先在 Spring 中建立一个环境,然后首先显示屏幕

( ゚д゚)ハッ!我好想迎接春天啊!!!不过,我没有知识,打算继续摸索下去。

环境建设

macOS Sierra(10.12.4)的操作系统

春天工具套件

请从这里下载专为Spring开发而设计的Spring Tool Suite集成开发环境。

创建项目

Capture 2017-11-06 22.58.43.png
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Capture 2017-11-06 23.00.14.png

POM编辑

<?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.example</groupId>
    <artifactId>demo</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>

    <name>demo</name>
    <description>Demo project for Spring Boot</description>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.5.8.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>

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

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

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>


</project>

建立

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写代码 (Xiě mǎ)

package com.example.demo;

import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;

@Controller
public class SampleController {

    @RequestMapping("/hello")
    private String hello(){
        return "Hello World!";
    }

    @RequestMapping("/")
    private String index(Model model){
            System.out.println("SampleController#show called.");

            model.addAttribute("name", "kenji tajima");
            model.addAttribute("lang", "Java");
            model.addAttribute("framework", "Spring Framework");

        return "index";
    }
}

确认行动

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(虽然简陋,但)应该会显示。

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