SpringBoot开发规范部分通用模板+idea配置【项目通用-1】

ゝ一世哀愁。 2024-03-27 02:00 74阅读 0赞

## SpringBoot开发规范通用模板 ##

### 1 分页插件使用 ###

> 通过MybatisPlus配置分页插件拦截器

@Configuration
    @MapperScan("com.xuecheng.content.mapper") //拦截的mapper层
    public class MybatisPlusConfig {
        
    
    
        //定义分页的拦截器
        @Bean
        public MybatisPlusInterceptor getMybatisPlusInterceptor() {
        
            MybatisPlusInterceptor mybatisPlusInterceptor = new MybatisPlusInterceptor();
            mybatisPlusInterceptor.addInnerInterceptor(new PaginationInnerInterceptor(DbType.MYSQL));
            return mybatisPlusInterceptor;
        }
    
    }

### 2 通用返回结果 ###

#### 2.1 带分页通用返回结果 ####

*  PageResult：

@Data
    @ToString
    public class PageResult<T> {
        
        // 数据列表
        private List<T> items;
    
        //总记录数
        private long counts;
    
        //当前页码
        private long page;
    
        //每页记录数
        private long pageSize;
    
        public PageResult(List<T> items, long counts, long page, long pageSize) {
        
            this.items = items;
            this.counts = counts;
            this.page = page;
            this.pageSize = pageSize;
        }
    
    }

#### 2.2 分页请求参数 ####

PageParams（分页请求参数）：

@Data
    @ToString
    public class PageParams {
        
    
        //当前页码默认值
        public static final long DEFAULT_PAGE_CURRENT = 1L;
        //每页记录数默认值
        public static final long DEFAULT_PAGE_SIZE = 10L;
    
        @ApiModelProperty("当前页码")
        //当前页码
        private Long pageNo = DEFAULT_PAGE_CURRENT;
    
        @ApiModelProperty("每页记录数")
        //每页记录数默认值
        private Long pageSize = DEFAULT_PAGE_SIZE;
    
        public PageParams() {
        
    
        }
    
        public PageParams(long pageNo, long pageSize) {
        
            this.pageNo = pageNo;
            this.pageSize = pageSize;
        }
    }

#### 2.3 日志处理 ####

*  日志配置文件  
    log4j2-dev.xml：

<?xml version="1.0" encoding="UTF-8"?>
    <Configuration monitorInterval="180" packages="">
        <properties>
            <property name="logdir">logs</property>
            <property name="PATTERN">%date{
        YYYY-MM-dd HH:mm:ss,SSS} %level [%thread][%file:%line] - %msg%n%throwable</property>
        </properties>
        <Appenders>
            <Console name="Console" target="SYSTEM_OUT">
                <PatternLayout pattern="${PATTERN}"/>
            </Console>
    
            <RollingFile name="ErrorAppender" fileName="${logdir}/error.log"
                filePattern="${logdir}/$${date:yyyy-MM-dd}/error.%d{yyyy-MM-dd-HH}.log" append="true">
                <PatternLayout pattern="${PATTERN}"/>
                <ThresholdFilter level="ERROR" onMatch="ACCEPT" onMismatch="DENY"/>
                <Policies>
                    <TimeBasedTriggeringPolicy interval="1" modulate="true" />
                </Policies>
            </RollingFile>
    
            <RollingFile name="DebugAppender" fileName="${logdir}/info.log"
                filePattern="${logdir}/$${date:yyyy-MM-dd}/info.%d{yyyy-MM-dd-HH}.log" append="true">
                <PatternLayout pattern="${PATTERN}"/>
                <ThresholdFilter level="DEBUG" onMatch="ACCEPT" onMismatch="DENY"/>
                <Policies>
                    <TimeBasedTriggeringPolicy interval="1" modulate="true" />
                </Policies>
            </RollingFile>
            
            
             <Async name="AsyncAppender" includeLocation="true">
                <AppenderRef ref="ErrorAppender"/>
                <AppenderRef ref="DebugAppender"/>
            </Async>
        </Appenders>
        
        <Loggers>
             
            <logger name="org.springframework" level="INFO">
            </logger>
            <logger name="org.mybatis" level="INFO">
            </logger>
            <logger name="cn.zi.wanxinp2p.consumer.mapper" level="DEBUG">
            </logger>
    
