用java連接apache geode
阿新 • • 發佈：2017-09-27
geode java apache 分布式 cache
昨天研究了半天apache geode，通過gfsh命令查詢和操作比較簡單，但是如何通過程序查詢因為資歷太少，沒有搞懂，試驗了半天才明白
1.創建測試region
create region --name=user --type=REPLICATE_PERSISTENT
2.用eclipse創建maven工程
修改pom.xml,需要引入gemfire-8.2.0.jar,這個在
<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>io.proinsight</groupId>
<artifactId>hellogeode</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>hellogeode</name>
<url>http://maven.apache.org</url>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<dependencies>
<!-- https://mvnrepository.com/artifact/org.apache.geode/geode-core -->
<dependency>
<groupId>org.apache.geode</groupId>
<artifactId>geode-core</artifactId>
<version>1.2.0</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.apache.geode/geode-json -->
<dependency>
<groupId>org.apache.geode</groupId>
<artifactId>geode-json</artifactId>
<version>1.2.0</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.apache.geode/geode-common -->
<dependency>
<groupId>org.apache.geode</groupId>
<artifactId>geode-common</artifactId>
<version>1.2.0</version>
</dependency>
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.17</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.apache.logging.log4j/log4j-core -->
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-core</artifactId>
<version>2.8.2</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.apache.logging.log4j/log4j-api -->
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-api</artifactId>
<version>2.8.2</version>
</dependency>
<!-- https://mvnrepository.com/artifact/log4j/log4j -->
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.17</version>
</dependency>
<dependency>
<groupId>commons-codec</groupId>
<artifactId>commons-codec</artifactId>
<version>1.10</version>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
<version>3.4</version>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
<version>1.2.13</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.3</version>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-jar-plugin</artifactId>
<version>2.6</version>
<configuration>
<archive>
<manifest>
<addClasspath>true</addClasspath>
<classpathPrefix>lib/</classpathPrefix>
<mainClass>io.proinsight.hellogeode.App</mainClass>
</manifest>
</archive>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-dependency-plugin</artifactId>
<version>2.10</version>
<executions>
<execution>
<id>copy-dependencies</id>
<phase>package</phase>
<goals>
<goal>copy-dependencies</goal>
</goals>
<configuration>
<outputDirectory>${project.build.directory}/lib</outputDirectory>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
</project>新建UserBean.java
package io.proinsight.hellogeode;
import java.io.DataInput;
import java.io.DataOutput;
import java.io.IOException;
import java.util.Date;
import org.apache.geode.DataSerializable;
import org.apache.geode.DataSerializer;
public class UserBean implements DataSerializable{
/**
* 必須有這個方法，否則查詢會報沒有init()這個方法
* */
public UserBean() {
}
public UserBean(int id2, int i, String string, Date date) {
// TODO Auto-generated constructor stub
this.id=id2;
this.age=i;
this.name=string;
this.createTime=date;
}
/**
* id
* */
private int id;
/**
* 年齡
* */
private int age;
/**
* 姓名
* */
private String name;
/**
* 創建時間
* */
private Date createTime;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Date getCreateTime() {
return createTime;
}
public void setCreateTime(Date createTime) {
this.createTime = createTime;
}
public void fromData(DataInput in) throws IOException, ClassNotFoundException {
this.id = in.readInt();
this.age=in.readInt();
this.name = in.readUTF();
this.createTime = DataSerializer.readDate(in);
}
public void toData(DataOutput out) throws IOException {
out.writeInt(this.id);
out.writeInt(this.age);
out.writeUTF(this.name);
DataSerializer.writeDate(this.createTime, out);
}
}修改App.java
package io.proinsight.hellogeode;
import java.util.Date;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import org.apache.geode.DataSerializer;
import org.apache.geode.cache.Region;
import org.apache.geode.cache.RegionFactory;
import org.apache.geode.cache.client.ClientCache;
import org.apache.geode.cache.client.ClientCacheFactory;
import org.apache.geode.cache.client.ClientRegionFactory;
import org.apache.geode.cache.client.ClientRegionShortcut;
import org.apache.geode.cache.query.internal.ResultsBag;
import com.alibaba.fastjson.JSON;
/**
* Hello world!
