标签：def cto 例子 根据 embed find return request col
SpringBoot
在您第1次接触和学习Spring框架的时候，是否因为其繁杂的配置而退却了？在你第n次使用Spring框架的时候，是否觉得一堆反复黏贴的配置有一些厌烦？那么您就不妨来试试使用Spring Boot来让你更易上手，更简单快捷地构建Spring应用！
Spring Boot让我们的Spring应用变的更轻量化。比如：你可以仅仅依靠一个Java类来运行一个Spring引用。你也可以打包你的应用为jar并通过使用java -jar来运行你的Spring Web应用。
Spring Boot的主要优点：
为所有Spring开发者更快的入门
开箱即用，提供各种默认配置来简化项目配置
内嵌式容器简化Web项目
没有冗余代码生成和XML配置的要求
本章主要目标完成Spring Boot基础项目的构建，并且实现一个简单的Http请求处理，通过这个例子对Spring Boot有一个初步的了解，并体验其结构简单、开发快速的特性。
Java 7及以上
Spring Framework 4.1.5及以上
本文采用Java 1.8.0_73、Spring Boot 1.3.2调试通过。
名为”springboot-helloworld” 类型为Jar工程项目
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<parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>1.3.3.RELEASE</version> </parent> <dependencies> <!—SpringBoot web 组件 --> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> </dependencies>
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spring-boot-starter-parent作用 在pom.xml中引入spring-boot-start-parent,spring官方的解释叫什么stater poms,它可以提供dependency management,也就是说依赖管理，引入以后在申明其它dependency的时候就不需要version了，后面可以看到。 spring-boot-starter-web作用 springweb 核心组件 spring-boot-maven-plugin作用 如果我们要直接Main启动spring，那么以下plugin必须要添加，否则是无法启动的。如果使用maven 的spring-boot:run的话是不需要此配置的。（我在测试的时候，如果不配置下面的plugin也是直接在Main中运行的。）
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创建package命名为com.itmayiedu.controller（根据实际情况修改）
创建HelloController类，内容如下
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@RestController @EnableAutoConfiguration publicclass HelloController { @RequestMapping("/hello") public String index() { return"Hello World"; } publicstaticvoid main(String[] args) { SpringApplication.run(HelloController.class, args); } } |
在上加上RestController 表示修饰该Controller所有的方法返回JSON格式,直接可以编写
Restful接口
注解:作用在于让 Spring Boot 根据应用所声明的依赖来对 Spring 框架进行自动配置
这个注解告诉Spring Boot根据添加的jar依赖猜测你想如何配置Spring。由于spring-boot-starter-web添加了Tomcat和Spring MVC，所以auto-configuration将假定你正在开发一个web应用并相应地对Spring进行设置。
标识为启动类
Springboot默认端口号为8080
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@RestController @EnableAutoConfiguration publicclass HelloController { @RequestMapping("/hello") public String index() { return"Hello World"; } publicstaticvoid main(String[] args) { SpringApplication.run(HelloController.class, args); } } |
启动主程序，打开浏览器访问http://localhost:8080/index，可以看到页面输出Hello World
@ComponentScan(basePackages = "com.itmayiedu.controller")---控制器扫包范围
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@ComponentScan(basePackages = "com.itmayiedu.controller") @EnableAutoConfiguration public class App { public static void main(String[] args) { SpringApplication.run(App.class, args); } } |
在我们开发Web应用的时候，需要引用大量的js、css、图片等静态资源。
默认配置
Spring Boot默认提供静态资源目录位置需置于classpath下，目录名需符合如下规则：
/static
/public
/resources
/META-INF/resources
举例：我们可以在src/main/resources/目录下创建static，在该位置放置一个图片文件。启动程序后，尝试访问http://localhost:8080/D.jpg。如能显示图片，配置成功。
在进行行的时候,springboot默认他自动加上了static文件夹
@ExceptionHandler 表示拦截异常
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@ControllerAdvice public class GlobalExceptionHandler { @ExceptionHandler(RuntimeException.class) @ResponseBody public Map<String, Object> exceptionHandler() { Map<String, Object> map = new HashMap<String, Object>(); map.put("errorCode", "101"); map.put("errorMsg", "系統错误!"); return map; } } |
渲染Web页面
在之前的示例中，我们都是通过@RestController来处理请求，所以返回的内容为json对象。那么如果需要渲染html页面的时候，要如何实现呢？
模板引擎
在动态HTML实现上Spring Boot依然可以完美胜任，并且提供了多种模板引擎的默认配置支持，所以在推荐的模板引擎下，我们可以很快的上手开发动态网站。
Spring Boot提供了默认配置的模板引擎主要有以下几种：
Spring Boot建议使用这些模板引擎，避免使用JSP，若一定要使用JSP将无法实现Spring Boot的多种特性，具体可见后文：支持JSP的配置
当你使用上述模板引擎中的任何一个，它们默认的模板配置路径为：src/main/resources/templates。当然也可以修改这个路径，具体如何修改，可在后续各模板引擎的配置属性中查询并修改。
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<!-- 引入freeMarker的依赖包. --> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-freemarker</artifactId> </dependency> |
