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idea+maven+springboot+mybatis

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确认maven环境,安装maven在这里就不赘述了.

在idea新建maven项目

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下图中填上你Maven安装的目录 

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打开pom文件,导入jar包(手动敲入/拷贝)

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下面是配置之后的pom文件内容

            <
            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.xzk</groupId><artifactId>testboot</artifactId><packaging>war</packaging><version>1.0-SNAPSHOT</version><name>testboot Maven Webapp</name><url>http://maven.apache.org</url><parent><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-parent</artifactId><version>1.4.3.RELEASE</version></parent><dependencies><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId></dependency><dependency><groupId>junit</groupId><artifactId>junit</artifactId><version>3.8.1</version><scope>test</scope></dependency></dependencies><build><finalName>testboot</finalName></build></project>

 

 maven刷新/重新生成,确认导入包,

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在main下新建java文件夹

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先按这个目录/包结构建立 

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新建入口类Application.java
            import
             org.springframework.boot.SpringApplication;

            import
             org.springframework.boot.autoconfigure.EnableAutoConfiguration;

            import
             org.springframework.boot.web.support.SpringBootServletInitializer;

            import
             org.springframework.context.annotation.ComponentScan;

            import
             org.springframework.context.annotation.Configuration;

@Configuration
@EnableAutoConfiguration
@ComponentScan

            public
            class Application extends SpringBootServletInitializer{
    publicstaticvoid main(String[] args) {
        SpringApplication.run(Application.class,args);
    }
}

 

实体model
            public
            class
             User {
    
            private
             String name;

    
            public
             String getName() {
        
            return
             name;
    }
    
            public
            void
             setName(String name) {
        
            this.name = name;
    }
}

 

控制层
            import
             org.springframework.boot.autoconfigure.EnableAutoConfiguration;

            import
             org.springframework.web.bind.annotation.RequestMapping;

            import
             org.springframework.web.bind.annotation.RestController;

@RestController
@EnableAutoConfiguration
@RequestMapping("/testboot")
publicclass TestBootController {
    @RequestMapping("getuser")
    public User getUser() {
        User user = new User();
        user.setName("test");
        return user;
    }
}

 

        
启动,

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或者按alt+F12, 在路径后边加上 mvn spring-boot:run   回车

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或者在cmd, 项目根目录下键入 mvn spring-boot:run

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 集成mybatis

不用说,先配置pom文件,导入jar包,最终的pom内容:

            <
            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.xu</groupId><artifactId>testboot</artifactId><packaging>war</packaging><version>1.0-SNAPSHOT</version><name>testboot Maven Webapp</name><url>http://maven.apache.org</url><parent><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-parent</artifactId><version>1.4.0.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>junit</groupId><artifactId>junit</artifactId><version>3.8.1</version><scope>test</scope></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId></dependency><!--支持使用 JDBC 访问数据库--><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-jdbc</artifactId></dependency><!--Mybatis--><dependency><groupId>org.mybatis</groupId><artifactId>mybatis-spring</artifactId><version>1.2.2</version></dependency><dependency><groupId>org.mybatis</groupId><artifactId>mybatis</artifactId><version>3.2.8</version></dependency><!--Mysql / DataSource--><dependency><groupId>org.apache.tomcat</groupId><artifactId>tomcat-jdbc</artifactId></dependency><dependency><groupId>mysql</groupId><artifactId>mysql-connector-java</artifactId></dependency><!--Json Support--><dependency><groupId>com.alibaba</groupId><artifactId>fastjson</artifactId><version>1.1.43</version></dependency><!-- https://mvnrepository.com/artifact/log4j/log4j --><dependency><groupId>log4j</groupId><artifactId>log4j</artifactId><version>1.2.17</version></dependency></dependencies><build><plugins><plugin><groupId>org.springframework.boot</groupId><artifactId>spring-boot-maven-plugin</artifactId></plugin></plugins></build></project>

 

接下来配置数据源,在resource下新建文件

application.properties

spring.datasource.url=jdbc:mysql://127.0.0.1:3306/test?useUnicode=true&characterEncoding=gbk&zeroDateTimeBehavior=convertToNull
spring.datasource.username=root
spring.datasource.password=root
spring.datasource.driver-class-name=com.mysql.jdbc.Driver
server.address=127.0.0.1
server.port=9090

 

