Add ":servlet:spring-boot:java:oauth2:resource-server:static"

servlet/spring-boot/java/oauth2/resource-server/static/README.adoc

@@ -0,0 +1,82 @@
+= OAuth 2.0 Resource Server Sample
+
+This sample demonstrates integrating Resource Server with a pre-configured key.
+
+With it, you can run the integration tests or run the application as a stand-alone service to explore how you can
+secure your own service with OAuth 2.0 Bearer Tokens using Spring Security.
+
+== 1. Running the tests
+
+To run the tests, do:
+
+```bash
+./gradlew integrationTest
+```
+
+Or import the project into your IDE and run `OAuth2ResourceServerApplicationITests` from there.
+
+=== What is it doing?
+
+By default, the application is configured with an RSA public key that is available in the sample.
+
+The tests are configured with a set of hard-coded tokens that are signed with the corresponding RSA private key.
+Each test makes a query to the Resource Server with their corresponding token.
+
+The Resource Server subsequently verifies the token against the public key and authorizes the request, returning the phrase
+
+```bash
+Hello, subject!
+```
+
+where "subject" is the value of the `sub` field in the token.
+
+== 2. Running the app
+
+To run as a stand-alone application, do:
+
+```bash
+./gradlew bootRun
+```
+
+Or import the project into your IDE and run `OAuth2ResourceServerApplication` from there.
+
+Once it is up, you can use the following token:
+
+```bash
+export TOKEN=eyJhbGciOiJSUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiJzdWJqZWN0IiwiaWF0IjoxNTE2MjM5MDIyfQ.eB2c9xtg5wcCZxZ-o-sH4Mx1JGkqAZwH4_WS0UcDbj_nen0NPBj6CqOEPhr_LZDagb4mM6HoAPJywWWG8b_Ylnn5r2gWDzib2mb0kxIuAjnvVBrpzusw4ItTVvP_srv2DrwcisKYiKqU5X_3ka7MSVvKtswdLY3RXeCJ_S2W9go
+```
+
+And then make this request:
+
+```bash
+curl -H "Authorization: Bearer $TOKEN" localhost:8080
+```
+
+Which will respond with the phrase:
+
+```bash
+Hello, subject!
+```
+
+where `subject` is the value of the `sub` field in the token.
+
+Or this:
+
+```bash
+export TOKEN=eyJhbGciOiJSUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiJzdWJqZWN0IiwiaWF0IjoxNTE2MjM5MDIyLCJzY29wZSI6Im1lc3NhZ2U6cmVhZCJ9.bsRCpUEaiWnzX4OqNxTBqwUD4vxxtPp-CHKTw7XcrglrvZ2lvYXaiZZbCp-hcPhuzMEzEAFuH6s4GZZOWVIX-wT47GdTz9cfA-Z4QPjS2RxePKphFXgBI3jHEpQo94Qya2fJdV4LvgBmA1uM_RTnYY1UbmeYuHKnXrZoGyV8QQQ
+
+curl -H "Authorization: Bearer $TOKEN" localhost:8080/message
+```
+
+Will respond with:
+
+```bash
+secret message
+```
+
+== 3. Testing with Other Tokens
+
+You can create your own tokens. Simply edit the public key in `OAuth2ResourceServerSecurityConfiguration` to match the private key you use.
+
+To use the `/` endpoint, any valid token will do.
+To use the `/message` endpoint, the token should have the `message:read` scope.

servlet/spring-boot/java/oauth2/resource-server/static/build.gradle

@@ -0,0 +1,40 @@
+/*
+ * Copyright 2020 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+plugins {
+	id 'org.springframework.boot' version '2.2.6.RELEASE'
+	id 'io.spring.dependency-management' version '1.0.9.RELEASE'
+	id "nebula.integtest" version "7.0.9"
+	id 'java'
+}
+
+repositories {
+	mavenCentral()
+	maven { url "https://repo.spring.io/snapshot" }
+}
+
+dependencies {
+	implementation 'com.squareup.okhttp3:mockwebserver'
+	implementation 'org.springframework.boot:spring-boot-starter-oauth2-resource-server'
+	implementation 'org.springframework.boot:spring-boot-starter-web'
+
+	testImplementation 'org.springframework.boot:spring-boot-starter-test'
+	testImplementation 'org.springframework.security:spring-security-test'
+}
+
+tasks.withType(Test).configureEach {
+	useJUnitPlatform()
+}

servlet/spring-boot/java/oauth2/resource-server/static/gradle.properties

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+spring-security.version=5.4.0.BUILD-SNAPSHOT

servlet/spring-boot/java/oauth2/resource-server/static/gradle/wrapper/gradle-wrapper.properties

