SpringCloud学习日记(二)——Rest环境搭建

it2023-07-23 71

Springcloud(二)

折腾两天终于完成完成了Rest环境的搭建。。

创建一个Maven项目，并在pom文件中配置好本项目要用的依赖

<?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" 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>org.example</groupId> <artifactId>Springcloud0001</artifactId> <version>1.0-SNAPSHOT</version> <modules> <module>springcloud-api</module> <module>springcloud-provider-8001</module> <module>springcloud-consumer-dept-80</module> </modules> <packaging>pom</packaging> <properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <maven.compiler.source>1.8</maven.compiler.source> <maven.compiler.target>1.8</maven.compiler.target> <junit.version>4.12</junit.version> <lombok.version>1.18.12</lombok.version> <log4j.version> 1.2.12</log4j.version> </properties> <dependencyManagement> <dependencies>  <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-dependencies</artifactId> <version>Greenwich.SR3</version> <type>pom</type> <scope>runtime</scope> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-dependencies</artifactId> <version>2.1.4.RELEASE</version> <type>pom</type> <scope>import</scope> </dependency>  <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>8.0.21</version> </dependency> <dependency> <groupId>com.alibaba</groupId> <artifactId>druid</artifactId> <version>1.2.1</version> </dependency>  <dependency> <groupId>org.mybatis.spring.boot</groupId> <artifactId>mybatis-spring-boot-starter</artifactId> <version>1.3.2</version> </dependency>  <dependency> <groupId>ch.qos.logback</groupId> <artifactId>logback-core</artifactId> <version>1.2.3</version> </dependency>  <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>${junit.version}</version> <scope>test</scope> </dependency> <dependency> <groupId>log4j</groupId> <artifactId>log4j</artifactId> <version> ${log4j.version}</version> </dependency> <dependency> <groupId>org.projectlombok</groupId> <artifactId>lombok</artifactId> <version>${lombok.version}</version> </dependency> </dependencies> </dependencyManagement> <build> </build> </project>

然后在同一个项目中创建不同的模块，共同调用的api(存放调用的类等) 和的生产者与消费者，把生产者和消费者设置为不同端口，模拟远程调用。。

各模块依赖配置共同调用的api(存放调用的类等)

生产者

<?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" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <parent> <artifactId>Springcloud0001</artifactId> <groupId>org.example</groupId> <version>1.0-SNAPSHOT</version> </parent> <modelVersion>4.0.0</modelVersion> <artifactId>springcloud-provider-8001</artifactId> <dependencies>  <dependency> <groupId>org.example</groupId> <artifactId>springcloud-api</artifactId> <version>1.0-SNAPSHOT</version> </dependency>  <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <scope>test</scope> </dependency> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> </dependency> <dependency> <groupId>com.alibaba</groupId> <artifactId>druid</artifactId> </dependency> <dependency> <groupId>log4j</groupId> <artifactId>log4j</artifactId> </dependency> <dependency> <groupId>ch.qos.logback</groupId> <artifactId>logback-core</artifactId> </dependency> <dependency> <groupId>org.mybatis.spring.boot</groupId> <artifactId>mybatis-spring-boot-starter</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-test</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency>             </dependencies> </project>

消费者

在api模块中，只写了个实体类对象Dept;

在生产者写好Dao Controller Service 关于实体类已经在依赖中调用了api模块中的实体类对象了

创建Restful风格的服务请求，且返回格式为json @RestController(控制类返回的数值设为json格式)

在消费者中创建相应的服务请求，且返回格式为json。

//RestTemplate....要在spring中注册 //(url,实体,Class<T>responseType) @Autowired private RestTemplate restTemplate; // 访问远程http服务的方法，简单的restful服务模板

RestTemplate是访问远程http服务的方法，简单的restful服务模板本次调用的方法的源码中的参数设置

@org.springframework.lang.Nullable public <T> T getForObject(java.lang.String url, java.lang.Class<T> responseType, java.lang.Object... uriVariables) throws org.springframework.web.client.RestClientException { /* compiled code */ } @org.springframework.lang.Nullable public <T> T getForObject(java.lang.String url, java.lang.Class<T> responseType, java.util.Map<java.lang.String,?> uriVariables) throws org.springframework.web.client.RestClientException { /* compiled code */ } @org.springframework.lang.Nullable public <T> T postForObject(java.lang.String url, @org.springframework.lang.Nullable java.lang.Object request, java.lang.Class<T> responseType, java.lang.Object... uriVariables) throws org.springframework.web.client.RestClientException { /* compiled code */ } @org.springframework.lang.Nullable public <T> T postForObject(java.lang.String url, @org.springframework.lang.Nullable java.lang.Object request, java.lang.Class<T> responseType, java.util.Map<java.lang.String,?> uriVariables) throws org.springframework.web.client.RestClientException { /* compiled code */ } @org.springframework.lang.Nullable public <T> T postForObject(java.net.URI url, @org.springframework.lang.Nullable java.lang.Object request, java.lang.Class<T> responseType) throws org.springframework.web.client.RestClientException { /* compiled code */ }

简单的使用方法为

// 生产者地址返回参数类型 return restTemplate.getForObject( url , List.class); // 生产者地址传参返回值类型 return restTemplate.postForObject(url , dept , Boolean.class);

运行生产者和消费者，消费者通过端口调用生产者的服务来获取相应的数据。。 Restful环境搭建成功。。

生产者和消费者的环境搭建一下就完成了，感觉还是很OK的…虽然搭建的很简单…

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