示两种方式，一种使用传统的Mapper映射文件，一种使用注解编写sql:

package com.test.springboot.ssm.dao;
import com.test.springboot.ssm.pojo.Dept;
import org.apache.ibatis.annotations.Insert;
import org.apache.ibatis.annotations.Options;
import java.util.List;
public interface DeptDAO {
//查询列表，演示使用传统的mapper映射文件
List<Dept> getDeltList();
//插入，演示使用注解编写sql，省略xml配置
@Insert("insert into DEPT(NAME) values(#{name})")
@Options(useGeneratedKeys = true, keyProperty = "id", keyColumn = "ID")
void addDept(String name);
}

mapper映射文件如下

<?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.test.springboot.ssm.dao.DeptDAO">
<resultMap id="deptMap" type="Dept">
<id property="id" column="ID"/>
<result property="name" column="NAME"/>
</resultMap>
<select id="getDeltList" resultMap="deptMap">
select ID,NAME from DEPT
</select>
</mapper>

注意mapper的namespace是DAO接口的全路径，mapper中语句的id与DAO接口中的方法名是一致的
5.service层

接口:
package com.test.springboot.ssm.service;
import com.test.springboot.ssm.pojo.Dept;
import java.util.List;
public interface DeptService {
List<Dept> getDeltList();
void addDept(String name);
}
实现类;

package com.test.springboot.ssm.service.impl;
import com.test.springboot.ssm.dao.DeptDAO;
import com.test.springboot.ssm.pojo.Dept;
import com.test.springboot.ssm.service.DeptService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import java.util.List;
@Service
public class DeptServiceImpl implements DeptService {
@Autowired
private DeptDAO deptDAO;

@Override
public List<Dept> getDeltList() {
return deptDAO.getDeltList();
}

@Override
public void addDept(String name) {
deptDAO.addDept(name);
}
}
6.controller层

package com.test.springboot.ssm.controller;
import com.test.springboot.ssm.pojo.Dept;
import com.test.springboot.ssm.service.DeptService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;
import java.util.List;
@Controller
public class DeptController {
@Autowired
private DeptService deptService;
@RequestMapping("list.html")
public ModelAndView list() {
List<Dept> deptList = deptService.getDeltList();
return new ModelAndView("list", "deptList", deptList);
}

@RequestMapping("add.html")
public String add(String name) {
deptService.addDept(name);
//添加成功后重定向到列表页
return "redirect:list.html";
}
}
jsp页面

add.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<body>
<form action="/add.html" method="post">
部门名:<input type="text" name="name"/><br/>
<input type="submit" value="add"/>
</form>
</body>
</html>
list.jsp

<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<body>
<c:forEach items="${deptList}" var="dept">
${dept.id}-${dept.name}<br/>
</c:forEach>
</body>
</html>
貌似到目前为止，编码的形式和我们开发普通的SSM没什么区别，不要着急，重点来了。传统的ssm中我们需需要
在spring.xml中配置数据源、声明式事务、mybatis配置信息、注解扫描等。使用SpringBoot，我们可以省略掉所
有的xml。没错，就是一个配置文件都没有，废话少说，上代码：
SpringBoot有个全局的属性配置文件application.properties

#数据源的基本信息
spring.datasource.url = jdbc:mysql://localhost:3306/test?characterEncoding=utf-8
spring.datasource.username = root
spring.datasource.password =
spring.datasource.driverClassName = com.mysql.jdbc.Driver
#mybatis中mapper文件的路径
mybatis.mapper-locations=classpath*:com/test/springboot/ssm/dao/mappers/*.xml
#起别名。可省略写mybatis的xml中的resultType的全路径
mybatis.type-aliases-package=com.test.springboot.ssm.pojo
#springMVC中的视图信息，响应前缀
spring.mvc.view.prefix=/
# 响应页面默认后缀
spring.mvc.view.suffix=.jsp
#DispatcherServlet中响应的url-pattern
server.sevlet-path=*.html
7.入口类

package com.test.springboot.ssm;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.transaction.annotation.EnableTransactionManagement;
@SpringBootApplication
@EnableTransactionManagement//开启事务管理
@ComponentScan("com.test.springboot.ssm")//扫描注解元素
@MapperScan("com.test.springboot.ssm.dao")//Mybatis的DAO所在包
public class SpringbootSsmApplication {
public static void main(String[] args) {
SpringApplication.run(SpringbootSsmApplication.class, args);
}
}
对比发现，SpringBoot可以省略大量的xml配置文件，几个注解轻松代替繁琐的配置。为了方便大家接受
SpringBoot，本文中的示例使用的页面模板引擎还是jsp。Spring官网推荐使用Thymeleaf 作为页面模板引擎，后
续的学习中

springboot整合ssm详细讲解

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