springCloud分布式事務實戰（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 ,阿裏連接池) ,
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">
<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
配置發布服務名，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.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
br/>@Mapper
/**
* 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
br/>@Autowired
@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
br/>@RestController
@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
開啟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
br/>@EnableEurekaClient
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
啟動註冊中心，啟動微服務
然後啟動瀏覽器
springCloud分布式事務實戰（六）編寫第二個微服務