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'}]