1、基于springboot-1.4.0.RELEASE版本测试
2、springBoot + Hibernate + Druid + Mysql + servlet(jsp)
一、maven的pom文件
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<?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" <modelVersion>4.0.0</modelVersion> <groupId>com.zsx</groupId> <artifactId>demo</artifactId> <packaging>war</packaging> <version>0.0.1</version> <name>zsx Maven Webapp</name> <url>http://maven.apache.org</url> <properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <jdk.version>1.7</jdk.version> <tomcat.version>7.0.69</tomcat.version> </properties> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>1.4.0.RELEASE</version> </parent> <dependencies> <!-- 添加对jsp视图解析的支持 --> <dependency> <groupId>org.apache.tomcat.embed</groupId> <artifactId>tomcat-embed-jasper</artifactId> </dependency> <dependency> <groupId>javax.servlet</groupId> <artifactId>jstl</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <!-- 下面两个引入为了操作数据库 --> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-data-jpa</artifactId> </dependency> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-tomcat</artifactId> <scope>provided</scope> </dependency> <!-- 只需引入spring-boot-devtools 即可实现热部署 --> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-devtools</artifactId> </dependency> <!-- Json包 --> <dependency> <groupId>com.alibaba</groupId> <artifactId>fastjson</artifactId> <version>1.2.16</version> </dependency> <!-- 为了监控数据库 --> <dependency> <groupId>com.alibaba</groupId> <artifactId>druid</artifactId> <version>1.0.25</version> </dependency> <dependency> <groupId>org.apache.poi</groupId> <artifactId>poi</artifactId> <version>3.14</version> </dependency> <!-- Junit 单元测试 --> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> </dependency> <dependency> <groupId>io.springfox</groupId> <artifactId>springfox-swagger2</artifactId> <version>2.6.0</version> </dependency> <dependency> <groupId>io.springfox</groupId> <artifactId>springfox-swagger-ui</artifactId> <version>2.6.0</version> </dependency> </dependencies> <build> <finalName>/</finalName> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> <dependencies> <!-- 热部署 --> <dependency> <groupId>org.springframework</groupId> <artifactId>springloaded</artifactId> <version>1.2.6.RELEASE</version> </dependency> </dependencies> </plugin> </plugins> </build> <repositories> <repository> <id>ali</id> <name>ali Repository</name> <url>http://maven.aliyun.com/nexus/content/groups/public/</url> <snapshots> <enabled>false</enabled> </snapshots> </repository> </repositories> </project> |
二、项目架构
想想还是介绍一下项目的目录结构，这样方便梳理整体的架构配置
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src├─main │ ├─java │ │ └─com │ │ └─zsx │ │ │ Application.java │ │ │ SpringBootStartApplication.java │ │ │ │ │ ├─common │ │ │ ├─config │ │ │ │ DruidDBConfig.java │ │ │ │ MultipartConfig.java │ │ │ │ │ │ │ ├─filter │ │ │ │ DruidStatFilter.java │ │ │ │ │ │ │ ├─interceptors │ │ │ │ AuthInterceptor.java │ │ │ │ WebAppConfigurer.java │ │ │ │ │ │ │ ├─servlet │ │ │ │ DruidStatViewServlet.java │ │ │ │ │ │ │ └─swagger │ │ │ Swagger2.java │ │ │ │ │ ├─controller │ │ │ │ LoginController.java │ │ │ │ TestController.java │ │ │ │ UserController.java │ │ │ │ │ ├─dao │ │ │ │ TUserDao.java │ │ │ │ │ │ │ └─impl │ │ ├─entity │ │ │ │ BaseEntity.java │ │ │ │ │ ├─model │ │ │ │ Tree.java │ │ │ │ │ ├─service │ │ │ │ UserService.java │ │ │ │ │ │ │ └─impl │ │ │ UserServiceImpl.java │ │ │ │ │ └─util │ │ GeneratePageable.java │ │ │ ├─resources │ │ │ application.properties │ │ │ logback-test.xml │ │ │ │ │ └─static │ │ ├─css │ │ ├─img │ │ └─js │ │ │ └─webapp │ │ index.jsp │ │ │ └─WEB-INF │ │ web.xml │ │ │ └─view │ │ login.jsp │ │ │ ├─error │ │ 500.jsp │ ├─jsp │ main.jsp │ └─test └─java UtilTest.java |