在src/main/resources/创建一个templates文件夹,后缀为*.ftl
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@RequestMapping("/index") public String index(Map<String, Object> map) { map.put("name","美丽的天使..."); return"index"; } |
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<!DOCTYPE html> <html> <head lang="en"> <meta charset="UTF-8" /> <title></title> </head> <body> ${name} </body> </html> |
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@RequestMapping("/index") public String index(Map<String, Object> map) { map.put("name","###蚂蚁课堂###"); map.put("sex",1); List<String> userlist=new ArrayList<String>(); userlist.add("余胜军"); userlist.add("张三"); userlist.add("李四"); map.put("userlist",userlist); return"index"; } <!DOCTYPE html> <html> <head lang="en"> <meta charset="UTF-8" /> <title>首页</title> </head> <body> ${name} <#if sex==1> 男 <#elseif sex==2> 女 <#else> 其他
</#if>
<#list userlist as user> ${user} </#list> </body> </html>
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新建application.properties文件
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######################################################## ###FREEMARKER (FreeMarkerAutoConfiguration) ######################################################## spring.freemarker.allow-request-override=false spring.freemarker.cache=true spring.freemarker.check-template-location=true spring.freemarker.charset=UTF-8 spring.freemarker.content-type=text/html spring.freemarker.expose-request-attributes=false spring.freemarker.expose-session-attributes=false spring.freemarker.expose-spring-macro-helpers=false #spring.freemarker.prefix= #spring.freemarker.request-context-attribute= #spring.freemarker.settings.*= spring.freemarker.suffix=.ftl spring.freemarker.template-loader-path=classpath:/templates/ #comma-separated list #spring.freemarker.view-names= # whitelist of view names that can be resolved |
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<parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>1.3.3.RELEASE</version> </parent> <dependencies> <!-- SpringBoot 核心组件 --> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-tomcat</artifactId> </dependency> <dependency> <groupId>org.apache.tomcat.embed</groupId> <artifactId>tomcat-embed-jasper</artifactId> </dependency> </dependencies> |
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spring.mvc.view.prefix=/WEB-INF/jsp/ spring.mvc.view.suffix=.jsp |
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@Controller publicclass IndexController { @RequestMapping("/index") public String index() { return"index"; } } |
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<parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>1.5.2.RELEASE</version> </parent> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-jdbc</artifactId> </dependency> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>5.1.21</version> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> </dependencies> |
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spring.datasource.url=jdbc:mysql://localhost:3306/test spring.datasource.username=root spring.datasource.password=root spring.datasource.driver-class-name=com.mysql.jdbc.Driver
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@Service publicclass UserServiceImpl implements UserService { @Autowired private JdbcTemplate jdbcTemplate; publicvoid createUser(String name, Integer age) { System.out.println("ssss"); jdbcTemplate.update("insert into users values(null,?,?);", name, age); } } |
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@ComponentScan(basePackages = "com.itmayiedu") @EnableAutoConfiguration publicclass App { publicstaticvoid main(String[] args) { SpringApplication.run(App.class, args); } }