*
*/
public class App
{
String regionName="user";
int userNum=10;
public static void main( String[] args )
{
new App().test();
}
public void test(){
Region region = null;
ClientCache cache = new ClientCacheFactory().addPoolLocator("192.168.60.50", 10334).create();
ClientRegionFactory rf = cache.createClientRegionFactory(ClientRegionShortcut.CACHING_PROXY);
//打開user表
region = rf.create(regionName);
System.out.println("開始創建用戶");
create(region);
select(region);
System.out.println("完成創建用戶");
System.out.println("開始修改用戶");
update(region);
select(region);
System.out.println("完成修改用戶");
System.out.println("開始刪除用戶");
delete(region,108);
select(region);
System.out.println("完成刪除用戶");
System.out.println("開始清空表");
truncate(region);
select(region);
System.out.println("完成清空表");
//關閉表
region.close();
}
/**
* 查詢user表
* */
public void select(Region region){
try {
Object objList = region.query("select * from /"+regionName+" u where u.age > 15");
if(objList != null && objList instanceof ResultsBag){
Iterator iter = ((ResultsBag) objList).iterator();
while(iter.hasNext()){
UserBean userBean = (UserBean) iter.next();
System.out.println("User信息："+JSON.toJSONString(userBean));
}
}
Object obj = region.get(108);
if(obj != null && obj instanceof UserBean){
System.out.println("User108信息"+JSON.toJSONString(obj));
}
}catch (Exception e){
e.printStackTrace();
// logger.error("error occured.", e);
}
}
/**
* 增加10個
* */
public void create(Region region){
for (int i = 0; i < userNum; i++) {
int id = i+100;
region.put(id, new UserBean(id,10+i,"username:"+id,new Date()));
}
}
/**
* 修改
* */
public void update(Region region){
UserBean user108= (UserBean) region.get(108);
if(user108 != null && user108 instanceof UserBean){
System.out.println("User108信息"+JSON.toJSONString(user108));
//修改年齡為
user108.setAge(12);
region.put(user108.getId(), user108);
}
}
/**
* 刪除某個用戶
* */
public void delete(Region region,Integer id){
region.remove(id);
}
/**
* 清空表
* */
public void truncate(Region region){
region.clear();
}
}3.打包
maven install一下
在target目錄下有對應的jar包
然後把hellogeode-0.0.1-SNAPSHOT.jar拷貝到geode服務器上某個目錄例如/tmp/t/下
4.發布Jar到geode裏
為啥要發布到geode裏呢？因為我們用UserBean的序列化和反序列化作為表結構，因此deode查詢時需要UserBean.class，因此我們發布hellogeode-0.0.1-SNAPSHOT.jar到geode，主要是為了把UserBean.class導入到geode裏；
gfsh>deploy --jar=/tmp/t/hellogeode-0.0.1-SNAPSHOT.jar Member | Deployed JAR | Deployed JAR Location -------- | ----------------------------- | ----------------------------------------------------------------- server50 | hellogeode-0.0.1-SNAPSHOT.jar | /opt/apache-geode-1.2.1/server50/hellogeode-0.0.1-SNAPSHOT.v1.jar
若是我們對UserBean有修改的話，需要先卸載jar,然後再重新發布
gfsh>undeploy --jar=hellogeode-0.0.1-SNAPSHOT.jar Member | Un-Deployed JAR | Un-Deployed From JAR Location -------- | ----------------------------- | ----------------------------------------------------------------- server50 | hellogeode-0.0.1-SNAPSHOT.jar | /opt/apache-geode-1.2.1/server50/hellogeode-0.0.1-SNAPSHOT.v1.jar gfsh>deploy --jar=/tmp/t/hellogeode-0.0.1-SNAPSHOT.jar Member | Deployed JAR | Deployed JAR Location -------- | ----------------------------- | ----------------------------------------------------------------- server50 | hellogeode-0.0.1-SNAPSHOT.jar | /opt/apache-geode-1.2.1/server50/hellogeode-0.0.1-SNAPSHOT.v1.jar
