add samples of java chassis

samples/README.md

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+# samples
+
+It's the samples of Java chassis
+1. pojo sample
+2. jaxrs sample
+3. spring mvc sample
+4. code first sample
+5. customer handler sample
+
+## 1. Start the ServiceComb/Service Center
+
+[how to start the service center](http://servicecomb.io/docs/start-sc/)
+
+## 2.Start the Microservice server
+
+```bash
+mvn test -Pserver
+```
+
+## 3.Start the Microservice client
+
+```bash
+mvn test -Pclient
+```

samples/codefirst-sample/pom.xml

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+<?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>samples</artifactId>
+        <groupId>io.servicecomb.samples</groupId>
+        <version>1.0-SNAPSHOT</version>
+    </parent>
+    <modelVersion>4.0.0</modelVersion>
+
+    <groupId>io.servicecomb.samples</groupId>
+    <artifactId>codefirst-sample</artifactId>
+    <dependencies>
+        <dependency>
+            <groupId>io.servicecomb</groupId>
+            <artifactId>handler-bizkeeper</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>io.servicecomb</groupId>
+            <artifactId>handler-loadbalance</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>io.servicecomb</groupId>
+            <artifactId>transport-highway</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>io.servicecomb</groupId>
+            <artifactId>transport-grpc</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>io.servicecomb</groupId>
+            <artifactId>transport-rest-vertx</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>javax.servlet</groupId>
+            <artifactId>javax.servlet-api</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>io.servicecomb</groupId>
+            <artifactId>handler-flowcontrol-qps</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>io.servicecomb</groupId>
+            <artifactId>swagger-generator-springmvc</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>io.servicecomb</groupId>
+            <artifactId>provider-springmvc</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>io.servicecomb</groupId>
+            <artifactId>provider-pojo</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.slf4j</groupId>
+            <artifactId>slf4j-log4j12</artifactId>
+        </dependency>
+    </dependencies>
+
+
+    <profiles>
+        <profile>
+            <id>server</id>
+            <build>
+                <plugins>
+                    <plugin>
+                        <groupId>org.codehaus.mojo</groupId>
+                        <artifactId>exec-maven-plugin</artifactId>
+                        <executions>
+                            <execution>
+                                <phase>test</phase>
+                                <goals>
+                                    <goal>java</goal>
+                                </goals>
+                                <configuration>
+                                    <mainClass>io.servicecomb.samples.codefirst.server.CodeFirstServer</mainClass>
+                                    <arguments>
+                                        <argument>server.microservice.yaml</argument>
+                                    </arguments>
+                                </configuration>
+                            </execution>
+                        </executions>
+                    </plugin>
+                </plugins>
+            </build>
+        </profile>
+        <profile>
+            <id>client</id>
+            <build>
+                <plugins>
+                    <plugin>
+                        <groupId>org.codehaus.mojo</groupId>
+                        <artifactId>exec-maven-plugin</artifactId>
+                        <executions>
+                            <execution>
+                                <phase>test</phase>
+                                <goals>
+                                    <goal>java</goal>
+                                </goals>
+                                <configuration>
+                                    <mainClass>io.servicecomb.samples.codefirst.client.CodeFirstClient</mainClass>
+                                    <arguments>
+                                        <argument>client.microservice.yaml</argument>
+                                    </arguments>
+                                </configuration>
+                            </execution>
+                        </executions>
+                    </plugin>
+                </plugins>
+            </build>
+        </profile>
+    </profiles>
+
+</project>

samples/codefirst-sample/readme.md

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+# Code First
+
+It's the sample of code-first
+
+You can write microservice without swagger contract.
+
+
+## how to write server code 
+
+Just write codes without swagger contract. When the server is starting, it will build the contract and register the service to  the service center.
+
+```java
+@RpcSchema(schemaId = "codeFirst")
+public class CodeFirstPojo {
+    public int reduce(int a, int b) {
+        return a - b;
+    }
+
+    public Person sayHello(Person user) {
+        user.setName("hello " + user.getName());
+        return user;
+    }
+
+    public String saySomething(String prefix, Person user) {
+        return prefix + " " + user.getName();
+    }
+
+}
+```
+
+## How to run sample
+
+### 1. Start the ServiceComb/Service Center
+
+[how to start the service center](http://servicecomb.io/docs/start-sc/)
+
+### 2.Start the Microservice server
+
+```bash
+mvn test -Pserver
+```
+
+### 3.Start the Microservice client
+
+```bash
+mvn test -Pclient
+```

samples/codefirst-sample/src/main/java/io/servicecomb/samples/codefirst/Hello.java