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+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.2.2-bin.zip
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists

servlet/spring-boot/java/oauth2/resource-server/static/gradlew

@@ -0,0 +1,183 @@
+#!/usr/bin/env sh
+
+#
+# Copyright 2015 the original author or authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+##############################################################################
+##
+##  Gradle start up script for UN*X
+##
+##############################################################################
+
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
+
+APP_NAME="Gradle"
+APP_BASE_NAME=`basename "$0"`
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn () {
+    echo "$*"
+}
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+}
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "`uname`" in
+  CYGWIN* )
+    cygwin=true
+    ;;
+  Darwin* )
+    darwin=true
+    ;;
+  MINGW* )
+    msys=true
+    ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD="$JAVA_HOME/jre/sh/java"
+    else
+        JAVACMD="$JAVA_HOME/bin/java"
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD="java"
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
+    MAX_FD_LIMIT=`ulimit -H -n`
+    if [ $? -eq 0 ] ; then
+        if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
+            MAX_FD="$MAX_FD_LIMIT"
+        fi
+        ulimit -n $MAX_FD
+        if [ $? -ne 0 ] ; then
+            warn "Could not set maximum file descriptor limit: $MAX_FD"
+        fi
+    else
+        warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
+    fi
+fi
+
+# For Darwin, add options to specify how the application appears in the dock
+if $darwin; then
+    GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
+fi
+
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if [ "$cygwin" = "true" -o "$msys" = "true" ] ; then
+    APP_HOME=`cygpath --path --mixed "$APP_HOME"`
+    CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    JAVACMD=`cygpath --unix "$JAVACMD"`
+
+    # We build the pattern for arguments to be converted via cygpath
+    ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
+    SEP=""
+    for dir in $ROOTDIRSRAW ; do
+        ROOTDIRS="$ROOTDIRS$SEP$dir"
+        SEP="|"
+    done
+    OURCYGPATTERN="(^($ROOTDIRS))"
+    # Add a user-defined pattern to the cygpath arguments
+    if [ "$GRADLE_CYGPATTERN" != "" ] ; then
+        OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
+    fi
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    i=0
+    for arg in "$@" ; do
+        CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
+        CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option
+
+        if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
+            eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
+        else
+            eval `echo args$i`="\"$arg\""
+        fi
+        i=`expr $i + 1`
+    done
+    case $i in
+        0) set -- ;;
+        1) set -- "$args0" ;;
+        2) set -- "$args0" "$args1" ;;
+        3) set -- "$args0" "$args1" "$args2" ;;
+        4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+        5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+        6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+        7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+        8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+        9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+    esac
+fi
+
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
+}
+APP_ARGS=`save "$@"`
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+exec "$JAVACMD" "$@"

servlet/spring-boot/java/oauth2/resource-server/static/gradlew.bat

@@ -0,0 +1,103 @@
+@rem
+@rem Copyright 2015 the original author or authors.
+@rem
+@rem Licensed under the Apache License, Version 2.0 (the "License");
+@rem you may not use this file except in compliance with the License.
+@rem You may obtain a copy of the License at
+@rem
+@rem      https://www.apache.org/licenses/LICENSE-2.0
+@rem
+@rem Unless required by applicable law or agreed to in writing, software
+@rem distributed under the License is distributed on an "AS IS" BASIS,
+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+@rem See the License for the specific language governing permissions and
+@rem limitations under the License.
+@rem
+
+@if "%DEBUG%" == "" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%" == "" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Resolve any "." and ".." in APP_HOME to make it shorter.
+for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if "%ERRORLEVEL%" == "0" goto init
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto init
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:init
+@rem Get command-line arguments, handling Windows variants
+
+if not "%OS%" == "Windows_NT" goto win9xME_args
+
+:win9xME_args
+@rem Slurp the command line arguments.
+set CMD_LINE_ARGS=
+set _SKIP=2
+
+:win9xME_args_slurp
+if "x%~1" == "x" goto execute
+
+set CMD_LINE_ARGS=%*
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
+
+:end
+@rem End local scope for the variables with windows NT shell
+if "%ERRORLEVEL%"=="0" goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
+exit /b 1
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega

servlet/spring-boot/java/oauth2/resource-server/static/settings.gradle

@@ -0,0 +1 @@
+

servlet/spring-boot/java/oauth2/resource-server/static/src/integTest/java/example/OAuth2ResourceServerApplicationITests.java