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注意: spring-boot-starter-parent要在1.5以上
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<parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>1.3.2.RELEASE</version> <relativePath /> <!-- lookup parent from repository --> </parent> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> </dependency> <dependency> <groupId>org.mybatis.spring.boot</groupId> <artifactId>mybatis-spring-boot-starter</artifactId> <version>1.1.1</version> </dependency> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>5.1.21</version> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> </dependencies> |
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spring.datasource.url=jdbc:mysql://localhost:3306/test spring.datasource.username=root spring.datasource.password=root spring.datasource.driver-class-name=com.mysql.jdbc.Driver
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publicinterface UserMapper { @Select("SELECT * FROM USERS WHERE NAME = #{name}") User findByName(@Param("name") String name); @Insert("INSERT INTO USERS(NAME, AGE) VALUES(#{name}, #{age})") int insert(@Param("name") String name, @Param("age") Integer age); }
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@ComponentScan(basePackages = "com.itmayiedu") @MapperScan(basePackages = "com.itmayiedu.mapper") @SpringBootApplication public class App { public static void main(String[] args) { SpringApplication.run(App.class, args); } } |
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<parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>1.4.2.RELEASE</version> </parent> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-data-jpa</artifactId> </dependency> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>5.1.21</version> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> </dependencies> |
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@Entity(name = "users") public class User { @Id @GeneratedValue private Integer id; @Column private String name; @Column private Integer age; // ..get/set方法 } |
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public interface UserDao extends JpaRepository<User, Integer> { } |
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@RestController publicclass IndexController { @Autowired private UserDao userDao; @RequestMapping("/index") public String index(Integer id) { User findUser = userDao.findOne(id); System.out.println(findUser.getName()); return"success"; } } |
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@ComponentScan(basePackages = { "com.itmayiedu" }) @EnableJpaRepositories(basePackages = "com.itmayiedu.dao") @EnableAutoConfiguration @EntityScan(basePackages = "com.itmayiedu.entity") public class App { public static void main(String[] args) { SpringApplication.run(App.class, args); } } |
同学们思考下，你们在项目中有使用到多数据源吗？
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spring.datasource.test1.driverClassName = com.mysql.jdbc.Driver spring.datasource.test1.url = jdbc:mysql://localhost:3306/test01?useUnicode=true&characterEncoding=utf-8 spring.datasource.test1.username = root spring.datasource.test1.password = root
spring.datasource.test2.driverClassName = com.mysql.jdbc.Driver spring.datasource.test2.url = jdbc:mysql://localhost:3306/test02?useUnicode=true&characterEncoding=utf-8 spring.datasource.test2.username = root spring.datasource.test2.password = root |
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@Configuration// 注册到springboot容器中 @MapperScan(basePackages = "com.itmayiedu.user1", sqlSessionFactoryRef = "test1SqlSessionFactory") publicclass DataSource1Config {
