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POAutowired object return null
 

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    <blockquote> <p><strong>Possible Duplicate:</strong><br> <a href="https://stackoverflow.com/questions/4184159/spring-autowired-in-servlet">Spring @Autowired in Servlet</a><br> <a href="https://stackoverflow.com/questions/13461809/configurating-spring-ioc-with-servlets">Configurating Spring Ioc with Servlets</a> </p> </blockquote> <p>I would like to inject the dao into servlet but it return as null. </p> <p>applicationContext.xml</p> <pre><code>&lt;beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context" xmlns:tx="http://www.springframework.org/schema/tx" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-2.5.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd"&gt; &lt;!-- Enable @Required @Autowired @PreDestroy @PostConstruct @Resource --&gt; &lt;context:annotation-config /&gt; &lt;!-- Scan class file in class path for annotated component -&gt; @Component, @Repository, @Service, and @Controller --&gt; &lt;context:component-scan base-package="com.breeze.bis.core.service.jdbcTemplate" /&gt; &lt;!-- Enable load time weaving for @Configurable --&gt; &lt;context:load-time-weaver aspectj-weaving="autodetect" /&gt; &lt;!-- --&gt; &lt;tx:annotation-driven proxy-target-class="false" transaction-manager="transactionManager"/&gt; &lt;!-- ==================================================================================================== --&gt; &lt;!-- Alternate method to enable @Autowired --&gt; &lt;bean class="org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor"/&gt; &lt;bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource" destroy-method="close"&gt; &lt;property name="jdbcUrl" value="jdbc:mysql://localhost:3306/vbossdb" /&gt; &lt;property name="driverClass" value="com.mysql.jdbc.Driver" /&gt; &lt;property name="user" value="root" /&gt; &lt;property name="password" value="root" /&gt; &lt;/bean&gt; &lt;bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate"&gt; &lt;constructor-arg type="javax.sql.DataSource" ref="dataSource"&gt;&lt;/constructor-arg&gt; &lt;/bean&gt; &lt;bean id="genericDaoImpl" class="com.breeze.bis.core.service.jdbcTemplate.GenericDAOImpl"&gt; &lt;property name="jdbcDao" ref="jdbcTemplate"&gt;&lt;/property&gt; &lt;/bean&gt; &lt;bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"&gt; &lt;property name="dataSource" ref="dataSource"&gt;&lt;/property&gt; &lt;/bean&gt; &lt;/beans&gt; </code></pre> <p>web.xml</p> <pre><code>&lt;?xml version="1.0" encoding="UTF-8"?&gt; &lt;web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5"&gt; &lt;display-name&gt;BISDAO&lt;/display-name&gt; &lt;context-param&gt; &lt;param-name&gt;contextConfigLocation&lt;/param-name&gt; &lt;param-value&gt;WEB-INF/applicationContext.xml&lt;/param-value&gt; &lt;/context-param&gt; &lt;listener&gt; &lt;display-name&gt;contextLoaderListener&lt;/display-name&gt; &lt;listener-class&gt;org.springframework.web.context.ContextLoaderListener&lt;/listener-class&gt; &lt;/listener&gt; &lt;/webapp&gt; </code></pre> <p>DAO.java</p> <pre><code>@Component @Transactional(propagation=Propagation.REQUIRED, isolation=Isolation.DEFAULT, rollbackFor={Exception.class, SQLException.class}, timeout=9999) public class GenericDAOImpl implements GenericDAO { private JdbcTemplate jdbcDao; /** * */ public GenericDAOImpl() { } /** * @return the jdbcDao */ public JdbcTemplate getJdbcDao() { return jdbcDao; } /** * @param jdbcDao the jdbcDao to set */ public void setJdbcDao(JdbcTemplate jdbcDao) { this.jdbcDao = jdbcDao; } /* (non-Javadoc) * @see com.breeze.bis.core.service.jdbcTemplate.GenericDAO#createObject(java.lang.String, java.lang.Object) */ @Override @SuppressWarnings("unchecked") public int createObject(String sql, Map&lt;Integer, Object&gt; paramMap) { boolean hasResult = true, hasKey = true; IStatementExecutor stmtExecutor = new UpdateStatementExecutor(hasKey); IExtractor integerExtr = new IntegerExtractor(null, hasResult); GenericDatabaseExecutor executor = new GenericDatabaseExecutor(stmtExecutor, integerExtr); GenericPreparedStatementCreator stmtCreator = new GenericPreparedStatementCreator(hasKey, sql, paramMap); GenericPreparedStatementCallback stmtCallback = new GenericPreparedStatementCallback(executor); return (Integer) this.jdbcDao.execute(stmtCreator, stmtCallback); } } </code></pre> <p>Servlet.java</p> <pre><code>@Configurable public class GenericServlet extends HttpServlet { private static final long serialVersionUID = 1L; @Autowired GenericDAO dao; } </code></pre> <p>Please help. </p> <p>Thanks. </p>
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    3. COI think the reason no one has answered is because it has already been answered [here](http://stackoverflow.com/questions/4184159/spring-autowired-in-servlet) and [here](http://stackoverflow.com/questions/13461809/configurating-spring-ioc-with-servlets) as noted above.
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