玩轉spring boot 快速開始（1）

2019-11-26 13:20:02

字體：大中小

來源：轉載

供稿：網友

開發環境：

IED環境：Eclipse

JDK版本：1.8

maven版本：3.3.9　　

一、創建一個spring boot的mcv web應用程序

打開Eclipse，新建Maven項目

選擇quickstart模板

完成Maven項目的創建

參照spring的官方例子：http://spring.io/guides/gs/testing-web/

在pom.xml增加maven依賴

<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>com.github.carter659</groupId> <artifactId>spring01</artifactId> <version>0.0.1-SNAPSHOT</version> <packaging>jar</packaging> <name>spring01</name> <url>http://maven.apache.org</url> <properties>  <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>  <java.version>1.8</java.version> </properties> <parent>  <groupId>org.springframework.boot</groupId>  <artifactId>spring-boot-starter-parent</artifactId>  <version>1.4.2.RELEASE</version> </parent> <dependencies>  <dependency>   <groupId>org.springframework.boot</groupId>   <artifactId>spring-boot-starter-web</artifactId>  </dependency> </dependencies> <build>  <plugins>   <plugin>    <groupId>org.springframework.boot</groupId>    <artifactId>spring-boot-maven-plugin</artifactId>   </plugin>  </plugins> </build> </project>

添加一個控制器文件“HomeController.java”

package com.github.carter659.spring01;import org.springframework.stereotype.Controller;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.ResponseBody;@Controllerpublic class HomeController { @RequestMapping("/") public @ResponseBody String index() {  return "你好，這是第一個spring boot應用"; }}

修改App.java文件

package com.github.carter659.spring01;import org.springframework.boot.SpringApplication;import org.springframework.boot.autoconfigure.SpringBootApplication;@SpringBootApplicationpublic class App { public static void main(String[] args) {  SpringApplication.run(App.class, args); }}

在App.java文件處，點擊右鍵Run As運行java程序

當控制臺處顯示運行結果后

在瀏覽器輸入“http://localhost:8080/”網站訪問第一個spring boot的應用

二、我們如何對spring boot做單元測試？

pom.xml中增加單元測試的依賴

<dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope></dependency>

在src/test/java中新建測試類“HttpRequestTest.java”

package com.github.carter659.spring01;import static org.assertj.core.api.Assertions.assertThat;import org.junit.Test;import org.junit.runner.RunWith;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.boot.context.embedded.LocalServerPort;import org.springframework.boot.test.context.SpringBootTest;import org.springframework.boot.test.context.SpringBootTest.WebEnvironment;import org.springframework.boot.test.web.client.TestRestTemplate;import org.springframework.test.context.junit4.SpringRunner;@RunWith(SpringRunner.class)@SpringBootTest(webEnvironment = WebEnvironment.RANDOM_PORT)public class HttpRequestTest { @LocalServerPort private int port; @Autowired private TestRestTemplate restTemplate; @Test public void greetingShouldReturnDefaultMessage() throws Exception {  assertThat(this.restTemplate.getForObject("http://localhost:" + port + "/",    String.class)).contains("你好，這是第一個spring boot應用"); }}