编写dubbo测试代码

 

操作步骤：

1、新建dubbo接口测试工程（建议一个dubbo服务工程对应一个dubbo接口测试工程，这样方便代码管理）

　　a)安装好IntelliJ IDEA,打开file->new->Project->maven->next,新建maven工程

　　b)填写groupId、artifactId、version

　　c)填写project name

注意：maven一定要配置成你本地的

2、配置pom.xml文件

 a)配置需要测试的dubbo服务

    <!--配置需要测试的dubbo服务-->
    <dependencies>
        <dependency>
            <artifactId>promotion-interfaces</artifactId>
            <version>1.0.9-SNAPSHOT</version>
            <groupId>com.gome.npop</groupId>
            <exclusions>
                <exclusion>
                    <groupId>*</groupId>
                    <artifactId>*</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
    </dependencies>

注意如果pom.xml报错如下：

Invalid content was found starting with element 'dependency'. One of '{"http://maven.apache.org/POM/4.0.0":parent, "http://maven.apache.org/POM/4.0.0":packaging, "http://maven.apache.org/POM/4.0.0":name, "http://maven.apache.org/POM/4.0.0":description, "http://maven.apache.org/POM/4.0.0":url, "http://maven.apache.org/POM/4.0.0":prerequisites, "http://maven.apache.org/POM/4.0.0":issueManagement, "http://maven.apache.org/POM/4.0.0":ciManagement, "http://maven.apache.org/POM/4.0.0":inceptionYear, "http://maven.apache.org/POM/4.0.0":mailingLists, "http://maven.apache.org/POM/4.0.0":developers, "http://maven.apache.org/POM/4.0.0":contributors, "http://maven.apache.org/POM/4.0.0":licenses, "http://maven.apache.org/POM/4.0.0":scm, "http://maven.apache.org/POM/4.0.0":organization, "http://maven.apache.org/POM/4.0.0":build, "http://maven.apache.org/POM/4.0.0":profiles, "http://maven.apache.org/POM/4.0.0":modules, "http://maven.apache.org/POM/4.0.0":repositories, "http://maven.apache.org/POM/4.0.0":pluginRepositories, "http://maven.apache.org/POM/4.0.0":dependencies, "http://maven.apache.org/POM/4.0.0":reports, "http://maven.apache.org/POM/4.0.0":reporting, "http://maven.apache.org/POM/4.0.0":dependencyManagement, "http://maven.apache.org/POM/4.0.0":distributionManagement, "http://maven.apache.org/POM/4.0.0":properties}' is expected.

解决办法：

在所有的<dependency>...</dependency>外加上<dependencies>...</dependencies>
b)配置需要的一些工具jar包（dubbo工程会有，可参考父工程pom.xml文件）

 <!--配置需要的一些工具jar包-->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>dubbo</artifactId>
            <version>2.5.3</version>
            <exclusions>
                <exclusion>
                    <groupId>org.springframework</groupId>
                    <artifactId>spring</artifactId>
                </exclusion>
            </exclusions>
        </dependency>

  c)配置jmeter相关的jar包，使用的是ApacheJMeter_java,版本号此处使用2.13，可自行在jmeter官网查看版本号，根据需要配置。

    <!--配置jmeter相关的jar包-->
        <dependency>
            <groupId>org.apache.jmeter</groupId>
            <artifactId>ApacheJMeter_java</artifactId>
            <version>2.13</version>
            <exclusions>
                <exclusion>
                    <groupId>d-haven-managed-pool</groupId>
                    <artifactId>d-haven-managed-pool</artifactId>
                </exclusion>
                <exclusion>
                    <artifactId>commons-math3</artifactId>
                    <groupId>commons-math3</groupId>
                </exclusion>
                <exclusion>
                    <artifactId>commons-pool2</artifactId>
                    <groupId>commons-pool2</groupId>
                </exclusion>
            </exclusions>
            <!--<scope>provided</scope>-->
        </dependency>

