（1）創建工程
springCloud分佈式事務實戰（六）編寫第二個微服務
（2）添加 jar pom.xml
添加:springboot 父， mysql連接，(mybatis， spring-mybatis springboot ,阿里連接池) ,
服務中心客戶端。
<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">
<modelVersion>4.0.0</modelVersion>
<groupId>com.jh</groupId>
<artifactId>BlockMicroService</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>BlockMicroService</name>
<url>http://maven.apache.org</url>
<!-- 1 spring boot parent -->
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.4.3.RELEASE</version>
<relativePath />
</parent>
<!--1 屬性 -->
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.7</java.version>
<maven.compile.source>1.7</maven.compile.source>
<maven.compile.target>1.7</maven.compile.target>
<spring-cloud.version>Dalston.SR1</spring-cloud.version>
<lcn.last.version>4.1.0</lcn.last.version>
</properties>
<dependencies>
<!--2 mysql -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.43</version>
</dependency>
<!-- 3 包括mybatis,mybatis-spring,spring boot,spring 等 -->
<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
<version>1.1.1</version>
</dependency>
<!--4 註冊中心 -->
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-eureka</artifactId>
</dependency>
<!-- 5 連接池 -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>1.0.19</version>
</dependency>
</dependencies>
<!-- spring cloud 依賴版本 -->
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>Dalston.SR3</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
</project>
（3）編寫配置文件Application.properties
配置發佈服務名，端口；配置中心地址；連接mysql 參數
#1 register server
#服務名
spring.application.name =themeMicroService
#服務端口
server.port =8021
#註冊中心地址
eureka.client.service-url.defaultZone=http://127.0.0.1:8001/eureka
spring.datasource.driver-class-name =com.mysql.jdbc.Driver
spring.datasource.url=jdbc:mysql://localhost:3306/forum2?useUnicode=true&characterEncoding=utf8&autoReconnect=true&failOverReadOnly=false
spring.datasource.username= root
spring.datasource.password=
spring.datasource.initialize =true
init-db= true
logging.level.com.codingapi=debug
（4）編寫實體，dao和映射。
實體：
public class Theme {
private Integer id;
private String tName;
private String tDescription;
get set
}
Dao 和映射
@Mapper
public interface ThemeDao {
/**
* 查詢
*
* @return
*/
@Select(value = "select * from theme")
public List<Theme> getThemeList();
/**
* 插入
*
* @param bname
* @param bDescription
* @return
*/
@Insert(value = "insert into theme(tName,tDescription,blockId)" + " values(#{tName},#{tDescription},"
+ "#{blockId})")
public int saveTheme(@Param("tName") String tName, @Param("tDescription") String tDescription, @Param("blockId") Integer blockId);
}
（5）編寫服務層
服務接口
public interface ThemeService {
List<Theme> getThemeList();
int saveTheme(String tName, String tDescription , Integer blockId);
}
服務實現：
package com.jh.service.impl;
@Service
public class ThemeServiceImpl implements ThemeService {
@Autowired
private ThemeDao themeDao;
@Override
public List<Theme> getThemeList() {
return themeDao.getThemeList();
}
@Override
public int saveTheme(String tName, String tDescription, Integer blockId) {
// TODO Auto-generated method stub
int rs1 = themeDao.saveTheme(tName, tDescription, blockId);// 保存1
return rs1;
}
}
（6）編寫控制層
@RestController
public class ThemeController {
@Autowired
private ThemeService themeService;// 塊服務，第一個服務
// 1接受請求
@RequestMapping(value = "/getThemeList", method = RequestMethod.GET)
public List<Theme> getThemeList() {
List<Theme> ThemeList = themeService.getThemeList();
return ThemeList;
}
@RequestMapping(value = "/saveTheme", method = RequestMethod.GET)
public int saveTheme() {
Integer result = themeService.saveTheme("jwg2", "jwg2", 1);
return result
}
}
（7） 編寫主程序
開啓springboot應用程序，註冊中心客戶端，mybatis掃描和定義一個數據源
package com.jh;
@SpringBootApplication //spring boot應用程序
@EnableEurekaClient
@MapperScan("com.jh.dao")
public class ThemeMicroService {
public static void main(String[] args) {
SpringApplication.run(ThemeMicroService.class, args);
}
//1環境
@Autowired
private Environment env;
@Bean
public DataSource dataSource() {
DruidDataSource dataSource = new DruidDataSource();
dataSource.setUrl(env.getProperty("spring.datasource.url"));
dataSource.setUsername(env.getProperty("spring.datasource.username"));//用戶名
dataSource.setPassword(env.getProperty("spring.datasource.password"));//密碼
dataSource.setInitialSize(10);
dataSource.setMaxActive(50);
dataSource.setMinIdle(1);
dataSource.setMaxWait(60000);
dataSource.setValidationQuery("SELECT 1");
dataSource.setTestOnBorrow(false);
dataSource.setTestWhileIdle(true);
dataSource.setPoolPreparedStatements(false);
return dataSource;
}
}
（8）測試
啓動註冊中心，啓動微服務
然後啓動瀏覽器
