diff --git a/src/main/java/com/monkeyk/sos/config/ContextConfigurer.java b/src/main/java/com/monkeyk/sos/config/ContextConfigurer.java
new file mode 100644
index 0000000..35ff483
--- /dev/null
+++ b/src/main/java/com/monkeyk/sos/config/ContextConfigurer.java
@@ -0,0 +1,82 @@
+package com.monkeyk.sos.config;
+
+import org.apache.commons.dbcp.BasicDataSource;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.PropertySource;
+import org.springframework.context.support.PropertySourcesPlaceholderConfigurer;
+import org.springframework.jdbc.core.JdbcTemplate;
+import org.springframework.jdbc.datasource.DataSourceTransactionManager;
+import org.springframework.transaction.PlatformTransactionManager;
+import org.springframework.transaction.annotation.EnableTransactionManagement;
+
+import javax.sql.DataSource;
+
+/**
+ * 2016/4/4
+ * <p/>
+ * Replace context.xml, transaction.xml
+ *
+ * @author Shengzhao Li
+ */
+@Configuration
+@ComponentScan(basePackages = "com.monkeyk.sos")
+@PropertySource(value = {"classpath:spring-oauth-server.properties"})
+@EnableTransactionManagement()
+public class ContextConfigurer {
+
+
+    @Bean
+    public static PropertySourcesPlaceholderConfigurer propertySourcesPlaceholderConfigurer() {
+        return new PropertySourcesPlaceholderConfigurer();
+    }
+
+
+    @Value("${jdbc.driverClassName}")
+    private String driverClassName;
+
+    @Value("${jdbc.url}")
+    private String jdbcUrl;
+
+    @Value("${jdbc.username}")
+    private String jdbcUsername;
+
+    @Value("${jdbc.password}")
+    private String jdbcPassword;
+
+    @Bean(name = "dataSource")
+    public DataSource dataSource() {
+        BasicDataSource dataSource = new BasicDataSource();
+        dataSource.setDriverClassName(driverClassName);
+        dataSource.setUrl(jdbcUrl);
+        dataSource.setUsername(jdbcUsername);
+        dataSource.setPassword(jdbcPassword);
+
+        dataSource.setValidationQuery("SELECT 1");
+        dataSource.setTestOnReturn(false);
+        dataSource.setTestOnBorrow(true);
+
+        dataSource.setMaxActive(20);
+        dataSource.setMaxIdle(5);
+
+        return dataSource;
+    }
+
+
+    @Bean(name = "transactionManager")
+    public PlatformTransactionManager transactionManager(DataSource dataSource) {
+        DataSourceTransactionManager transactionManager = new DataSourceTransactionManager();
+        transactionManager.setDataSource(dataSource);
+        return transactionManager;
+    }
+
+
+    @Bean(name = "jdbcTemplate")
+    public JdbcTemplate jdbcTemplate(DataSource dataSource) {
+        return new JdbcTemplate(dataSource);
+    }
+
+
+}
diff --git a/src/main/java/com/monkeyk/sos/config/ServletInitializer.java b/src/main/java/com/monkeyk/sos/config/ServletInitializer.java
index 52227e0..42619c8 100644
--- a/src/main/java/com/monkeyk/sos/config/ServletInitializer.java
+++ b/src/main/java/com/monkeyk/sos/config/ServletInitializer.java
@@ -23,7 +23,7 @@ public class ServletInitializer extends AbstractAnnotationConfigDispatcherServle
 
     @Override
     protected Class<?>[] getRootConfigClasses() {
-        return new Class[]{WebSecurityConfigurer.class};
+        return new Class[]{ContextConfigurer.class, WebSecurityConfigurer.class};
     }
 
     @Override
diff --git a/src/main/java/com/monkeyk/sos/config/WebSecurityConfigurer.java b/src/main/java/com/monkeyk/sos/config/WebSecurityConfigurer.java
index 122f350..f8fafce 100644
--- a/src/main/java/com/monkeyk/sos/config/WebSecurityConfigurer.java
+++ b/src/main/java/com/monkeyk/sos/config/WebSecurityConfigurer.java
@@ -1,8 +1,12 @@
 package com.monkeyk.sos.config;
 
+import com.monkeyk.sos.service.UserService;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.security.authentication.AuthenticationManager;
+import org.springframework.security.authentication.encoding.Md5PasswordEncoder;
+import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
 import org.springframework.security.config.annotation.web.builders.HttpSecurity;
 import org.springframework.security.config.annotation.web.builders.WebSecurity;
 import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
@@ -21,6 +25,9 @@ import org.springframework.security.oauth2.provider.expression.OAuth2WebSecurity
 public class WebSecurityConfigurer extends WebSecurityConfigurerAdapter {
 
 
+    @Autowired
+    private UserService userService;
+
     @Override
     public void configure(WebSecurity web) throws Exception {
         web.expressionHandler(new OAuth2WebSecurityExpressionHandler());
@@ -28,7 +35,7 @@ public class WebSecurityConfigurer extends WebSecurityConfigurerAdapter {
     }
 
     @Override
-    @Bean
+    @Bean(name = "authenticationManager")
     public AuthenticationManager authenticationManagerBean() throws Exception {
         return super.authenticationManagerBean();
     }
@@ -57,4 +64,11 @@ public class WebSecurityConfigurer extends WebSecurityConfigurerAdapter {
 
     }
 
+
+    @Override
+    protected void configure(AuthenticationManagerBuilder auth) throws Exception {
+        auth.userDetailsService(userService)
+                .passwordEncoder(new Md5PasswordEncoder());
+    }
+
 }