项目源码:链接: https://pan.baidu.com/s/1yrGyenX3S5MPpHKuiwiCOw 提取码: e86e
CSDN下载: https://download.csdn.net/download/zcf980/10731132
在网上找了很久都没找到关于SpringBoot多模块的有效单元测试方法, 后来自己摸索了很久才解决, 写两篇博客来帮助大家
此篇为 Service 层的测试代码, Dao层测试请参考:https://blog.csdn.net/zcf980/article/details/83047798
本项目 分一个父工程 demo 和 三个子模块(demo-dao, demo-service, demo-web), 一个数据库 test , test里只有一张demo 表: 生成demo表的代码:
CREATE TABLE `demo` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`cname` varchar(255) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL,
PRIMARY KEY (`id`) USING BTREE
) ENGINE = InnoDB AUTO_INCREMENT = 2 CHARACTER SET = utf8 COLLATE = utf8_general_ci ROW_FORMAT = Dynamic;
因为 demo-service 依赖 demo-dao ,所以此处贴上demo-dao 和demo-service 层的目录结构, 很简单:
demo-dao 层:
1. Demo.java, DemoRepository.java;
2. pom.xml, application.yml
demo-service 层:
1. DemoService.java, DemoServiceImpl.java;
2. DemoServiceTest.java, DemoServiceApplicationTests.java
3. pom.xml
!!!!注意:与Dao测试不同点: DemoServiceApplicationTests.java 放在 demo 这个包下, 这样的话根据SpringBoot 启动类扫描包的规则: 自从启动类所在包的位置自上而下扫描,就能扫描到位于 demo.demodao 下的 DemoRepository 这个 Bean 以及位于 demo.demoservice 下的 DemoService 的 Bean
下面贴上代码:
DemoService.java
package demo.demoservice;
import demo.demodao.Demo;
import java.util.List;
public interface DemoService {
List<Demo> findAll();
}
DemoServiceImpl.java
package demo.demoservice.impl;
import demo.demodao.Demo;
import demo.demodao.DemoRepository;
import demo.demoservice.DemoService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import java.util.List;
@Service
public class DemoServiceImpl implements DemoService {
@Autowired
private DemoRepository demoRepository;
@Override
public List<Demo> findAll() {
return this.demoRepository.findAll();
}
}
DemoServiceApplicationTests.java(这个测试启动类不是默认测试启动类, 是经过修改的)
package demo;
import org.junit.Test;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class DemoServiceApplicationTests {
@Test
public void contextLoads() {
}
}
DemoServiceTest.java
package demo.demoservice;
import demo.demodao.Demo;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;
import java.util.List;
@RunWith(SpringRunner.class)
@SpringBootTest
public class DemoServiceTest {
@Autowired
private DemoService demoService;
@Test
public void testfindAll(){
List<Demo> demos = demoService.findAll();
for(Demo demo : demos){
System.out.println(demo.getId() + " " + demo.getName());
}
}
}
测试成功:
以上是主要代码, 下面贴上其他代码
demo-service 的 pom.xml 文件:
<?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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>demo</groupId>
<artifactId>demo-service</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>demo-service</name>
<description>Demo project for Spring Boot</description>
<parent>
<groupId>demo</groupId>
<artifactId>demo</artifactId>
<version>0.0.1-SNAPSHOT</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<dependencies>
<!-- 添加 demo-dao 的依赖 -->
<dependency>
<groupId>demo</groupId>
<artifactId>demo-dao</artifactId>
<version>0.0.1-SNAPSHOT</version>
</dependency>
</dependencies>
</project>
demo-dao 的文件:
Demo.java
package demo.demodao;
import javax.persistence.*;
@Entity(name = "demo") //设置实体名, 在数据库中是表名
public class Demo {
@Id
@GeneratedValue(strategy = GenerationType.AUTO) //设置自动增长
@Column(name = "id")
private Integer id;
@Column(name = "cname") //设置数据库字段名
private String name;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
}
DemoRepository.java
package demo.demodao;
import org.springframework.data.jpa.repository.JpaRepository;
public interface DemoRepository extends JpaRepository<Demo, Integer> {
}
application.xml
spring:
datasource:
# jdbc:mysql://localhost:3306/test 数据库地址
url: jdbc:mysql://localhost:3306/test?useUnicode=true&characterEncoding=UTF-8&useSSL=false
username: root # 数据库用户名 修改为自己数据库用户名和密码
password: xxxx # 数据库密码
driver-class-name: com.mysql.jdbc.Driver # 数据库驱动
jpa:
hibernate:
ddl-auto: none # create-drop 如果实体对应的表已存在,先删除再创建,否则直接创建
# !!!注意: 第一次运行时可设置为 create-drop, 这样就不需要手动创建数据库表, 但是后面运行务必设置为none
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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>demo</groupId>
<artifactId>demo-dao</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>demo-dao</name>
<description>Demo project for Spring Boot</description>
<parent>
<groupId>demo</groupId>
<artifactId>demo</artifactId>
<version>0.0.1-SNAPSHOT</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<dependencies>
<!-- 添加 demo-base 的依赖 -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
</dependency>
</dependencies>
</project>