            <logger name="springfox" level="INFO">
            </logger>
    		<logger name="org.apache.http" level="INFO">
            </logger>
            <logger name="com.netflix.discovery" level="INFO">
            </logger>
            
            <logger name="RocketmqCommon"  level="INFO" >
    		</logger>
    		
    		<logger name="RocketmqRemoting" level="INFO"  >
    		</logger>
    		
    		<logger name="RocketmqClient" level="WARN">
    		</logger>
    
            <logger name="org.dromara.hmily" level="WARN">
            </logger>
    
            <logger name="org.dromara.hmily.lottery" level="WARN">
            </logger>
    
            <logger name="org.dromara.hmily.bonuspoint" level="WARN">
            </logger>
    		
            
            
            
            
            
            
            
            
            <Root level="DEBUG" includeLocation="true">
                <AppenderRef ref="AsyncAppender"/>
                <AppenderRef ref="Console"/>
                <AppenderRef ref="DebugAppender"/>
            </Root>
        </Loggers>
    </Configuration>

*  application.yml配置：

# 日志文件配置路径
    logging:
      config: classpath:log4j2-dev.xml

### 3 全局异常处理 ###

> 在多模块（微服务项目中一般放在base项目中）  
> [微服务项目搭建解析][Link 1]

#### 3.1 通用异常 ####

public enum CommonError {
        
    
    	UNKOWN_ERROR("执行过程异常，请重试。"),
    	PARAMS_ERROR("非法参数"),
    	OBJECT_NULL("对象为空"),
    	QUERY_NULL("查询结果为空"),
    	REQUEST_NULL("请求参数为空");
    
    	private String errMessage;
    
    	public String getErrMessage() {
        
    		return errMessage;
    	}
    
    	private CommonError( String errMessage) {
        
    		this.errMessage = errMessage;
    	}
    
    }

#### 3.2 错误响应参数包装 ####

/**
     * 错误响应参数包装
     */
    public class RestErrorResponse implements Serializable {
        
    
        private String errMessage;
    
        public RestErrorResponse(String errMessage){
        
            this.errMessage= errMessage;
        }
    
        public String getErrMessage() {
        
            return errMessage;
        }
    
        public void setErrMessage(String errMessage) {
        
            this.errMessage = errMessage;
        }
    }

#### 3.3 自定义异常 ####

public class XueChengPlusException extends RuntimeException {
        
    
        private String errMessage;
    
        public XueChengPlusException() {
        
            super();
        }
    
        public XueChengPlusException(String message) {
        
            super(message);
            this.errMessage = message;
        }
    
        public String getErrMessage(){
        
            return errMessage;
        }
    
        public static void cast(String errMessage){
        
            throw new XueChengPlusException(errMessage);
        }
        public static void cast(CommonError commonError){
        
            throw new XueChengPlusException(commonError.getErrMessage());
        }
    }

#### 3.4 全局异常处理器 ####

@Slf4j
     @ControllerAdvice//控制器增强
    public class GlobalExceptionHandler {
        
    
      //处理XueChengPlusException异常  此类异常是程序员主动抛出的，可预知异常
      @ResponseBody//将信息返回为 json格式
      @ExceptionHandler(XueChengPlusException.class)//此方法捕获XueChengPlusException异常
      @ResponseStatus(HttpStatus.INTERNAL_SERVER_ERROR)//状态码返回500
      public RestErrorResponse doXueChengPlusException(XueChengPlusException e){
        
    
       log.error("捕获异常：{}",e.getErrMessage());
       e.printStackTrace();
    
       String errMessage = e.getErrMessage();
    
       return new RestErrorResponse(errMessage);
      }
    
    
      //捕获不可预知异常 Exception
      @ResponseBody//将信息返回为 json格式
      @ExceptionHandler(Exception.class)//此方法捕获Exception异常
      @ResponseStatus(HttpStatus.INTERNAL_SERVER_ERROR)//状态码返回500
      public RestErrorResponse doException(Exception e){
        
    
       log.error("捕获异常：{}",e.getMessage());
       e.printStackTrace();
    
       return new RestErrorResponse(CommonError.UNKOWN_ERROR.getErrMessage());
      }
    
        @ResponseBody//将信息返回为 json格式
        @ExceptionHandler(MethodArgumentNotValidException.class)//此方法捕获MethodArgumentNotValidException异常
        @ResponseStatus(HttpStatus.INTERNAL_SERVER_ERROR)//状态码返回500
        public RestErrorResponse doMethodArgumentNotValidException(MethodArgumentNotValidException e){
        
