Redis Twitter Example

项目代码:https://github.com/spring-projects/spring-data-keyvalue-examples/tree/master/retwisj
项目教程:http://docs.spring.io/spring-data/data-keyvalue/examples/retwisj/current/


此项目使用了gradle构建工具.当前,maven更适合我,所以,我改成了使用maven来管理这个项目.更改如下:
1.新建文件夹retwisj,拷贝项目代码的src目录到此文件夹.

2.根据build.gradle,gradle.properties,更新了jar包的版本,我新建pom.xml内容如下:

<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/maven-v4_0_0.xsd"><modelVersion>4.0.0</modelVersion><groupId>org.springframework.data</groupId><artifactId>retwisj</artifactId><packaging>war</packaging><version>1.0-SNAPSHOT</version><name>Maven Webapp</name><url>http://maven.apache.org</url><properties><project.build.sourceEncoding>UTF-8</project.build.sourceEncoding><slf4j.version>1.7.7</slf4j.version><spring.version>4.1.3.RELEASE</spring.version><spring.data.redis.version>1.4.1.RELEASE</spring.data.redis.version></properties><build><plugins><plugin><groupId>org.apache.maven.plugins</groupId><artifactId>maven-compiler-plugin</artifactId><configuration><source>1.7</source><target>1.7</target></configuration></plugin><plugin><groupId>org.eclipse.jetty</groupId><artifactId>jetty-maven-plugin</artifactId><version>9.2.2.v20140723</version><configuration><webApp><contextPath>/${project.artifactId}</contextPath></webApp><httpConnector><port>8080</port><idleTimeout>60000</idleTimeout></httpConnector></configuration></plugin></plugins></build><dependencies><dependency><groupId>javax.inject</groupId><artifactId>javax.inject</artifactId><version>1</version></dependency><dependency><groupId>org.slf4j</groupId><artifactId>jcl-over-slf4j</artifactId><version>${slf4j.version}</version></dependency><dependency><groupId>org.slf4j</groupId><artifactId>slf4j-log4j12</artifactId><version>${slf4j.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-webmvc</artifactId><version>${spring.version}</version><exclusions><exclusion><groupId>commons-logging</groupId><artifactId>commons-logging</artifactId></exclusion></exclusions></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-tx</artifactId><version>${spring.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-aop</artifactId><version>${spring.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-context-support</artifactId><version>${spring.version}</version></dependency><dependency><groupId>org.springframework.data</groupId><artifactId>spring-data-redis</artifactId><version>${spring.data.redis.version}</version></dependency><dependency><groupId>org.apache.commons</groupId><artifactId>commons-pool2</artifactId><version>2.2</version></dependency><dependency><groupId>redis.clients</groupId><artifactId>jedis</artifactId><version>2.5.2</version></dependency><dependency><groupId>org.codehaus.jackson</groupId><artifactId>jackson-core-asl</artifactId><version>1.9.13</version></dependency><dependency><groupId>org.codehaus.jackson</groupId><artifactId>jackson-mapper-asl</artifactId><version>1.9.13</version></dependency><dependency><groupId>javax.servlet</groupId><artifactId>javax.servlet-api</artifactId><version>3.1.0</version><scope>provided</scope></dependency><dependency><groupId>javax.servlet.jsp</groupId><artifactId>javax.servlet.jsp-api</artifactId><version>2.3.2-b01</version><scope>provided</scope></dependency><dependency><groupId>javax.servlet.jsp.jstl</groupId><artifactId>javax.servlet.jsp.jstl-api</artifactId><version>1.2.1</version><scope>provided</scope></dependency><dependency><groupId>org.apache.taglibs</groupId><artifactId>taglibs-standard-impl</artifactId><version>1.2.1</version></dependency><dependency><groupId>commons-fileupload</groupId><artifactId>commons-fileupload</artifactId><version>1.3.1</version></dependency><dependency><groupId>junit</groupId><artifactId>junit</artifactId><version>4.11</version><scope>test</scope></dependency><dependency><groupId>org.mockito</groupId><artifactId>mockito-all</artifactId><version>1.10.19</version><scope>test</scope></dependency></dependencies></project>

3.导入到IDE开发工具(比如eclipse,IntelliJ IDEA)
4.新建一个maven任务,命令行输入jetty:run,先启动本地的redis服务端,运行此任务.
5.在浏览器输入http://localhost:8080/retwisj


经上面的测试,切换为中文(此应用支持国际化),发现有乱码.解决乱码:在WEB-INF/templates/header.jspf加入<%@ page contentType="text/html;charset=UTF-8" language="java" %>
下面是个截图:

项目教程有比较详细的讲解,我概括一下此项目,关于redis用到的知识点:
1.java基本的数据类型都用redis string.
2.主键自增长使用RedisAtomicLong.
3.private final HashMapper<Post, String, String> postMapper = new DecoratingStringHashMapper<Post>(new JacksonHashMapper<Post>(Post.class));
  对象处理存:使用BoundHashOperations的put或DefaultRedisMap.putAll(postMapper.toHash(p))
  对象处理取:new DecoratingStringHashMapper<Post>(postMapper.fromHash(new DefaultRedisMap<String, String>(postkey, template));
4.使用像intersectAndStore这样的API可以产生一个视图的作用.
5.返回排序分页数据:org.springframework.data.redis.core.RedisTemplate#sort(org.springframework.data.redis.core.query.SortQuery<K>, org.springframework.data.redis.core.BulkMapper<T,V>),详细建议参考:http://redisdoc.com/key/sort.html