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SpringBoot一个原则，爱好编程的朋友们都知道，那就是"习惯优于配置"。
今天一上来主要说的还是代码，个人比较喜欢来的实战系列的，不过有的时候还是比较偏重于理论，理论是造轮子的基础之一，尽管前人先辈们或者其他编程界的大牛们已经为我们造了不少轮子，大牛们造的轮子在广义上是比较通用的，例如jeecg的插件式开发等。
不过对于项目需求而言，有些时候不一定开源的就一定可以复用，有些时候我们必须要在此创新。
记得我一个朋友，他们公司给他的一个业务是测试框架，该测试框架必须匹配公司各个业务场景，他在开源上找了不少项目，但是发现还是不行，有些只能解解燃眉之急，但是风险不可控。所以我这位朋友他决定为了更好的匹配公司的业务，他决定自己造轮子，不过当然还是站在前人的肩膀上。他用技术还是Java的反射和Google的一个技术，记得我跟我提过，不过此时我不记得了。
最终他还是成功造轮子，在这里我想表达的不是，造轮子，对于现有的轮子，如果我要采用必先满足我个人这些要求:
(1)文档丰富;
(2)开源项目活跃;
(3)风险可控;
(4)学习成本低;
当然最主要的是前三项，当然如果是开发赶进度的话，第四项不得不考虑进来。
毕竟一项技术，一个团队再用，如果学习成本毕竟高的话，到时项目遇到各种各样的问题，光解决问题就会花不少时间。
前三项就不用特别说了，文档丰富，例如Spring文档就很丰富。活跃，项目活跃至少可以和开源项目的开发人员进行交流。风险可控，对于企业而言，风险不可控意味着非常大的隐患，特别是金融方面的。
闲话不多说了，下面贴代码:
一、导入依赖
4.0.0 cn.blog blog001 0.0.1-SNAPSHOT war org.springframework.boot spring-boot-starter-parent 1.5.9.RELEASE aliyun http://maven.aliyun.com/nexus/content/groups/public/ snapshots https://oss.sonatype.org/content/repositories/snapshots/ UTF-8 1.8 1.8 2.1.9 2.1.8 2.4.13 1.2.39 1.1.0 org.apache.shiro shiro-core 1.2.2 org.apache.shiro shiro-spring 1.3.2 io.springfox springfox-swagger2 2.2.2 io.springfox springfox-swagger-ui 2.2.2 org.slf4j slf4j-api 1.7.19 com.alibaba druid ${druid.version} org.springframework.boot spring-boot-starter-web org.springframework.boot spring-boot-starter-tomcat provided org.apache.tomcat.embed tomcat-embed-jasper provided com.zaxxer HikariCP-java7 ${HikariCP.version} com.alibaba fastjson ${fastjson.version} com.baomidou mybatis-plus-boot-starter ${mybatis-plus-boot-starter.version} tomcat-jdbc org.apache.tomcat org.springframework.boot spring-boot-starter-test test com.jayway.restassured rest-assured 2.9.0 test org.apache.velocity velocity 1.7 test mysql mysql-connector-java 5.1.21 org.springframework.boot spring-boot-maven-plugin
二、编写Java代码
Application.java 启动类
package com.blog.springboot;import org.slf4j.Logger;import org.slf4j.LoggerFactory;import org.springframework.boot.Banner;import org.springframework.boot.SpringApplication;import org.springframework.boot.autoconfigure.SpringBootApplication;import org.springframework.transaction.annotation.EnableTransactionManagement;@EnableTransactionManagement@SpringBootApplicationpublic class Application { protected final static Logger logger = LoggerFactory.getLogger(Application.class); public static void main(String[] args) { SpringApplication app = new SpringApplication(Application.class); app.setBannerMode(Banner.Mode.OFF); app.run(args); logger.info("Application is success!"); }}
MyMetaObjectHandler.java
package com.blog.springboot;import com.baomidou.mybatisplus.mapper.MetaObjectHandler;import org.apache.ibatis.reflection.MetaObject;import org.slf4j.Logger;import org.slf4j.LoggerFactory;/** * 注入公共字段自动填充,任选注入方式即可 *///@Componentpublic class MyMetaObjectHandler extends MetaObjectHandler { protected final static Logger logger = LoggerFactory.getLogger(Application.class); @Override public void insertFill(MetaObject metaObject) { logger.info("新增"); } @Override public void updateFill(MetaObject metaObject) { logger.info("更新"); }}
MybatisPlusConfig.java（扫描Mapper文件）
package com.blog.springboot.config;import java.util.ArrayList;import java.util.List;import com.baomidou.mybatisplus.incrementer.H2KeyGenerator;import com.baomidou.mybatisplus.incrementer.IKeyGenerator;import com.baomidou.mybatisplus.mapper.ISqlInjector;import com.baomidou.mybatisplus.mapper.LogicSqlInjector;import com.baomidou.mybatisplus.mapper.MetaObjectHandler;import org.mybatis.spring.annotation.MapperScan;import org.springframework.context.annotation.Bean;import org.springframework.context.annotation.Configuration;import com.baomidou.mybatisplus.plugins.PaginationInterceptor;import com.baomidou.mybatisplus.plugins.PerformanceInterceptor;import com.baomidou.mybatisplus.plugins.parser.ISqlParser;import com.baomidou.mybatisplus.plugins.parser.tenant.TenantHandler;import com.baomidou.mybatisplus.plugins.parser.tenant.TenantSqlParser;import com.blog.springboot.MyMetaObjectHandler;import net.sf.jsqlparser.expression.Expression;import net.sf.jsqlparser.expression.LongValue;@Configuration@MapperScan("com.blog.springboot.mapper*")public class MybatisPlusConfig { /** * mybatis-plus SQL执行效率插件【生产环境可以关闭】 */ @Bean public PerformanceInterceptor performanceInterceptor() { return new PerformanceInterceptor(); } @Bean public MetaObjectHandler metaObjectHandler(){ return new MyMetaObjectHandler(); } /** * 注入主键生成器 */ @Bean public IKeyGenerator keyGenerator(){ return new H2KeyGenerator(); } /** * 注入sql注入器 */ @Bean public ISqlInjector sqlInjector(){ return new LogicSqlInjector(); }}
Swagger2.java
