springboot整合mybatis增删改查（四）：完善增删改查及整合swgger2

接下来就是完成增删改查的功能了，首先在config包下配置Druid数据连接池,在配置之前先把相关配置在application.preperties中完善

application.preperties

# 下面为连接池的补充设置，应用到上面所有数据源中
# 初始化大小，最小，最大
spring.datasource.initialSize=5
spring.datasource.minIdle=5
spring.datasource.maxActive=30
# 配置获取连接等待超时的时间
spring.datasource.maxWait=60000
# 配置间隔多久才进行一次检测，检测需要关闭的空闲连接，单位是毫秒
spring.datasource.timeBetweenEvictionRunsMillis=60000
# 配置一个连接在池中最小生存的时间，单位是毫秒
spring.datasource.minEvictableIdleTimeMillis=300000
spring.datasource.validationQuery=SELECT 1 FROM DUAL
spring.datasource.testWhileIdle=true
spring.datasource.testOnBorrow=false
spring.datasource.testOnReturn=false
# 打开PSCache，并且指定每个连接上PSCache的大小
spring.datasource.poolPreparedStatements=true
spring.datasource.maxPoolPreparedStatementPerConnectionSize=20
# 配置监控统计拦截的filters，去掉后监控界面sql无法统计，'wall'用于防火墙
spring.datasource.filters=stat,wall,log4j
# 通过connectProperties属性来打开mergeSql功能；慢SQL记录
spring.datasource.connectionProperties=druid.stat.mergeSql=true;druid.stat.slowSqlMillis=5000
# 合并多个DruidDataSource的监控数据
spring.datasource.useGlobalDataSourceStat=true
# Druid 监控 Servlet 配置参数
spring.datasource.druidRegistrationUrl: /druid/* 
spring.datasource.resetEnable: true 
spring.datasource.loginUsername: admin
spring.datasource.loginPassword: 1234
# Druid 监控过滤相关配置参数
spring.datasource.filtersUrlPatterns: /* 
spring.datasource.exclusions: '*.js,*.gif,*.jpg,*.jpeg,*.png,*.css,*.ico,*.jsp,/druid/*'
spring.datasource.sessionStatMaxCount: 2000 
spring.datasource.sessionStatEnable: true 
spring.datasource.principalSessionName: session_user_key 
spring.datasource.profileEnable: true
#druid datasouce database settings end

上面配置完之后开始完成Druid数据连接池配置

在config包->新建DruidDbConfig类

DruidDBConfig类

@Configuration
public class DruidDBConfig {
   // private Logger logger = LoggerFactory.getLogger(DruidDBConfig.class);

    @Value("${spring.datasource.driver-class-name}")
    private String driverClassName;

    @Value("${spring.datasource.url}")
    private String dbUrl;

    @Value("${spring.datasource.username}")
    private String username;

    @Value("${spring.datasource.password}")
    private String password;

    @Value("${spring.datasource.initialSize}")
    private int initialSize;

    @Value("${spring.datasource.minIdle}")
    private int minIdle;

    @Value("${spring.datasource.maxActive}")
    private int maxActive;

    @Value("${spring.datasource.maxWait}")
    private int maxWait;

    @Value("${spring.datasource.timeBetweenEvictionRunsMillis}")
    private int timeBetweenEvictionRunsMillis;

    @Value("${spring.datasource.minEvictableIdleTimeMillis}")
    private int minEvictableIdleTimeMillis;

    @Value("${spring.datasource.validationQuery}")
    private String validationQuery;

    @Value("${spring.datasource.testWhileIdle}")
    private boolean testWhileIdle;

    @Value("${spring.datasource.testOnBorrow}")
    private boolean testOnBorrow;

    @Value("${spring.datasource.testOnReturn}")
    private boolean testOnReturn;

    @Value("${spring.datasource.poolPreparedStatements}")
    private boolean poolPreparedStatements;

    @Value("${spring.datasource.maxPoolPreparedStatementPerConnectionSize}")
    private int maxPoolPreparedStatementPerConnectionSize;

    @Value("${spring.datasource.filters}")
    private String filters;

    @Value("{spring.datasource.connectionProperties}")
    private String connectionProperties;

    @Bean     //声明其为Bean实例
    @Primary  //在同样的DataSource中，首先使用被标注的DataSource
    public DataSource dataSource(){
       DruidDataSource datasource = new DruidDataSource();

        datasource.setUrl(this.dbUrl);
        datasource.setUsername(username);
        datasource.setPassword(password);
        datasource.setDriverClassName(driverClassName);

