【java】【重构一】分模块开发设计实战

目录

一、创建项目 

1、先创建一个空项目

2、设置项目SDK等

二、创建父模块 选择springboot

1、创建父模块parent

2、删除多余文件，只保留pom.xml

3、修改pom.xml

4、将部分公共依赖加入到pom

三、创建实体类子模块entity

1、创建实体类子模块entity

2、删除无关文件

3、修改pom

4、复制实体类文件entity到目录下（没有就创建）

四、创建工具类子模块utils

1、创建工具类子模块utils

 2、删除多余文件，只保留pom.xml

3、修改pom.xml 

4、复制实体类文件utils到目录下（没有就创建）

五、创建web项目子模块web-management

1、创建web项目子模块web-management

2、修改pom.xml

3、复制web项目文件

4、新建resources

5、resources新建目录com/bocai/mapper

6、复制相关文件

7、 复制启动程序

六、启动服务

1、启动后端AppApplication

2、启动ngnix 

3、验证数据

---

前言：接《[JavaWeb]【十四】web后端开发-MAVEN高级》开始从头开始分模块设计java项目

一、创建项目 

1、先创建一个空项目

2、设置项目SDK等

SDK选择1.8，Language Level 选择8。 

二、创建父模块 选择springboot

1、创建父模块parent

2、删除多余文件，只保留pom.xml

3、修改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 https://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><!-- 1、修改为2.7.5 --><version>2.7.5</version><relativePath/> <!-- lookup parent from repository --></parent><groupId>com.bocai</groupId><artifactId>bocai-parent</artifactId><version>0.0.1-SNAPSHOT</version>	<!-- 2、新增设置打包模式为pom  --><packaging>pom</packaging><!--   3、注释 name与description --><!--<name>bocai-parent</name><description>bocai-parent</description>--><properties><java.version>1.8</java.version></properties><dependencies><!--  4、注释以下依赖  --><!--<dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter</artifactId></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-test</artifactId><scope>test</scope></dependency>-->
</dependencies><!-- 5、注释 build   --><!--<build><plugins><plugin><groupId>org.springframework.boot</groupId><artifactId>spring-boot-maven-plugin</artifactId></plugin></plugins></build>--></project>

4、将部分公共依赖加入到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 https://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><!-- 1、修改为2.7.5 --><version>2.7.5</version><relativePath/> <!-- lookup parent from repository --></parent><groupId>com.bocai</groupId><artifactId>bocai-parent</artifactId><version>0.0.1-SNAPSHOT</version><!-- 2、新增设置打包模式为pom  --><packaging>pom</packaging><!--   3、注释 name与description --><!--<name>bocai-parent</name><description>bocai-parent</description>--><properties><java.version>1.8</java.version></properties><dependencies><!--  6、 加入的公共依赖  --><!--   lombok --><dependency><groupId>org.projectlombok</groupId><artifactId>lombok</artifactId></dependency><!--  4、注释以下依赖  --><!--<dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter</artifactId></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-test</artifactId><scope>test</scope></dependency>--></dependencies><!-- 5、注释 build   --><!--<build><plugins><plugin><groupId>org.springframework.boot</groupId><artifactId>spring-boot-maven-plugin</artifactId></plugin></plugins></build>--></project>

三、创建实体类子模块entity

1、创建实体类子模块entity

2、删除无关文件

3、修改pom

<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>com.bocai</groupId><artifactId>bocai-parent</artifactId><version>0.0.1-SNAPSHOT</version><relativePath>../bocai-parent/pom.xml</relativePath></parent><artifactId>bocai-entity</artifactId><!--  1、注释 打包方式（不确定）--><!--<packaging>jar</packaging> --><name>bocai-entity</name><url>http://maven.apache.org</url><properties><project.build.sourceEncoding>UTF-8</project.build.sourceEncoding></properties><dependencies><!-- 2、  注释 junit  --><!--<dependency><groupId>junit</groupId><artifactId>junit</artifactId><version>3.8.1</version><scope>test</scope></dependency>--></dependencies>
</project>

4、复制实体类文件entity到目录下（没有就创建）

四、创建工具类子模块utils

1、创建工具类子模块utils

 

 2、删除多余文件，只保留pom.xml

略

3、修改pom.xml 

<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>com.bocai</groupId><artifactId>bocai-parent</artifactId><version>0.0.1-SNAPSHOT</version><relativePath>../bocai-parent/pom.xml</relativePath></parent><artifactId>bocai-utils</artifactId><!--  1、注释 打包方式（不确定）--><!--<packaging>jar</packaging> --><name>bocai-utils</name><url>http://maven.apache.org</url><properties><project.build.sourceEncoding>UTF-8</project.build.sourceEncoding></properties><dependencies><!-- 2、  注释 junit  --><!--<dependency><groupId>junit</groupId><artifactId>junit</artifactId><version>3.8.1</version><scope>test</scope></dependency>--><!-- 3、加入依赖 --><!--   web起步依赖 --><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId></dependency><!--        阿里云OSS依赖--><dependency><groupId>com.aliyun.oss</groupId><artifactId>aliyun-sdk-oss</artifactId><version>3.15.1</version></dependency><dependency><groupId>javax.xml.bind</groupId><artifactId>jaxb-api</artifactId><version>2.3.1</version></dependency><dependency><groupId>javax.activation</groupId><artifactId>activation</artifactId><version>1.1.1</version></dependency><!-- no more than 2.3.3--><dependency><groupId>org.glassfish.jaxb</groupId><artifactId>jaxb-runtime</artifactId><version>2.3.3</version></dependency><!--JWT令牌--><dependency><groupId>io.jsonwebtoken</groupId><artifactId>jjwt</artifactId><version>0.9.1</version></dependency></dependencies>
</project>