d)配置build相关（打包需要），建议就使用如下配置，不要做其他更改，使用其他配置，可能导致产生一些无法预知的问题。

    <!--配置build相关（打包需要）-->
    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-shade-plugin</artifactId>
                <version>1.4</version>
                <executions>
                    <execution>
                        <phase>package</phase>
                        <goals>
                            <goal>shade</goal>
                        </goals>
                        <configuration>
                            <filters>
                                <filter>
                                    <artifact>*:*</artifact>
                                    <excludes>
                                        <exclude>META-INF/*.SF</exclude>
                                        <exclude>META-INF/*.DSA</exclude>
                                        <exclude>META-INF/*.RSA</exclude>
                                    </excludes>
                                </filter>
                            </filters>

                            <transformers>
                                <transformer
                                        implementation="org.apache.maven.plugins.shade.resource.AppendingTransformer">
                                    <resource>META-INF/spring.handlers</resource>
                                </transformer>
                                <transformer
                                        implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
                                    <mainClass>com.fxc.rpc.impl.member.MemberProvider</mainClass>
                                </transformer>
                                <transformer
                                        implementation="org.apache.maven.plugins.shade.resource.AppendingTransformer">
                                    <resource>META-INF/spring.schemas</resource>
                                </transformer>
                            </transformers>
                        </configuration>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>

e)阿里的Dubbo框架已经集成了Zookeeper、Spring等框架所以无须再添加这些框架的引用，但是有一个例外就是zkclient，如果没有引用将会抛出异常信息,所以添加zkclient的jar

        <dependency>
            <groupId>com.github.sgroschupf</groupId>
            <artifactId>zkclient</artifactId>
            <version>0.1</version>
        </dependency>

 

3、Dubbo配置

a)编写dubbo消费端配置文件

resources文件夹下面新建dubbo-client.xml 。 如图，发现没有spring文件

在pom.xml里面配置spring依赖

   <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>4.1.7.RELEASE</version>
        </dependency>

配置好刷新包之后，再次选择

创建好spring配置文件dubbo-client.xml ：

加入红框内容，否则

http://code.alibabatech.com/schema/dubbo
http://code.alibabatech.com/schema/dubbo/dubbo.xsd
这两句提示未使用，并且dubbo-client.xml文件报 Namespace 'dubbo' is not bound

<dubbo:registry>:dubbo 服务注册配置

<dubbo:application>:dubbo应用名称

<dubbo：reference>：生成远程服务代理，可以像使用本地bean一样使用远程服务。

4、基本配置全部完毕，开始Java类编写：

如下例子：

查询商家是否参购物券活动

接口类：com.gome.coupon.interfaces.dubbo.IPromotionAndCouponManager

方法：isShopPlatformCouponActivity(List<String> shopNoList,String userId)

参数：参数1：{"80007138","81012768","81012772"}， 参数2：“171170338”

新建类ContextGetBean

import org.springframework.context.support.ClassPathXmlApplicationContext;

/**
 * Created by zhaichao on 2017/6/27.
 */
public class ContextGetBean {
    private static ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext(new String[]{"classpath:dubbo-client.xml"});
    public static void ContextGetBean(){
        context.start();
    }
public static Object getBean(String classpath,String beanName){
    return context.getBean(beanName);
}
}

jmeter执行类  CouponActivity

import com.gome.coupon.interfaces.dubbo.IPromotionAndCouponManager;
import com.gome.coupon.model.cartBean.ResultDO;
import com.gome.coupon.model.cartBean.ShopPromotionResult;
import org.apache.jmeter.config.Arguments;
import org.apache.jmeter.protocol.java.sampler.AbstractJavaSamplerClient;
import org.apache.jmeter.protocol.java.sampler.JavaSamplerContext;
import org.apache.jmeter.samplers.SampleResult;

import java.util.ArrayList;
import java.util.List;
import java.util.Map;

/**
 * Created by zhaichao on 2017/6/27.
 */
public class CouponActivity extends AbstractJavaSamplerClient {
    private IPromotionAndCouponManager iPromotionAndCouponManager;
    private Arguments params;
    public void setupTest(JavaSamplerContext args)
    {
        iPromotionAndCouponManager=(IPromotionAndCouponManager)ContextGetBean.getBean("classpath:dubbo-client.xml","promotionAndCouponManager");

