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POSpring MVC datasource issue
 

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    <p>i'm trying to build a testing site by Spring 3.2 MVC, with tomcat 7 and mysql 5.1, using JPA to retrieve data. I've read various doc online as well as a book "Spring in Action" from Manning and seems many different approaches or configures can achieve, but this flexibility also is confusion to me. </p> <p>i'm not sure the following concept is correct, please spare some time to correct me</p> <hr> <p>error as below:</p> <pre><code>Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in ServletContext resource [/WEB-INF/spring/appServlet/servlet-context.xml]: Invocation of init method failed; nested exception is java.lang.reflect.UndeclaredThrowableException Caused by: java.lang.IllegalStateException: Must start with Java agent to use InstrumentationLoadTimeWeaver. See Spring documentation. </code></pre> <p>serlvet-context.xml snippet (truncated some headers for easy read)</p> <pre><code> &lt;annotation-driven /&gt; &lt;resources mapping="/resources/**" location="/resources/" /&gt; &lt;beans:bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"&gt; &lt;beans:property name="prefix" value="/WEB-INF/views/" /&gt; &lt;beans:property name="suffix" value=".jsp" /&gt; &lt;/beans:bean&gt; &lt;context:component-scan base-package="com.project.localdbtest" /&gt; &lt;beans:bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"&gt; &lt;beans:property name="driverClassName" value="com.mysql.jdbc.Driver" /&gt; &lt;beans:property name="url" value="jdbc:mysql://127.0.0.1:3306/bookdb" /&gt; &lt;beans:property name="username" value="root" /&gt; &lt;beans:property name="password" value="password" /&gt; &lt;beans:property name="initialSize" value="5" /&gt; &lt;beans:property name="maxActive" value="20" /&gt; &lt;/beans:bean&gt; &lt;beans:bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean"&gt; &lt;beans:property name="dataSource" ref="dataSource" /&gt; &lt;beans:property name="jpaVendorAdapter" ref="jpaVendorAdapter" /&gt; &lt;beans:property name="loadTimeWeaver"&gt; &lt;beans:bean class="org.springframework.instrument.classloading.InstrumentationLoadTimeWeaver" /&gt; &lt;/beans:property&gt; &lt;/beans:bean&gt; &lt;beans:bean class="org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor" /&gt; &lt;beans:bean class="org.springframework.dao.annotation.PersistenceExceptionTranslationPostProcessor" /&gt; &lt;beans:bean id="jpaVendorAdapter" class="org.springframework.orm.jpa.vendor.EclipseLinkJpaVendorAdapter"&gt; &lt;beans:property name="database" value="MYSQL" /&gt; &lt;beans:property name="showSql" value="true" /&gt; &lt;beans:property name="generateDdl" value="false" /&gt; &lt;/beans:bean&gt; &lt;tx:annotation-driven /&gt; &lt;beans:bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager"&gt; &lt;beans:property name="entityManagerFactory" ref="entityManagerFactory" /&gt; &lt;/beans:bean&gt; &lt;/beans:beans&gt; </code></pre> <p>POM.xml</p> <pre><code>&lt;?xml version="1.0" encoding="UTF-8"?&gt; &lt;project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd"&gt; &lt;modelVersion&gt;4.0.0&lt;/modelVersion&gt; &lt;groupId&gt;com.project&lt;/groupId&gt; &lt;artifactId&gt;localdbtest&lt;/artifactId&gt; &lt;name&gt;localDbTest&lt;/name&gt; &lt;packaging&gt;war&lt;/packaging&gt; &lt;version&gt;1.0.0-BUILD-SNAPSHOT&lt;/version&gt; &lt;properties&gt; &lt;java-version&gt;1.6&lt;/java-version&gt; &lt;org.springframework-version&gt;3.1.1.RELEASE&lt;/org.springframework-version&gt; &lt;org.aspectj-version&gt;1.6.10&lt;/org.aspectj-version&gt; &lt;org.slf4j-version&gt;1.6.6&lt;/org.slf4j-version&gt; &lt;/properties&gt; &lt;dependencies&gt; &lt;!