    
            BindingResult bindingResult = e.getBindingResult();
            //校验的错误信息
            List<FieldError> fieldErrors = bindingResult.getFieldErrors();
            //收集错误
            StringBuffer errors = new StringBuffer();
            fieldErrors.forEach(error->{
        
                errors.append(error.getDefaultMessage()).append(",");
            });
    
            return new RestErrorResponse(errors.toString());
        }
    
    }

### 4 HttpClient插件使用 ###

*  在idea插件中下载httpclient
 *  编写对应环境配置文件`xxxx.json`，例如：

{
        
      "dev": {
        
        "access_token": "",
        "gateway_host": "localhost:63010",
        "content_host": "localhost:63040",
        "system_host": "localhost:63110",
        "media_host": "localhost:63050",
        "search_host": "localhost:63080",
        "auth_host": "localhost:63070",
        "checkcode_host": "localhost:63075",
        "learning_host": "localhost:63020"
      }
    }

*  点击controller中的图标，自动生成文件或自己创建`xxx.http`  
    ![在这里插入图片描述][5f46cd038e7d4466ab32f1533f033446.png]

### 课程查询接口
    POST {
        {
        content_host}}/content/course/list?pageNo=1&pageSize=2
    Content-Type: application/json
    
    {
        
      "auditStatus": "202004",
      "courseName": "",
      "publishStatus": ""
    }
    
    
    ### 课程分类 查询
    GET {
        {
        content_host}}/content/course-category/tree-nodes
    
    
    
    
    ### 上传文件
    POST {
        {
        media_host}}/media/upload/coursefile
    Content-Type: multipart/form-data; boundary=WebAppBoundary
    
    --WebAppBoundary
    Content-Disposition: form-data; name="filedata"; filename="2.jpg"
    Content-Type: application/octet-stream
    
    < d:/2.jpg

### 5 JSR校验 ###

#### 5.1 概念 ####

> JSR (Java Specification Requests） 是一套 JavaBean 参数校验的标准  
> 通过Java提供的注解，来达到参数校验效果
> 
>  *  @NotEmpty(message = “修改课程名称不能为空”,groups=\{ValidationGroups.Update.class\})
>  *  @NotEmpty(message = “适用人群不能为空”)
>  *  @Size(message = “适用人群内容过少”,min = 10)

#### 5.2 校验分组 ####

*  定义分组：

public class ValidationGroups {
        
    
     //用于添加校验
     public interface Inster{
        };
     //用于修改校验
     public interface Update{
        };
     public interface Delete{
        };
    
    }

*  controller中使用

> insert分组为例

@PostMapping("/course")
        public CourseBaseInfoDto createCourseBase(@RequestBody @Validated(ValidationGroups.Inster.class) AddCourseDto addCourseDto){
        
    
            Long companyId = 22L;
            return courseBaseInfoService.createCourseBase(companyId,addCourseDto);
        }

#### 5.3 实体类校验 ####

@Data
    @ToString
    @ApiModel(value="AddCourseDto", description="新增课程基本信息")
    public class AddCourseDto {
        
    
    
     @NotEmpty(message = "添加课程名称不能为空",groups={
        ValidationGroups.Inster.class})
     @NotEmpty(message = "修改课程名称不能为空",groups={
        ValidationGroups.Update.class})
     @ApiModelProperty(value = "课程名称", required = true)
     private String name;
    
     @NotEmpty(message = "适用人群不能为空")
     @Size(message = "适用人群内容过少",min = 10)
     @ApiModelProperty(value = "适用人群", required = true)
     private String users;

### 6 Idea通用配置 ###

#### 6.1 常用插件 ####

*  lombok
 *  HTTPClient
 *  Git、GitHub、Gitee、GitToolBox
 *  Lombok
 *  SpringBoot Initializr and Assistant
 *  Translation
 *  MybatisX
 *  GeneraterAllSetter
 *  JPA Buddy
 *  Alibaba Java Code Guidelines
 *  Translation
 *  Raindow Brackets
 *  HighlightBracketPair
 *  Maven helper
 *  Database Tools and SQL
 *  Alibaba Java Coding Guidelines（编码规范）
 *  MyBatisCodeHelper（直接查看SQL）