    }

    public Arguments getDefaultParameters(){
        // ResultDO<Map<String, ShopPromotionResult>> isShopPlatformCouponActivity(List<String> var1, String var2);
        this.params=new Arguments();
        this.params.addArgument("shopNoList","\"80007138\",\"81012768\",\"81012772\"");
        this.params.addArgument("userId","171170338");
        return params;
    }

    public SampleResult runTest(JavaSamplerContext args)
    {
        String shopNoList = args.getParameter("shopNoList","\"80007138\",\"81012768\",\"81012772\"");
        String userId = args.getParameter("userId","171170338");
        shopNoList=shopNoList.replace("\"","");
        String[] noList = shopNoList.split(",");
        List<String> list = java.util.Arrays.asList(noList);
        List arrList = new ArrayList(list);
        for (int i = 0 ; i < noList.length;i++){
            arrList.add(noList[i]);
        }
        ResultDO<Map<String, ShopPromotionResult>> rd = iPromotionAndCouponManager.isShopPlatformCouponActivity(list,userId);
        SampleResult sr = new SampleResult();
        sr.sampleStart();
        try{
            if(rd != null && rd.isSuccess()==true){
                this.getLogger().info("正确通过");
                sr.setSuccessful(true);//必须得加，否则在jmeter中执行的话查看结果树是红色的
            }else{
                this.getLogger().info(rd.getErrorMsg());
                this.getLogger().info("未抛异常");
                sr.setSuccessful(false);

            }
        }catch (Exception e){
            sr.setSuccessful(false);
            e.getStackTrace();
            this.getLogger().error("抛出异常如下："+e);
        }
        sr.sampleEnd();
        return sr;
    }

    public void teardownTest(JavaSamplerContext args)
    {

    }

    public static void main(String[] args){
        CouponActivity couponActivity = new CouponActivity();
        Arguments param = couponActivity.getDefaultParameters();
        JavaSamplerContext javaSamplerContext = new JavaSamplerContext(param);
        couponActivity.setupTest(javaSamplerContext);
        SampleResult result = couponActivity.runTest(javaSamplerContext);
        couponActivity.teardownTest(javaSamplerContext);
 }

}

 

5、遇到的问题

1、在执行主函数如果报错如下：

原因：在string转List<String>的时候代码：

String shopNoList = args.getParameter("shopNoList","\"80007138\",\"81012768\",\"81012772\"");
        String userId = args.getParameter("userId","171170338");
        shopNoList=shopNoList.replace("\"","");
        String[] noList = shopNoList.split(",");
        List<String> list = java.util.Arrays.asList(noList);
          for (int i = 0 ; i < noList.length;i++){
            list.add(noList[i]);
        }

修正之后如下：

String shopNoList = args.getParameter("shopNoList","\"80007138\",\"81012768\",\"81012772\"");
        String userId = args.getParameter("userId","171170338");
        shopNoList=shopNoList.replace("\"","");
        String[] noList = shopNoList.split(",");
        List<String> list = java.util.Arrays.asList(noList);
        List arrList = new ArrayList(list);
        for (int i = 0 ; i < noList.length;i++){
            arrList.add(noList[i]);
        }

原因：

 java.lang.UnsupportedOperationException是指请求的方法不被支持的异常。在从Arrays.asList()转化过来的List的不支持add()和remove()方法，这是由于从Arrays.asList()返回的是java.util.Arrays$ArrayList，
而不是ArrayList。Arrays$ArrayList和ArrayList都是继承AbstractList，add() 和remove()等方法在AbstractList中默认throw UnsupportedOperationException而不做任何操作。ArrayList重写这些方法对List进行操作，
而Arrays$ArrayList却没有重写add()和 remove()等方法，所以对从Arrays.asList()转化过来的List进行add()和remove()会出现UnsupportedOperationException异常。