标准的maven项目结构，其中java下是dao、service、controller ，还有实体类映射entity，其他配置config
三、resources下的应用配置文件application.properties
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#server.port=9090# 数据库访问配置# 主数据源，默认的spring.datasource.type=com.alibaba.druid.pool.DruidDataSourcespring.datasource.url=jdbc:mysql://localhost:3306/testspring.datasource.username= rootspring.datasource.password= rootspring.datasource.driverClassName = com.mysql.jdbc.Driver# 下面为连接池的补充设置，应用到上面所有数据源中# 初始化大小，最小，最大spring.datasource.initialSize=5spring.datasource.minIdle=5spring.datasource.maxActive=20# 配置获取连接等待超时的时间spring.datasource.maxWait=60000# 配置间隔多久才进行一次检测，检测需要关闭的空闲连接，单位是毫秒 spring.datasource.timeBetweenEvictionRunsMillis=60000# 配置一个连接在池中最小生存的时间，单位是毫秒 spring.datasource.minEvictableIdleTimeMillis=300000spring.datasource.validationQuery=SELECT 1 FROM DUALspring.datasource.testWhileIdle=truespring.datasource.testOnBorrow=falsespring.datasource.testOnReturn=false# 打开PSCache，并且指定每个连接上PSCache的大小 spring.datasource.poolPreparedStatements=truespring.datasource.maxPoolPreparedStatementPerConnectionSize=20# 配置监控统计拦截的filters，去掉后监控界面sql无法统计，'wall'用于防火墙 spring.datasource.filters=stat,wall,log4j# 通过connectProperties属性来打开mergeSql功能；慢SQL记录spring.datasource.connectionProperties=druid.stat.mergeSql=true;druid.stat.slowSqlMillis=5000# 合并多个DruidDataSource的监控数据spring.datasource.useGlobalDataSourceStat=true#JPA Configuration: spring.jpa.database=MYSQL# Show or not log for each sql queryspring.jpa.show-sql=falsespring.jpa.generate-ddl=true # Hibernate ddl auto (create, create-drop, update)spring.jpa.hibernate.ddl-auto=create #spring.jpa.database-platform=org.hibernate.dialect.MySQL5Dialect spring.jpa.hibernate.naming_strategy=org.hibernate.cfg.ImprovedNamingStrategy #spring.jpa.database=org.hibernate.dialect.MySQL5InnoDBDialect spring.jpa.properties.hibernate.dialect=org.hibernate.dialect.MySQL5Dialectspring.mvc.view.prefix=/WEB-INF/view/spring.mvc.view.suffix=.jsp#spring.resources.static-locations=classpath:/resources/,classpath:/static/ |
四、启动应用主类文件 Application.java
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package com.zsx;import org.springframework.boot.SpringApplication;import org.springframework.boot.autoconfigure.SpringBootApplication;import org.springframework.boot.web.servlet.ServletComponentScan;@SpringBootApplication@ServletComponentScan // 扫描使用注解方式的servletpublic class Application { public static void main(String[] args) { SpringApplication.run(Application.class, args); }} |
若需要部署到外部的tomcat容器中，则添加下面类即可。
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package com.zsx;import org.slf4j.Logger;import org.slf4j.LoggerFactory;import org.springframework.boot.SpringApplication;import org.springframework.boot.builder.SpringApplicationBuilder;import org.springframework.boot.context.web.SpringBootServletInitializer;/** * 修改启动类，继承 SpringBootServletInitializer 并重写 configure 方法 * @author ZSX * */public class SpringBootStartApplication extends SpringBootServletInitializer { private static final Logger logger = LoggerFactory.getLogger(SpringBootStartApplication.class); @Override protected SpringApplicationBuilder configure(SpringApplicationBuilder builder) { return builder.sources(Application.class); }} |