/** * * @methodDesc: 功能描述:(配置test1数据库) * @author: 余胜军 * @param: @return * @createTime:2017年9月17日下午3:16:44 * @returnType:@return DataSource * @copyright:上海每特教育科技有限公司 * @QQ:644064779 */ @Bean(name = "test1DataSource") @Primary @ConfigurationProperties(prefix = "spring.datasource.test1") public DataSource testDataSource() { return DataSourceBuilder.create().build(); }
/** * * @methodDesc: 功能描述:(test1 sql会话工厂) * @author: 余胜军 * @param: @param * dataSource * @param: @return * @param: @throws * Exception * @createTime:2017年9月17日下午3:17:08 * @returnType:@param dataSource * @returnType:@return * @returnType:@throws Exception SqlSessionFactory * @copyright:上海每特教育科技有限公司 * @QQ:644064779 */ @Bean(name = "test1SqlSessionFactory") @Primary public SqlSessionFactory testSqlSessionFactory(@Qualifier("test1DataSource") DataSource dataSource) throws Exception { SqlSessionFactoryBean bean = new SqlSessionFactoryBean(); bean.setDataSource(dataSource); // bean.setMapperLocations( // new PathMatchingResourcePatternResolver().getResources("classpath:mybatis/mapper/test1/*.xml")); returnbean.getObject(); }
/** * * @methodDesc: 功能描述:(test1 事物管理) * @author: 余胜军 * @param: @param * dataSource * @param: @return * @param: @throws * Exception * @createTime:2017年9月17日下午3:17:08 * @returnType:@param dataSource * @returnType:@return * @returnType:@throws Exception SqlSessionFactory * @copyright:上海每特教育科技有限公司 * @QQ:644064779 */ @Bean(name = "test1TransactionManager") @Primary public DataSourceTransactionManager testTransactionManager(@Qualifier("test1DataSource") DataSource dataSource) { returnnew DataSourceTransactionManager(dataSource); }
@Bean(name = "test1SqlSessionTemplate") public SqlSessionTemplate testSqlSessionTemplate( @Qualifier("test1SqlSessionFactory") SqlSessionFactory sqlSessionFactory) throws Exception { returnnew SqlSessionTemplate(sqlSessionFactory); }
} |
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public interface User1Mapper { @Insert("insert into users values(null,#{name},#{age});") public int addUser(@Param("name") String name, @Param("age") Integer age); } |
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@ComponentScan(basePackages = "com.itmayiedu") @EnableAutoConfiguration publicclass App { publicstaticvoid main(String[] args) { SpringApplication.run(App.class, args); } }
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No qualifying bean of type [javax.sql.DataSource] is defined: expected single matching bean but found 2: test1DataSource,test2DataSource
springboot默认集成事物,只主要在方法上加上@Transactional即可
使用springboot+jta+atomikos 分布式事物管理
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<dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-jta-atomikos</artifactId> </dependency> |
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# Mysql 1 mysql.datasource.test.url = jdbc:mysql://localhost:3306/test01?useUnicode=true&characterEncoding=utf-8 mysql.datasource.test.username = root mysql.datasource.test.password = root
mysql.datasource.test.minPoolSize = 3 mysql.datasource.test.maxPoolSize = 25 mysql.datasource.test.maxLifetime = 20000 mysql.datasource.test.borrowConnectionTimeout = 30 mysql.datasource.test.loginTimeout = 30 mysql.datasource.test.maintenanceInterval = 60 mysql.datasource.test.maxIdleTime = 60 mysql.datasource.test.testQuery = select1
# Mysql 2 mysql.datasource.test2.url =jdbc:mysql://localhost:3306/test02?useUnicode=true&characterEncoding=utf-8 mysql.datasource.test2.username =root mysql.datasource.test2.password =root
mysql.datasource.test2.minPoolSize = 3 mysql.datasource.test2.maxPoolSize = 25 mysql.datasource.test2.maxLifetime = 20000 mysql.datasource.test2.borrowConnectionTimeout = 30 mysql.datasource.test2.loginTimeout = 30 mysql.datasource.test2.maintenanceInterval = 60 mysql.datasource.test2.maxIdleTime = 60 mysql.datasource.test2.testQuery = select1
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package com.itmayiedu.config;
