diff --git a/anwendung/.idea/jsLibraryMappings.xml b/anwendung/.idea/jsLibraryMappings.xml
new file mode 100644
index 0000000..d23208f
--- /dev/null
+++ b/anwendung/.idea/jsLibraryMappings.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="JavaScriptLibraryMappings">
+    <includedPredefinedLibrary name="Node.js Core" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/anwendung/src/pages/index.js b/anwendung/src/pages/index.js
index d45797d..b798661 100644
--- a/anwendung/src/pages/index.js
+++ b/anwendung/src/pages/index.js
@@ -14,13 +14,19 @@ const inter = Inter({subsets: ['latin']})
 export default function Home(p) {
 
 
+    const url = "http://localhost:8080/weeks"
+
 
     return (
 
         <>
             <div style={{height: 50}}></div>
             <CalenderView/>
-
+            <Button onClick={() => {
+                fetch(url + "?id=1", {method: "GET"}).then(response => response.json()).then(json => {
+                    console.log(json.days[1].text)
+                });
+            }} text={"Fetch"}/>
         </>
 
     )
diff --git a/backend/.gitignore b/backend/.gitignore
new file mode 100644
index 0000000..549e00a
--- /dev/null
+++ b/backend/.gitignore
@@ -0,0 +1,33 @@
+HELP.md
+target/
+!.mvn/wrapper/maven-wrapper.jar
+!**/src/main/**/target/
+!**/src/test/**/target/
+
+### STS ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+
+### IntelliJ IDEA ###
+.idea
+*.iws
+*.iml
+*.ipr
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+build/
+!**/src/main/**/build/
+!**/src/test/**/build/
+
+### VS Code ###
+.vscode/
diff --git a/backend/.mvn/wrapper/maven-wrapper.jar b/backend/.mvn/wrapper/maven-wrapper.jar
new file mode 100644
index 0000000..bf82ff0
Binary files /dev/null and b/backend/.mvn/wrapper/maven-wrapper.jar differ
diff --git a/backend/.mvn/wrapper/maven-wrapper.properties b/backend/.mvn/wrapper/maven-wrapper.properties
new file mode 100644
index 0000000..ca5ab4b
--- /dev/null
+++ b/backend/.mvn/wrapper/maven-wrapper.properties
@@ -0,0 +1,18 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you 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.
+distributionUrl=https://repo.maven.apache.org/maven2/org/apache/maven/apache-maven/3.8.7/apache-maven-3.8.7-bin.zip
+wrapperUrl=https://repo.maven.apache.org/maven2/org/apache/maven/wrapper/maven-wrapper/3.1.1/maven-wrapper-3.1.1.jar
diff --git a/backend/database.mv.db b/backend/database.mv.db
new file mode 100644
index 0000000..c3c4c33
Binary files /dev/null and b/backend/database.mv.db differ
diff --git a/backend/database.trace.db b/backend/database.trace.db
new file mode 100644
index 0000000..bc23311
--- /dev/null
+++ b/backend/database.trace.db
@@ -0,0 +1,116 @@
+2023-05-08 00:57:29 database: flush
+org.h2.message.DbException: Allgemeiner Fehler: "org.h2.mvstore.MVStoreException: The file is locked: D:/DH/TIF22A_AnwProjekt_B/backend/database.mv.db [2.1.214/7]"
+General error: "org.h2.mvstore.MVStoreException: The file is locked: D:/DH/TIF22A_AnwProjekt_B/backend/database.mv.db [2.1.214/7]" [50000-214]
+	at org.h2.message.DbException.get(DbException.java:212)
+	at org.h2.message.DbException.convert(DbException.java:395)
+	at org.h2.mvstore.db.Store.lambda$new$0(Store.java:125)
+	at org.h2.mvstore.MVStore.handleException(MVStore.java:3318)
+	at org.h2.mvstore.MVStore.panic(MVStore.java:593)
+	at org.h2.mvstore.MVStore.<init>(MVStore.java:469)
+	at org.h2.mvstore.MVStore$Builder.open(MVStore.java:4082)
+	at org.h2.mvstore.db.Store.<init>(Store.java:136)
+	at org.h2.engine.Database.<init>(Database.java:324)
+	at org.h2.engine.Engine.openSession(Engine.java:92)
+	at org.h2.engine.Engine.openSession(Engine.java:222)
+	at org.h2.engine.Engine.createSession(Engine.java:201)
+	at org.h2.engine.SessionRemote.connectEmbeddedOrServer(SessionRemote.java:338)
+	at org.h2.jdbc.JdbcConnection.<init>(JdbcConnection.java:122)
+	at org.h2.Driver.connect(Driver.java:59)
+	at java.sql/java.sql.DriverManager.getConnection(DriverManager.java:683)
+	at java.sql/java.sql.DriverManager.getConnection(DriverManager.java:230)
+	at com.example.backend.anwprj.DataBaseHandler.<init>(DataBaseHandler.java:26)
+	at com.example.backend.anwprj.DataBaseHandler.getInstance(DataBaseHandler.java:13)
+	at com.example.backend.anwprj.controller.UserController.<init>(UserController.java:16)
+	at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:67)
+	at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
+	at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:484)
