Hi,
I am using iBatis for the first time ,but no success yet.This is how my
setup looks like
DB SCHEMA:
CREATE TABLE TEST_USERPROFILE
( NAME VARCHAR2(20),
ID NUMBER
) ;
iBatis configuration.xml
<configuration>
<properties
resource="com/pg/ibatis/config/config.properties"></properties>
<typeAliases>
<typeAlias type="com.pg.beans.UserProfile" alias="UserProfile"/>
</typeAliases>
<environments default="development">
<environment id="development">
<transactionManager type="JDBC" />
<dataSource type="POOLED">
<property name="driver" value="${driver}" />
<property name="url" value="${url}" />
<property name="username" value="${username}" />
<property name="password" value="${password}" />
</dataSource>
</environment>
</environments>
<mappers>
<mapper
resource="com/pg/ibatis/config/UserProfileMapper.xml" />
</mappers>
</configuration>
UserProfileMapper.xml
<mapper namespace="com.pg.mappers.UserProfileMapper">
<select id="selectUserProfile" parameterType="int"
resultType="UserProfile">
SELECT * FROM TEST_USERPROFILE WHERE id=#{id}
</select>
</mapper>
UserProfileMapper.java
public interface UserProfileMapper {
UserProfile selectUserProfile(int id);
}
UserProfile.java
public class UserProfile {
String name;
int id;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
}
Main method
String resource = "com/pg/ibatis/config/Configuration.xml";
Reader reader = Resources.getResourceAsReader(resource);
SqlSessionFactory factory = new SqlSessionFactoryBuilder()
.build(reader);
SqlSession session = factory.openSession();
try {
UserProfileMapper mapper =
session.getMapper(UserProfileMapper.class);
UserProfile profile = mapper.selectUserProfile(1);
System.out.println("PROFILE " + profile);
System.out.println(profile.getName());
} finally {
session.close();
}
But i am getting NPE
PROFILE null
Exception in thread "main" java.lang.NullPointerException
at Main.main(Main.java:23)
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