SpringBoot進階教程(六十一)intellij idea project下建多個module搭建架構(下)
在上一篇文章《SpringBoot進階教程(六十)intellij idea project下建多個module(上)》中，我們已經介紹了在intellij idea中建立project之後再分化多個module，今天再大致介紹介紹各個module之間詳細工作的細分。 如果是不考慮細分多個module的話，可以看看這篇文章《SpringBoot入門教程(一)詳解intellij idea搭建SpringBoot》。
v設計資料庫
CREATE TABLE `useraccount` (
`id` int(10) unsigned NOT NULL AUTO_INCREMENT,
`username` varchar(255) NOT NULL,
`age` int(10) NOT NULL,
`phone` bigint NOT NULL,
`email` varchar(255) NOT NULL,
`account` varchar(100) NOT NULL UNIQUE,
`pwd` varchar(255) NOT NULL,
PRIMARY KEY (`id`)
)ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8;
insert into `useraccount` values(1,'趙(dev)',23,158,'[email protected]','test001','test001');
insert into `useraccount` values(2,'錢(dev)',27,136,'[email protected]','test002','test002');
insert into `useraccount` values(3,'孫(dev)',31,159,'[email protected]','test003','test003');
insert into `useraccount` values(4,'李(dev)',35,130,'[email protected]','test004','test004');
select * from `useraccount`;v引入mybatis
1.0 新增mybatis外掛
在learn-persist的pom.xml中新增mybatis外掛。
<build>
<plugins>
<plugin>
<groupId>org.mybatis.generator</groupId>
<artifactId>mybatis-generator-maven-plugin</artifactId>
<version>${mybatis-generator.version}</version>
<dependencies>
<dependency>
<groupId> mysql</groupId>
<artifactId> mysql-connector-java</artifactId>
<version>${mysql.version}</version>
</dependency>
<dependency>
<groupId>org.mybatis.generator</groupId>
<artifactId>mybatis-generator-core</artifactId>
<version>${mybatis-generator.version}</version>
</dependency>
</dependencies>
<configuration>
<!-- 自動生成的配置 -->
<configurationFile>src/main/resources/mybatis-config/mybatis-generator.xml</configurationFile>
<!--允許移動生成的檔案 -->
<verbose>true</verbose>
<!-- 是否覆蓋 -->
<overwrite>false</overwrite>
</configuration>
</plugin>
</plugins>
</build>如上圖，在learn-persist的resources下分別建立mapper和mybatis-config檔案目錄，並新增jdbc.properties和mybatis-generator.xml檔案。
1.1 jdbc.properties
jdbc.driverClassName=com.mysql.jdbc.Driver jdbc.url=jdbc:mysql://localhost:3306/mytest?useSSL=false jdbc.username=toutou jdbc.password=demo123456
1.2 mybatis-generator.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE generatorConfiguration
PUBLIC "-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN"
"http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd">
<generatorConfiguration>
<properties resource="mybatis-config/jdbc.properties"/>
<context id="DB2Tables" targetRuntime="MyBatis3">
<commentGenerator>
<property name="suppressDate" value="true"/>
<property name="suppressAllComments" value="true"/>
</commentGenerator>
<!--資料庫連結地址賬號密碼-->
<jdbcConnection driverClass="com.mysql.jdbc.Driver" connectionURL="${jdbc.url}" userId="${jdbc.username}" password="${jdbc.password}">
</jdbcConnection>
<javaTypeResolver>
<property name="forceBigDecimals" value="false"/>
</javaTypeResolver>
<javaModelGenerator targetPackage="learn.model.po"
targetProject="../learn-model/src/main/java/">
<property name="enableSubPackages" value="false" />
<property name="trimStrings" value="true" />
</javaModelGenerator>
<sqlMapGenerator targetPackage="mapper"
targetProject="../learn-persist/src/main/resources">
<property name="enableSubPackages" value="false" />
</sqlMapGenerator>
<javaClientGenerator targetPackage="learn.persist"
targetProject="../learn-persist/src/main/java/"
type="XMLMAPPER">
<property name="enableSubPackages" value="false" />
</javaClientGenerator>
<!--生成對應表及類名-->
<table tableName="useraccount" domainObjectName="UserAccount" enableCountByExample="false" enableUpdateByExample="false" enableDeleteByExample="false" enableSelectByExample="false" selectByExampleQueryId="false"></table>
</context>
</generatorConfiguration>
mybatis-generator.xml更多介紹可以看這裡。
1.3 版本號統一配置
為了方便後續管理，將所有引入外掛的版本號統一放在project(hellolearn)的pom.xml中統一控制，各子module(如learn-persist)的pom.xml中直接用 ${} 的方法使用。
例如：在hellolearn的pom.xml 屬性中新增 < mybatis-generator.version>1.3.6< /mybatis-generator.version> ，在learn-persist的pom.xml中直接 < version>${mybatis-generator.version}< /version> 使用即可。
注意上面的"例如"中程式碼標籤部分有空格是為了轉義的，防止瀏覽器將"mybatis-generator.version"和"version"識別為html標籤。
1.4 Maven Project 外掛
如上圖，在idea右側的maven project中就可以了對應的找到mybatis-generator的外掛，如果找不到就右鍵maven project中的learn-persist，然後點選generate sources...。
1.5 執行mybatis generator外掛
如上圖，點選執行mybatis generator:generator外掛，會對應生成左側標紅的三個檔案。
v編寫controller
2.0 新增result返回實體類
11111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111
2.1 新增controller
package learn.web.controller;
import learn.model.vo.Result;
