spring boot and mvc

Spring/SourceCode/SpringBootSourceCode/pom.xml

@@ -4,6 +4,11 @@
   xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
   <modelVersion>4.0.0</modelVersion>
 
+  <parent>
+    <groupId>org.springframework.boot</groupId>
+    <artifactId>spring-boot-parent</artifactId>
+    <version>2.3.4.RELEASE</version>
+  </parent>
   <groupId>org.example</groupId>
   <artifactId>SpringBootSourceCode</artifactId>
   <version>1.0-SNAPSHOT</version>
@@ -19,12 +24,20 @@
   </properties>
 
   <dependencies>
+    <dependency>
+      <groupId>org.springframework.boot</groupId>
+      <artifactId>spring-boot-starter-web</artifactId>
+    </dependency>
     <dependency>
       <groupId>junit</groupId>
       <artifactId>junit</artifactId>
       <version>4.11</version>
       <scope>test</scope>
     </dependency>
+      <dependency>
+          <groupId>org.projectlombok</groupId>
+          <artifactId>lombok</artifactId>
+      </dependency>
   </dependencies>
 
   <build>

Spring/SourceCode/SpringBootSourceCode/src/main/java/org/example/App.java

@@ -1,13 +1,18 @@
 package org.example;
 
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
 /**
  * Hello world!
  *
  */
+@SpringBootApplication
 public class App 
 {
     public static void main( String[] args )
     {
+        SpringApplication.run(App.class);
         System.out.println( "Hello World!" );
     }
 }

Spring/SourceCode/SpringBootSourceCode/src/main/java/org/example/config/MyConfiguration.java

@@ -0,0 +1,115 @@
+package org.example.config;
+
+import lombok.Data;
+import org.apache.catalina.Group;
+import org.apache.catalina.Role;
+import org.apache.catalina.User;
+import org.apache.catalina.UserDatabase;
+import org.springframework.boot.autoconfigure.web.ResourceProperties;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+import java.util.Iterator;
+@Data
+@Configuration
+public class MyConfiguration {
+
+    @Bean
+    public User getUser(){
+        ResourceProperties resourceProperties = new ResourceProperties();
+
+        resourceProperties.getChain();
+
+        return new User() {
+            @Override
+            public String getFullName() {
+                return null;
+            }
+
+            @Override
+            public void setFullName(String s) {
+
+            }
+
+            @Override
+            public Iterator<Group> getGroups() {
+                return null;
+            }
+
+            @Override
+            public String getPassword() {
+                return null;
+            }
+
+            @Override
+            public void setPassword(String s) {
+
+            }
+
+            @Override
+            public Iterator<Role> getRoles() {
+                return null;
+            }
+
+            @Override
+            public UserDatabase getUserDatabase() {
+                return null;
+            }
+
+            @Override
+            public String getUsername() {
+                return null;
+            }
+
+            @Override
+            public void setUsername(String s) {
+
+            }
+
+            @Override
+            public void addGroup(Group group) {
+
+            }
+
+            @Override
+            public void addRole(Role role) {
+
+            }
+
+            @Override
+            public boolean isInGroup(Group group) {
+                return false;
+            }
+
+            @Override
+            public boolean isInRole(Role role) {
+                return false;
+            }
+
+            @Override
+            public void removeGroup(Group group) {
+
+            }
+
+            @Override
+            public void removeGroups() {
+
+            }
+
+            @Override
+            public void removeRole(Role role) {
+
+            }
+
+            @Override
+            public void removeRoles() {
+
+            }
+
+            @Override
+            public String getName() {
+                return null;
+            }
+        };
+    }
+}

Spring/SourceCode/SpringBootSourceCode/src/main/java/org/example/controller/HelloController.java

@@ -0,0 +1,17 @@
+package org.example.controller;
+
+import org.springframework.stereotype.Controller;
+import org.springframework.web.bind.annotation.*;
+
+@Controller
+public class HelloController {
+
+
+    @ResponseBody
+    @RequestMapping(value = "/hello",method = RequestMethod.GET)
+    public String hello(){
+        return "Hello World!";
+    }
+
+
+}

Spring/SourceCode/SpringBootSourceCode/src/main/java/org/example/controller/TestController.java

@@ -0,0 +1,43 @@
+package org.example.controller;
+
+
+import org.springframework.stereotype.Controller;
+import org.springframework.ui.Model;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.ResponseBody;
+
+import javax.servlet.http.Cookie;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import java.util.HashMap;
+import java.util.Map;
+
+@Controller
+public class TestController {
+
+    @GetMapping("/params")
+    public String helloWorld(Map<String,String> map,
+                             Model model,
+                             HttpServletRequest request,
+                             HttpServletResponse response){
+
+        map.put("map","123");
+        model.addAttribute("model","model123");
+        request.setAttribute("request","request123");
+
+        Cookie cookie = new Cookie("cookie","cookie123");
+
+        return "forward:/success";
+    }
+
+    @ResponseBody
+    @GetMapping("/success")
+    public Map<String,Object> success(HttpServletRequest request){
+        Map<String,Object> map= new HashMap<>();
+        map.put("map",request.getAttribute("map"));
+        map.put("model",request.getAttribute("model"));
+        map.put("request",request.getAttribute("request"));
+
+        return map;
+    }
+}