On spring boot (i) HelloWorld

The setup process is as follows:

First, the Environment preparation:

1. Install the JDK environment and search the Web tutorial yourself.

2. Download and install MAVEN.

3. Download and install the STS. Download URL: https://spring.io/tools/sts/all/

Second, build HelloWorld project

1. Select the Create Springboot Wizard

Path: file->new->spring Start Project

Select Web attributes, create a new Springboot project,

2. The following dependencies exist in the Pom.xml file.

<dependencies><dependency><groupid>org.springframework.boot</groupid><artifactid >spring-boot-starter-web</artifactId></dependency><dependency><groupId> Org.springframework.boot</groupid><artifactid>spring-boot-starter-test</artifactid><scope >test</scope></dependency></dependencies>

3. Create a Helloworldcontroller class

@RestControllerpublic class Helloworldcontroller {@RequestMapping ("/hello") public String Index () {return '    Hello World "; }}

4. Run the Helloworldapplication class to start the service

5. Browser Input Http://127.0.0.1:8080/hello

6. Interface Output HelloWorld

The project was built successfully.

Third, testing

Create a test class to print execution results

@RunWith (springjunit4classrunner.class) @WebAppConfigurationpublic  class helloworldcontrolertests  {    private MockMvc mvc;     @Before      public void setup ()  throws Exception {         mvc = mockmvcbuilders.standalonesetup (New helloworldcontroller ()). Build ();     }     @Test     public void gethello ()   Throws exception {    mvc.perform (Mockmvcrequestbuilders.get ("/hello"). Accept ( Mediatype.application_json))                  .andexpect (Mockmvcresultmatchers.status (). IsOk ())                  .anddo (Mockmvcresulthandlers.print ())                  .andreturn ();     }} 

Result:

mockhttpservletrequest:      http method = get       request uri = /hello       parameters  = {}          headers = {accept=[ Application/json]}handler:             type  = com.example.demo.HelloWorldController            method = public java.lang.string com.example.demo.helloworldcontroller.index () Async:     async started = false     async result  = nullResolved Exception:              type = nullmodelandview:        view name  = null             view = null             Model = nullFlashMap:        Attributes = nullMockHttpServletResponse:            status = 200    error message = null           headers = {content-type=[application/ json;charset=iso-8859-1], content-length=[15]}     content type =  application/json;charset=ISO-8859-1              Body = Hello World LJZ    Forwarded URL =  null   redirected url = null           cookies = []

This article is from the "technical footprint" blog, so be sure to keep this source http://liangjingzhi.blog.51cto.com/13234473/1967970

On spring boot (i) HelloWorld