diff --git a/examples/quickstart/src/main/java/org/springside/examples/quickstart/entity/Task.java b/examples/quickstart/src/main/java/org/springside/examples/quickstart/entity/Task.java
index ee62e191..4a6217d4 100644
--- a/examples/quickstart/src/main/java/org/springside/examples/quickstart/entity/Task.java
+++ b/examples/quickstart/src/main/java/org/springside/examples/quickstart/entity/Task.java
@@ -4,6 +4,7 @@ import javax.persistence.Entity;
 import javax.persistence.JoinColumn;
 import javax.persistence.ManyToOne;
 import javax.persistence.Table;
+import javax.validation.constraints.NotNull;
 
 import org.hibernate.validator.constraints.NotBlank;
 
@@ -34,6 +35,7 @@ public class Task extends IdEntity {
 		this.description = description;
 	}
 
+	@NotNull
 	@ManyToOne
 	@JoinColumn(name = "USER_ID")
 	public User getUser() {
diff --git a/examples/quickstart/src/test/java/org/springside/examples/quickstart/service/account/AccountServiceTest.java b/examples/quickstart/src/test/java/org/springside/examples/quickstart/service/account/AccountServiceTest.java
index b67de0f5..cd745e80 100644
--- a/examples/quickstart/src/test/java/org/springside/examples/quickstart/service/account/AccountServiceTest.java
+++ b/examples/quickstart/src/test/java/org/springside/examples/quickstart/service/account/AccountServiceTest.java
@@ -30,7 +30,7 @@ public class AccountServiceTest {
 		accountService = new AccountService();
 		accountService.setUserDao(mockUserDao);
 
-		ShiroTestUtils.mockSubject(new ShiroUser(1L, "foo", "Foo"));
+		ShiroTestUtils.mockSubject(new ShiroUser(3L, "foo", "Foo"));
 	}
 
 	@Test
diff --git a/examples/showcase/src/main/java/org/springside/examples/showcase/entity/Team.java b/examples/showcase/src/main/java/org/springside/examples/showcase/entity/Team.java
index b845ada7..6d3ad77b 100644
--- a/examples/showcase/src/main/java/org/springside/examples/showcase/entity/Team.java
+++ b/examples/showcase/src/main/java/org/springside/examples/showcase/entity/Team.java
@@ -7,6 +7,7 @@ import javax.persistence.JoinColumn;
 import javax.persistence.OneToMany;
 import javax.persistence.OneToOne;
 import javax.persistence.Table;
+import javax.validation.constraints.NotNull;
 
 import org.hibernate.annotations.Cache;
 import org.hibernate.annotations.CacheConcurrencyStrategy;
@@ -14,7 +15,7 @@ import org.hibernate.annotations.CacheConcurrencyStrategy;
 import com.google.common.collect.Lists;
 
 /**
- * 团队.
+ * 开发团队.
  * 
  * @author calvin
  */
@@ -35,6 +36,7 @@ public class Team extends IdEntity {
 		this.name = name;
 	}
 
+	@NotNull
 	@OneToOne
 	@JoinColumn(name = "MASTER_ID")
 	public User getMaster() {
diff --git a/examples/showcase/src/main/java/org/springside/examples/showcase/entity/User.java b/examples/showcase/src/main/java/org/springside/examples/showcase/entity/User.java
index 87caef93..cf677a42 100644
--- a/examples/showcase/src/main/java/org/springside/examples/showcase/entity/User.java
+++ b/examples/showcase/src/main/java/org/springside/examples/showcase/entity/User.java
@@ -106,6 +106,8 @@ public class User extends IdEntity {
 		this.status = status;
 	}
 
+	//JSR303规则
+	@NotEmpty
 	//多对多定义
 	@ManyToMany
 	@JoinTable(name = "SS_USER_ROLE", joinColumns = { @JoinColumn(name = "USER_ID") }, inverseJoinColumns = { @JoinColumn(name = "ROLE_ID") })
@@ -115,8 +117,6 @@ public class User extends IdEntity {
 	@OrderBy("id ASC")
 	//缓存策略
 	@Cache(usage = CacheConcurrencyStrategy.READ_WRITE)
-	//JSR303规则
-	@NotEmpty
 	public List<Role> getRoleList() {
 		return roleList;
 	}
diff --git a/examples/showcase/src/test/java/org/springside/examples/showcase/service/AccountServiceTest.java b/examples/showcase/src/test/java/org/springside/examples/showcase/service/AccountServiceTest.java
index fe9119ee..77e1b6de 100644
--- a/examples/showcase/src/test/java/org/springside/examples/showcase/service/AccountServiceTest.java
+++ b/examples/showcase/src/test/java/org/springside/examples/showcase/service/AccountServiceTest.java
@@ -6,11 +6,11 @@ import org.junit.After;
 import org.junit.Before;
 import org.junit.Test;
 import org.mockito.Mock;
+import org.mockito.Mockito;
 import org.mockito.MockitoAnnotations;
 import org.springside.examples.showcase.entity.User;
 import org.springside.examples.showcase.repository.jpa.UserDao;
-import org.springside.examples.showcase.service.AccountService;
-import org.springside.examples.showcase.service.ServiceException;
+import org.springside.examples.showcase.service.ShiroDbRealm.ShiroUser;
 import org.springside.modules.test.security.shiro.ShiroTestUtils;
 
 public class AccountServiceTest {
@@ -22,7 +22,7 @@ public class AccountServiceTest {
 	@Before
 	public void setUp() {
 		MockitoAnnotations.initMocks(this);
-		ShiroTestUtils.mockSubject("foo");
+		ShiroTestUtils.mockSubject(new ShiroUser("foo", "Foo"));
 
 		accountService = new AccountService();
 		accountService.setUserDao(mockUserDao);
@@ -48,9 +48,10 @@ public class AccountServiceTest {
 		//保存超级管理用户抛出异常.
 		try {
 			accountService.saveUser(admin);
-			fail("expected ServicExcepton not be thrown");
+			fail("expected ServicExcepton should be thrown");
 		} catch (ServiceException e) {
 			//expected exception
 		}
+		Mockito.verify(mockUserDao, Mockito.never()).delete(1L);
 	}
 }
diff --git a/modules/core/src/main/java/org/springside/modules/beanvalidator/BeanValidators.java b/modules/core/src/main/java/org/springside/modules/beanvalidator/BeanValidators.java
index 6fa9d144..6a243bc1 100644
--- a/modules/core/src/main/java/org/springside/modules/beanvalidator/BeanValidators.java
+++ b/modules/core/src/main/java/org/springside/modules/beanvalidator/BeanValidators.java
@@ -21,8 +21,8 @@ import com.google.common.collect.Maps;
  * 
  * ConstraintViolation中包含propertyPath, message 和invalidValue等信息.
  * 提供了各种convert方法，适合不同的i18n需求:
- * 1. List<message>
- * 2. List<propertyPath + separator + message>
+ * 1. List<String>, String内容为message
+ * 2. List<String>, String内容为propertyPath + separator + message
  * 3. Map<propertyPath, message>
  * 
  * 详情见wiki: https://github.com/springside/springside4/wiki/HibernateValidator