玩转spring boot——快速开始

2022-10-01 18:10:47

　　开发环境：

　　IED环境：Eclipse

　　JDK版本：1.8

　　maven版本：3.3.9

　　一、创建一个spring boot的mcv web应用程序

　　打开Eclipse，新建Maven项目

选择quickstart模板

完成Maven项目的创建

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

在pom.xml增加maven依赖

<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>

pom.xml

添加一个控制器文件“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;

@Controller

public class HomeController {

    @RequestMapping("/")

    public @ResponseBody String index() {

        return "你好，这是第一个spring boot应用";

    }

}

修改App.java文件

package com.github.carter659.spring01;

import org.springframework.boot.SpringApplication;

import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication

public class App {

    public static void main(String[] args) {

        SpringApplication.run(App.class, args);

    }

}

在App.java文件处，点击右键Run As运行java程序

当控制台处显示运行结果后

在浏览器输入“http://localhost:8080/”网站访问第一个spring boot的应用

二、我们如何对spring boot做单元测试？

pom.xml中增加单元测试的依赖

<dependency>

    <groupId>org.springframework.boot</groupId>

    <artifactId>spring-boot-starter-test</artifactId>

    <scope>test</scope>

</dependency>

在src/test/java中新建测试类“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，这是第一个spring boot应用");

    }

}