5.測試
測試程序在eclipse裏運行即可，不需要放到服務器上運行
在eclipse運行app.java
測試結果
開始創建用戶
[info 2017/09/27 13:09:13.422 CST <poolTimer-DEFAULT-2> tid=0x17] AutoConnectionSource discovered new locators [slave1/211.98.71.195:10334]
[info 2017/09/27 13:09:13.511 CST <main> tid=0x1] Updating membership port. Port changed from 0 to 51,084. ID is now bogon(92040:loner):0:0c29bdc1
User信息：{"age":12,"createTime":1506488953578,"id":102,"name":"username:102"}
User信息：{"age":15,"createTime":1506488953592,"id":105,"name":"username:105"}
User信息：{"age":14,"createTime":1506488953588,"id":104,"name":"username:104"}
User信息：{"age":10,"createTime":1506488953405,"id":100,"name":"username:100"}
User信息：{"age":19,"createTime":1506488953611,"id":109,"name":"username:109"}
User信息：{"age":13,"createTime":1506488953583,"id":103,"name":"username:103"}
User信息：{"age":18,"createTime":1506488953606,"id":108,"name":"username:108"}
User信息：{"age":11,"createTime":1506488953573,"id":101,"name":"username:101"}
User信息：{"age":16,"createTime":1506488953597,"id":106,"name":"username:106"}
User信息：{"age":17,"createTime":1506488953602,"id":107,"name":"username:107"}
User108信息{"age":18,"createTime":1506488953606,"id":108,"name":"username:108"}
完成創建用戶
開始修改用戶
User108信息{"age":18,"createTime":1506488953606,"id":108,"name":"username:108"}
User信息：{"age":17,"createTime":1506488953602,"id":107,"name":"username:107"}
User信息：{"age":12,"createTime":1506488953578,"id":102,"name":"username:102"}
User信息：{"age":15,"createTime":1506488953592,"id":105,"name":"username:105"}
User信息：{"age":12,"createTime":1506488953606,"id":108,"name":"username:108"}
User信息：{"age":13,"createTime":1506488953583,"id":103,"name":"username:103"}
User信息：{"age":19,"createTime":1506488953611,"id":109,"name":"username:109"}
User信息：{"age":16,"createTime":1506488953597,"id":106,"name":"username:106"}
User信息：{"age":11,"createTime":1506488953573,"id":101,"name":"username:101"}
User信息：{"age":14,"createTime":1506488953588,"id":104,"name":"username:104"}
User信息：{"age":10,"createTime":1506488953405,"id":100,"name":"username:100"}
User108信息{"age":12,"createTime":1506488953606,"id":108,"name":"username:108"}
完成修改用戶
開始刪除用戶
User信息：{"age":15,"createTime":1506488953592,"id":105,"name":"username:105"}
User信息：{"age":12,"createTime":1506488953578,"id":102,"name":"username:102"}
User信息：{"age":16,"createTime":1506488953597,"id":106,"name":"username:106"}
User信息：{"age":10,"createTime":1506488953405,"id":100,"name":"username:100"}
User信息：{"age":13,"createTime":1506488953583,"id":103,"name":"username:103"}
User信息：{"age":19,"createTime":1506488953611,"id":109,"name":"username:109"}
User信息：{"age":11,"createTime":1506488953573,"id":101,"name":"username:101"}
User信息：{"age":17,"createTime":1506488953602,"id":107,"name":"username:107"}
User信息：{"age":14,"createTime":1506488953588,"id":104,"name":"username:104"}
完成刪除用戶
開始清空表
完成清空表本文出自 “一方有” 博客，請務必保留此出處http://yifangyou.blog.51cto.com/900206/1969114
用java連接apache geode