-- Spring --&gt; &lt;dependency&gt; &lt;groupId&gt;org.springframework&lt;/groupId&gt; &lt;artifactId&gt;spring-context&lt;/artifactId&gt; &lt;version&gt;${org.springframework-version}&lt;/version&gt; &lt;exclusions&gt; &lt;!-- Exclude Commons Logging in favor of SLF4j --&gt; &lt;exclusion&gt; &lt;groupId&gt;commons-logging&lt;/groupId&gt; &lt;artifactId&gt;commons-logging&lt;/artifactId&gt; &lt;/exclusion&gt; &lt;/exclusions&gt; &lt;/dependency&gt; &lt;dependency&gt; &lt;groupId&gt;org.springframework&lt;/groupId&gt; &lt;artifactId&gt;spring-webmvc&lt;/artifactId&gt; &lt;version&gt;${org.springframework-version}&lt;/version&gt; &lt;/dependency&gt; &lt;!-- AspectJ --&gt; &lt;dependency&gt; &lt;groupId&gt;org.aspectj&lt;/groupId&gt; &lt;artifactId&gt;aspectjrt&lt;/artifactId&gt; &lt;version&gt;${org.aspectj-version}&lt;/version&gt; &lt;/dependency&gt; &lt;!-- Logging --&gt; &lt;dependency&gt; &lt;groupId&gt;org.slf4j&lt;/groupId&gt; &lt;artifactId&gt;slf4j-api&lt;/artifactId&gt; &lt;version&gt;${org.slf4j-version}&lt;/version&gt; &lt;/dependency&gt; &lt;dependency&gt; &lt;groupId&gt;org.slf4j&lt;/groupId&gt; &lt;artifactId&gt;jcl-over-slf4j&lt;/artifactId&gt; &lt;version&gt;${org.slf4j-version}&lt;/version&gt; &lt;scope&gt;runtime&lt;/scope&gt; &lt;/dependency&gt; &lt;dependency&gt; &lt;groupId&gt;org.slf4j&lt;/groupId&gt; &lt;artifactId&gt;slf4j-log4j12&lt;/artifactId&gt; &lt;version&gt;${org.slf4j-version}&lt;/version&gt; &lt;scope&gt;runtime&lt;/scope&gt; &lt;/dependency&gt; &lt;dependency&gt; &lt;groupId&gt;log4j&lt;/groupId&gt; &lt;artifactId&gt;log4j&lt;/artifactId&gt; &lt;version&gt;1.2.15&lt;/version&gt; &lt;exclusions&gt; &lt;exclusion&gt; &lt;groupId&gt;javax.mail&lt;/groupId&gt; &lt;artifactId&gt;mail&lt;/artifactId&gt; &lt;/exclusion&gt; &lt;exclusion&gt; &lt;groupId&gt;javax.jms&lt;/groupId&gt; &lt;artifactId&gt;jms&lt;/artifactId&gt; &lt;/exclusion&gt; &lt;exclusion&gt; &lt;groupId&gt;com.sun.jdmk&lt;/groupId&gt; &lt;artifactId&gt;jmxtools&lt;/artifactId&gt; &lt;/exclusion&gt; &lt;exclusion&gt; &lt;groupId&gt;com.sun.jmx&lt;/groupId&gt; &lt;artifactId&gt;jmxri&lt;/artifactId&gt; &lt;/exclusion&gt; &lt;/exclusions&gt; &lt;scope&gt;runtime&lt;/scope&gt; &lt;/dependency&gt; &lt;!-- @Inject --&gt; &lt;dependency&gt; &lt;groupId&gt;javax.inject&lt;/groupId&gt; &lt;artifactId&gt;javax.inject&lt;/artifactId&gt; &lt;version&gt;1&lt;/version&gt; &lt;/dependency&gt; &lt;!-- Servlet --&gt; &lt;dependency&gt; &lt;groupId&gt;javax.servlet&lt;/groupId&gt; &lt;artifactId&gt;servlet-api&lt;/artifactId&gt; &lt;version&gt;2.5&lt;/version&gt; &lt;scope&gt;provided&lt;/scope&gt; &lt;/dependency&gt; &lt;dependency&gt; &lt;groupId&gt;javax.servlet.jsp&lt;/groupId&gt; &lt;artifactId&gt;jsp-api&lt;/artifactId&gt; &lt;version&gt;2.1&lt;/version&gt; &lt;scope&gt;provided&lt;/scope&gt; &lt;/dependency&gt; &lt;dependency&gt; &lt;groupId&gt;javax.servlet&lt;/groupId&gt; &lt;artifactId&gt;jstl&lt;/artifactId&gt; &lt;version&gt;1.2&lt;/version&gt; &lt;/dependency&gt; &lt;!-- Test --&gt; &lt;dependency&gt; &lt;groupId&gt;junit&lt;/groupId&gt; &lt;artifactId&gt;junit&lt;/artifactId&gt; &lt;version&gt;4.7&lt;/version&gt; &lt;scope&gt;test&lt;/scope&gt; &lt;/dependency&gt; &lt;dependency&gt; &lt;groupId&gt;org.springframework&lt;/groupId&gt; &lt;artifactId&gt;spring-tx&lt;/artifactId&gt; &lt;version&gt;${org.springframework-version}&lt;/version&gt; &lt;/dependency&gt; &lt;dependency&gt; &lt;groupId&gt;org.springframework.data&lt;/groupId&gt; &lt;artifactId&gt;spring-data-commons&lt;/artifactId&gt; &lt;version&gt;1.5.1.RELEASE&