import learn.model.vo.UserAccountVO;
import learn.service.*;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;
/**
* @author toutou
* @date by 2019/07
*/
@RestController
public class UserController {
@Autowired
UserAccountService userAccountService;
@GetMapping("/user/hello")
public String helloWorld() {
return "hello world.";
}
@GetMapping("/user/getuser")
public Result getUserAccountById(@RequestParam("uid") int id){
UserAccountVO user = userAccountService.getUserAccountById(id);
if(user != null){
return Result.setSuccessResult(user);
}else{
return Result.setErrorResult(404, "使用者不存在");
}
}
}
注意：getUserAccountById暫時用不上，可以先不新增。
2.2 新增aplication啟動類
package learn.web;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.ComponentScan;
/**
* Created by toutou on 2019/7
*/
@SpringBootApplication
@ComponentScan(basePackages = {"learn.*" })
@MapperScan(basePackages = {"learn.persist"})
public class Application {
public static void main(String[] args) {
SpringApplication.run(Application.class, args);
}
}
2.3 新增aplication.properties
server.port=8300 spring.profiles.active=@env@ #mybatis mybatis.mapper-locations = classpath:mapper/*Mapper.xml
2.4 配置啟動類
2.5 測試效果
v編寫service
3.1 新增Service
package learn.service;
import learn.model.vo.UserAccountVO;
/**
* @author toutou
* @date by 2019/07
*/
public interface UserAccountService {
UserAccountVO getUserAccountById(Integer id);
}
3.2 實現Service
package learn.service.impl;
import learn.model.po.UserAccount;
import learn.model.vo.UserAccountVO;
import learn.persist.UserAccountMapper;
import learn.service.UserAccountService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
/**
* @author toutou
* @date by 2019/07
*/
@Service
public class UserAccountServiceImpl implements UserAccountService{
@Autowired
UserAccountMapper userMapper;
public UserAccountVO getUserAccountById(Integer id){
UserAccountVO accountVO = null;
UserAccount account = userMapper.selectByPrimaryKey(id);
if (account != null) {
accountVO = new UserAccountVO();
accountVO.setId(account.getId());
accountVO.setAccount(account.getAccount());
accountVO.setAge(account.getAge());
accountVO.setEmail(account.getEmail());
accountVO.setUsername(account.getUsername());
accountVO.setPhone(account.getPhone());
}
return accountVO;
}
}
v配置設定
4.1 新增application.properties
4.2 新增application.dev.properties
spring.datasource.url=jdbc:mysql://localhost:3306/mytest?useSSL=false&useUnicode=true&characterEncoding=utf-8&zeroDateTimeBehavior=convertToNull&serverTimezone=GMT%2b8 spring.datasource.username=toutou spring.datasource.password=demo123456 spring.datasource.driver-class-name=com.mysql.jdbc.Driver
4.3 新增pom.xml配置
4.3.1 hellolearn pom.xml
4.3.2 learn-web pom.xml
<build>
<filters>
<filter>src/main/resources/config/application-${env}.properties</filter>
</filters>
</build>
4.4 更新application啟動類
4.5 測試效果
vlinux部署springboot
5.1 learn-web pom.xml中新增外掛
<build>
<filters>
<filter>src/main/resources/config/application-${env}.properties</filter>
</filters>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<configuration>
<mainClass>learn.web.Application</mainClass>
<classifier>exec</classifier>
</configuration>
<executions>
<execution>
<goals>
<goal>repackage</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
5.2 hellolearn pom.xml中新增外掛
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-jar-plugin</artifactId>
<version>3.0.2</version>
<configuration>
<excludes>
<exclude>**/profiles/</exclude>
<exclude>**/mybatis-generator/</exclude>
</excludes>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
</plugins>
</build>
注意：如果有用到profiles檔案目錄則exclude。
5.3 打包部署
java -jar learn-web-0.0.1-SNAPSHOT-exec.jar --server.port=95
你可能會遇到的問題：
- Spring boot Field required a bean of type that could not be found
- Caused by: java.lang.IllegalStateException: Ambiguous mapping found. Cannot map 'xxxController' bean method
- mybatis-generator的maven外掛使用異常(mybatis-generator-maven-plugin):generate failed: Exception getting JDBC Driver
- maven出現：Failed to execute goal on project ...: Could not resolve dependencies for project ...
- spring boot 專案打包時報錯 Execution default of goal org.springframework.boot:spring-boot-maven-plugin:1.5.
- Failed to configure a DataSource: 'url' attribute is not specified and no embedded datasource could be configured.
v原始碼地址
https://github.com/toutouge/javademosecond/tree/master/hellolearn
作 者：請叫我頭頭哥
出 處：http://www.cnblogs.com/toutou/
關於作者：專注於基礎平臺的專案開發。如有問題或建議，請多多賜教！
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