JSP / JAVA 개발 환경의 설정은 정말이지 너무 힘들어!
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1. JAVA Standalone development environment
-------------------------------------------
1) JDK Version : JDK 1.5.0_06 ( JAVA Software Development Kit )
2) JRE Version : JRE 1.5.0_06 ( JAVA RunTime )
3) Database Server & version : MySQL 5.0.18
4) Purpose : Using Connection Pool with Jakarta DBCP API for MySQL database server
5) Test Program
가. Database Connection POOL Configuration file.
<object class="org.apache.commons.dbcp.PoolableConnectionFactory"
xmlns="http://apache.org/xml/xmlns/jakarta/commons/jocl">
<object class="org.apache.commons.dbcp.DriverManagerConnectionFactory">
<string value="jdbc:mysql://localhost:3306/DatabaseName?
useUnicode=true&characterEncoding=euc_kr" />
<string value="UserName" />
<string value="Password" />
</object>
<object class="org.apache.commons.pool.impl.GenericObjectPool">
<object class="org.apache.commons.pool.PoolableObjectFactory" null="true" />
<int value="10" />
<byte value="1" />
<long value="10000" />
<int value="10" />
<int value="3" />
<boolean value="true" />
<boolean value="true" />
<long value="600000" />
<int value="5" />
<long value="3600000" />
<boolean value="true" />
</object>
<object class="org.apache.commons.pool.KeyedObjectPoolFactory" null="true" />
<string null="true" />
<boolean value="false" />
<boolean value="true" />
</object>
나. Java Source Program
package info.tobe4u.Test;
import java.sql.DriverManager;
import java.sql.Connection;
import java.sql.Statement;
import java.sql.ResultSet;
import java.sql.SQLException;
public class JOCLPoolingDriverExample
{
public static void main(String[] args)
{
System.out.println("인수 0 = " + args[0]);
System.out.println("인수 1 = " + args[1]);
System.out.println("--------- OK ---------------");
Connection conn = null;
Statement stmt = null;
ResultSet rset = null;
try
{
System.out.println("Creating connection.");
conn = DriverManager.getConnection(args[0]);
System.out.println("--------- OK ---------------");
System.out.println("Creating statement.");
stmt = conn.createStatement();
System.out.println("--------- OK ---------------");
System.out.println("Executing statement.");
rset = stmt.executeQuery(args[1]);
System.out.println("--------- OK ---------------");
System.out.println("Results:");
int numcols = rset.getMetaData().getColumnCount();
while(rset.next())
{
for(int i=1;i<=numcols;i++)
{
System.out.print("\t" + rset.getString(i));
}
System.out.println("");
}
}
catch(SQLException e)
{
e.printStackTrace();
}
finally
{
try { rset.close(); } catch(Exception e) { }
try { stmt.close(); } catch(Exception e) { }
try { conn.close(); } catch(Exception e) { }
}
}
}
6. Compile Option :
javac -cp ../../classes -d ../../classes $(FileName)
7. Runtime Option :
java -classpath ../../classes
-Djdbc.drivers=com.mysql.jdbc.Driver:org.apache.commons.dbcp.PoolingDriver
info.tobe4u.Test.$(FileNameNoExt)
"jdbc:apache:commons:dbcp:/FarmCitrus"
"SELECT * FROM Member"
8. Generation Exception
가. Java.sql.SQLException : No suitable Driver
가) JDBC Driver for MySQL(Connector/J : com.mysql.jdbc.Driver) is not installed.
- Download mysql-connector-java-3.1.12.zip file at
http://www.mysql.com/products/connector/j/ or
Direct Download ( Click hear! )
- Extract mysql-connector-java-3.1.12-bin.jar file to $${JAVA_HOME}/jre/lib/ext
directoy or ${JRE_HOME}/lib/ext directory.
나) Jakarta DBCP Library is not installed
- Download commons-dbcp-1.2.1.zip file at
http://ftp.apache-kr.org/jakarta/commons/dbcp/binaries/commons-dbcp-1.2.1.zip
- Download commons-pool-1.2.zip file at
http://ftp.apache-kr.org/jakarta/commons/pool/binaries/commons-pool-1.2.zip
- Download commons-collections-3.1.zip file at
http://ftp.apache-kr.org/jakarta/commons/collections/binaries/commons-collections-3.1.zip
- Extract commons-dbcp-1.2.1.jar, commons-pool-1.2.jar, commons-collections-3.1.jar file
from each downloded .zip file, and put them to ${JRE_HOME}/lib/ext dir. or
${JAVA_HOME}/jre/lib/ext directory.
나. Java.sql.SQLException : Configuration file not found
- Configuration file of Database Connection Pool is not located proper classpath or not prepared.
- if Configuration file is not prepared yet, Write the configuration file and put to proper location.
case of me, put the file to ${JRE_HOME}/classes.
if the directory not appear on ${JRE_HOME}, just make the directory(classes) and put it there.
다. java.sql.SQLException: You have an error in your SQL syntax; check the manual that
corresponds to your MySQL server version for the right syntax to use near '&'?6;
4E46G8E2F8G2E8FH?GF??!(??' at line 1
- [Configuration.jocl(in this case, FarmCitrus.jocl)] file is not appropriate.
- refer to next statement.
가) inappropriate example
.
.
<object class="org.apache.commons.dbcp.DriverManagerConnectionFactory">
<string value="jdbc:mysql://localhost:3306/DatabaseName?
useUnicode=true&characterEncoding=euc-kr" />
<string value="UserName" />
<string value="Password" />
</object>
.
.
나) appropriate example
.
.
<object class="org.apache.commons.dbcp.DriverManagerConnectionFactory">
<string value="jdbc:mysql://localhost:3306/DatabaseName?
useUnicode=true&characterEncoding=euc_kr" />
<string value="UserName" />
<string value="Password" />
</object>
.
.
라. java.sql.SQLException : could not parse configuration file
- the XML parser that included in JDK or JRE is not appropriate. you must change/alternate/
replace the associated XML parser.
in my case, refer next lines.
- Download Xerces-J-bin.2.8.0.zip file at
http://www.apache.org/dist/xml/xerces-j/Xerces-J-bin.2.8.0.zip
- Extract resolver.jar, xercesImpl.jar, xml-apis.jar file to ${JAVA_HOR}/jre/lib/ext directory or
${JRE_HOME}/lib/ext directory.