using annotation based congiguration

Author: gowrishankar95

UserManagement/pom.xml

@@ -34,17 +34,23 @@
 			<artifactId>spring-jdbc</artifactId>
 			<version>4.1.0.RELEASE</version>
 		</dependency>
-		<dependency>
-			<groupId>mysql</groupId>
-			<artifactId>mysql-connector-java</artifactId>
-		</dependency>
+
 		<dependency>
 			<groupId>com.google.code.gson</groupId>
 			<artifactId>gson</artifactId>
 			<version>2.8.4</version>
 		</dependency>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-data-jpa</artifactId>
+		</dependency>
+		<dependency>
+			<groupId>mysql</groupId>
+			<artifactId>mysql-connector-java</artifactId>
+		</dependency>
 	</dependencies>
 
+
 	<build>
 		<plugins>
 			<plugin>

UserManagement/src/main/java/com/hms/mangement/UserManagement/Configuration.java

@@ -0,0 +1,57 @@
+package com.hms.mangement.UserManagement;
+
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.boot.jdbc.DataSourceBuilder;
+import org.springframework.context.annotation.Bean;
+import org.springframework.jdbc.core.JdbcTemplate;
+import javax.sql.DataSource;
+import java.beans.PropertyVetoException;
+
+@org.springframework.context.annotation.Configuration
+
+public class Configuration {
+    @Value("${spring.datasource.driver-class-name}")
+    private String jdbcDriverName;
+    @Value("${url}")
+    private String jdbcURl;
+
+    @Value("${spring.datasource.url}")
+    private String dbUsername;
+
+    @Value("${spring.datasource.password}")
+    private String dbPassword;
+
+    @Bean
+    public DataSource datasource() throws PropertyVetoException {
+        /*ApplicationContext context = new ClassPathXmlApplicationContext("been.xml");
+        DataSource dataSource = (DataSource) context.getBean("dataSource");
+        return dataSource;*/
+        System.out.println("hello"+jdbcURl);
+        return DataSourceBuilder
+                .create()
+                .username("root")
+                .password("beyondm")
+                .url("jdbc:mysql://localhost:3306/userDatabase")
+                .driverClassName("com.mysql.jdbc.Driver")
+                .build();
+    }
+
+    @Bean
+    public JdbcTemplate jdbcTemplate(){
+        try {
+            return new JdbcTemplate(datasource());
+        } catch (PropertyVetoException e) {
+            e.printStackTrace();
+            return null;
+        }
+    }
+    @Bean
+    public UserDAOClass userDAO(){
+        UserDAOClass userDAOClass = new UserDAOClass();
+        userDAOClass.setJdbcTemplate(jdbcTemplate());
+        return userDAOClass;
+    }
+
+
+
+}

UserManagement/src/main/java/com/hms/mangement/UserManagement/Controller.java

@@ -2,6 +2,7 @@
 
 import com.google.gson.Gson;
 import org.springframework.context.ApplicationContext;
+import org.springframework.context.annotation.AnnotationConfigApplicationContext;
 import org.springframework.context.support.ClassPathXmlApplicationContext;
 import org.springframework.web.bind.annotation.*;
 
@@ -10,13 +11,14 @@
 @RestController
 public class Controller {
 
-    private ApplicationContext context ;
-    private UserJDBCTemplate userJDBCTemplate ;
-    
+    private ApplicationContext context;
+    private UserDAO userJDBCTemplate;
+
 
     public Controller() {
-        this.context = new ClassPathXmlApplicationContext("been.xml");
-        this.userJDBCTemplate = (UserJDBCTemplate) context.getBean("userJDBCTemplate");
+        this.context = new AnnotationConfigApplicationContext(Configuration.class);
+        this.userJDBCTemplate = context.getBean(UserDAO.class);
+
     }
 
     @GetMapping(value = "/Users")
@@ -48,8 +50,7 @@ public String createUsers(@RequestParam(value = "userName", defaultValue = " ")
         } else if (user.getPassword().length() > 20) {
             System.out.println("password cannot exceed 20 characters");
             return "password cannot exceed 20 characters";
-        }
-        else {
+        } else {
             userJDBCTemplate.create(user);
             return "created new user";
         }
@@ -61,7 +62,7 @@ public String updatePassword(@RequestParam(value = "id", defaultValue = " ") int
                                  @RequestParam(value = "opassword", defaultValue = " ") String oldPassword,
                                  @RequestParam(value = "npassword", defaultValue = " ") String newPassword) {
 
