spring cloud alibaba开发笔记一（项目初始化）
作者：互联网
初始化项目
首先创建一个父项目。父项目的pom如图所示：
<?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>e-commerce-springcloud</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>pom</packaging>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.3.1.RELEASE</version>
</parent>
<properties>
<!-- Spring Cloud Hoxton.SR8 依赖 -->
<spring-cloud.version>Hoxton.SR8</spring-cloud.version>
<!-- spring cloud alibaba 依赖 -->
<spring-cloud-alibaba.version>2.2.4.RELEASE</spring-cloud-alibaba.version>
</properties>
<dependencies>
<!-- lombok 工具通过在代码编译时期动态的将注解替换为具体的代码,
IDEA 需要添加 lombok 插件 -->
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.16.18</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-actuator</artifactId>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
<version>3.11</version>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-collections4</artifactId>
<version>4.4</version>
</dependency>
<dependency>
<groupId>cn.hutool</groupId>
<artifactId>hutool-all</artifactId>
<version>5.6.0</version>
</dependency>
<!-- 引入jwt-->
<dependency>
<groupId>io.jsonwebtoken</groupId>
<artifactId>jjwt-api</artifactId>
<version>0.10.5</version>
</dependency>
<dependency>
<groupId>io.jsonwebtoken</groupId>
<artifactId>jjwt-impl</artifactId>
<version>0.10.5</version>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>io.jsonwebtoken</groupId>
<artifactId>jjwt-jackson</artifactId>
<version>0.10.5</version>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
<version>1.2.47</version>
</dependency>
</dependencies>
<!-- 项目依赖管理 父项目只是声明依赖，子项目需要写明需要的依赖(可以省略版本信息) -->
<dependencyManagement>
<dependencies>
<!-- spring cloud 依赖 -->
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>${spring-cloud.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
<!-- spring cloud alibaba 依赖 -->
<dependency>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-alibaba-dependencies</artifactId>
<version>${spring-cloud-alibaba.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<!-- 配置远程仓库 -->
<repositories>
<repository>
<id>spring-milestones</id>
<name>Spring Milestones</name>
<url>https://repo.spring.io/milestone</url>
<snapshots>
<enabled>false</enabled>
</snapshots>
</repository>
</repositories>
</project>完成通用模块的编写：
通用模块pom文件示例：
<?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>e-commerce-springcloud</artifactId>
<groupId>com.taluohui.ecommerce</groupId>
<version>1.0-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>e-commerce-common</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>jar</packaging>
<name>e-commerce-common</name>
<description>通用模块</description>
</project>添加package-info占位文件
统一通用响应对象CommonResponse
创建vo包，并添加统一通用响应对象CommonResponse
/**
* <h1>通用响应对象定义</h1>
* {
* “code”: 0,
* "message": "",
* "data": {}
* }
*/
@Data
@NoArgsConstructor
@AllArgsConstructor
public class CommonResponse<T> implements Serializable {
/** 错误码 */
private Integer code;
/** 错误消息 */
private String message;
/** 泛型响应数据 */
private T data;
public CommonResponse(Integer code, String message) {
this.code = code;
this.message = message;
}
}通用配置模块初始化：
通用配置模块pom文件示例：
<?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>e-commerce-springcloud</artifactId>
<groupId>com.taluohui.ecommerce</groupId>
<version>1.0-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>e-commerce-mvc-config</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>jar</packaging>
<!--模块名及描述信息-->
<name>e-commerce-mvc-config</name>
<description>通用配置模块</description>
<dependencies>
<!--引入Web功能-->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>com.taluohui.ecommerce</groupId>
<artifactId>e-commerce-common</artifactId>
<version>1.0-SNAPSHOT</version>
</dependency>
</dependencies>
</project>添加package-info占位文件
实现统一响应
/**
* <h1>实现统一响应</h1>
*/
@RestControllerAdvice(value = "com.taluohui.ecommerce")
public class CommonResponseDataAdvice implements ResponseBodyAdvice<Object> {
/**
* <h2>判断是否需要对响应进行处理</h2>
*/
@Override
@SuppressWarnings("all")
public boolean supports(MethodParameter methodParameter, Class<? extends HttpMessageConverter<?>> aClass) {
if(methodParameter.getDeclaringClass().isAnnotationPresent(IgnoreResponseAdvice.class)) {
return false;
}
if(methodParameter.getMethod().isAnnotationPresent(IgnoreResponseAdvice.class)) {
return false;
}
return true;
}
@Override
@SuppressWarnings("all")
public Object beforeBodyWrite(Object o, MethodParameter methodParameter, MediaType mediaType,
Class<? extends HttpMessageConverter<?>> aClass,
ServerHttpRequest serverHttpRequest,
ServerHttpResponse serverHttpResponse) {
//定义最终的返回对象
CommonResponse<Object> response = new CommonResponse<>(0, "");
if (null == o) {
return response;
} else if (o instanceof CommonResponse) {
response = (CommonResponse<Object>) o;
} else {
response.setData(o);
}
return response;
}
}全局异常捕获处理
/**
* <h1>全局异常捕获处理</h1>
*/
@Slf4j
@RestControllerAdvice
public class GlobalExceptionAdvice {
@ExceptionHandler(value = Exception.class)
public CommonResponse<String> handlerCommerceException(
HttpServletRequest req, Exception ex)
{
CommonResponse<String> response = new CommonResponse<>(-1, "business error");
response.setData(ex.getMessage());
log.error("commerce service has error: [{}]", ex.getMessage(), ex);
return response;
}
}标签：commerce,spring,boot,alibaba,CommonResponse,org,response,cloud 来源： https://blog.csdn.net/qq_41054749/article/details/122764729