import org.springframework.boot.context.properties.ConfigurationProperties;
@ConfigurationProperties(prefix = "mysql.datasource.test") publicclass DBConfig1 {
private String url; private String username; private String password; privateintminPoolSize; privateintmaxPoolSize; privateintmaxLifetime; privateintborrowConnectionTimeout; privateintloginTimeout; privateintmaintenanceInterval; privateintmaxIdleTime; private String testQuery; } package com.itmayiedu.config;
import org.springframework.boot.context.properties.ConfigurationProperties;
@ConfigurationProperties(prefix = "mysql.datasource.test1") publicclass DBConfig2 {
private String url; private String username; private String password; privateintminPoolSize; privateintmaxPoolSize; privateintmaxLifetime; privateintborrowConnectionTimeout; privateintloginTimeout; privateintmaintenanceInterval; privateintmaxIdleTime; private String testQuery; }
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@Configuration // basePackages 最好分开配置如果放在同一个文件夹可能会报错 @MapperScan(basePackages = "com.itmayiedu.test01", sqlSessionTemplateRef = "testSqlSessionTemplate") publicclass TestMyBatisConfig1 {
// 配置数据源 @Primary @Bean(name = "testDataSource") public DataSource testDataSource(DBConfig1 testConfig) throws SQLException { MysqlXADataSource mysqlXaDataSource = new MysqlXADataSource(); mysqlXaDataSource.setUrl(testConfig.getUrl()); mysqlXaDataSource.setPinGlobalTxToPhysicalConnection(true); mysqlXaDataSource.setPassword(testConfig.getPassword()); mysqlXaDataSource.setUser(testConfig.getUsername()); mysqlXaDataSource.setPinGlobalTxToPhysicalConnection(true);
AtomikosDataSourceBean xaDataSource = new AtomikosDataSourceBean(); xaDataSource.setXaDataSource(mysqlXaDataSource); xaDataSource.setUniqueResourceName("testDataSource");
xaDataSource.setMinPoolSize(testConfig.getMinPoolSize()); xaDataSource.setMaxPoolSize(testConfig.getMaxPoolSize()); xaDataSource.setMaxLifetime(testConfig.getMaxLifetime()); xaDataSource.setBorrowConnectionTimeout(testConfig.getBorrowConnectionTimeout()); xaDataSource.setLoginTimeout(testConfig.getLoginTimeout()); xaDataSource.setMaintenanceInterval(testConfig.getMaintenanceInterval()); xaDataSource.setMaxIdleTime(testConfig.getMaxIdleTime()); xaDataSource.setTestQuery(testConfig.getTestQuery()); returnxaDataSource; }
@Bean(name = "testSqlSessionFactory") public SqlSessionFactory testSqlSessionFactory(@Qualifier("testDataSource") DataSource dataSource) throws Exception { SqlSessionFactoryBean bean = new SqlSessionFactoryBean(); bean.setDataSource(dataSource); returnbean.getObject(); }
@Bean(name = "testSqlSessionTemplate") public SqlSessionTemplate testSqlSessionTemplate( @Qualifier("testSqlSessionFactory") SqlSessionFactory sqlSessionFactory) throws Exception { returnnew SqlSessionTemplate(sqlSessionFactory); } }
package com.itmayiedu.datasource;
import java.sql.SQLException;
import javax.sql.DataSource;
import org.apache.ibatis.session.SqlSessionFactory; import org.mybatis.spring.SqlSessionFactoryBean; import org.mybatis.spring.SqlSessionTemplate; import org.mybatis.spring.annotation.MapperScan; import org.springframework.beans.factory.annotation.Qualifier; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import com.atomikos.jdbc.AtomikosDataSourceBean; import com.itmayiedu.config.DBConfig1; import com.mysql.jdbc.jdbc2.optional.MysqlXADataSource;
@Configuration // basePackages 最好分开配置如果放在同一个文件夹可能会报错 @MapperScan(basePackages = "com.itmayiedu.test02", sqlSessionTemplateRef = "test2SqlSessionTemplate") publicclass TestMyBatisConfig2 {
