Spring Boot快速搭建Web项目基本框架

配置pom.xml

 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 

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

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 Springs 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;

}

Spring boot 使用 ON DUPLICATE KEY UPDATE属性控制版本 更新数据不成功 如果更新不成功会报下面的错误（此错误是自定义的）： The data you want to update has been updated by another user. Please reopen and try again！ 一、主要按下面的流程检查： 1、检查数据库的段alastupdatetime定义 2、检查.xml的alastupdatetime 3、要更新数据的主键是否在同一个updateByBatch中的List中重复出现
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