五、数据库连接池Druid的配置
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package com.zsx.common.config;import java.sql.SQLException;import javax.sql.DataSource;import org.springframework.beans.factory.annotation.Value;import org.springframework.context.annotation.Bean;import org.springframework.context.annotation.Configuration;import org.springframework.context.annotation.Primary;import com.alibaba.druid.pool.DruidDataSource;/** * DruidDBConfig类被@Configuration标注，用作配置信息； * DataSource对象被@Bean声明，为Spring容器所管理， * @Primary表示这里定义的DataSource将覆盖其他来源的DataSource。 * @author ZSX *jdbc.url=${jdbc.url} *最新的支持方式如下: *jdbc.url=@jdbc.url@ */@Configurationpublic class DruidDBConfig {// private Logger logger = LoggerFactory.getLogger(DruidDBConfig.class); @Value("${spring.datasource.url}") private String dbUrl; @Value("${spring.datasource.username}") private String username; @Value("${spring.datasource.password}") private String password; @Value("${spring.datasource.driverClassName}") private String driverClassName; @Value("${spring.datasource.initialSize}") private int initialSize; @Value("${spring.datasource.minIdle}") private int minIdle; @Value("${spring.datasource.maxActive}") private int maxActive; @Value("${spring.datasource.maxWait}") private int maxWait; @Value("${spring.datasource.timeBetweenEvictionRunsMillis}") private int timeBetweenEvictionRunsMillis; @Value("${spring.datasource.minEvictableIdleTimeMillis}") private int minEvictableIdleTimeMillis; @Value("${spring.datasource.validationQuery}") private String validationQuery; @Value("${spring.datasource.testWhileIdle}") private boolean testWhileIdle; @Value("${spring.datasource.testOnBorrow}") private boolean testOnBorrow; @Value("${spring.datasource.testOnReturn}") private boolean testOnReturn; @Value("${spring.datasource.poolPreparedStatements}") private boolean poolPreparedStatements; @Value("${spring.datasource.maxPoolPreparedStatementPerConnectionSize}") private int maxPoolPreparedStatementPerConnectionSize; @Value("${spring.datasource.filters}") private String filters; @Value("{spring.datasource.connectionProperties}") private String connectionProperties; @Bean // 声明其为Bean实例 @Primary // 在同样的DataSource中，首先使用被标注的DataSource public DataSource dataSource() { DruidDataSource datasource = new DruidDataSource(); datasource.setUrl(this.dbUrl); datasource.setUsername(username); datasource.setPassword(password); datasource.setDriverClassName(driverClassName); // configuration datasource.setInitialSize(initialSize); datasource.setMinIdle(minIdle); datasource.setMaxActive(maxActive); datasource.setMaxWait(maxWait); datasource.setTimeBetweenEvictionRunsMillis(timeBetweenEvictionRunsMillis); datasource.setMinEvictableIdleTimeMillis(minEvictableIdleTimeMillis); datasource.setValidationQuery(validationQuery); datasource.setTestWhileIdle(testWhileIdle); datasource.setTestOnBorrow(testOnBorrow); datasource.setTestOnReturn(testOnReturn); datasource.setPoolPreparedStatements(poolPreparedStatements); datasource.setMaxPoolPreparedStatementPerConnectionSize(maxPoolPreparedStatementPerConnectionSize); try { datasource.setFilters(filters); } catch (SQLException e) { } datasource.setConnectionProperties(connectionProperties); return datasource; }} |