+	at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:198)
+	at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:87)
+	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:1308)
+	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1199)
+	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:560)
+	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:520)
+	at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:326)
+	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234)
+	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:324)
+	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:200)
+	at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:973)
+	at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:917)
+	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:584)
+	at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:146)
+	at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:732)
+	at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:434)
+	at org.springframework.boot.SpringApplication.run(SpringApplication.java:310)
+	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1304)
+	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1293)
+	at com.example.backend.BackendApplication.main(BackendApplication.java:12)
+Caused by: org.h2.jdbc.JdbcSQLNonTransientException: Allgemeiner Fehler: "org.h2.mvstore.MVStoreException: The file is locked: D:/DH/TIF22A_AnwProjekt_B/backend/database.mv.db [2.1.214/7]"
+General error: "org.h2.mvstore.MVStoreException: The file is locked: D:/DH/TIF22A_AnwProjekt_B/backend/database.mv.db [2.1.214/7]" [50000-214]
+	at org.h2.message.DbException.getJdbcSQLException(DbException.java:554)
+	at org.h2.message.DbException.getJdbcSQLException(DbException.java:477)
+	... 43 more
+Caused by: org.h2.mvstore.MVStoreException: The file is locked: D:/DH/TIF22A_AnwProjekt_B/backend/database.mv.db [2.1.214/7]
+	at org.h2.mvstore.DataUtils.newMVStoreException(DataUtils.java:1004)
+	at org.h2.mvstore.FileStore.open(FileStore.java:178)
+	at org.h2.mvstore.FileStore.open(FileStore.java:128)
+	at org.h2.mvstore.MVStore.<init>(MVStore.java:452)
+	... 37 more
+2023-05-08 01:00:06 jdbc[3]: exception
+org.h2.jdbc.JdbcSQLSyntaxErrorException: Feld "permissions" nicht gefunden
+Column "permissions" not found [42122-214]
+	at org.h2.message.DbException.getJdbcSQLException(DbException.java:502)
+	at org.h2.message.DbException.getJdbcSQLException(DbException.java:477)
+	at org.h2.message.DbException.get(DbException.java:223)
+	at org.h2.message.DbException.get(DbException.java:199)
+	at org.h2.jdbc.JdbcResultSet.getColumnIndex(JdbcResultSet.java:3492)
+	at org.h2.jdbc.JdbcResultSet.getInt(JdbcResultSet.java:337)
+	at com.example.backend.anwprj.DataBaseHandler.findUser(DataBaseHandler.java:48)
+	at com.example.backend.anwprj.controller.UserController.getUser(UserController.java:36)
+	at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104)
+	at java.base/java.lang.reflect.Method.invoke(Method.java:578)
+	at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:207)
+	at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:152)
+	at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:118)
+	at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:884)
+	at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:797)
+	at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87)
+	at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1081)
+	at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:974)
+	at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1011)
+	at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:903)
+	at jakarta.servlet.http.HttpServlet.service(HttpServlet.java:564)
+	at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:885)
+	at jakarta.servlet.http.HttpServlet.service(HttpServlet.java:658)
+	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:205)
+	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:149)
+	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51)
+	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:174)
+	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:149)
+	at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100)
+	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116)
+	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:174)
+	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:149)
+	at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93)
+	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116)