@@ -0,0 +1,105 @@
+/*
+ * Copyright 2020 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package example;
+
+import org.junit.jupiter.api.Test;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.autoconfigure.web.servlet.AutoConfigureMockMvc;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.http.HttpHeaders;
+import org.springframework.mock.web.MockHttpServletRequest;
+import org.springframework.test.context.ActiveProfiles;
+import org.springframework.test.web.servlet.MockMvc;
+import org.springframework.test.web.servlet.request.RequestPostProcessor;
+
+import static org.hamcrest.Matchers.containsString;
+import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.content;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.header;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;
+
+/**
+ * Integration tests for {@link OAuth2ResourceServerApplication}.
+ *
+ * @author Josh Cummings
+ */
+@SpringBootTest
+@AutoConfigureMockMvc
+@ActiveProfiles("test")
+public class OAuth2ResourceServerApplicationITests {
+
+	String noScopesToken = "eyJhbGciOiJSUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiJzdWJqZWN0IiwiaWF0IjoxNTE2MjM5MDIyfQ.eB2c9xtg5wcCZxZ-o-sH4Mx1JGkqAZwH4_WS0UcDbj_nen0NPBj6CqOEPhr_LZDagb4mM6HoAPJywWWG8b_Ylnn5r2gWDzib2mb0kxIuAjnvVBrpzusw4ItTVvP_srv2DrwcisKYiKqU5X_3ka7MSVvKtswdLY3RXeCJ_S2W9go";
+
+	String messageReadToken = "eyJhbGciOiJSUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiJzdWJqZWN0IiwiaWF0IjoxNTE2MjM5MDIyLCJzY29wZSI6Im1lc3NhZ2U6cmVhZCJ9.bsRCpUEaiWnzX4OqNxTBqwUD4vxxtPp-CHKTw7XcrglrvZ2lvYXaiZZbCp-hcPhuzMEzEAFuH6s4GZZOWVIX-wT47GdTz9cfA-Z4QPjS2RxePKphFXgBI3jHEpQo94Qya2fJdV4LvgBmA1uM_RTnYY1UbmeYuHKnXrZoGyV8QQQ";
+
+	@Autowired
+	MockMvc mvc;
+
+	@Test
+	void performWhenValidBearerTokenThenAllows() throws Exception {
+
+		// @formatter:off
+		this.mvc.perform(get("/").with(bearerToken(this.noScopesToken)))
+				.andExpect(status().isOk())
+				.andExpect(content().string(containsString("Hello, subject!")));
+		// @formatter:on
+	}
+
+	// -- tests with scopes
+
+	@Test
+	void performWhenValidBearerTokenThenScopedRequestsAlsoWork() throws Exception {
+
+		// @formatter:off
+		this.mvc.perform(get("/message").with(bearerToken(this.messageReadToken)))
+				.andExpect(status().isOk())
+				.andExpect(content().string(containsString("secret message")));
+		// @formatter:on
+	}
+
+	@Test
+	void performWhenInsufficientlyScopedBearerTokenThenDeniesScopedMethodAccess() throws Exception {
+
+		// @formatter:off
+		this.mvc.perform(get("/message").with(bearerToken(this.noScopesToken)))
+				.andExpect(status().isForbidden())
+				.andExpect(header().string(HttpHeaders.WWW_AUTHENTICATE,
+						containsString("Bearer error=\"insufficient_scope\"")));
+		// @formatter:on
+	}
+
+	private static BearerTokenRequestPostProcessor bearerToken(String token) {
+		return new BearerTokenRequestPostProcessor(token);
+	}
+
+	private static class BearerTokenRequestPostProcessor implements RequestPostProcessor {
+
+		private String token;
+
+		BearerTokenRequestPostProcessor(String token) {
+			this.token = token;
+		}
+
+		@Override
+		public MockHttpServletRequest postProcessRequest(MockHttpServletRequest request) {
+			request.addHeader("Authorization", "Bearer " + this.token);
+			return request;
+		}
+
+	}
+
+}

servlet/spring-boot/java/oauth2/resource-server/static/src/main/java/example/OAuth2ResourceServerApplication.java