在Application.java中配置DataSource，SqlSeesion. 最终的Application.class内容:

            import
             org.apache.ibatis.session.SqlSessionFactory;

            import
             org.apache.log4j.Logger;

            import
             org.apache.tomcat.jdbc.pool.DataSource;

            import
             org.mybatis.spring.SqlSessionFactoryBean;

            import
             org.mybatis.spring.annotation.MapperScan;

            import
             org.springframework.boot.SpringApplication;

            import
             org.springframework.boot.autoconfigure.SpringBootApplication;

            import
             org.springframework.boot.context.properties.ConfigurationProperties;

            import
             org.springframework.context.annotation.Bean;

            import
             org.springframework.core.io.support.PathMatchingResourcePatternResolver;

            import
             org.springframework.jdbc.datasource.DataSourceTransactionManager;

            import
             org.springframework.transaction.PlatformTransactionManager;



            //
            @EnableAutoConfiguration

            //
            @Configuration

            //
            @ComponentScan
            @SpringBootApplication
@MapperScan("com.xu.boot.mapper")
publicclass Application {
    privatestatic Logger logger = Logger.getLogger(Application.class);

    //DataSource配置    @Bean
    @ConfigurationProperties(prefix="spring.datasource")
    public DataSource dataSource() {
        returnnew DataSource();
    }

    //提供SqlSeesion    @Bean
    public SqlSessionFactory sqlSessionFactoryBean() throws Exception {

        SqlSessionFactoryBean sqlSessionFactoryBean = new SqlSessionFactoryBean();
        sqlSessionFactoryBean.setDataSource(dataSource());

        PathMatchingResourcePatternResolver resolver = new PathMatchingResourcePatternResolver();

        sqlSessionFactoryBean.setMapperLocations(resolver.getResources("classpath:/mybatis/*.xml"));

        return sqlSessionFactoryBean.getObject();
    }

    @Bean
    public PlatformTransactionManager transactionManager() {
        returnnew DataSourceTransactionManager(dataSource());
    }

    /**
     * Main Start
     */publicstaticvoid main(String[] args) {
        SpringApplication.run(Application.class, args);
        logger.info("============= SpringBoot Start Success =============");
    }

}

 

其中:

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如果目录结构和springboot推荐的一样,那么只加@SpringBootApplication这一个注解就可以.

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这个不用多说,mapper的映射路径

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这个spring.datasource是和properties文件前缀匹配.

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这个是xml的映射.

最终的目录结构:

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这个yml文件是空的, 里边也可以配置内容,但一般我们都习惯在properties里面配置.

 

接下来是controller,service,mapper, 也可以用mybatis-generator自动生成

首先，UserController.java

            import
             com.alibaba.fastjson.JSONArray;

            import
             com.xu.boot.model.User;

            import
             com.xu.boot.service.UserService;

            import
             org.apache.catalina.servlet4preview.http.HttpServletRequest;

            import
             org.apache.log4j.Logger;

            import
             org.springframework.beans.factory.annotation.Autowired;

            import
             org.springframework.web.bind.annotation.RequestMapping;

            import
             org.springframework.web.bind.annotation.ResponseBody;

            import
             org.springframework.web.bind.annotation.RestController;

@RestController

            public
            class
             UserController {

    
            private Logger logger = Logger.getLogger(UserController.class);

    @Autowired
    private UserService userService;

    @RequestMapping("/getUserById")
    @ResponseBody
    public User getUserById(HttpServletRequest request) {
        int id = Integer.parseInt(request.getParameter("id"));
        User user = userService.getUserById(id);
        if(user!=null){
            logger.info(JSONArray.toJSON(user));
        }
        return user;
    }
}

 

然后是UserService.java

            import
             com.xu.boot.model.User;


            public
            interface
             UserService {
    User getUserById(
            int
             id);
}

 

然后UserServiceImpl.java

            import
             com.xu.boot.mapper.UserMapper;

            import
             com.xu.boot.model.User;

            import
             com.xu.boot.service.UserService;

            import
             org.springframework.beans.factory.annotation.Autowired;

            import
             org.springframework.stereotype.Service;

@Service

            public
            class UserServiceImpl implements UserService {

    @Autowired
    UserMapper mapper;

    @Override
    public User getUserById(int id) {
        return mapper.getUserById(id);
    }
}

 

然后UserMapper.java

            import
             com.xu.boot.model.User;


            public
            interface
             UserMapper {
    User getUserById(
            int
             id);
}

 

然后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.xu.boot.mapper.UserMapper"
            >
            <
            select 
            id
            ="getUserById"
             resultType
            ="com.xu.boot.model.User"
             parameterType
            ="java.lang.Integer"
            >
            
        select name, age,password from user WHERE id=#{id,jdbcType=INTEGER};
    
            </
            select
            >
            </
            mapper
            >

 

接下来启动Application, 运行main方法.在浏览器输入http://localhost:9090/getUserById?id=1

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 转自：http://www.cnblogs.com/-xuzhankun/p/6627424.html

原文：http://www.cnblogs.com/zjoch/p/7615842.html

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