Java - Springboot

注解

@SpringBootApplication：@Configuration + @EnableAutoConfiguration + @ComponentScan

• @EnableAutoConfiguration：自动配置springboot
• @ComponentScan：自动扫描和装配所有的Spring组件，包括@Configuration类

@SpringBootApplication
public class AfvappApplication {
	public static void main(String[] args) {
		SpringApplication.run(AfvappApplication.class, args);
	}
}

@Controller：类注解，控制器层，类中方法配合@RequestMapping
@RestController：类注解，控制器层，REST风格，@Controller + @ResponseBody

@RestController
@RequestMapping("/demo")
public class DemoController {
    @RequestMapping(value = "/hello", method = RequestMethod.GET)
    public String hello() { ... }
}

@Repository：确保DAO或者repositories提供异常转译

@Repository
public interface SqlserverMapper {
    List<String> listVerifyRecords();
}

@Qualifier：@Qualifier(“name”) + @Autowired
@Resource：

@Autowired
@Qualifier(value = "sqlserverDataSource")
private DataSource sqlserverDataSource;

@Resource(name = "yt_MATHandleServiceImpl")
private MATHandleService ytService;
@Resource(name = "cw_MATHandleServiceImpl")
private MATHandleService cwService;

全局异常处理
@ControllerAdvice：包含@Component，可以被扫描到，统一处理异常
@ExceptionHandler（Exception.class）：方法注解，表示遇到该异常就执行以下方法

其他注解

@Service：类注解，服务层
@Component：泛指组件

单元测试

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-test</artifactId>
    <scope>test</scope>
    <exclusions>
      <exclusion>
        <groupId>org.junit.vintage</groupId>
        <artifactId>junit-vintage-engine</artifactId>
      </exclusion>
    </exclusions>
</dependency>

springboot 2.2.2.RELEASE默认绑定

org.junit.jupiter：5.5.2
org.junit.platform：1.5.2
org.junit.vintage：5.5.2

spring-boot-test自带测试工具

• JUnit：Java应用程序单元测试标准类库 Junit + Jmockit
• Spring Test & Spring Boot Test：SpringBoot应用程序功能集成化测试支持
• Mockito：Java Mock测试框架：（org.mockito v3.1.0）
• AssertJ：轻量级的断言类库
• Hamcrest：对象匹配器类库
• JSONassert：用于JSON的断言库
• JsonPath：JSON操作类库

编译时若提示Failed to resolve org.junit.platform:junit-platform-launcher，再引入即可

<dependency>
    <groupId>org.junit.platform</groupId>
    <artifactId>junit-platform-launcher</artifactId>
    <version>1.5.2</version>
    <scope>test</scope>
</dependency>

类注解@RunWith(SpringRunner.class) + @SpringBootTest 和 方法注解@Test

@RunWith(SpringRunner.class)
@SpringBootTest
public class MySbUnitTests {
	@Test
	public void hello() { ... }
}

Controller层测试：MockMvc

public class HelloControlerTests {
    private MockMvc mvc;
  
    @Before //初始化执行
    public void setUp() throws Exception {
        mvc = MockMvcBuilders.standaloneSetup(new HelloController()).build();
    }

    @Test //验证controller是否正常响应并打印返回结果
    public void testHello() throws Exception {
        mvc.perform(MockMvcRequestBuilders.get("/hello").accept(MediaType.APPLICATION_JSON))
                .andExpect(MockMvcResultMatchers.status().isOk())
                .andDo(MockMvcResultHandlers.print())
                .andReturn();
    }
}

热部署

<dependencies> <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-devtools</artifactId>
        <optional>true</optional>
</dependency> </dependencies>
<build> <plugins> <plugin>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-maven-plugin</artifactId>
        <configuration> <fork>true</fork> </configuration>
</plugin> </plugins> </build>

基础参见：springboot开发-测试-打包-部署-验证简易流程

打包

本地调试运行命令：mvn spring-boot:run
jar包：直接执行
方式：mvn clean package，详细编译配置参考

<build>
	<resources>
		<resource>
			<directory>src/main/resources</directory>
			<includes>
				<include>static/*.*</include>
				<include>templates/*.*</include>
				<include>**/*.xml</include>
				<include>**/*.yml</include>
				<include>**/*.properties</include>
			</includes>
			<filtering>false</filtering>
		</resource>
		<resource>
			<directory>src/main/java</directory>
			<includes>
				<include>**/*.xml</include>
			</includes>
			<filtering>false</filtering>
		</resource>
	</resources>

	<plugins>
		<plugin>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-maven-plugin</artifactId>
		</plugin>
	</plugins>
	<finalName>mytest-1.0.0</finalName>
</build>

war包：放到tomcat服务器下运行