Spring Boot Quick Start

Introducing the Web Module

The current pom.xml content is as follows, with only two modules introduced:

• spring-boot-starter: core modules, including automatic configuration support, logs, and Yaml
• spring-boot-starter-test: Test modules, including JUnit, Hamcrest, Mockito

<Dependencies> <Dependency> <Groupid>org.springframework.boot</Groupid> <Artifactid>spring-boot-starter</Artifactid> </DEPENDENCY> <DEPENDENCY> <groupid>org.springframework.boot</ GROUPID> <artifactid> Spring-boot-starter-test</ARTIFACTID> <scope>test</SCOPE> Span class= "line" ></DEPENDENCY> </DEPENDENCIES>

To introduce a Web module, you need to add a spring-boot-starter-web module:

<dependency> <groupid>org.springframework.boot</groupid> <artifactid>spring-boot-starter-web</artifactid> </dependency>

Writing HelloWorld Services

• Create package a named com.didispace.web (modified according to the actual situation)
• Create HelloController a class with the following content

@RestController Hellocontroller { @RequestMapping ("/hello") Index() { "Hello World"; } }

• Start the main program, open the browser access http://localhost:8080/hello , you can see the page outputHello World

Writing Unit Test Cases

Open the src/test/ test entry class under Chapter1ApplicationTests . The following is a simple unit test to simulate an HTTP request, as follows:

@RunWith (Springjunit4classrunner.class) @SpringApplicationConfiguration (classes = mockservletcontext.class) @WebAppConfiguration PublicClasschapter1applicationtests { Private MOCKMVC MVC; @Before PublicvoidSetUp () throws Exception { MVC = Mockmvcbuilders.standalonesetup (new hellocontroller ()). build (); @Test public void gethello () throws Exception { mvc.perform ( Mockmvcrequestbuilders.get ( "/hello"). Accept (Mediatype.application_json)) .andexpect (Status () IsOk ()) .andexpect (content (). String (Equalto ( "Hello World")); /span>

Use MockServletContext to build an empty one WebApplicationContext so that we can create HelloController it @Before and pass it to the function in the function MockMvcBuilders.standaloneSetup（） .

• Note that the following content is introduced to make, status content and equalTo function available

Static org.hamcrest.Matchers.equalTo; Static org.springframework.test.web.servlet.result.MockMvcResultMatchers.content; Static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;

Now that the goal has been completed, a blank spring boot project has been built through MAVEN, and a simple request processing is implemented by introducing a Web module.

Spring Boot Quick Start