lt;/version&gt; &lt;/dependency&gt; &lt;dependency&gt; &lt;groupId&gt;org.springframework.data&lt;/groupId&gt; &lt;artifactId&gt;spring-data-jpa&lt;/artifactId&gt; &lt;version&gt;1.3.2.RELEASE&lt;/version&gt; &lt;/dependency&gt; &lt;dependency&gt; &lt;groupId&gt;net.sourceforge.jtds&lt;/groupId&gt; &lt;artifactId&gt;jtds&lt;/artifactId&gt; &lt;version&gt;1.2.7&lt;/version&gt; &lt;/dependency&gt; &lt;dependency&gt; &lt;groupId&gt;org.springframework&lt;/groupId&gt; &lt;artifactId&gt;spring-test&lt;/artifactId&gt; &lt;version&gt;${org.springframework-version}&lt;/version&gt; &lt;/dependency&gt; &lt;dependency&gt; &lt;groupId&gt;commons-dbcp&lt;/groupId&gt; &lt;artifactId&gt;commons-dbcp&lt;/artifactId&gt; &lt;version&gt;1.4&lt;/version&gt; &lt;/dependency&gt; &lt;dependency&gt; &lt;groupId&gt;org.springframework&lt;/groupId&gt; &lt;artifactId&gt;spring-aop&lt;/artifactId&gt; &lt;version&gt;${org.springframework-version}&lt;/version&gt; &lt;/dependency&gt; &lt;/dependencies&gt; &lt;build&gt; &lt;plugins&gt; &lt;plugin&gt; &lt;artifactId&gt;maven-eclipse-plugin&lt;/artifactId&gt; &lt;version&gt;2.9&lt;/version&gt; &lt;configuration&gt; &lt;additionalProjectnatures&gt; &lt;projectnature&gt;org.springframework.ide.eclipse.core.springnature&lt;/projectnature&gt; &lt;/additionalProjectnatures&gt; &lt;additionalBuildcommands&gt; &lt;buildcommand&gt;org.springframework.ide.eclipse.core.springbuilder&lt;/buildcommand&gt; &lt;/additionalBuildcommands&gt; &lt;downloadSources&gt;true&lt;/downloadSources&gt; &lt;downloadJavadocs&gt;true&lt;/downloadJavadocs&gt; &lt;/configuration&gt; &lt;/plugin&gt; &lt;plugin&gt; &lt;groupId&gt;org.apache.maven.plugins&lt;/groupId&gt; &lt;artifactId&gt;maven-compiler-plugin&lt;/artifactId&gt; &lt;version&gt;2.5.1&lt;/version&gt; &lt;configuration&gt; &lt;source&gt;1.6&lt;/source&gt; &lt;target&gt;1.6&lt;/target&gt; &lt;compilerArgument&gt;-Xlint:all&lt;/compilerArgument&gt; &lt;showWarnings&gt;true&lt;/showWarnings&gt; &lt;showDeprecation&gt;true&lt;/showDeprecation&gt; &lt;/configuration&gt; &lt;/plugin&gt; &lt;plugin&gt; &lt;groupId&gt;org.codehaus.mojo&lt;/groupId&gt; &lt;artifactId&gt;exec-maven-plugin&lt;/artifactId&gt; &lt;version&gt;1.2.1&lt;/version&gt; &lt;configuration&gt; &lt;mainClass&gt;org.test.int1.Main&lt;/mainClass&gt; &lt;/configuration&gt; &lt;/plugin&gt; &lt;/plugins&gt; &lt;/build&gt; &lt;/project&gt; </code></pre> <p>BookDAOImpl.java snippet</p> <pre><code>@Repository public class BookDAOImpl implements BookDAO { @PersistenceContext private EntityManager em; public String getBook() { Query q = em.createNamedQuery("select title from book b where b.id = '1'"); String string = q.getResultList().toString(); return string; } } </code></pre> <p>BookServiceImpl.java snippet</p> <pre><code>@Transactional public class BookServiceImpl implements BookService { @Autowired BookDAO bookDAO; public String doGetBook() { String string = bookDAO.getBook(); return string; } } </code></pre> <p>HomeController.java snippet</p> <pre><code> @Controller public class HomeController { private BookService bookService; @Inject public HomeController(BookService bookService) { this.bookService = bookService; } @RequestMapping(value = "/book") public String book(Model model) { String book = bookService.doGetBook(); model.addAttribute("book", book); return "book"; } } </code></pre> <p>Please feel free to advise. As i have read different doc saying different approaches about Spring MVC, the above is what i understand about spring MVC which might be used in incorrect way, it might be very silly configuration issue. Thankyou.</p>
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