// 配置数据源 @Bean(name = "test2DataSource") public DataSource testDataSource(DBConfig1 testConfig) throws SQLException { MysqlXADataSource mysqlXaDataSource = new MysqlXADataSource(); mysqlXaDataSource.setUrl(testConfig.getUrl()); mysqlXaDataSource.setPinGlobalTxToPhysicalConnection(true); mysqlXaDataSource.setPassword(testConfig.getPassword()); mysqlXaDataSource.setUser(testConfig.getUsername()); mysqlXaDataSource.setPinGlobalTxToPhysicalConnection(true);
AtomikosDataSourceBean xaDataSource = new AtomikosDataSourceBean(); xaDataSource.setXaDataSource(mysqlXaDataSource); xaDataSource.setUniqueResourceName("test2DataSource");
xaDataSource.setMinPoolSize(testConfig.getMinPoolSize()); xaDataSource.setMaxPoolSize(testConfig.getMaxPoolSize()); xaDataSource.setMaxLifetime(testConfig.getMaxLifetime()); xaDataSource.setBorrowConnectionTimeout(testConfig.getBorrowConnectionTimeout()); xaDataSource.setLoginTimeout(testConfig.getLoginTimeout()); xaDataSource.setMaintenanceInterval(testConfig.getMaintenanceInterval()); xaDataSource.setMaxIdleTime(testConfig.getMaxIdleTime()); xaDataSource.setTestQuery(testConfig.getTestQuery()); returnxaDataSource; }
@Bean(name = "test2SqlSessionFactory") public SqlSessionFactory testSqlSessionFactory(@Qualifier("test2DataSource") DataSource dataSource) throws Exception { SqlSessionFactoryBean bean = new SqlSessionFactoryBean(); bean.setDataSource(dataSource); returnbean.getObject(); }
@Bean(name = "test2SqlSessionTemplate") public SqlSessionTemplate testSqlSessionTemplate( @Qualifier("test2SqlSessionFactory") SqlSessionFactory sqlSessionFactory) throws Exception { returnnew SqlSessionTemplate(sqlSessionFactory); } } |
@EnableConfigurationProperties(value = { DBConfig1.class, DBConfig2.class })
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#log4j.rootLogger=CONSOLE,info,error,DEBUG log4j.rootLogger=info,error,CONSOLE,DEBUG log4j.appender.CONSOLE=org.apache.log4j.ConsoleAppender log4j.appender.CONSOLE.layout=org.apache.log4j.PatternLayout log4j.appender.CONSOLE.layout.ConversionPattern=%d{yyyy-MM-dd-HH-mm}[%t][%c][%p]-%m%n log4j.logger.info=info log4j.appender.info=org.apache.log4j.DailyRollingFileAppender log4j.appender.info.layout=org.apache.log4j.PatternLayout log4j.appender.info.layout.ConversionPattern=%d{yyyy-MM-dd-HH-mm}[%t][%c][%p]-%m%n log4j.appender.info.datePattern=‘.‘yyyy-MM-dd log4j.appender.info.Threshold = info log4j.appender.info.append=true #log4j.appender.info.File=/home/admin/pms-api-services/logs/info/api_services_info log4j.appender.info.File=/Users/dddd/Documents/testspace/pms-api-services/logs/info/api_services_info log4j.logger.error=error log4j.appender.error=org.apache.log4j.DailyRollingFileAppender log4j.appender.error.layout=org.apache.log4j.PatternLayout log4j.appender.error.layout.ConversionPattern=%d{yyyy-MM-dd-HH-mm}[%t][%c][%p]-%m%n log4j.appender.error.datePattern=‘.‘yyyy-MM-dd log4j.appender.error.Threshold = error log4j.appender.error.append=true #log4j.appender.error.File=/home/admin/pms-api-services/logs/error/api_services_error log4j.appender.error.File=/Users/dddd/Documents/testspace/pms-api-services/logs/error/api_services_error log4j.logger.DEBUG=DEBUG log4j.appender.DEBUG=org.apache.log4j.DailyRollingFileAppender log4j.appender.DEBUG.layout=org.apache.log4j.PatternLayout log4j.appender.DEBUG.layout.ConversionPattern=%d{yyyy-MM-dd-HH-mm}[%t][%c][%p]-%m%n log4j.appender.DEBUG.datePattern=‘.‘yyyy-MM-dd log4j.appender.DEBUG.Threshold = DEBUG log4j.appender.DEBUG.append=true #log4j.appender.DEBUG.File=/home/admin/pms-api-services/logs/debug/api_services_debug log4j.appender.DEBUG.File=/Users/dddd/Documents/testspace/pms-api-services/logs/debug/api_services_debug
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<dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-aop</artifactId> </dependency> |
