From e51834c899ff20781295410961934eb06239385c Mon Sep 17 00:00:00 2001
From: Kamal Wickramanayake <kamal@inbox.lk>
Date: Sat, 16 May 2026 21:18:32 +0530
Subject: Added spring-boot sample applications

---
 spring-boot/05-bank-rest-client/.gitignore         |  1 +
 spring-boot/05-bank-rest-client/pom.xml            | 28 +++++++++++++
 .../main/java/com/example/spring/Application.java  | 12 ++++++
 .../com/example/spring/bank/account/Account.java   | 27 +++++++++++++
 .../spring/bank/account/AccountService.java        | 24 +++++++++++
 .../spring/bank/restclient/test/AccForm.java       | 13 ++++++
 .../bank/restclient/test/RestClientTest.java       | 46 ++++++++++++++++++++++
 .../src/main/resources/application.properties      | 12 ++++++
 .../src/main/resources/templates/form.html         | 17 ++++++++
 .../src/main/resources/templates/index.html        | 16 ++++++++
 .../src/main/resources/templates/result.html       | 15 +++++++
 11 files changed, 211 insertions(+)
 create mode 100644 spring-boot/05-bank-rest-client/.gitignore
 create mode 100644 spring-boot/05-bank-rest-client/pom.xml
 create mode 100644 spring-boot/05-bank-rest-client/src/main/java/com/example/spring/Application.java
 create mode 100644 spring-boot/05-bank-rest-client/src/main/java/com/example/spring/bank/account/Account.java
 create mode 100644 spring-boot/05-bank-rest-client/src/main/java/com/example/spring/bank/account/AccountService.java
 create mode 100644 spring-boot/05-bank-rest-client/src/main/java/com/example/spring/bank/restclient/test/AccForm.java
 create mode 100644 spring-boot/05-bank-rest-client/src/main/java/com/example/spring/bank/restclient/test/RestClientTest.java
 create mode 100644 spring-boot/05-bank-rest-client/src/main/resources/application.properties
 create mode 100644 spring-boot/05-bank-rest-client/src/main/resources/templates/form.html
 create mode 100644 spring-boot/05-bank-rest-client/src/main/resources/templates/index.html
 create mode 100644 spring-boot/05-bank-rest-client/src/main/resources/templates/result.html

(limited to 'spring-boot/05-bank-rest-client')

diff --git a/spring-boot/05-bank-rest-client/.gitignore b/spring-boot/05-bank-rest-client/.gitignore
new file mode 100644
index 0000000..eb5a316
--- /dev/null
+++ b/spring-boot/05-bank-rest-client/.gitignore
@@ -0,0 +1 @@
+target
diff --git a/spring-boot/05-bank-rest-client/pom.xml b/spring-boot/05-bank-rest-client/pom.xml
new file mode 100644
index 0000000..520bf43
--- /dev/null
+++ b/spring-boot/05-bank-rest-client/pom.xml
@@ -0,0 +1,28 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
+	<modelVersion>4.0.0</modelVersion>
+
+	<parent>
+		<groupId>com.example.spring.boot</groupId>
+		<artifactId>base-config</artifactId>
+		<version>0.0.1-SNAPSHOT</version>
+		<relativePath>../00-config</relativePath>
+	</parent>
+
+	<artifactId>bank-rest-client</artifactId>
+
+	<dependencies>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-restclient</artifactId>
+		</dependency>
+
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-thymeleaf</artifactId>
+		</dependency>
+	</dependencies>
+
+</project>
\ No newline at end of file
diff --git a/spring-boot/05-bank-rest-client/src/main/java/com/example/spring/Application.java b/spring-boot/05-bank-rest-client/src/main/java/com/example/spring/Application.java
new file mode 100644
index 0000000..4393f3f
--- /dev/null
+++ b/spring-boot/05-bank-rest-client/src/main/java/com/example/spring/Application.java
@@ -0,0 +1,12 @@
+package com.example.spring;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class Application {