+	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:174)
+	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:149)
+	at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201)
+	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116)
+	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:174)
+	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:149)
+	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:166)
+	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:90)
+	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:482)
+	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:115)
+	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:93)
+	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74)
+	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:341)
+	at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:390)
+	at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:63)
+	at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:894)
+	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1741)
+	at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:52)
+	at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191)
+	at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659)
+	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
+	at java.base/java.lang.Thread.run(Thread.java:1623)
diff --git a/backend/mvnw b/backend/mvnw
new file mode 100644
index 0000000..8a8fb22
--- /dev/null
+++ b/backend/mvnw
@@ -0,0 +1,316 @@
+#!/bin/sh
+# ----------------------------------------------------------------------------
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#    https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+# ----------------------------------------------------------------------------
+
+# ----------------------------------------------------------------------------
+# Maven Start Up Batch script
+#
+# Required ENV vars:
+# ------------------
+#   JAVA_HOME - location of a JDK home dir
+#
+# Optional ENV vars
+# -----------------
+#   M2_HOME - location of maven2's installed home dir
+#   MAVEN_OPTS - parameters passed to the Java VM when running Maven
+#     e.g. to debug Maven itself, use
+#       set MAVEN_OPTS=-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=8000
+#   MAVEN_SKIP_RC - flag to disable loading of mavenrc files
+# ----------------------------------------------------------------------------
+
+if [ -z "$MAVEN_SKIP_RC" ] ; then
+
+  if [ -f /usr/local/etc/mavenrc ] ; then
+    . /usr/local/etc/mavenrc
+  fi
+
+  if [ -f /etc/mavenrc ] ; then
+    . /etc/mavenrc
+  fi
+
+  if [ -f "$HOME/.mavenrc" ] ; then
+    . "$HOME/.mavenrc"
+  fi
+
+fi
+
+# OS specific support.  $var _must_ be set to either true or false.
+cygwin=false;
+darwin=false;
+mingw=false
+case "`uname`" in
+  CYGWIN*) cygwin=true ;;
+  MINGW*) mingw=true;;
+  Darwin*) darwin=true
+    # Use /usr/libexec/java_home if available, otherwise fall back to /Library/Java/Home
+    # See https://developer.apple.com/library/mac/qa/qa1170/_index.html
+    if [ -z "$JAVA_HOME" ]; then
+      if [ -x "/usr/libexec/java_home" ]; then
+        export JAVA_HOME="`/usr/libexec/java_home`"
+      else
+        export JAVA_HOME="/Library/Java/Home"
+      fi
+    fi
+    ;;
+esac
+
+if [ -z "$JAVA_HOME" ] ; then
+  if [ -r /etc/gentoo-release ] ; then
+    JAVA_HOME=`java-config --jre-home`
+  fi
+fi
+
+if [ -z "$M2_HOME" ] ; then
+  ## resolve links - $0 may be a link to maven's home
+  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"`/$link"
+    fi
+  done
+
+  saveddir=`pwd`
+
+  M2_HOME=`dirname "$PRG"`/..
+
+  # make it fully qualified
+  M2_HOME=`cd "$M2_HOME" && pwd`
+
+  cd "$saveddir"
+  # echo Using m2 at $M2_HOME
+fi
+
+# For Cygwin, ensure paths are in UNIX format before anything is touched
+if $cygwin ; then
+  [ -n "$M2_HOME" ] &&
+    M2_HOME=`cygpath --unix "$M2_HOME"`
+  [ -n "$JAVA_HOME" ] &&
+    JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
+  [ -n "$CLASSPATH" ] &&
+    CLASSPATH=`cygpath --path --unix "$CLASSPATH"`
+fi
+
+# For Mingw, ensure paths are in UNIX format before anything is touched
+if $mingw ; then
+  [ -n "$M2_HOME" ] &&
+    M2_HOME="`(cd "$M2_HOME"; pwd)`"
+  [ -n "$JAVA_HOME" ] &&
+    JAVA_HOME="`(cd "$JAVA_HOME"; pwd)`"
+fi
+
+if [ -z "$JAVA_HOME" ]; then
+  javaExecutable="`which javac`"
+  if [ -n "$javaExecutable" ] && ! [ "`expr \"$javaExecutable\" : '\([^ ]*\)'`" = "no" ]; then
+    # readlink(1) is not available as standard on Solaris 10.