4、复制实体类文件utils到目录下（没有就创建）

五、创建web项目子模块web-management

1、创建web项目子模块web-management

2、修改pom.xml

核心是引入本文的子模块entity和utils

<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>com.bocai</groupId><artifactId>bocai-parent</artifactId><version>0.0.1-SNAPSHOT</version><relativePath>../bocai-parent/pom.xml</relativePath></parent><artifactId>bocai-web-management</artifactId><!--  1、注释 打包方式（不确定）--><!--<packaging>jar</packaging> --><name>bocai-web-management</name><url>http://maven.apache.org</url><properties><project.build.sourceEncoding>UTF-8</project.build.sourceEncoding></properties><dependencies><!-- 2、  注释 junit  --><!--<dependency><groupId>junit</groupId><artifactId>junit</artifactId><version>3.8.1</version><scope>test</scope></dependency>--><!-- 3、加入 子模块依赖 --><dependency><groupId>com.bocai</groupId><artifactId>bocai-entity</artifactId><version>0.0.1-SNAPSHOT</version></dependency><dependency><groupId>com.bocai</groupId><artifactId>bocai-utils</artifactId><version>0.0.1-SNAPSHOT</version></dependency><!-- 4、加入依赖 --><!--   web起步依赖 --><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId></dependency><!--   mybatis起步依赖 --><dependency><groupId>org.mybatis.spring.boot</groupId><artifactId>mybatis-spring-boot-starter</artifactId><version>2.3.1</version></dependency><!--   mysql驱动 --><dependency><groupId>com.mysql</groupId><artifactId>mysql-connector-j</artifactId><scope>runtime</scope></dependency><!--   springboot单元测试 --><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-test</artifactId><scope>test</scope></dependency><!-- PageHelper分页插件https://mvnrepository.com/artifact/com.github.pagehelper/pagehelper-spring-boot-starter --><dependency><groupId>com.github.pagehelper</groupId><artifactId>pagehelper-spring-boot-starter</artifactId><version>1.4.6</version></dependency><!--fastJSON--><dependency><groupId>com.alibaba</groupId><artifactId>fastjson</artifactId><version>1.2.76</version></dependency><!--AOP--><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-aop</artifactId></dependency></dependencies><build><plugins><plugin><groupId>org.springframework.boot</groupId><artifactId>spring-boot-maven-plugin</artifactId><configuration><excludes><exclude><groupId>org.projectlombok</groupId><artifactId>lombok</artifactId></exclude></excludes></configuration></plugin></plugins></build>
</project>

 

3、复制web项目文件

部分文件可能会报错，主要体现在  web起步依赖 ，到每个文件单独处理一下

4、新建resources

5、resources新建目录com/bocai/mapper

6、复制相关文件

7、 复制启动程序

package com.bocai;import lombok.extern.slf4j.Slf4j;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.web.servlet.ServletComponentScan;@Slf4j
@ServletComponentScan  //开启了对servlet组件支持  Filter
@SpringBootApplication
public class AppApplication {public static void main(String[] args) {SpringApplication.run(AppApplication.class, args);log.info("============ 服务启动完成！=====================");}}

 AppApplicationTests 注释了一个测试代码，打包的时候报错

package com.bocai;import io.jsonwebtoken.Claims;
import io.jsonwebtoken.Jwts;
import io.jsonwebtoken.SignatureAlgorithm;
import org.junit.jupiter.api.Test;
import org.springframework.boot.test.context.SpringBootTest;import java.util.Date;
import java.util.HashMap;
import java.util.Map;@SpringBootTest
class AppApplicationTests {@Testvoid contextLoads() {}/*** 生成Jwt令牌*/@Testpublic void testGenJwt(){Map<String, Object> claims = new HashMap<>();claims.put("id",1);claims.put("name","bocai");String jwt = Jwts.builder().signWith(SignatureAlgorithm.HS256, "bocai") // 签名算法 算法有哪些上官网.setClaims(claims) //自定义的内容（载荷）.setExpiration(new Date(System.currentTimeMillis() + 3600* 1000)) // 设置有效期为1h.compact();System.out.println(jwt);}/*** 解析Jwt, parseClaimsJws(换成上面生成的jwt)*/
//    @Test
//    public void testPareJwt(){
//        Claims claims = Jwts.parser()
//                .setSigningKey("bocai") //runa要与前面生成一致
//                .parseClaimsJws("eyJhbGciOiJIUzI1NiJ9.eyJuYW1lIjoiYm9jYWkiLCJpZCI6MSwiZXhwIjoxNjk3NTM5MTQzfQ.kh_8USqITQHQvnOpWuF8Z7BB0x_BVhfZvOgF1JMcj8o")
//                .getBody();
//        System.out.println(claims);
//
//    }}

六、启动服务

1、启动后端AppApplication

2、启动ngnix 

3、验证数据