-        return  userJDBCTemplate.updatePassword(id,oldPassword,newPassword);
+        return userJDBCTemplate.updatePassword(id, oldPassword, newPassword);
 
     }
 
@@ -70,5 +71,5 @@ public String deleteUser(@RequestParam(value = "id", defaultValue = " ") int id)
 
         return userJDBCTemplate.deleteUser(id);
     }
-
 }
+

UserManagement/src/main/java/com/hms/mangement/UserManagement/UserDAO.java

@@ -3,9 +3,9 @@
 import javax.sql.DataSource;
 import java.util.List;
 
-public interface UserDAO {
+public interface UserDAO  {
+
 
-  
     //public void setDataSource(DataSource ds);
 
     /**

UserManagement/src/main/java/com/hms/mangement/UserManagement/UserJDBCTemplate.java renamed to UserManagement/src/main/java/com/hms/mangement/UserManagement/UserDAOClass.java

@@ -1,14 +1,11 @@
 package com.hms.mangement.UserManagement;
 
-import org.springframework.context.ApplicationContext;
-import org.springframework.context.support.ClassPathXmlApplicationContext;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.jdbc.core.JdbcTemplate;
-
-import javax.sql.DataSource;
 import java.util.List;
 
-public class UserJDBCTemplate implements UserDAO {
-
+public class UserDAOClass implements UserDAO {
+    @Autowired
     private JdbcTemplate jdbcTemplate;
    // private DataSource dataSource;
 
@@ -43,17 +40,15 @@ public void create(User user) {
     public String deleteUser(int id) {
         User user = isIdExist(id);
         if (user == null) {
-            System.out.println("id not found");
-            return "id not found";
+            System.out.println("User with id "+id+" not found");
+            return "User with id "+id+" not found";
         } else {
             String sql = "DELETE  FROM users  WHERE UserId=?";
             jdbcTemplate.update(sql,id);
             System.out.println("user id "+ id +" deleted");
             return "user id "+ id +" deleted";
 
         }
-
-
     }
 
     @Override
@@ -78,16 +73,16 @@ public User isIdExist(int userId) {
     public String updatePassword(int id, String oldPassword, String newPassword) {
         User user = isIdExist(id);
         if (user == null) {
-            System.out.println("id not found");
-            return "id not found";
+            System.out.println("User with id "+id+" not found");
+            return "User with id "+id+" not found";
         }
         else if (!user.getPassword().equals(oldPassword)) {
             return "invalid password";
         } else {
             String sql = "UPDATE users SET passowrd=? WHERE UserId=?";
             jdbcTemplate.update(sql,newPassword,id);
-            System.out.println("record updated");
-            return "update success";
+            System.out.println("User Id "+id+" password succesfully updated");
+            return "User Id "+id+" password succesfully updated";
 
         }
     }

UserManagement/src/main/resources/application.properties

@@ -1,3 +1,8 @@
+spring.datasource.url=jdbc:mysql://localhost:3306/userDatabase
+spring.datasource.username=root
+spring.datasource.password=beyondm
+spring.datasource.driver-class-name=com.mysql.jdbc.Driver
+spring.jpa.database-platform = org.hibernate.dialect.MySQL5Dialect
+
+url=jdbc:mysql://localhost:3306/userDatabase
 
-message.default.welcome=Welcome...
-message.default.goodbye=Goodbye...

UserManagement/src/main/resources/been.xml

@@ -14,17 +14,6 @@
     </bean>
 
 
-    <!-- Definition for studentJDBCTemplate bean -->
-    <bean id="userJDBCTemplate" class="com.hms.mangement.UserManagement.UserJDBCTemplate">
-
-        <property name="jdbcTemplate" ref="JdbcTemplateRef"/>
-    </bean>
-    <bean id="JdbcTemplateRef" class="org.springframework.jdbc.core.JdbcTemplate">
-        <property name="dataSource" ref="dataSource"/>
-    </bean>
-    <bean id="UserMapper" class="com.hms.mangement.UserManagement.UserMapper">
-
-    </bean>
 
 
 </beans>