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+/*
+ * Copyright 2017 Huawei Technologies Co., Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package io.servicecomb.samples.codefirst;
+
+
+import io.servicecomb.samples.codefirst.models.Person;
+
+public interface Hello {
+
+    String sayHi(String name);
+
+    String sayHello(Person person);
+}

samples/codefirst-sample/src/main/java/io/servicecomb/samples/codefirst/client/CodeFirstClient.java

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+/*
+ * Copyright 2017 Huawei Technologies Co., Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package io.servicecomb.samples.codefirst.client;
+
+import io.servicecomb.foundation.common.utils.BeanUtils;
+import io.servicecomb.foundation.common.utils.Log4jUtils;
+import io.servicecomb.provider.pojo.RpcReference;
+import io.servicecomb.samples.codefirst.Hello;
+import io.servicecomb.samples.codefirst.models.Person;
+import org.springframework.stereotype.Component;
+
+@Component
+public class CodeFirstClient {
+
+    @RpcReference(microserviceName = "codefirst", schemaId = "codeFirstJaxrsHello")
+    private static Hello jaxrsHello;
+
+    @RpcReference(microserviceName = "codefirst", schemaId = "codeFirstSpringmvcHello")
+    private static Hello springmvcHello;
+
+    @RpcReference(microserviceName = "codefirst", schemaId = "codeFirstHello")
+    private static Hello hello;
+
+    public static void main(String[] args) throws Exception {
+        init(args);
+        System.out.println(hello.sayHi("Java Chassis"));
+        System.out.println(jaxrsHello.sayHi("Java Chassis"));
+        System.out.println(springmvcHello.sayHi("Java Chassis"));
+        Person person = new Person();
+        person.setName("ServiceComb/Java Chassis");
+        System.out.println(hello.sayHello(person));
+        System.out.println(jaxrsHello.sayHello(person));
+        System.out.println(springmvcHello.sayHello(person));
+    }
+
+    public static void init(String[] args) throws Exception {
+        if (args.length != 0){
+            String fileName = args[0];
+            if (!fileName.isEmpty()) {
+                System.setProperty("cse.configurationSource.defaultFileName", fileName);
+            }
+        }
+        Log4jUtils.init();
+        BeanUtils.init();
+        System.clearProperty("cse.configurationSource.defaultFileName");
+    }
+}

samples/codefirst-sample/src/main/java/io/servicecomb/samples/codefirst/models/Person.java

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+/*
+ * Copyright 2017 Huawei Technologies Co., Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package io.servicecomb.samples.codefirst.models;
+
+public class Person {
+
+    private String name;
+
+    public String getName(){
+        return name;
+    }
+
+    public void setName(String name){
+        this.name = name;
+    }
+}

samples/codefirst-sample/src/main/java/io/servicecomb/samples/codefirst/server/CodeFIrstJaxrsHelloImpl.java

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+/*
+ * Copyright 2017 Huawei Technologies Co., Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package io.servicecomb.samples.codefirst.server;
+
+
+import io.servicecomb.provider.pojo.RpcSchema;
+import io.servicecomb.samples.codefirst.Hello;
+import io.servicecomb.samples.codefirst.models.Person;
+
+import javax.ws.rs.POST;
+import javax.ws.rs.Path;
+import javax.ws.rs.Produces;
+import javax.ws.rs.core.MediaType;
+
+@RpcSchema(schemaId = "codeFirstJaxrsHello")
+@Path("/codefirstjaxrshello")
+@Produces(MediaType.APPLICATION_JSON)
+public class CodeFIrstJaxrsHelloImpl implements Hello {
+
+    @Path("/sayhi")
+    @POST
+    @Override
+    public String sayHi(String name) {
+        return "Jaxrs Hello " + name;
+    }
+
+    @Path("/sayhello")
+    @POST
+    @Override
+    public String sayHello(Person person) {
+        return "Jaxrs Hello person " + person.getName();
+    }
+
+}

samples/codefirst-sample/src/main/java/io/servicecomb/samples/codefirst/server/CodeFirstPojoHelloImpl.java

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+/*
+ * Copyright 2017 Huawei Technologies Co., Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package io.servicecomb.samples.codefirst.server;
+
+import io.servicecomb.provider.pojo.RpcSchema;
+import io.servicecomb.samples.codefirst.Hello;
+import io.servicecomb.samples.codefirst.models.Person;
+
+@RpcSchema(schemaId = "codeFirstHello")
+public class CodeFirstPojoHelloImpl implements Hello{
+
+    @Override
+    public String sayHi(String name) {
+        return "Pojo Hello " + name;
+    }
+
+    @Override
+    public String sayHello(Person person) {
+        return "Pojo Hello person " + person.getName();
+    }
+}