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CouchDB客户端开发—Java版
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在Fedora上安装CouchDB:
yum update
yum install couchdb
修改/etc/couchdb下local.ini文件:
port = 5984
bind_address = 0.0.0.0
启动couchdb:
/etc/init.d/couchdb start
重启couchdb:
/etc/init.d/couchdb restart
关闭couchdb:
/etc/init.d/couchdb stop
开机自动启动:
chkconfig couchdb on
其他资料:
Fedora: http://library.linode.com/databases/couchdb/fedora-14
Ubuntu: http://www.oschina.net/question/5189_7729
使用Java访问CouchDB:
Jar包:
/CouchDB/commons-io-2.1.jar
/CouchDB/commons-logging-1.1.1.jar
/CouchDB/httpclient-4.1.2.jar
/CouchDB/httpclient-cache-4.1.2.jar
/CouchDB/httpcore-4.1.2.jar
/CouchDB/jackson-core-asl-1.9.4.jar
/CouchDB/jackson-mapper-asl-1.9.4.jar
/CouchDB/org.ektorp-1.2.2.jar
/CouchDB/slf4j-api-1.6.1.jar
/CouchDB/spring-2.5.6.jar
测试代码:
package com.couchdb; import java.net.MalformedURLException; import org.ektorp.CouchDbConnector; import org.ektorp.CouchDbInstance; import org.ektorp.http.HttpClient; import org.ektorp.http.StdHttpClient; import org.ektorp.impl.StdCouchDbConnector; import org.ektorp.impl.StdCouchDbInstance; public class CouchDBTest { public static void main(String[] args) throws MalformedURLException { HttpClient httpClient = new StdHttpClient.Builder().url("http://192.168.11.124:5984").build(); CouchDbInstance dbInstance = new StdCouchDbInstance(httpClient); CouchDbConnector db = new StdCouchDbConnector("mydatabase", dbInstance); db.createDatabaseIfNotExists(); Sofa sofa = db.get(Sofa.class, "id_1"); if(sofa != null) db.delete(sofa); sofa = new Sofa(); sofa.setId("id_1"); sofa.setColor("red"); db.create(sofa); Sofa tmpSofa = db.get(Sofa.class, "id_1"); System.out.println(tmpSofa.getRevision() + " : " + tmpSofa.getColor()); tmpSofa.setColor("blue"); db.update(tmpSofa); tmpSofa = db.get(Sofa.class, "id_1"); System.out.println(tmpSofa.getRevision() + " : " + tmpSofa.getColor()); } }
整理后编写如下:
@Configuration public class CouchDBTemplate { @Value("${fabric.couchdb.host}") private String couchDBHost; @Value("${fabric.couchdb.database}") private String databaseName; public CouchDbConnector getCouchDbConnector() throws MalformedURLException { HttpClient httpClient = new StdHttpClient.Builder().url(couchDBHost).build(); CouchDbInstance dbInstance = new StdCouchDbInstance(httpClient); CouchDbConnector db = new StdCouchDbConnector(databaseName, dbInstance); db.createDatabaseIfNotExists(); return db; } }
@Service public class CouchDBServiceImpl implements CouchDBService { @Autowired private CouchDBTemplate couchDBTemplate; @Override public void test() throws MalformedURLException { CouchDbConnector db = couchDBTemplate.getCouchDbConnector(); Sofa sofa = db.get(Sofa.class, "0x789456123"); System.out.println(JSONObject.toJSON(sofa)); } @Override public Long getEvidenceSum() throws MalformedURLException { CouchDbConnector db = couchDBTemplate.getCouchDbConnector(); Long cc =db.getDbInfo().getDocCount(); return cc; } }
public class Sofa { @JsonProperty(value = "_id") private String id; @JsonProperty(value = "_rev") private String rev; private String address; private String createTime; private String hash; private String name; private String recordNumber; private String source; private String user; @JsonProperty(value = "~version") private String version; public String getId() { return id; } public void setId(String id) { this.id = id; } public String getRev() { return rev; } public void setRev(String rev) { this.rev = rev; } public String getAddress() { return address; } public void setAddress(String address) { this.address = address; } public String getCreateTime() { return createTime; } public void setCreateTime(String createTime) { this.createTime = createTime; } public String getHash() { return hash; } public void setHash(String hash) { this.hash = hash; } public String getName() { return name; } public void setName(String name) { this.name = name; } public String getRecordNumber() { return recordNumber; } public void setRecordNumber(String recordNumber) { this.recordNumber = recordNumber; } public String getSource() { return source; } public void setSource(String source) { this.source = source; } public String getUser() { return user; } public void setUser(String user) { this.user = user; } public String getVersion() { return version; } public void setVersion(String version) { this.version = version; } }
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