        //configuration
        datasource.setInitialSize(initialSize);
        datasource.setMinIdle(minIdle);
        datasource.setMaxActive(maxActive);
        datasource.setMaxWait(maxWait);
        datasource.setTimeBetweenEvictionRunsMillis(timeBetweenEvictionRunsMillis);
        datasource.setMinEvictableIdleTimeMillis(minEvictableIdleTimeMillis);
        datasource.setValidationQuery(validationQuery);
        datasource.setTestWhileIdle(testWhileIdle);
        datasource.setTestOnBorrow(testOnBorrow);
        datasource.setTestOnReturn(testOnReturn);
        datasource.setPoolPreparedStatements(poolPreparedStatements);
        datasource.setMaxPoolPreparedStatementPerConnectionSize(maxPoolPreparedStatementPerConnectionSize);
        try {
            datasource.setFilters(filters);
        } catch (SQLException e) {
          //  logger.error("druid configuration initialization filter", e);
        }
        datasource.setConnectionProperties(connectionProperties);

        return datasource;
    }
}

上述配置中的日志已经注释了，如果需要配置可以在resources中加入logback-spring.xml：

resources->logback-spring.xml

logback-spring.xml

<?xml version="1.0" encoding="UTF-8"?>
<configuration scan="true" scanPeriod="60 seconds" debug="false">
    <contextName>logback</contextName>
    <!--自己定义一个log.path用于说明日志的输出目录-->
    <property name="log.path" value="/log/jiangfeixiang/"/>
    <!--输出到控制台-->
    <appender name="console" class="ch.qos.logback.core.ConsoleAppender">
        <!-- <filter class="ch.qos.logback.classic.filter.ThresholdFilter">
             <level>ERROR</level>
         </filter>-->
        <encoder>
            <pattern>%d{HH:mm:ss.SSS} %contextName [%thread] %-5level %logger{36} - %msg%n</pattern>
        </encoder>
    </appender>

    <!--输出到文件-->
    <appender name="file" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <fileNamePattern>${log.path}/logback.%d{yyyy-MM-dd}.log</fileNamePattern>
        </rollingPolicy>
        <encoder>
            <pattern>%d{HH:mm:ss.SSS} %contextName [%thread] %-5level %logger{36} - %msg%n</pattern>
        </encoder>
    </appender>

    <root level="debug">
        <appender-ref ref="console"/>
        <appender-ref ref="file"/>
    </root>

    <!-- logback为java中的包 -->
    <logger name="com.example.springboootmybatis.controller"/>
</configuration>

UserServiec接口

public interface UserService {
    /**
     * 查询所有用户
     */
    public List<User> getAllUser();

    /**
     * 保存用户
     * @param user
     */
    void saveUser(User user);

    /**
     * 根据id查询用户
     */
    User getById(Integer id);

    /**
     * 校验用户名
     * @param userName
     * @return
     */
    Boolean checkUserName(String userName);

    /**
     * 修改用户
     * @param user
     */
    void updateUser(User user);

    /**
     * 根据id删除用户
     * @param id
     */
    void deleteUser(Integer id);

    /**
     * 全选删除
     * @param useridList
     */
    void deleteBatchUser(List<Integer> useridList);
}

UserServiceImpl实现类

@Service
@Transactional
public class UserServiceImpl implements UserService {
    //注入
    @Autowired
    private UserMapper userMapper;

    /**
     * 查询所有用户
     */
    @Override
    public List<User> getAllUser() {
        List<User> users = userMapper.selectByExample(null);
        return users;
    }

    /**
     * 根据id查询用户
     */
    @Override
    public User getById(Integer id) {
        User user = userMapper.selectByPrimaryKey(id);
        return user;
    }

    /**
     * 添加用户
     * @param user
     */
    @Override
    public void saveUser(User user) {
        userMapper.insertSelective(user);
    }

    /**
     * 校验用户名是否存在
     * @param userName
     * @return
     * 数据库没有这条记录，count==0，返回true
     */
    @Override
    public Boolean checkUserName(String userName) {
        UserExample example=new UserExample();
        UserExample.Criteria criteria=example.createCriteria();
        criteria.andUsernameEqualTo(userName);
        long count=userMapper.countByExample(example);
        if(count==0){
            return true;
        }
        return false;
    }

    /**
     * 修改用户
     * @param user
     */
    @Override
    public void updateUser(User user) {
        userMapper.updateByPrimaryKeySelective(user);
    }

