SpringBoot进阶教程(六十一)intellij idea project下建多个module搭建架构(下)
在上一篇文章《SpringBoot进阶教程(六十)intellij idea project下建多个module(上)》中，我们已经介绍了在intellij idea中创建project之后再分化多个module，今天再大致介绍介绍各个module之间详细工作的细分。 如果是不考虑细分多个module的话，可以看看这篇文章《SpringBoot入门教程(一)详解intellij idea搭建SpringBoot》。
v设计数据库
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,'赵(dev)',23,158,'[email protected]','test001','test001'); insert into `useraccount` values(2,'钱(dev)',27,136,'[email protected]','test002','test002'); insert into `useraccount` values(3,'孙(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 添加mybatis插件
在learn-persist的pom.xml中添加mybatis插件。
<build> <plugins> <plugin> <groupId>org.mybatis.generatorgroupId> <artifactId>mybatis-generator-maven-pluginartifactId> <version>${mybatis-generator.version}version> <dependencies> <dependency> <groupId> mysqlgroupId> <artifactId> mysql-connector-javaartifactId> <version>${mysql.version}version> dependency> <dependency> <groupId>org.mybatis.generatorgroupId> <artifactId>mybatis-generator-coreartifactId> <version>${mybatis-generator.version}version> dependency> dependencies> <configuration> <configurationFile>src/main/resources/mybatis-config/mybatis-generator.xmlconfigurationFile> <verbose>trueverbose> <overwrite>falseoverwrite> configuration> plugin> plugins> build>
如上图，在learn-persist的resources下分别创建mapper和mybatis-config文件目录，并添加jdbc.properties和mybatis-generator.xml文件。
1.1 jdbc.properties
jdbc.driverClassName=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/mytest?useSSL=false
jdbc.username=toutou
jdbc.password=demo123456
1.2 mybatis-generator.xml
xml version="1.0" encoding="UTF-8"?>
DOCTYPE generatorConfiguration
PUBLIC "-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN"
"http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd">
<generatorConfiguration>
<properties resource="mybatis-config/jdbc.properties"/>
<context id="DB2Tables" targetRuntime="MyBatis3">
<commentGenerator>
<property name="suppressDate" value="true"/>
<property name="suppressAllComments" value="true"/>
commentGenerator>
<jdbcConnection driverClass="com.mysql.jdbc.Driver" connectionURL="${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>
<table tableName="useraccount" domainObjectName="UserAccount" enableCountByExample="false" enableUpdateByExample="false" enableDeleteByExample="false" enableSelectByExample="false" selectByExampleQueryId="false">table>
context>
generatorConfiguration>
mybatis-generator.xml更多介绍可以看这里。
1.3 版本号统一配置
为了方便后续管理，将所有引入插件的版本号统一放在project(hellolearn)的pom.xml中统一控制，各子module(如learn-persist)的pom.xml中直接用 ${} 的方法使用。
例如：在hellolearn的pom.xml 属性中添加 < mybatis-generator.version>1.3.6< /mybatis-generator.version> ，在learn-persist的pom.xml中直接 < version>${mybatis-generator.version}< /version> 使用即可。
注意上面的"例如"中代码标签部分有空格是为了转义的，防止浏览器将"mybatis-generator.version"和"version"识别为html标签。
1.4 Maven Project 插件
如上图，在idea右侧的maven project中就可以了对应的找到mybatis-generator的插件，如果找不到就右键maven project中的learn-persist，然后点击generate sources...。
1.5 运行mybatis generator插件
如上图，点击运行mybatis generator:generator插件，会对应生成左侧标红的三个文件。
v编写controller
2.0 添加result返回实体类
package learn.model.vo; import java.io.Serializable; /** * @author toutou * @date by 2019/07 */ public class Resultimplements Serializable { public int code; public String message; public T data; public int getCode() { return code; } public void setCode(int code) { this.code = code; } public String getMessage() { return message; } public void setMessage(String message) { this.message = message; } public T getData() { return data; } public void setData(T data) { this.data = data; } public static Result setSuccessResult(T t){ Result r = new Result (); r.setCode(200); r.setData(t); r.setMessage("success"); return r; } public static Result setErrorResult(int tempCode, String messageTemp){ Result r = new Result (); r.setCode(tempCode); r.setMessage(messageTemp); return r; } }
2.1 添加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, "用户不存在");
}
}
}
注意：getUserAccountById暂时用不上，可以先不添加。
2.2 添加aplication启动类
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 添加aplication.properties
server.port=8300
spring.profiles.active=@env@
#mybatis
mybatis.mapper-locations = classpath:mapper/*Mapper.xml
2.4 配置启动类
2.5 测试效果
v编写service
3.1 添加Service
package learn.service; import learn.model.vo.UserAccountVO; /** * @author toutou * @date by 2019/07 */ public interface UserAccountService { UserAccountVO getUserAccountById(Integer id); }
3.2 实现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配置设置
4.1 添加application.properties
4.2 添加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 添加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-${env}.propertiesfilter> filters> build>
4.4 更新application启动类
4.5 测试效果
vlinux部署springboot
5.1 learn-web pom.xml中添加插件
<build> <filters> <filter>src/main/resources/config/application-${env}.propertiesfilter> filters> <plugins> <plugin> <groupId>org.springframework.bootgroupId> <artifactId>spring-boot-maven-pluginartifactId> <configuration> <mainClass>learn.web.ApplicationmainClass> <classifier>execclassifier> configuration> <executions> <execution> <goals> <goal>repackagegoal> goals> execution> executions> plugin> plugins> build>
5.2 hellolearn pom.xml中添加插件
<build> <plugins> <plugin> <groupId>org.apache.maven.pluginsgroupId> <artifactId>maven-jar-pluginartifactId> <version>3.0.2version> <configuration> <excludes> <exclude>**/profiles/exclude> <exclude>**/mybatis-generator/exclude> excludes> configuration> plugin> <plugin> <groupId>org.apache.maven.pluginsgroupId> <artifactId>maven-compiler-pluginartifactId> <configuration> <source>1.8source> <target>1.8target> configuration> plugin> plugins> build>
注意：如果有用到profiles文件目录则exclude。
5.3 打包部署
java -jar learn-web-0.0.1-SNAPSHOT-exec.jar --server.port=95
你可能会遇到的问题：
- 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插件使用异常(mybatis-generator-maven-plugin):generate failed: Exception getting JDBC Driver
- maven出现：Failed to execute goal on project ...: Could not resolve dependencies for project ...
- spring boot 项目打包时报错 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源码地址
https://github.com/toutouge/javademosecond/tree/master/hellolearn
作 者：请叫我头头哥
出 处：http://www.cnblogs.com/toutou/
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