網(wǎng)上看到很多spring boot入門文章，但大多不全面，一般只記錄簡(jiǎn)單的創(chuàng)建流程尺铣，鑒于此，記錄下搭建基于gradle的spring boot項(xiàng)目的一個(gè)詳細(xì)步驟及配置争舞，包括mybatis和日志配置、調(diào)試澈灼、發(fā)布等竞川。本人剛開始嘗試記錄一些自己的學(xué)習(xí)過程店溢，文筆和表達(dá)能力有限，望大家包含和支持委乌！

系統(tǒng)及項(xiàng)目要求

1.jdk1.8
2.項(xiàng)目構(gòu)建工具：gradle
3.開發(fā)工具：idea
4.spring boot2.0

項(xiàng)目創(chuàng)建過程

• 根據(jù)圖示創(chuàng)建項(xiàng)目

  
  
  步驟1
  
  
  步驟2
  
  
  步驟3
• 一直點(diǎn)擊next, 直到點(diǎn)擊 finish

• gradle設(shè)置

  
  
  gradle設(shè)置

• 目錄結(jié)構(gòu)

  
  
  目錄結(jié)構(gòu)

修改配置

• 修改目錄結(jié)構(gòu)(controller/service等包自行添加)

  
  

• 修改gradle配置文件床牧，引入新的依賴

buildscript {
    ext {
        springBootVersion = '2.0.0.RELEASE'
    }
    repositories {
        mavenCentral()
    }
    dependencies {
        classpath("org.springframework.boot:spring-boot-gradle-plugin:${springBootVersion}")
    }
}

apply plugin: 'java'
apply plugin: 'eclipse'
apply plugin: 'org.springframework.boot'
apply plugin: 'io.spring.dependency-management'

group = 'com.springboot'
version = '0.0.1-SNAPSHOT'
sourceCompatibility = 1.8

repositories {
    mavenCentral()
}

// 移除spring boot自帶的日志管理工具，否則會(huì)有沖突
configurations {
    compile.exclude module: 'spring-boot-starter-logging'
}

dependencies {
    compile('org.springframework.boot:spring-boot-starter-jdbc')
    compile('org.springframework.boot:spring-boot-starter-web')
    compile('org.mybatis.spring.boot:mybatis-spring-boot-starter:1.3.2')
    compile('org.springframework.boot:spring-boot-starter-log4j2')
    compile("com.alibaba:druid:1.1.0")
    runtime('mysql:mysql-connector-java')
    testCompile('org.springframework.boot:spring-boot-starter-test')
}

• 修改啟動(dòng)文件 BootstudyApplication.java

package com.springboot.bootstudy;

import org.mybatis.spring.annotation.MapperScan;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.web.servlet.ServletComponentScan;

// TODO 自動(dòng)掃描的包遭贸，請(qǐng)根據(jù)實(shí)際的包結(jié)構(gòu)修改
@SpringBootApplication(scanBasePackages = {
        "com.springboot.bootstudy"
})
// TODO mybatis掃描的mapper接口文件戈咳，請(qǐng)根據(jù)實(shí)際的包結(jié)構(gòu)修改
@MapperScan(basePackages = {
        "com.springboot.bootstudy.mybatis.mapper"
})
// 掃描servlet注解(如果代碼中含有servlet相關(guān)注解，需要加上此的注解)
@ServletComponentScan
public class BootstudyApplication {

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

• 修改yml配置文件(application-daily.yml)

# 設(shè)置端口
server:
  port: 8080
spring:
  # 設(shè)置數(shù)據(jù)源壕吹，注意命名
  datasource:
    name:
    url: jdbc:mysql://10.0.10.41:3306/shinemo_open?autoReconnect=true&failOverReadOnly=false&maxReconnects=10&characterEncoding=UTF8
    username: root
    password: shinemo123
    type: com.alibaba.druid.pool.DruidDataSource
    driver-class-name: com.mysql.jdbc.Driver
    filters: stat
    connectionProperties: druid.stat.slowSqlMillis=50
    max-active: 5
    initialSize: 1
    maxWait: 60000
    minIdle: 1
    timeBetweenEvictionRunsMillis: 60000
    minEvictableIdleTimeMillis: 300000
    validationQuery: select 'x'
    testWhileIdle: true
    testOnBorrow: false
    testOnReturn: false
    poolPreparedStatements: true
    maxOpenPreparedStatements: 20
  # 設(shè)置環(huán)境
  profiles:
    active: daily

# mybatis 配置xml文件路徑和實(shí)體包路徑
mybatis:
  mapper-locations: classpath:mapper/*.xml
  type-aliases-package: com.springboot.bootstudy.mybatis.domain.model

