一、基础项目构建,引入web模块,完成一个简单的RESTful API

2019-07-30

一、基础项目构建,引入web模块,完成一个简单的RESTful API

一、Spring Boot的主要优点:

  • 为所有Spring开发者更快的入门
  • 开箱即用,提供各种默认配置来简化项目配置
  • 内嵌式容器简化Web项目
  • 没有冗余代码生成和XML配置的要求

 

二、使用maven构建项目

1.访问官网:http://start.spring.io/  选择基本的构建工具。

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2.点击Generate Project下载项目压缩包。

3.解压项目包,并用ecplise以Maven项目导入

  1. 菜单中选择File–>New–>Project from Existing Sources...
  2. 选择解压后的项目文件夹,点击OK
  3. 点击Import project from external model并选择Maven,点击Next到底为止。
  4. 若你的环境有多个版本的JDK,注意到选择Java SDK的时候请选择Java 7以上的版本

 

 三、项目结构解析

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通过上面步骤完成了基础项目的创建,Spring Boot的基础结构共三个文件(具体路径根据用户生成项目时填写的Group所有差异):

  • src/main/java下的程序入口:Chapter1Application
  • src/main/resources下的配置文件:application.properties
  • src/test/下的测试入口:Chapter1ApplicationTests
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package com.didispace;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.boot.context.web.SpringBootServletInitializer;

@SpringBootApplication
public class Chapter1Application extends SpringBootServletInitializer{

    public static void main(String[] args) {
        SpringApplication.run(Chapter1Application.class, args);
    }
    @Override//为了打包springboot项目
    protected SpringApplicationBuilder configure(SpringApplicationBuilder builder) {
        return builder.sources(this.getClass());
    }
}
Chapter1Application
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server.port=8080
application.properties
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package com.didispace;

import com.didispace.web.HelloController;
import org.junit.Before;
import org.junit.Ignore;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.boot.test.SpringApplicationConfiguration;
import org.springframework.http.MediaType;
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.request.MockMvcRequestBuilders;
import org.springframework.test.web.servlet.setup.MockMvcBuilders;

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


@RunWith(SpringJUnit4ClassRunner.class)
@SpringApplicationConfiguration(classes = MockServletContext.class)
@WebAppConfiguration
public class Chapter1ApplicationTests {

    private MockMvc mvc;

    @Before
    public void setUp() 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")));
    }

}
Chapter1ApplicationTests

生成的Chapter1ApplicationChapter1ApplicationTests类都可以直接运行来启动当前创建的项目,由于目前该项目未配合任何数据访问或Web模块,程序会在加载完Spring之后结束运行。

 

四、引入web模块

当前的pom.xml内容如下,仅引入了两个模块:

  • spring-boot-starter:核心模块,包括自动配置支持、日志和YAML
  • spring-boot-starter-test:测试模块,包括JUnit、Hamcrest、Mockito
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<?xml version="1.0" encoding="UTF-8"?>
<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.didispace</groupId>
    <artifactId>Chapter1</artifactId>
    <version>1.0.0</version>
    <packaging>jar</packaging>

    <name>Chapter1</name>
    <description>The first Spring Boot project</description>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.3.2.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <java.version>1.8</java.version>
    </properties>

    <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>
        </dependency>

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

    </dependencies>
    
    <build>
        <defaultGoal>compile</defaultGoal>
        <sourceDirectory>src</sourceDirectory>
        <finalName>springboot-package</finalName>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <configuration>
                    <mainClass>com.didispace.Chapter1Application</mainClass> 
                    <skipTests>true</skipTests> 
                </configuration>
                <executions>
                    <execution>
                        <goals>
                            <goal>repackage</goal>
                        </goals>
                    </execution>
                </executions>                
            </plugin>

        </plugins>
    </build>

</project>
pom.xml

 

五、编写服务

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package com.didispace.web;

import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
public class HelloController {

    @RequestMapping("/hello")
    public String index() {
        return "Hello World";
    }

}
HelloController

 启动主程序,打开浏览器访问http://localhost:8080/hello,可以看到页面输出Hello World

 

六、编写单元测试用例

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package com.didispace;

import com.didispace.web.HelloController;
import org.junit.Before;
import org.junit.Ignore;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.boot.test.SpringApplicationConfiguration;
import org.springframework.http.MediaType;
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.request.MockMvcRequestBuilders;
import org.springframework.test.web.servlet.setup.MockMvcBuilders;

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


@RunWith(SpringJUnit4ClassRunner.class)
@SpringApplicationConfiguration(classes = MockServletContext.class)
@WebAppConfiguration
public class Chapter1ApplicationTests {

    private MockMvc mvc;

    @Before
    public void setUp() 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")));
    }

}
Chapter1ApplicationTests

 

一、基础项目构建,引入web模块,完成一个简单的RESTful API

一、基础项目构建,引入web模块,完成一个简单的RESTful API

原文地址:https://www.cnblogs.com/liandy001/p/11271276.html