kafka consumer demo

kafka消费者demo

pom文件

 <?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>com.donfaquir.kafka</groupId>
     <artifactId>consumer-demo</artifactId>
     <version>1.0-SNAPSHOT</version>
     <packaging>jar</packaging>

     <dependencies>
         <dependency>
             <groupId>org.apache.kafka</groupId>
             <artifactId>kafka_2.10</artifactId>
             <!-- 如果版本和kafka版本不匹配，会出现消费不到数据的问题 -->
             <version>0.9.0.0</version>
             <exclusions>
                 <exclusion>
                     <groupId>org.apache.zookeeper</groupId>
                     <artifactId>zookeeper</artifactId>
                 </exclusion>
                 <exclusion>
                     <groupId>log4j</groupId>
                     <artifactId>log4j</artifactId>
                 </exclusion>
                 <exclusion>
                     <groupId>org.slf4j</groupId>
                     <artifactId>slf4j-log4j12</artifactId>
                 </exclusion>
                 <exclusion>
                     <groupId>org.slf4j</groupId>
                     <artifactId>slf4j-api</artifactId>
                 </exclusion>
             </exclusions>
         </dependency>
        <!-- <dependency>
             <groupId>log4j</groupId>
             <artifactId>log4j</artifactId>
             <version>1.2.17</version>
         </dependency>-->
         <dependency>
             <groupId>org.apache.zookeeper</groupId>
             <artifactId>zookeeper</artifactId>
             <version>3.4.6</version>
             <exclusions>
                 <exclusion>
                     <groupId>org.slf4j</groupId>
                     <artifactId>slf4j-log4j12</artifactId>
                 </exclusion>
                 <exclusion>
                     <groupId>org.slf4j</groupId>
                     <artifactId>slf4j-api</artifactId>
                 </exclusion>
             </exclusions>
         </dependency>
         <!-- fastjson -->
         <dependency>
             <groupId>com.alibaba</groupId>
             <artifactId>fastjson</artifactId>
             <version>1.2.11</version>
         </dependency>

         <dependency>
             <groupId>org.slf4j</groupId>
             <artifactId>slf4j-api</artifactId>
             <version>1.7.25</version>
         </dependency>

         <dependency>
             <groupId>ch.qos.logback</groupId>
             <artifactId>logback-classic</artifactId>
             <version>1.1.6</version>
             <exclusions>
                 <exclusion>
                     <groupId>org.slf4j</groupId>
                     <artifactId>slf4j-api</artifactId>
                 </exclusion>
             </exclusions>
         </dependency>
     </dependencies>

     <build>
         <finalName>kafka_consumer_demo</finalName>
         <resources>
             <!--指定src/main/resources资源要过滤-->
             <resource>
                 <directory>src/main/resources</directory>
                 <filtering>true</filtering>
             </resource>
         </resources>
         <plugins>
             <!-- 可执行jar插件 -->
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-jar-plugin</artifactId>
                 <configuration>
                     <outputDirectory>${project.build.directory}/${build.finalName}</outputDirectory>
                     <archive>
                         <manifest>
                             <addClasspath>true</addClasspath>
                             <classpathPrefix>lib/</classpathPrefix>
                             <mainClass>com.donfaquir.kafka.KafkaComsumerDemo</mainClass>
                         </manifest>
                         <manifestEntries>
                             <Class-Path>.</Class-Path>
                         </manifestEntries>
                     </archive>
                     <excludes>
                         <exclude>**/*.xml</exclude>
                         <exclude>**/*.conf</exclude>
                         <exclude>**/*.properties</exclude>
                         <exclude>**/*.bat</exclude>
                     </excludes>

                 </configuration>
             </plugin>
             <!-- maven资源文件复制插件 -->
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-resources-plugin</artifactId>
                 <version>2.7</version>
                 <executions>
                     <execution>
                         <id>copy-resources</id>
                         <!-- here the phase you need -->
                         <phase>package</phase>
                         <goals>
                             <goal>copy-resources</goal>
                         </goals>
                         <configuration>
                             <outputDirectory>${project.build.directory}/${build.finalName}</outputDirectory>
                             <resources>
                                 <resource>
                                     <directory>src/main/resources</directory>
                                     <includes>
                                         <exclude>**/*.xml</exclude>
                                         <exclude>**/*.conf</exclude>
                                         <exclude>**/*.properties</exclude>
                                         <exclude>**/*.bat</exclude>
                                     </includes>
                                     <filtering>true</filtering>
                                 </resource>
                             </resources>
                             <encoding>UTF-8</encoding>
                         </configuration>
                     </execution>
                 </executions>
             </plugin>
             <!-- 依赖包插件 -->
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-dependency-plugin</artifactId>
                 <executions>
                     <execution>
                         <id>copy-dependencies</id>
                         <phase>package</phase>
                         <goals>
                             <goal>copy-dependencies</goal>
                         </goals>
                         <configuration>
                             <outputDirectory>${project.build.directory}/${build.finalName}/lib</outputDirectory>
                             <!-- 是否不包含间接依赖 -->
                             <excludeTransitive>false</excludeTransitive>
                             <!-- 忽略版本 -->
                             <stripVersion>false</stripVersion>
                         </configuration>
                     </execution>
                 </executions>
             </plugin>

             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-surefire-plugin</artifactId>
                 <version>2.18.1</version>
                 <configuration>
                     <skipTests>true</skipTests>
                 </configuration>
             </plugin>
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-compiler-plugin</artifactId>
                 <version>3.1</version>
                 <configuration>
                     <encoding>UTF-8</encoding>
                     <source>1.8</source>
                     <target>1.8</target>

                 </configuration>
                 <dependencies>
                     <dependency>
                         <groupId>org.codehaus.plexus</groupId>
                         <artifactId>plexus-compiler-javac</artifactId>
                         <version>2.5</version>
                     </dependency>
                 </dependencies>
             </plugin>
         </plugins>
     </build>
 </project>

consumer类