# 設(shè)置日志文件路徑
logging:
  config: classpath:log4j2-daily.xml

application-online.yml參考上面修改

• log4j.xml 配置文件

<?xml version="1.0" encoding="UTF-8"?>
<Configuration status="info">
    <Properties>
        <Property name="app.log.dir">/tmp/logs/bootstudy</Property>
        <Property name="root.log.level">warn</Property>
    </Properties>
    <!-- ===================================================================== -->
    <!--                           appender 配置                               -->
    <!-- ===================================================================== -->
    <Appenders>
        <RollingRandomAccessFile name="error.appender"
                                 append="true"
                                 immediateFlush="true"
                                 fileName="${app.log.dir}/app-error.log"
                                 filePattern="${app.log.dir}/%d{yyyy/MM}/app-error-%d{dd}-%i.log">
            <PatternLayout charset="UTF-8">
                <Pattern>%d{HH:mm:ss,SSS} %-5level [%t] %c{1.}.%M(%L) - %m%n</Pattern>
            </PatternLayout>
            <Policies>
                <!-- 這里的1的單位是filePattern里面的%d{yyyy-MM-dd}-%i.log 最小的單位dd表示分鐘 -->
                <TimeBasedTriggeringPolicy interval="1" modulate="false"/>
            </Policies>
            <!-- 最多保留文件數(shù) -->
            <DefaultRolloverStrategy max="10"/>
        </RollingRandomAccessFile>

        <RollingRandomAccessFile name="access.appender"
                                 append="true"
                                 immediateFlush="true"
                                 fileName="${app.log.dir}/access.log"
                                 filePattern="${app.log.dir}/%d{yyyy/MM}/access-%d{dd}-%i.log">
            <PatternLayout charset="UTF-8">
                <Pattern>%d{HH:mm:ss} - %m%n</Pattern>
            </PatternLayout>
            <Policies>
                <TimeBasedTriggeringPolicy interval="1" modulate="false"/>
            </Policies>
            <DefaultRolloverStrategy max="31"/>
        </RollingRandomAccessFile>

    </Appenders>

    <!-- ===================================================================== -->
    <!--                           logger 配置                                   -->
    <!-- ===================================================================== -->
    <Loggers>
        <Root level="${root.log.level}">
            <AppenderRef ref="error.appender"/>
        </Root>

        <Logger name="error.log" level="WARN" additivity="false">
            <AppenderRef ref="error.appender"/>
        </Logger>

        <Logger name="access.log" level="INFO" additivity="false">
            <AppenderRef ref="access.appender"/>
        </Logger>

    </Loggers>
</Configuration>

• 打印訪問日志的filter

package com.springboot.bootstudy.filter;

/**
 * Created by yuanjian on 3/19/18
 *
 * @author liuyj@shinemo.com
 */

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Component;
import org.springframework.web.filter.OncePerRequestFilter;
import org.springframework.web.util.ContentCachingRequestWrapper;
import org.springframework.web.util.ContentCachingResponseWrapper;

import javax.servlet.FilterChain;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.nio.charset.StandardCharsets;

/**
 * 打印日志的filter
 * Created by yuanjian on 3/15/18
 *
 * @author liuyj@shinemo.com
 */
@Component
public class LogFilter extends OncePerRequestFilter {
    private Logger logger = LoggerFactory.getLogger("access.log");
    @Override
    public void destroy() {

    }

    @Override
    protected void doFilterInternal(HttpServletRequest request,
                                    HttpServletResponse response,
                                    FilterChain chain) throws ServletException, IOException {
        int length = request.getContentLength();
        ContentCachingRequestWrapper requestWrapper = new ContentCachingRequestWrapper(request, length);
        ContentCachingResponseWrapper responseWrapper = new ContentCachingResponseWrapper(response);
        try {
            chain.doFilter(request, responseWrapper);
        } finally {
            log(requestWrapper, responseWrapper);
            // 將返回值復(fù)制到response中著蛙，此段代碼必須
            responseWrapper.copyBodyToResponse();
        }
    }
    /**
     * 打印訪問日志，可以根據(jù)需求定制化
     *
     * @param requestWrapper  保存了body參數(shù)的request
     * @param responseWrapper 保存了返回值的response
     */
    private void log(ContentCachingRequestWrapper requestWrapper, ContentCachingResponseWrapper responseWrapper) {
        // 打印日志
        String body = "";
        if (requestWrapper.getContentLength() > 0) {
            body = new String(requestWrapper.getContentAsByteArray(), StandardCharsets.UTF_8);
        }
        byte[] resultByte = responseWrapper.getContentAsByteArray();
        String result = "";
        if (resultByte != null && resultByte.length > 0) {
            result = new String(resultByte, StandardCharsets.UTF_8);
        }
        logger.info("body:{}, result:{}", body, result);
    }
}

接下來我們就可以開發(fā)spring boot的應(yīng)用程序了耳贬。