springboot里默认使用tomcat的上传文件大小限制，即1MB，
修改用下面的配置类：
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import javax.servlet.MultipartConfigElement;import org.springframework.boot.web.servlet.MultipartConfigFactory;import org.springframework.context.annotation.Bean;import org.springframework.context.annotation.Configuration;@Configurationpublic class MultipartConfig { @Bean public MultipartConfigElement multipartConfigElement(){ MultipartConfigFactory factory = new MultipartConfigFactory(); factory.setMaxFileSize("10MB"); factory.setMaxRequestSize("10MB"); return factory.createMultipartConfig(); }} |
六、开启Druid的数据库监控配置
1、配置Filter
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import javax.servlet.annotation.WebFilter;import javax.servlet.annotation.WebInitParam;import com.alibaba.druid.support.http.WebStatFilter;/** * 配置druid监控统计功能 * 配置Filter * @author ZSX * */@WebFilter(filterName = "druidWebStatFilter", urlPatterns = "/*", initParams = { @WebInitParam(name="exclusions",value="*.js,*.gif,*.jpg,*.bmp,*.png,*.css,*.ico,/druid/*")// 忽略资源 })public class DruidStatFilter extends WebStatFilter {} |
2、 配置web访问的servlet
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import javax.servlet.annotation.WebInitParam;import javax.servlet.annotation.WebServlet;import com.alibaba.druid.support.http.StatViewServlet;/** * 配置druid监控统计功能 * 在SpringBoot项目中基于注解的配置，如果是web.xml配置，按规则配置即可 * @author ZSX * */@WebServlet(urlPatterns = "/druid/*", initParams = {// @WebInitParam(name = "allow", value = "192.168.16.110,127.0.0.1"), // IP白名单 (没有配置或者为空，则允许所有访问)// @WebInitParam(name="deny",value="192.168.16.111"), // IP黑名单 (存在共同时，deny优先于allow) @WebInitParam(name="loginUsername",value="druid"),// 用户名 @WebInitParam(name="loginPassword",value="druid"),// 密码 @WebInitParam(name="resetEnable",value="false")// 禁用HTML页面上的“Reset All”功能 })public class DruidStatViewServlet extends StatViewServlet {} |
这样启动项目后在浏览器中输入地址：端口/druid，就可以看到druid的监控web页面了
七、 拦截器配置
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import org.springframework.context.annotation.Configuration;import org.springframework.web.servlet.config.annotation.InterceptorRegistry;import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;@Configurationpublic class WebAppConfigurer extends WebMvcConfigurerAdapter { /** * 配置拦截器 */ @Override public void addInterceptors(InterceptorRegistry registry) { // TODO Auto-generated method stub // 多个拦截器组成一个拦截器链 // addPathPatterns 用于添加拦截规则 // excludePathPatterns 用户排除拦截 registry.addInterceptor(new AuthInterceptor()).addPathPatterns("/**"); super.addInterceptors(registry); } /** * 添加自定义的静态资源映射 这里使用代码的方式自定义目录映射，并不影响Spring Boot的默认映射，可以同时使用。 */ @Override public void addResourceHandlers(ResourceHandlerRegistry registry) {// registry.addResourceHandler("/new/**").addResourceLocations("classpath:/new/");// registry.addResourceHandler("/**").addResourceLocations("/"); super.addResourceHandlers(registry); }} |
八、swagger发布api测试配置（可忽略）
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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.zsx.controller.api")) .paths(PathSelectors.any()) .build(); } private ApiInfo apiInfo(){ return new ApiInfoBuilder() .title("Spring Boot中使用Swagger2构建RESTful APIs") .description("描述") .version("1.0") .build(); }} |
至此，所有的配置已完成，下面是一个操作数据的简单demo
九、实体类
