我想将一些属性存储在数据库表中。我正在使用Apache Commons Configuration 2.1。我发现this,但我不能让它工作...使用Commons配置在数据库中存储属性
我已经搜索了,但我没有找到任何文档或示例,但我已经写上面的链接。
(编辑:代码现在固定)
这是数据库结构(PostgreSQL的):
-- Table: public.propcalendars
-- DROP TABLE public.propcalendars;
CREATE TABLE public.propcalendars
(
name character varying NOT NULL,
key character varying NOT NULL,
value character varying,
CONSTRAINT pk PRIMARY KEY (name, key)
)
WITH (
OIDS=FALSE
);
ALTER TABLE public.propcalendars
OWNER TO postgres;
,后面的数据存储:
name key value
diasemana SV2 0000010
fechafinal SV2 31/08
fechainicial SV2 01/07
这是我的代码:
public class PropertiesConfiguration {
/*
* Atributos
*/
private static PropertiesConfiguration INSTANCE = null;
private DatabaseConfiguration configFechaInicioAnual;
private DatabaseConfiguration configFechaFinAnual;
private DatabaseConfiguration configDiasSemana;
/*
* Métodos
*/
private PropertiesConfiguration() throws ConfigurationException {
configure();
}
private void configure() throws ConfigurationException {
PGSimpleDataSource postgres = new PGSimpleDataSource();
postgres.setServerName("ip");
postgres.setDatabaseName("database");
postgres.setPortNumber(5433);
postgres.setUser("user");
postgres.setPassword("***");
postgres.setCurrentSchema("public");
BasicConfigurationBuilder<DatabaseConfiguration> builder = new BasicConfigurationBuilder<DatabaseConfiguration>(DatabaseConfiguration.class);
builder.configure(
new Parameters()
.database()
.setDataSource(postgres)
.setTable("propcalendars")
.setKeyColumn("key")
.setValueColumn("value")
.setConfigurationNameColumn("name")
.setConfigurationName("fechainicial")
);
configFechaInicioAnual = new DatabaseConfiguration();
configFechaInicioAnual.setDataSource(postgres);
configFechaInicioAnual.setKeyColumn("key");
configFechaInicioAnual.setValueColumn("value");
configFechaInicioAnual.setConfigurationName("fechainicial");
}
public static PropertiesConfiguration getInstance() throws ConfigurationException{
if(INSTANCE == null){
INSTANCE = new PropertiesConfiguration();
}
return INSTANCE;
}
public DatosCalendario getInfoCalendario(String pClaveCalendario, String pInfoCalendario){
DatosCalendario dc = new DatosCalendario();
dc.descripcion = pInfoCalendario;
dc.inicio = configFechaInicioAnual.getString(pClaveCalendario);
dc.fin = "";//configFechaInicioAnual.getString(pClaveCalendario);
dc.diasSemana = 1;//configFechaInicioAnual.getInt(pClaveCalendario);
return dc;
}
public class DatosCalendario{
public String descripcion;
public String inicio;
public String fin;
public Integer diasSemana;
@Override
public String toString(){
return " DatosCalendario [ descripcion=" + descripcion + ", inicio=" + inicio + ", fin=" + fin + ", diasSemana=" + diasSemana + "]";
}
}
}
这是用'fechainicial'获得'SV2'时引发的异常:
java.sql.SQLSyntaxErrorException:您的SQL语法错误;检查与您的MySQL服务器版本相对应的手册,以便在第1行 处的'null WHERE key ='SV2'附近在com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:686 )〜[mysql-connector-java-6.0.3.jar:6.0.3] at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:663)〜[mysql-connector-java-6.0 .jar:6.0.3] at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:653)〜[mysql-connector-java-6.0.3.jar:6.0.3] at com.mysql.cj.jdbc.ConnectionImpl com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:115)〜[mysql-connector-java-6.0.3.jar:6.0.3] .execSQL(ConnectionImpl.java:2041)〜[mysql-connector-java-6.0.3.jar:6.0.3] at com.mysql.cj.jdbc.PreparedStatement.executeInternal(Prepare dStatement.java:1827)〜[mysql-connector-java-6.0.3.jar:6.0.3] at com.mysql.cj.jdbc.PreparedStatement.executeQuery(PreparedStatement.java:1930)〜[mysql-connector- java-6.0.3.jar:6.0.3] at org.apache.commons.configuration2.DatabaseConfiguration $ JdbcOperation.openResultSet(DatabaseConfiguration.java:847)〜[commons-configuration2-2.1.jar:2.1] at org。 apache.commons.configuration2.DatabaseConfiguration $ 1.performOperation(DatabaseConfiguration.java:333)〜[commons-configuration2-2.1.jar:2.1] at org.apache.commons.configuration2.DatabaseConfiguration $ JdbcOperation.execute(DatabaseConfiguration.java:742 )[commons-configuration2-2.1.jar:2.1] at org.apache.commons.configuration2.DatabaseConfiguration.getPropertyInternal(DatabaseConfiguration.java:359)[commons-configuration2-2.1.jar:2.1] at org.apache.co mmons.configuration2.AbstractConfiguration.getProperty(AbstractConfiguration.java:992)[commons-configuration2-2.1.jar:2.1] at org.apache.commons.configuration2.AbstractConfiguration.getAndConvertProperty(AbstractConfiguration.java:1749)[commons-configuration2- 2.1.jar:2.1] at org.apache.commons.configuration2.AbstractConfiguration.convert(AbstractConfiguration.java:1785)[commons-configuration2-2.1.jar:2.1] at org.apache.commons.configuration2.AbstractConfiguration.getString (AbstractConfiguration.java:1344)[commons-configuration2-2.1.jar:2.1] at com.ingartek.gtfs.bizkaibus.configuration.PropertiesConfiguration.getInfoCalendario(PropertiesConfiguration.java:83)[classes /:?] at com。 ingartek.gtfs.bizkaibus.main.GenerarGtfs.main(GenerarGtfs.java:43)[classes /:?] 13:55:15.120 [main] DEBUG com.in gartek.gtfs.bizkaibus.main。GenerarGtfs - DatosCalendario [descripcion = Sabados Verano的胡里奥·阿冈斯托,INICIO = NULL,FIN =,diasSemana = 1]
我在做什么错?有人可以提供额外的教程或文档吗?
SOLUTION
由于@Thilo告诉我,该解决方案是使用一个表名不含有 “连字符”( “ - ”)。不幸的是,它只能在PostgreSQL和MySQL中工作我收到一个异常:
java.sql.SQLSyntaxErrorException:您的SQL语法错误;检查对应于你的MySQL服务器版本的手册正确的语法在1号线
尝试使用不带连字符的表格名称。 – Thilo
我现在试试 – russellhoff
是啊!它的工作,也使用postgresql。谢了哥们! – russellhoff