#### 6.2 文件模板 ####

##### ①mapper.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="">
        
        
    </mapper>

##### ②spring.xml #####

<?xml version="1.0" encoding="UTF-8"?>
    <beans xmlns="http://www.springframework.org/schema/beans"
           xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
           xmlns:p="http://www.springframework.org/schema/p"
           xmlns:c="http://www.springframework.org/schema/c"
           xsi:schemaLocation="http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans.xsd">
    
    </beans>

#### 6.3 tips ####

①鼠标控制代码大小

settins - editor - general - MouseControl(change font size...)

②file tepmlate

> settings - file and code templates - Files(添加class模板)

![在这里插入图片描述][8120d4e1c21947499f99f8ec42c651ac.png]  
class:

#if (${
        PACKAGE_NAME} && ${
        PACKAGE_NAME} != "")package ${
        PACKAGE_NAME};#end
    #parse("File Header.java")
    /**
     * @description TODO
     * @author zhouYi
     * @date ${DATE} ${TIME}
     * @version 
     */
    public class ${
        NAME} {
        
    }

interface:

#if (${
        PACKAGE_NAME} && ${
        PACKAGE_NAME} != "")package ${
        PACKAGE_NAME};#end
    #parse("File Header.java")
    
    /**
     * @description TODO
     * @author ${USER}
     * @date ${DATE} ${TIME}
     * @version 
     */
    public interface ${
        NAME} {
        
    }

③隐藏文件设置

![在这里插入图片描述][c0f6b439ea61406795d17c3f63e5c782.png]  
④自动删除无用导包  
![在这里插入图片描述][48155e8ffffb4d79ac7da079da6164c6.png]  
⑤开启自动生成UUID  
![在这里插入图片描述][3469249f7c014e1ab2fcd42682179257.png]

> 勾选上disable new inspections by default，否则会每次重启idea都会恢复默认设置

以前idea版本设置位置：  
![在这里插入图片描述][0614fd666b87426b9ec9f706ffd15836.png]

> 设置之后，在实现了Serializable的类上，通过alt+enter即可自动生成UID

![在这里插入图片描述][c4ed0cae6c3a4b42822f5e1800a7035e.png]

### 7 时间转换配置LocalDateTimeConfig ###

@Configuration
    public class LocalDateTimeConfig {
        
    
        /*
         * 序列化内容
         *   LocalDateTime -> String
         * 服务端返回给客户端内容
         * */
        @Bean
        public LocalDateTimeSerializer localDateTimeSerializer() {
        
            return new LocalDateTimeSerializer(DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss"));
        }
    
        /*
         * 反序列化内容
         *   String -> LocalDateTime
         * 客户端传入服务端数据
         * */
        @Bean
        public LocalDateTimeDeserializer localDateTimeDeserializer() {
        
            return new LocalDateTimeDeserializer(DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss"));
        }
    
    
        // 配置
        @Bean
        public Jackson2ObjectMapperBuilderCustomizer jackson2ObjectMapperBuilderCustomizer() {
        
            return builder -> {
        
                builder.serializerByType(LocalDateTime.class, localDateTimeSerializer());
                builder.deserializerByType(LocalDateTime.class, localDateTimeDeserializer());
            };
        }
    
    }

[Link 1]: https://editor.csdn.net/md/?articleId=128932735
[5f46cd038e7d4466ab32f1533f033446.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/27/7edf05daeeb748ca906b0cf9908cb5d1.png
[8120d4e1c21947499f99f8ec42c651ac.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/27/79ee5e49ee4c4f35b56eac81535bc1ec.png
[c0f6b439ea61406795d17c3f63e5c782.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/27/c344007fdc2341159fa146cecbcab47c.png
[48155e8ffffb4d79ac7da079da6164c6.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/27/9bd2b33d21544169a59155e5961099e1.png
[3469249f7c014e1ab2fcd42682179257.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/27/801a2c28287d43b791cf6f24253ef62a.png
[0614fd666b87426b9ec9f706ffd15836.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/27/3c77833f33b84547ac2b9cfca6ee1d92.png
[c4ed0cae6c3a4b42822f5e1800a7035e.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/27/7ea9d85551924574baa21ea88b9efcdd.png