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@Entity@Table(name = "t_user")public class Tuser implements java.io.Serializable { /** * */ private static final long serialVersionUID = 1L; @Id @GeneratedValue(strategy=GenerationType.IDENTITY) private Long id; @Column(name = "username") private String userName; @Column(name = "password") private String passWord; @Column(name = "email") private String email; @Column(name = "mobile") private String mobile; @Column(name = "nickname") private String nickName; // 省略getter 和 setter} |
十、dao层
1、使用jpa基本可以实现不写sql，（但实际开发中，业务逻辑会很复杂，一点不写sql完全不现实）
2、注意添加@Repository注解， 添加JpaSpecificationExecutor继承可以方便分页
3、 看些jpa的查询语法资料
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import java.util.List;import java.util.Map;import org.springframework.data.domain.Pageable;import org.springframework.data.jpa.repository.JpaSpecificationExecutor;import org.springframework.data.jpa.repository.Query;import org.springframework.data.repository.PagingAndSortingRepository;import org.springframework.data.repository.query.Param;import org.springframework.stereotype.Repository;@Repositorypublic interface TuserDao extends PagingAndSortingRepository<tuser, long="">, JpaSpecificationExecutor<tuser> { Tuser findByUserName(String userName); @Query("from Tuser t where id = :id") List<tuser> queryFamilyList(@Param("id") Long id, Pageable pageable);} |
十一、service和controller没啥好说的，跟原先的一样，下面再提供一个单元测试的demo
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import java.util.List;import javax.persistence.EntityManager;import org.junit.Test;import org.junit.runner.RunWith;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.boot.test.SpringApplicationConfiguration;import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;import org.springframework.test.context.web.WebAppConfiguration;import com.alibaba.fastjson.JSON;import com.golden.Application;import com.golden.dao.TUserDao;import com.golden.entity.Tuser;import com.golden.util.GeneratePageable;@RunWith(SpringJUnit4ClassRunner.class)//指定我们SpringBoot工程的Application启动类@SpringApplicationConfiguration(classes = Application.class)//由于是Web项目，Junit需要模拟ServletContext，因此我们需要给我们的测试类加上@WebAppConfiguration@WebAppConfigurationpublic class UtilTest { @Autowired private TUserDao dao; @Autowired private EntityManager em; @Test public void test1(){ dao.findByUserName("admin"); } @Test public void test2(){ // 使用jpa提供的分页类 java.util.List<order> list = new ArrayList<sort.order>(); Order order = new Order(Direction.DESC, "createTime"); list.add(order); Sort sort = new Sort(list); Pageable pageable = new PageRequest(0, 10, sort); Page<tuser> findAll = dao.findAll(pageable); } @Test public void test3(){ EntityManager em = dao.getEntityManager(); Query query = em.createNativeQuery("select * from t_user limit 1"); Object singleResult = query.getSingleResult(); System.out.println(singleResult); } /*//执行原生SQLQuery nativeQuery = em.createNativeQuery(String sql);//指定返回对象类型nativeQuery.unwrap(SQLQuery.class).setResultTransformer(Transformers.aliasToBean( Class resultType));//返回对象List<t> resultList = nativeQuery.getResultList(); */} |
后记：
不用Druid的可以把有关Druid的配置全部删掉，swagger的同理
这里没有使用hibernate.cfg.xml配置文件，主要习惯了在实体类里配置字段了，不怎么用hibernate的映xml文件了，但其实配置起来跟springmvc项目一样
说实话这里使用jpa操作数据库，没感觉有多方便，因为总有各种奇葩的需求，当然也可能是我没深入研究，所以建议改用Mybatis，这个我会再写一篇springboot加mybatis的配置教程的，最后，还可以使用原生的sql查询，即使用单元测试里的EntityManager对象去执行sql，返回结果可以指定对象类型，也很方便
还需要注意的一个点是静态文件的存放位置，这个跟原先的项目不一样，原先是在webapp下，但springboot是默认放在resources下的static目录下的，还有其他默认目录和配置.