快速创建SpringBoot+SSM解析

此处使用IDEA快速搭建SpringBoot应用,首先用SpringBoot搭建WEB工程:

image

然后点击Next生成项目,首次生成可能有点慢,下次创建的时候就会快很多,生成后的目录结构如下:

image

我们更改下这个启动类:

加上@RestController注解使之成为一个Controller,请求能进来,然后加上相应的方法:

@SpringBootApplication

@RestController

public class SpringbootdemoApplication {

public static void main(String[] args) {

    SpringApplication.run(SpringbootdemoApplication.class, args);

}

@RequestMapping(value = "/",produces = "text/plain;charset=UTF-8")

String index(){

    return "Hello Spring Boot!";

}

}

点击右上角的启动项,启动这个项目:

image

然后在浏览器中输入地址:http://localhost:8080/ 可以看到如下效果:

image

到此,一个简单的SpringBoot搭建完成了

2.然后开始我们的第二步,搭建SSM

在上一步的基础上我们需要添加些相关的配置来搭建SSM,如下为结构图:

image

UserController:

@RestController
/**自动返回的是json格式数据***/
public class UserController {
    
    @Autowired
    private UserService userService;

    @RequestMapping("list")
    public List<User> list(){
         //只对紧邻的下一条select语句进行分页查询，对之后的select不起作用
        List<User> list = userService.findAllUser();
        return list;
    }
}

User:

public class User implements Serializable{
    
    /**
     * 
     */
    private static final long serialVersionUID = 1L;
    private Integer id; 
    private String username;
    private Date birthday;
    private String sex;
    private String address;
    
    
    
    public Integer getId() {
        return id;
    }
    public void setId(Integer id) {
        this.id = id;
    }
    public Date getBirthday() {
        return birthday;
    }
    public void setBirthday(Date birthday) {
        this.birthday = birthday;
    }
    public String getSex() {
        return sex;
    }
    public void setSex(String sex) {
        this.sex = sex;
    }
    public String getUsername() {
        return username;
    }
    public void setUsername(String username) {
        this.username = username;
    }
    public String getAddress() {
        return address;
    }
    public void setAddress(String address) {
        this.address = address;
    }
    
    

}

UserMapper:

@Mapper
public interface UserMapper {
    
    public List<User> findAll();

}

UserService:

public interface UserService {
    
    /**
     * 根据接口查询所用的用户
     */
    public List<User> findAllUser();
}

UserServiceImpl:

@Service
public class UserServiceImpl implements UserService {
        @Resource
    private UserMapper userMapper;
        public List<User> findAllUser() {
        List<User> list = userMapper.findAll();
        return list;
    }

}

UserMapper.XML:

<?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.demo.mapper.UserMapper">
    <select id="findAll" resultType="com.demo.bean.User">
        select * from user
    </select>
</mapper>

SqlMapperConfig:

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
    <!-- <settings> 开启二级缓存 <setting name="cacheEnabled" value="true" /> </settings> -->
    <!-- 只需要定义个别名,这个应该有 -->
    
    
    <!-- springboot集成pageHelper(Java配置未注入的时候可以用下面配置) -->
<!--    <plugins>
        com.github.pagehelper为PageHelper类所在包名
        <plugin interceptor="com.github.pagehelper.PageInterceptor">
            使用下面的方式配置参数，后面会有所有的参数介绍
            <property name="helperDialect" value="mysql" />
        </plugin>
    </plugins> -->
</configuration>

application.properties:

#server.port=80

logging.level.org.springframework=DEBUG
#springboot   mybatis
#jiazai mybatis peizhiwenjian
mybatis.mapper-locations = classpath:mapper/*Mapper.xml
mybatis.config-location = classpath:mybatis/sqlMapConfig.xml
#mybatis.type-aliases-package = com.demo.bean

#shujuyuan
spring.datasource.driver-class-name= com.mysql.jdbc.Driver
spring.datasource.url = jdbc:mysql://localhost:3306/test?useUnicode=true&characterEncoding=utf-8
spring.datasource.username = root
spring.datasource.password = root

Pom.XML:

<?xml version="1.0" encoding="UTF-8"?>
<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/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.example</groupId>
    <artifactId>springbootdemo</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>

    <name>springbootdemo</name>
    <description>Demo project for Spring Boot</description>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.0.3.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-web</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>


        <!--mybatis与mysql-->
        <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
            <version>1.2.0</version>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
        </dependency>
        <!--druid依赖-->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid</artifactId>
            <version>1.0.25</version>
        </dependency>
        <!--redis依赖-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-redis</artifactId>
        </dependency>


        <!--lombok-->
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
        </dependency>

        <!--jasypt加解密-->
        <dependency>
            <groupId>com.github.ulisesbocchio</groupId>
            <artifactId>jasypt-spring-boot-starter</artifactId>
            <version>1.14</version>
        </dependency>

        <!--zipkin-->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-sleuth</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-sleuth-zipkin</artifactId>
        </dependency>


        <!--eureka-->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-eureka</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>


</project>

项目运行后访问http://localhost:8080/list,可以见到如下结果(这里省略sql表的设计,可以自己根据实体类来建表)

image.png