+
+	public static void main(String[] args) throws Exception {
+		SpringApplication.run(Application.class, args);
+	}
+}
\ No newline at end of file
diff --git a/spring-boot/05-bank-rest-client/src/main/java/com/example/spring/bank/account/Account.java b/spring-boot/05-bank-rest-client/src/main/java/com/example/spring/bank/account/Account.java
new file mode 100644
index 0000000..f9789e4
--- /dev/null
+++ b/spring-boot/05-bank-rest-client/src/main/java/com/example/spring/bank/account/Account.java
@@ -0,0 +1,27 @@
+package com.example.spring.bank.account;
+
+import java.math.BigDecimal;
+
+public class Account {
+	private int accountNumber;
+    
+	private BigDecimal balance;
+	
+	public int getAccountNumber() {
+		return accountNumber;
+	}
+	public void setAccountNumber(int accountNumber) {
+		this.accountNumber = accountNumber;
+	}
+	public BigDecimal getBalance() {
+		return balance;
+	}
+	public void setBalance(BigDecimal balance) {
+		this.balance = balance;
+	}
+	
+	@Override
+	public String toString() {
+		return "Account [accountNumber=" + accountNumber + ", balance=" + balance + "]";
+	}
+}
\ No newline at end of file
diff --git a/spring-boot/05-bank-rest-client/src/main/java/com/example/spring/bank/account/AccountService.java b/spring-boot/05-bank-rest-client/src/main/java/com/example/spring/bank/account/AccountService.java
new file mode 100644
index 0000000..c7b3804
--- /dev/null
+++ b/spring-boot/05-bank-rest-client/src/main/java/com/example/spring/bank/account/AccountService.java
@@ -0,0 +1,24 @@
+package com.example.spring.bank.account;
+
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.boot.restclient.RestTemplateBuilder;
+import org.springframework.stereotype.Service;
+import org.springframework.web.client.RestTemplate;
+
+@Service
+public class AccountService {
+
+	@Value("${rest.baseURL}")
+	private String restBaseURL;
+	
+	private final RestTemplate restTemplate;
+
+	public AccountService(RestTemplateBuilder restTemplateBuilder) {
+		this.restTemplate = restTemplateBuilder.build();
+	}
+	
+	public Account getAccount(Integer accno) {
+		return this.restTemplate.getForObject(restBaseURL + "/account/{accno}", Account.class, accno);
+	}
+	
+}
\ No newline at end of file
diff --git a/spring-boot/05-bank-rest-client/src/main/java/com/example/spring/bank/restclient/test/AccForm.java b/spring-boot/05-bank-rest-client/src/main/java/com/example/spring/bank/restclient/test/AccForm.java
new file mode 100644
index 0000000..9b58dae
--- /dev/null
+++ b/spring-boot/05-bank-rest-client/src/main/java/com/example/spring/bank/restclient/test/AccForm.java
@@ -0,0 +1,13 @@
+package com.example.spring.bank.restclient.test;
+
+public class AccForm {
+
+	private Integer accNo;
+	
+	public Integer getAccNo() {
+		return accNo;
+	}
+	public void setAccNo(Integer accNo) {
+		this.accNo = accNo;
+	}
+}
diff --git a/spring-boot/05-bank-rest-client/src/main/java/com/example/spring/bank/restclient/test/RestClientTest.java b/spring-boot/05-bank-rest-client/src/main/java/com/example/spring/bank/restclient/test/RestClientTest.java
new file mode 100644
index 0000000..adf4755
--- /dev/null
+++ b/spring-boot/05-bank-rest-client/src/main/java/com/example/spring/bank/restclient/test/RestClientTest.java
@@ -0,0 +1,46 @@
+package com.example.spring.bank.restclient.test;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Controller;
+import org.springframework.ui.Model;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.ModelAttribute;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.servlet.ModelAndView;
