用java连接apache geode
昨天研究了半天apache geode，通过gfsh命令查询和操作比较简单，但是如何通过程序查询因为资历太少，没有搞懂，试验了半天才明白1.创建测试region
create region --name=user --type=REPLICATE_PERSISTENT
2.用eclipse创建maven工程
修改pom.xml,需要引入gemfire-8.2.0.jar,这个在
4.0.0
io.proinsight
hellogeode
0.0.1-SNAPSHOT
jar
hellogeode
http://maven.apache.org
UTF-8
org.apache.geode
geode-core
1.2.0
org.apache.geode
geode-json
1.2.0
org.apache.geode
geode-common
1.2.0
log4j
log4j
1.2.17
org.apache.logging.log4j
log4j-core
2.8.2
org.apache.logging.log4j
log4j-api
2.8.2
log4j
log4j
1.2.17
commons-codec
commons-codec
1.10
org.apache.commons
commons-lang3
3.4
junit
junit
4.12
com.alibaba
fastjson
1.2.13
org.apache.maven.plugins
maven-compiler-plugin
3.3
1.8
1.8
org.apache.maven.plugins
maven-jar-plugin
2.6
true
lib/
io.proinsight.hellogeode.App
org.apache.maven.plugins
maven-dependency-plugin
2.10
copy-dependencies
package
copy-dependencies
${project.build.directory}/lib
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{
/**
* 必须有这个方法，否则查询会报没有init()这个方法
* */
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;
/**
* 年龄
* */
private int age;
/**
* 姓名
* */
private String name;
/**
* 创建时间
* */
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);
//打开user表
region = rf.create(regionName);
System.out.println("开始创建用户");
create(region);
select(region);
System.out.println("完成创建用户");
System.out.println("开始修改用户");
update(region);
select(region);
System.out.println("完成修改用户");
System.out.println("开始删除用户");
delete(region,108);
select(region);
System.out.println("完成删除用户");
System.out.println("开始清空表");
truncate(region);
select(region);
System.out.println("完成清空表");
//关闭表
region.close();
}
/**
* 查询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个
* */
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));
//修改年龄为
user108.setAge(12);
region.put(user108.getId(), user108);
}
}
/**
* 删除某个用户
* */
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目录下有对应的jar包
然后把hellogeode-0.0.1-SNAPSHOT.jar拷贝到geode服务器上某个目录例如/tmp/t/下
4.发布Jar到geode里
为啥要发布到geode里呢？因为我们用UserBean的序列化和反序列化作为表结构，因此deode查询时需要UserBean.class，因此我们发布hellogeode-0.0.1-SNAPSHOT.jar到geode，主要是为了把UserBean.class导入到geode里；
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 若是我们对UserBean有修改的话，需要先卸载jar,然后再重新发布
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.测试
测试程序在eclipse里运行即可，不需要放到服务器上运行
在eclipse运行app.java
测试结果
开始创建用户
AutoConnectionSource discovered new locators
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"}
完成创建用户
开始修改用户
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"}
完成修改用户
开始删除用户
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"}
完成删除用户
开始清空表
完成清空表
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