@@ -0,0 +1,33 @@
+/*
+ * Copyright 2020 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package example;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+/**
+ * OAuth2 Resource Server Application.
+ *
+ * @author Josh Cummings
+ */
+@SpringBootApplication
+public class OAuth2ResourceServerApplication {
+
+	public static void main(String[] args) {
+		SpringApplication.run(OAuth2ResourceServerApplication.class, args);
+	}
+
+}

servlet/spring-boot/java/oauth2/resource-server/static/src/main/java/example/OAuth2ResourceServerController.java

@@ -0,0 +1,41 @@
+/*
+ * Copyright 2020 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package example;
+
+import org.springframework.security.core.annotation.AuthenticationPrincipal;
+import org.springframework.security.oauth2.jwt.Jwt;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+/**
+ * An OAuth Controller.
+ *
+ * @author Josh Cummings
+ */
+@RestController
+public class OAuth2ResourceServerController {
+
+	@GetMapping("/")
+	public String index(@AuthenticationPrincipal Jwt jwt) {
+		return String.format("Hello, %s!", jwt.getSubject());
+	}
+
+	@GetMapping("/message")
+	public String message() {
+		return "secret message";
+	}
+
+}

servlet/spring-boot/java/oauth2/resource-server/static/src/main/java/example/OAuth2ResourceServerSecurityConfiguration.java

@@ -0,0 +1,60 @@
+/*
+ * Copyright 2020 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package example;
+
+import java.security.interfaces.RSAPublicKey;
+
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.context.annotation.Bean;
+import org.springframework.security.config.annotation.web.builders.HttpSecurity;
+import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
+import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
+import org.springframework.security.oauth2.jwt.JwtDecoder;
+import org.springframework.security.oauth2.jwt.NimbusJwtDecoder;
+
+/**
+ * OAuth2 Resource Server Configuration.
+ *
+ * @author Josh Cummings
+ */
+@EnableWebSecurity
+public class OAuth2ResourceServerSecurityConfiguration extends WebSecurityConfigurerAdapter {
+
+	@Value("${spring.security.oauth2.resourceserver.jwt.key-value}")
+	RSAPublicKey key;
+
+	@Override
+	protected void configure(HttpSecurity http) throws Exception {
+		// @formatter:off
+		http
+			.authorizeRequests((requests) -> requests
+					.mvcMatchers("/message/**").hasAuthority("SCOPE_message:read")
+					.anyRequest().authenticated()
+			)
+			.oauth2ResourceServer((resourceServer) -> resourceServer
+					.jwt((jwt) -> jwt
+							.decoder(jwtDecoder())
+					)
+			);
+		// @formatter:on
+	}
+
+	@Bean
+	JwtDecoder jwtDecoder() {
+		return NimbusJwtDecoder.withPublicKey(this.key).build();
+	}
+
+}

servlet/spring-boot/java/oauth2/resource-server/static/src/main/resources/application.yml

@@ -0,0 +1,6 @@
+spring:
+  security:
+    oauth2:
+      resourceserver:
+        jwt:
+          key-value: classpath:simple.pub

servlet/spring-boot/java/oauth2/resource-server/static/src/main/resources/simple.pub

@@ -0,0 +1,7 @@
+-----BEGIN PUBLIC KEY-----
+MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDdlatRjRjogo3WojgGHFHYLugd
+UWAY9iR3fy4arWNA1KoS8kVw33cJibXr8bvwUAUparCwlvdbH6dvEOfou0/gCFQs
+HUfQrSDv+MuSUMAe8jzKE4qW+jK+xQU9a03GUnKHkkle+Q0pX/g6jXZ7r1/xAK5D
+o2kQ+X5xK9cipRgEKwIDAQAB
+-----END PUBLIC KEY-----
+

settings.gradle

@@ -33,5 +33,7 @@ include ":servlet:spring-boot:java:oauth2:login"
 include ":servlet:spring-boot:java:oauth2:resource-server:hello-security"
 include ":servlet:spring-boot:java:oauth2:resource-server:jwe"
 include ":servlet:spring-boot:java:oauth2:resource-server:opaque"
+include ":servlet:spring-boot:java:oauth2:resource-server:static"
 include ":servlet:spring-boot:java:oauth2:webclient"
 include ":servlet:spring-boot:kotlin:hello-security"
+