SpringBoot相关的知识点

时间:2021-05-07 00:30:51

1,为SpringBoot的Controller类写测试类,如下:

下面针对该Controller编写测试用例验证正确性,具体如下。当然也可以通过浏览器插件等进行请求提交验证: package com.kfit.demo; import org.junit.Before; import org.junit.Test; import org.junit.runner.RunWith; import org.springframework.boot.test.SpringApplicationConfiguration; import org.springframework.mock.web.MockServletContext; import org.springframework.test.context.junit4.SpringJUnit4ClassRunner; import org.springframework.test.context.web.WebAppConfiguration; import org.springframework.test.web.servlet.MockMvc; import org.springframework.test.web.servlet.RequestBuilder; import org.springframework.test.web.servlet.request.MockMvcRequestBuilders; import org.springframework.test.web.servlet.result.MockMvcResultMatchers; import org.springframework.test.web.servlet.setup.MockMvcBuilders; import com.kfit.controller.UserController; @RunWith(SpringJUnit4ClassRunner.class) @SpringApplicationConfiguration(classes=MockServletContext.class)//MockServletContext.class @WebAppConfiguration public class UserControllerTest extends MockMvcResultMatchers{ //模拟mvc对象类. private MockMvc mvc; @Before public void setup(){ /* * MockMvcBuilders使用构建MockMvc对象. */ mvc = MockMvcBuilders.standaloneSetup(new UserController()).build(); } @Test public void testUserController() throws Exception{ RequestBuilder request = null; //1. get 以下user列表,应该为空》 //1、构建一个get请求. request = MockMvcRequestBuilders.get("/users"); mvc.perform(request) .andExpect(status().isOk()) .andExpect(content().string("[]")) ; System.out.println("UserControllerTest.testUserController().get"); // 2、post提交一个user request = MockMvcRequestBuilders.post("/users") .param("id","1") .param("name","林峰") .param("age","20") ; mvc.perform(request).andExpect(status().isOk()).andExpect(content().string("success")); // 3、get获取user列表,应该有刚才插入的数据 request = MockMvcRequestBuilders.get("/users"); mvc.perform(request).andExpect(status().isOk()).andExpect(content().string("[{\"id\":1,\"name\":\"林峰\",\"age\":20}]")); // 4、put修改id为1的user request = MockMvcRequestBuilders.put("/users/1") .param("name", "林则徐") .param("age", "30"); mvc.perform(request) .andExpect(content().string("success")); // 5、get一个id为1的user request = MockMvcRequestBuilders.get("/users/1"); mvc.perform(request) .andExpect(content().string("{\"id\":1,\"name\":\"林则徐\",\"age\":30}")); // 6、del删除id为1的user request = MockMvcRequestBuilders.delete("/users/1"); mvc.perform(request) .andExpect(content().string("success")); // 7、get查一下user列表,应该为空 request = MockMvcRequestBuilders.get("/users"); mvc.perform(request) .andExpect(status().isOk()) .andExpect(content().string("[]")); } }

2,使用@ConfigurationProperties注解进行编码

需要下面的依赖 <!--spring boot 配置处理器 -->              <dependency>            <groupId>org.springframework.boot</groupId>            <artifactId>spring-boot-configuration-processor</artifactId>            <optional>true</optional>         </dependency>
配置类可以这样写: @ConfigurationProperties(prefix="com.kfit.blog") public class BlogProperties {         private String name;//博客作者         private String title;//博客标题       // 省略gettersetter }
在启动类中加入: @EnableConfigurationProperties({BlogProperties.class}) 这种的好处就是只需要配置一个地方,其它地方就是正常定义类的属性即可了。
3, 这条命令:java -jar xxx.jar --server.port=8888,通过使用--server.port属性来设置xxx.jar应用的端口为8888
4, 多环境的配置思路:    application.properties中配置通用内容,并设置spring.profiles.active=dev,以开发环境为默认配置    application-{profile}.properties中配置各个环境不同的内容 通过命令行方式去激活不同环境的配置。
执行java -jar xxx.jar --spring.profiles.active=prod,可以观察到服务端口被设置为80,也就是生产环境的配置(prod
5,在springboot的开发中,开发包和测试包必须一一对应,否则build的时候会出错的.
6,在springboot 的入口类中,我们只需要打上:@SpringBootApplication即可.其他的就免了,比如:  @Configuration  @EnableAutoConfiguration  @ComponentScan 因为前者是后面几个的汇总.
7,RESTful API
请求类型 URL 功能说明
GET /users 查询用户列表
POST /users 创建一个用户
GET /users/id 根据id查询一个用户
PUT /users/id 根据id更新一个用户
DELETE /users/id 根据id删除一个用户

8,代码提交命令 git pull origin features:features (前一个是远程仓库,后者是本地仓库)
git add .
git commit -m "updated some bugs"
git push origin features origin/features

9,
从前端传来日期的字符串,然后在项目中把字符串转化为Date类型,然后传入JPA的查询语句中.
顺便说下,在mysql中日期的比较可以直接使用 between and 进行.例如:
select * from `apps` where `created_at` between "2012-06-26 00:00:00" and "2012-06-26 00:00:00";@Query("select mon from Monetization mon where appId=:appId and datetime between :startDate and :endDate group by dayid")

第一步:接收串@GetMapping("/adrevenues")publicResponseEntity listReveByAppidAndDate(@RequestParam("appId") String appId, @RequestParam("startDate")String startDate,@RequestParam("endDate")String endDate){List<Monetization> monetizationList=monetizationService.findByAppidAndDate(appId,startDate,endDate);List<RevenueDto> monetizationDtoList=Lists.newArrayList();monetizationDtoList.addAll(monetizationList.stream().map(this::convertReven).collect(Collectors.toList()));returnResponseEntity.ok(monetizationDtoList);}
第二步:转换@OverridepublicList<Monetization> findByAppidAndDate(String appId, String startDate, String endDate){Date start=null;try{start =newSimpleDateFormat("yyyy-MM-dd HH:mm:ss").parse(startDate);Date end=newSimpleDateFormat("yyyy-MM-dd HH:mm:ss").parse(endDate);returnmonetizationRepository.findByAppidAndDate(appId,start,end);}catch(ParseException e) {e.printStackTrace();}returnCollections.emptyList();}
第三步:使用Date类型与mysql进行交互public interfaceMonetizationRepositoryextendsJpaRepository<Monetization,Long>{@Query("select mon from Monetization mon where appId=:appId and datetime between :startDate and :endDate group by dayid")publicList<Monetization> findByAppidAndDate(@Param("appId")String appId, @Param("startDate")Date startDate, @Param("endDate")Date endDate);
}