+
+import com.example.spring.bank.account.Account;
+import com.example.spring.bank.account.AccountService;
+
+@Controller
+public class RestClientTest {
+
+	@Autowired
+	private AccountService accountService;
+	
+	@GetMapping("/acc")
+	public String accountForm(Model model) {
+		model.addAttribute("account", new AccForm());
+		return "form";
+	}
+	
+	@PostMapping("/acc")
+	public ModelAndView accountSubmission(@ModelAttribute AccForm accForm) {
+		
+		Account account = accountService.getAccount(accForm.getAccNo());
+
+		ModelAndView mav = new ModelAndView();
+		mav.addObject("account", account);
+		
+		mav.setViewName("result");
+        
+		return mav;
+	}
+	
+	
+	@RequestMapping("/")
+	public String checkAccount() {
+		return "index";
+	}
+	
+}
diff --git a/spring-boot/05-bank-rest-client/src/main/resources/application.properties b/spring-boot/05-bank-rest-client/src/main/resources/application.properties
new file mode 100644
index 0000000..cf862c6
--- /dev/null
+++ b/spring-boot/05-bank-rest-client/src/main/resources/application.properties
@@ -0,0 +1,12 @@
+# Possible locations of this file:
+# (Properties defined in locations higher in the list override those defined in lower locations)
+#
+#   A /config subdirectory of the current directory
+#   The current directory
+#   A classpath /config package
+#   The classpath root
+#
+
+server.port = 8081
+
+rest.baseURL=http://localhost:8080
\ No newline at end of file
diff --git a/spring-boot/05-bank-rest-client/src/main/resources/templates/form.html b/spring-boot/05-bank-rest-client/src/main/resources/templates/form.html
new file mode 100644
index 0000000..7927b92
--- /dev/null
+++ b/spring-boot/05-bank-rest-client/src/main/resources/templates/form.html
@@ -0,0 +1,17 @@
+<!DOCTYPE HTML>
+<html xmlns:th="http://www.thymeleaf.org">
+
+<head>
+    <title>Check Account Balance</title>
+    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
+</head>
+
+<body>
+	<h1>Form</h1>
+    <form action="#" th:action="@{/acc}" th:object="${account}" method="post">
+    	<p>Account number: <input type="text" th:field="*{accNo}" /></p>
+        <p><input type="submit" value="Submit" /> <input type="reset" value="Reset" /></p>
+    </form>
+</body>
+
+</html>
\ No newline at end of file
diff --git a/spring-boot/05-bank-rest-client/src/main/resources/templates/index.html b/spring-boot/05-bank-rest-client/src/main/resources/templates/index.html
new file mode 100644
index 0000000..f30a2c0
--- /dev/null
+++ b/spring-boot/05-bank-rest-client/src/main/resources/templates/index.html
@@ -0,0 +1,16 @@
+<!DOCTYPE HTML>
+<html xmlns:th="http://www.thymeleaf.org">
+
+<head>
+    <title>Check Account Balance</title>
+    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
+</head>
+
+<body>
+
+Access <a href="/acc">/acc</a>
+
+</body>
+
+</html>
+
diff --git a/spring-boot/05-bank-rest-client/src/main/resources/templates/result.html b/spring-boot/05-bank-rest-client/src/main/resources/templates/result.html
new file mode 100644
index 0000000..15393be
--- /dev/null
+++ b/spring-boot/05-bank-rest-client/src/main/resources/templates/result.html
@@ -0,0 +1,15 @@
+<!DOCTYPE HTML>
+<html xmlns:th="http://www.thymeleaf.org">
+<head>
+    <title>Check Account Balance</title>
+    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
+</head>
+<body>
+	<h1>Result</h1>
+    
+    <p th:text="'Account number: ' + ${account.accountNumber}" />
+    <p th:text="'Balance: ' + ${account.balance}" />
+    
+    <a href="/acc">Try again</a>
+</body>
+</html>
\ No newline at end of file
-- 
cgit v1.2.3