    /**
     * 根据id删除（单个）
     * @param id
     */
    @Override
    public void deleteUser(Integer id) {
        userMapper.deleteByPrimaryKey(id);
    }


    /**
     * 批量删除
     * @param useridList
     */
    @Override
    public void deleteBatchUser(List<Integer> useridList) {
      /*  UserExample example=new UserExample();
        UserExample.Criteria criteria=example.createCriteria();
        criteria.andUseridIn(useridList);
        userMapper.deleteByExample(example);*/

    }
}

UserController

@RestController
@RequestMapping(value = "/user")
public class UserController {
    //注入
    @Autowired
    private UserService userService;

    /**
     * 查询所有用户
     */
    @ApiOperation(value="获取用户列表")
    @RequestMapping(value = "/user",method = RequestMethod.GET)
    public List<User> getListAll(){
        List<User> listAll = userService.getAllUser();
        return listAll;
    }

    /**
     * 用户保存
     * @return
     */
    @ApiOperation(value = "添加用户",notes = "根据user添加用户")
    @ApiImplicitParam(name = "user",value = "用户user",required = true,dataType = "User")
    @RequestMapping(value = "/users",method = RequestMethod.POST)
    public String saveUser(@RequestBody User user){
        userService.saveUser(user);
        return "success";
    }

    /**
     * 根据id查询
     */
    @ApiOperation(value = "根据id查询")
    @ApiImplicitParam(name = "id",value = "用户id")
    @RequestMapping(value = "/{id}",method = RequestMethod.GET)
    public User getById(@PathVariable("id") Integer id){
        User user = userService.getById(id);
        return user;
    }

    /**
     * 校验用户名
     * @param username
     * @return
     */
    @ApiOperation(value = "校验用户名")
    @ApiImplicitParam(name = "userName",value = "用户名",required = true,dataType = "String")
    @RequestMapping(value = "/{username}",method = RequestMethod.POST)
    public Boolean checkUserName(@PathVariable("username")String username){
        Boolean aboolean = userService.checkUserName(username);
        if (aboolean){
            return true;
        }else {
            return false;
        }
    }

    /**
     * 修改用户
     * @param user
     */
    @ApiOperation(value = "修改用户")
    @ApiImplicitParam(name = "user",value = "用户",required = true,dataType = "User")
    @RequestMapping(value = "/user",method = RequestMethod.PUT)
    public String updateUser(@RequestBody User user){
        userService.updateUser(user);
        return "success";
    }

    /**
     * 根据id删除用户
     */
    @ApiOperation(value = "根据id删除用户")
    @ApiImplicitParam(name = "id",value = "用户id",required = true,dataType = "Integer")
    @RequestMapping(value = "/{id}",method = RequestMethod.DELETE)
    public String deleteUser(@PathVariable Integer id){
        userService.deleteUser(id);
        return "success";
    }
}

controller类中使用了swgger2如下：

springboot中整合swgger2

pom.xml

<!--swgger2-->
        <dependency>
            <groupId>io.springfox</groupId>
            <artifactId>springfox-swagger2</artifactId>
            <version>2.2.2</version>
        </dependency>
        <dependency>
            <groupId>io.springfox</groupId>
            <artifactId>springfox-swagger-ui</artifactId>
            <version>2.2.2</version>
        </dependency>

springbootmybatis包下创建SwaggerConfig.java

SwaggerConfig

@Configuration
@EnableSwagger2
public class SwaggerConfig {
    @Bean
    public Docket createRestApi() {
        ApiInfo apiInfo = new ApiInfoBuilder()
                .title("使用Swagger2构建RESTful APIs") //标题
                .description("客户端与服务端接口文档") //描述
                .termsOfServiceUrl("http://localost:8080") //域名地址
                .contact("姜飞祥") //作者
                .version("1.0.0") //版本号
                .build();

        return new Docket(DocumentationType.SWAGGER_2)
                .apiInfo(apiInfo)
                .select()
                .apis(RequestHandlerSelectors.basePackage("com.example.springbootmybatis"))
                .paths(PathSelectors.any())
                .build();
    }

}

以上就算完成了，写的不好请见谅。具体测试请参考下面的springboot整合swgger2,之后访问http://localhost:8080/swagger-ui.html即可，和

备注：

• springboot整合swgger2参考:https://www.jianshu.com/p/57a4381a2b45
• MyBatis的Mapper接口以及Example的实例函数及详解：https://blog.csdn.net/biandous/article/details/65630783
• Mybatis Generator最完整配置详解：https://www.jianshu.com/p/e09d2370b796