spring+mybaties

項目目錄：

 

mapper 文件夾沒用

pom:

<?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>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.0.5.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.springboot</groupId>
    <artifactId>springboot</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>
    <name>springboot</name>
    <description>Demo project for Spring Boot</description>

    <properties>
        <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>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-thymeleaf</artifactId>
        </dependency>


        <!-- 添加對jsp視圖解析的支持 -->
        <dependency>
            <groupId>org.apache.tomcat.embed</groupId>
            <artifactId>tomcat-embed-jasper</artifactId>
        </dependency>
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>jstl</artifactId>
        </dependency>
        <!-- 只需引入spring-boot-devtools 即可實現熱部署 -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
        </dependency>

        <!-- Json包 -->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>fastjson</artifactId>
            <version>1.2.16</version>
        </dependency>


        <!--mybaties 依賴-->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
        </dependency>
        <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
            <version>1.3.1</version>
        </dependency>


        <!--引入druid數據源-->
        <!-- https://mvnrepository.com/artifact/com.alibaba/druid -->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid</artifactId>
            <version>1.1.8</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-jdbc</artifactId>
        </dependency>


    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <dependencies>
                    <!-- 熱部署 -->
                    <dependency>
                        <groupId>org.springframework</groupId>
                        <artifactId>springloaded</artifactId>
                        <version>1.2.6.RELEASE</version>
                    </dependency>
                </dependencies>
            </plugin>
        </plugins>
    </build>


</project>

entity:

package com.springboot.springboot.entity;

import org.apache.ibatis.annotations.Mapper;

/**
 * @Author: wj
 * @Date: 2018/12/10 11:06
 * @Version 1.0
 */
public class User {
    private String name;


    public String getName() {
        return name;
    }

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

dao:

package com.springboot.springboot.dao;

import com.springboot.springboot.entity.User;
import org.apache.ibatis.annotations.Mapper;
import org.apache.ibatis.annotations.Param;
import org.apache.ibatis.annotations.Select;

import java.util.List;

/**
 * @Author: wj
 * @Date: 2018/12/10 11:09
 * @Version 1.0
 */
@Mapper
public interface UserDao {
    @Select("SELECT name FROM user where name = #{id}")
    List<User> userList(@Param("id") String id);
}

service:

package com.springboot.springboot.service;

import com.springboot.springboot.entity.User;

import java.util.List;

/**
 * @Author: wj
 * @Date: 2018/12/10 11:07
 * @Version 1.0
 */
public interface UserService {
    public List<User> getUser(String id);
}

imp:

package com.springboot.springboot.service.imp;

import com.springboot.springboot.dao.UserDao;
import com.springboot.springboot.entity.User;
import com.springboot.springboot.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;

/**
 * @Author: wj
 * @Date: 2018/12/10 11:08
 * @Version 1.0
 */
@Service
public class UserServiceImp  implements UserService {
    @Autowired
    private UserDao userDao;
    @Override
    public List<User> getUser(String id) {
        return userDao.userList(id);
    }
}

controller:

package com.springboot.springboot.controller;

import com.springboot.springboot.entity.User;
import com.springboot.springboot.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;

import java.util.List;

/**
 * @Author: wj
 * @Date: 2018/12/10 11:11
 * @Version 1.0
 */
@RestController
@RequestMapping("/user")
public class UserController {
    @Autowired
    private UserService userService;

    @RequestMapping("/getUser")
    public List<User> getUser(@RequestParam("id") String id){
        System.out.println(userService.getUser(id).get(0).getName());
      return   userService.getUser(id);
    }

}

啓動訪問以及結果：