package com.blog.springboot.config;import org.springframework.context.annotation.Bean;import org.springframework.context.annotation.Configuration;import springfox.documentation.builders.ApiInfoBuilder;import springfox.documentation.builders.PathSelectors;import springfox.documentation.builders.RequestHandlerSelectors;import springfox.documentation.service.ApiInfo;import springfox.documentation.spi.DocumentationType;import springfox.documentation.spring.web.plugins.Docket;import springfox.documentation.swagger2.annotations.EnableSwagger2;@Configuration@EnableSwagger2public class Swagger2 { @Bean public Docket createRestApi() { return new Docket(DocumentationType.SWAGGER_2) .apiInfo(apiInfo()) .select() .apis(RequestHandlerSelectors.basePackage("com.blog.springboot")) .paths(PathSelectors.any()) .build(); } private ApiInfo apiInfo() { return new ApiInfoBuilder() .title("博客系统") .description("世界因编程而美好，编程改变世界") .termsOfServiceUrl("http://520.cn") .contact("yy") .version("1.0") .build(); }} WebConfig.java
package com.blog.springboot.config;import org.springframework.context.annotation.Bean;import org.springframework.context.annotation.Configuration;import org.springframework.web.bind.annotation.ControllerAdvice;import org.springframework.web.servlet.ViewResolver;import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;import org.springframework.web.servlet.view.InternalResourceViewResolver;/** ** WEB 初始化相关配置 *
*/@ControllerAdvice@Configurationpublic class WebConfig extends WebMvcConfigurerAdapter { @Bean public ViewResolver getViewResolver() { InternalResourceViewResolver resolver = new InternalResourceViewResolver(); resolver.setPrefix("/WEB-INF/view/"); resolver.setSuffix(".jsp"); return resolver; } @Override public void addResourceHandlers(ResourceHandlerRegistry registry) { //将所有/static/** 访问都映射到classpath:/static/ 目录下 registry.addResourceHandler("/static/**").addResourceLocations("classpath:/static/"); }}
UserEntity.java
package com.blog.springboot.entity;import java.io.Serializable;import com.baomidou.mybatisplus.activerecord.Model;import com.baomidou.mybatisplus.annotations.TableField;import com.baomidou.mybatisplus.annotations.TableId;import com.baomidou.mybatisplus.annotations.TableName;import com.baomidou.mybatisplus.enums.IdType;/** ** *
* * @author youcong123 * @since 2018-05-19 */@TableName("user")public class UserEntity extends Model{ /** * 用户ID */ @TableId(value = "user_id", type = IdType.AUTO) private Integer user_id; /** * 用户名 */ private String username; /** * 性别 */ private Integer sex; /** * 电话 */ private String phone; /** * 密码 */ private String password; /** * 等级 */ private Integer level; /** * 用户创建时间 */ @TableField("create_time") private String createTime; /** * 邮箱 */ private String email; /** * 登录标识 */ private Integer logo; /** * 登录时间 */ @TableField("login_time") private String loginTime; public Integer getUserId() { return user_id; } public void setUserId(Integer user_id) { this.user_id = user_id; } public String getUsername() { return username; } public void setUsername(String username) { this.username = username; } public Integer getSex() { return sex; } public void setSex(Integer sex) { this.sex = sex; } public String getPhone() { return phone; } public void setPhone(String phone) { this.phone = phone; } public String getPassword() { return password; } public void setPassword(String password) { this.password = password; } public Integer getLevel() { return level; } public void setLevel(Integer level) { this.level = level; } public String getCreateTime() { return createTime; } public void setCreateTime(String createTime) { this.createTime = createTime; } public String getEmail() { return email; } public void setEmail(String email) { this.email = email; } public Integer getLogo() { return logo; } public void setLogo(Integer logo) { this.logo = logo; } public String getLoginTime() { return loginTime; } public void setLoginTime(String loginTime) { this.loginTime = loginTime; } @Override public String toString() { return "User{" + "userId=" + user_id + ", username=" + username + ", sex=" + sex + ", phone=" + phone + ", password=" + password + ", level=" + level + ", createTime=" + createTime + ", email=" + email + ", logo=" + logo + ", loginTime=" + loginTime + "}"; } @Override protected Serializable pkVal() { // TODO Auto-generated method stub return this.user_id; }}
UserDao.java
package com.blog.springboot.mapper;import com.blog.springboot.entity.UserEntity;import com.baomidou.mybatisplus.mapper.BaseMapper;/** ** Mapper 接口 *
* * @author youcong123 * @since 2018-05-19 */public interface UserDao extends BaseMapper{}
UserService.java
package com.blog.springboot.service;import com.blog.springboot.entity.UserEntity;import com.baomidou.mybatisplus.service.IService;/** ** 服务类 *
* * @author youcong123 * @since 2018-05-19 */public interface UserService extends IService{}
UserServiceImpl.java