dubbo源码 学习笔记(五)

dubbo  接口 Validator

字dubbo的过滤器中 自带了一个javax.validation的验证器

服务端配置

service.setValidation("jvalidation");

xml的配置方式

<!-- 声明需要暴露的服务接口 -->
    <dubbo:service interface="com.alibaba.dubbo.demo.DemoService" ref="demoService" va="jvalidation"/>

引入jar包

		<dependency>
			<groupId>javax.validation</groupId>
			<artifactId>validation-api</artifactId>
			<version>1.0.0.GA</version>
		</dependency>
		<dependency>
			<groupId>org.hibernate</groupId>
			<artifactId>hibernate-validator</artifactId>
			<version>4.2.0.Final</version>
		</dependency>

接口定义

public interface HelloService {
	
	int say(User hello);
}

实体类定义

public class User implements Serializable {

	private static final long serialVersionUID = 1609415403100275799L;

	@NotNull(message ="不能为空")
	public String getName() {
		return name;
	}

	public void setName(String name) {
		this.name = name;
	}

	private String name;
}

消费端测试代码

			HelloService helloService = reference.get();
			
			User user = new User();
//			user.setName("w");
			System.out.println(helloService.say(user));
		

运行 name 为空时 会报异常

com.alibaba.dubbo.rpc.RpcException: Failed to validate service: com.wy.demo.dubbo.service.HelloService, method: say, cause: [ConstraintViolationImpl{interpolatedMessage='不能为空', propertyPath=name, rootBeanClass=class com.wy.demo.dubbo.module.User, messageTemplate='不能为空'}]