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【Java】Spring Boot快速搭建Web项目基本框架

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Spring Boot快速搭建Web项目基本框架

叶云策 2017-10-23 13:37:52 浏览56 评论1

java spring springboot devtools thymeleaf 热部署

摘要： 使用Spring Boot快速搭建Web项目基本框架，本文采用thymeleaf模板引擎

新建项目

【Java】Spring Boot快速搭建Web项目基本框架

配置pom.xml

配置版本

<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">
<properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <java.version>1.8</java.version>
    <maven.compiler.source>1.8</maven.compiler.source>
    <maven.compiler.target>1.8</maven.compiler.target>
    <thymeleaf.version>3.0.8.RELEASE</thymeleaf.version>
    <thymeleaf-layout-dialect.version>2.0.5</thymeleaf-layout-dialect.version>
</properties>
</project>

依赖父项目

<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">
<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>1.5.7.RELEASE</version>
</parent>
</project>

引入web项目核心依赖包

spring-boot-starter-web

如果使用thymeleaf模版，可直接引入spring-boot-starter-thymeleaf，这个已经包含了spring-boot-starter-web的依赖

<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">
<dependencies>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-thymeleaf</artifactId>
    </dependency>
</dependencies>
</project>

如果还用到了thymeleaf的layout layout dialect,还需要引入另外一个依赖

<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">
<dependencies>
    <dependency>
        <groupId>nz.net.ultraq.thymeleaf</groupId>
        <artifactId>thymeleaf-layout-dialect</artifactId>
    </dependency>
</dependencies>
</project>

实现项目的热部署

添加devtools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">
<dependencies>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-devtools</artifactId>
        <optional>true</optional>
    </dependency>
</dependencies>
</project>

添加maven-plugin插件

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

单元测试

添加依赖

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

创建目录结构和项目包结构

【Java】Spring Boot快速搭建Web项目基本框架

Application.java

@SpringBootApplication
public class Application {
    public static void main(String[] args) {
        SpringApplication.run(Application.class, args);
    }
}

application.yml

server:
  port: 8181

配置Thymeleaf

package com.simpth.autumn.config;

import org.springframework.context.ApplicationContext;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.thymeleaf.spring4.SpringTemplateEngine;
import org.thymeleaf.spring4.templateresolver.SpringResourceTemplateResolver;
import org.thymeleaf.spring4.view.ThymeleafViewResolver;
import org.thymeleaf.templatemode.TemplateMode;

import nz.net.ultraq.thymeleaf.LayoutDialect;

@Configuration
public class ThymeleafConfig {


    @Bean
    public SpringResourceTemplateResolver templateResolver(ApplicationContext applicationContext) {
        SpringResourceTemplateResolver templateResolver = new SpringResourceTemplateResolver();
        templateResolver.setApplicationContext(applicationContext);
        //配置模板文件所在位置
        templateResolver.setPrefix("classpath:/templates/");
        //配置模板文件后缀
        templateResolver.setSuffix(".html");
        templateResolver.setTemplateMode(TemplateMode.HTML);
        //开发过程中配置为不开启缓存，以便开发过程中，所更改的模板代码能实时生效；上线时需设置为true
        templateResolver.setCacheable(false);
        templateResolver.setCharacterEncoding("UTF-8");
        return templateResolver;
    }

    @Bean
    public SpringTemplateEngine templateEngine(SpringResourceTemplateResolver templateResolver) {
        // SpringTemplateEngine automatically applies SpringStandardDialect and
        // enables Spring's own MessageSource message resolution mechanisms.
        SpringTemplateEngine templateEngine = new SpringTemplateEngine();
        templateEngine.setTemplateResolver(templateResolver);
        // Enabling the SpringEL compiler with Spring 4.2.4 or newer can
        // speed up execution in most scenarios, but might be incompatible
        // with specific cases when expressions in one template are reused
        // across different data types, so this flag is "false" by default
        // for safer backwards compatibility.
        //templateEngine.setEnableSpringELCompiler(true);
        templateEngine.addDialect(new LayoutDialect());
        return templateEngine;
    }

    @Bean
    public ThymeleafViewResolver viewResolver(SpringTemplateEngine templateEngine) {
        ThymeleafViewResolver viewResolver = new ThymeleafViewResolver();
        viewResolver.setTemplateEngine(templateEngine);
        return viewResolver;
    }
}