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@Aspect @Component publicclass WebLogAspect { private Logger logger = LoggerFactory.getLogger(getClass()); @Pointcut("execution(public * com.itmayiedu.controller..*.*(..))") publicvoid webLog() { } @Before("webLog()") publicvoid doBefore(JoinPoint joinPoint) throws Throwable { // 接收到请求，记录请求内容 ServletRequestAttributes attributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes(); HttpServletRequest request = attributes.getRequest(); // 记录下请求内容 logger.info("URL : " + request.getRequestURL().toString()); logger.info("HTTP_METHOD : " + request.getMethod()); logger.info("IP : " + request.getRemoteAddr()); Enumeration<String> enu = request.getParameterNames(); while (enu.hasMoreElements()) { String name = (String) enu.nextElement(); logger.info("name:{},value:{}", name, request.getParameter(name)); } } @AfterReturning(returning = "ret", pointcut = "webLog()") publicvoid doAfterReturning(Object ret) throws Throwable { // 处理完请求，返回内容 logger.info("RESPONSE : " + ret); } } |
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<dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-cache</artifactId> </dependency> |
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<?xml version="1.0" encoding="UTF-8"?> <ehcache xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="http://ehcache.org/ehcache.xsd" updateCheck="false"> <diskStore path="java.io.tmpdir/Tmp_EhCache" />
<!-- 默认配置 --> <defaultCache maxElementsInMemory="5000" eternal="false" timeToIdleSeconds="120" timeToLiveSeconds="120" memoryStoreEvictionPolicy="LRU" overflowToDisk="false" />
<cache name="baseCache" maxElementsInMemory="10000" maxElementsOnDisk="100000" />
</ehcache> |
配置信息介绍
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@CacheConfig(cacheNames = "baseCache") publicinterface UserMapper { @Select("select * from users where name=#{name}") @Cacheable UserEntity findName(@Param("name") String name); } |
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@Autowired private CacheManager cacheManager; @RequestMapping("/remoKey") publicvoid remoKey() { cacheManager.getCache("baseCache").clear(); }
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在Spring Boot的主类中加入@EnableScheduling注解，启用定时任务的配置
@Component
public class ScheduledTasks {
private static final SimpleDateFormat dateFormat = new SimpleDateFormat("HH:mm:ss");
@Scheduled(fixedRate = 5000)
public void reportCurrentTime() {
System.out.println("现在时间：" + dateFormat.format(new Date()));
}
}
启动加上@EnableAsync ,需要执行异步方法上加入 @Async
配置文件值
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name=itmayiedu.com |
配置文件值
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@Value("${name}") private String name; @ResponseBody @RequestMapping("/getValue") public String getValue() { returnname; } |
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spring.profiles.active=pre |
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application-dev.properties：开发环境 application-test.properties：测试环境 application-prod.properties：生产环境 |
server.port=8888
server.context-path=/itmayiedu
创建application.yml
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server: port: 8090 context-path: /itmayiedu |
使用mvn package 打包
使用java –jar 包名
如果报错没有主清单,在pom文件中新增
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<build> <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-compiler-plugin</artifactId> <configuration> <source>1.8</source> <target>1.8</target> </configuration> </plugin> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> <configuration> <maimClass>com.itmayiedu.app.App</maimClass> </configuration> <executions> <execution> <goals> <goal>repackage</goal> </goals> </execution> </executions>
</plugin> </plugins> </build>
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标签：def cto 例子 根据 embed find return request col
原文地址：https://www.cnblogs.com/itcastwzp/p/10992518.html
