SpringBoot使用GTS的示例详解
1. 依赖类库txc-client.jar, txt-client-spring-cloud-2.0.1.jar
2. 使用TxcDataSource代理源数据源【注意:dbcp2.BasicDataSource不支持,可以使用DruidDataSource】
3. 添加自动配置类文件
package com.bodytrack.restapi; import com.taobao.txc.client.aop.TxcTransactionScaner; import com.taobao.txc.client.boot.TxcSpringBootProperties; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty; import org.springframework.boot.context.properties.EnableConfigurationProperties; import org.springframework.context.ApplicationContext; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import org.springframework.context.annotation.DependsOn; @Configuration @EnableConfigurationProperties({TxcSpringBootProperties.class}) public class TxcSpringBootAutoConfiguration { @Autowired private TxcSpringBootProperties txcSpringBootProperties; @Autowired private ApplicationContext applicationContext; private static boolean isEmpty(String str) { return str == null || str.length() == 0; } @Bean(name = "txcScanner") @ConditionalOnProperty( prefix = "spring.boot.txc", name = {"txcServerGroup"} ) //定义声明式事务,要想让事务annotation感知的话,要在这里定义一下 public TxcTransactionScaner txcTransactionScaner() { String appName = this.txcSpringBootProperties.getTxcAppName() == null ? this.applicationContext.getEnvironment().getProperty("spring.application.name") : this.txcSpringBootProperties.getTxcAppName(); String txServiceGroup = this.txcSpringBootProperties.getTxcServerGroup(); int mode = this.txcSpringBootProperties.getMode() == 0 ? 1 : this.txcSpringBootProperties.getMode(); TxcTransactionScaner txcTransactionScanner = new TxcTransactionScaner(appName, txServiceGroup, mode, this.txcSpringBootProperties.getUrl()); if (!isEmpty(this.txcSpringBootProperties.getAccessKey())) { txcTransactionScanner.setAccessKey(this.txcSpringBootProperties.getAccessKey()); } if (!isEmpty(this.txcSpringBootProperties.getSecretKey())) { txcTransactionScanner.setSecretKey(this.txcSpringBootProperties.getSecretKey()); } return txcTransactionScanner; } }
4. 添加GTS配置
spring: boot: txc: txcAppName: demo txcServerGroup: txc_test_public.1129361738553704.QD #公网测试的专用事务分组 url: https://test-cs-gts.aliyuncs.com #公网测试url accessKey: xxx #非测试时需提供 secretKey: xxxx #非测试时需提供
5. 发送rest请求时,请求添加header(TXC_XID,BEGIN_COUNT,COMMIT_COUNT)
public String callTestTxc() { HttpHeaders requestHeaders = new HttpHeaders(); requestHeaders.set("TXC_XID", String.valueOf(TxcContext.getCurrentXid())); requestHeaders.set("BEGIN_COUNT", String.valueOf(TxcContext.getBeginCount())); requestHeaders.set("COMMIT_COUNT", String.valueOf(TxcContext.getCommitCount())); HttpEntity<String> entity = new HttpEntity<>("parameters", requestHeaders); String restUrl = String.format("%s/api/scoreService/testTxc", "http://10.0.0.5:8762"); ResponseEntity<String> restData = restTemplate.exchange(restUrl, HttpMethod.GET, entity, String.class); return restData.toString(); }
6. 发起全局事务使用注解@TxcTransaction
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