+    readLink=`which readlink`
+    if [ ! `expr "$readLink" : '\([^ ]*\)'` = "no" ]; then
+      if $darwin ; then
+        javaHome="`dirname \"$javaExecutable\"`"
+        javaExecutable="`cd \"$javaHome\" && pwd -P`/javac"
+      else
+        javaExecutable="`readlink -f \"$javaExecutable\"`"
+      fi
+      javaHome="`dirname \"$javaExecutable\"`"
+      javaHome=`expr "$javaHome" : '\(.*\)/bin'`
+      JAVA_HOME="$javaHome"
+      export JAVA_HOME
+    fi
+  fi
+fi
+
+if [ -z "$JAVACMD" ] ; then
+  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
+  else
+    JAVACMD="`\\unset -f command; \\command -v java`"
+  fi
+fi
+
+if [ ! -x "$JAVACMD" ] ; then
+  echo "Error: JAVA_HOME is not defined correctly." >&2
+  echo "  We cannot execute $JAVACMD" >&2
+  exit 1
+fi
+
+if [ -z "$JAVA_HOME" ] ; then
+  echo "Warning: JAVA_HOME environment variable is not set."
+fi
+
+CLASSWORLDS_LAUNCHER=org.codehaus.plexus.classworlds.launcher.Launcher
+
+# traverses directory structure from process work directory to filesystem root
+# first directory with .mvn subdirectory is considered project base directory
+find_maven_basedir() {
+
+  if [ -z "$1" ]
+  then
+    echo "Path not specified to find_maven_basedir"
+    return 1
+  fi
+
+  basedir="$1"
+  wdir="$1"
+  while [ "$wdir" != '/' ] ; do
+    if [ -d "$wdir"/.mvn ] ; then
+      basedir=$wdir
+      break
+    fi
+    # workaround for JBEAP-8937 (on Solaris 10/Sparc)
+    if [ -d "${wdir}" ]; then
+      wdir=`cd "$wdir/.."; pwd`
+    fi
+    # end of workaround
+  done
+  echo "${basedir}"
+}
+
+# concatenates all lines of a file
+concat_lines() {
+  if [ -f "$1" ]; then
+    echo "$(tr -s '\n' ' ' < "$1")"
+  fi
+}
+
+BASE_DIR=`find_maven_basedir "$(pwd)"`
+if [ -z "$BASE_DIR" ]; then
+  exit 1;
+fi
+
+##########################################################################################
+# Extension to allow automatically downloading the maven-wrapper.jar from Maven-central
+# This allows using the maven wrapper in projects that prohibit checking in binary data.
+##########################################################################################
+if [ -r "$BASE_DIR/.mvn/wrapper/maven-wrapper.jar" ]; then
+    if [ "$MVNW_VERBOSE" = true ]; then
+      echo "Found .mvn/wrapper/maven-wrapper.jar"
+    fi
+else
+    if [ "$MVNW_VERBOSE" = true ]; then
+      echo "Couldn't find .mvn/wrapper/maven-wrapper.jar, downloading it ..."
+    fi
+    if [ -n "$MVNW_REPOURL" ]; then
+      jarUrl="$MVNW_REPOURL/org/apache/maven/wrapper/maven-wrapper/3.1.0/maven-wrapper-3.1.0.jar"
+    else
+      jarUrl="https://repo.maven.apache.org/maven2/org/apache/maven/wrapper/maven-wrapper/3.1.0/maven-wrapper-3.1.0.jar"
+    fi
+    while IFS="=" read key value; do
+      case "$key" in (wrapperUrl) jarUrl="$value"; break ;;
+      esac
+    done < "$BASE_DIR/.mvn/wrapper/maven-wrapper.properties"
+    if [ "$MVNW_VERBOSE" = true ]; then
+      echo "Downloading from: $jarUrl"
+    fi
+    wrapperJarPath="$BASE_DIR/.mvn/wrapper/maven-wrapper.jar"
+    if $cygwin; then
+      wrapperJarPath=`cygpath --path --windows "$wrapperJarPath"`
+    fi
+
+    if command -v wget > /dev/null; then
+        if [ "$MVNW_VERBOSE" = true ]; then
+          echo "Found wget ... using wget"
+        fi
+        if [ -z "$MVNW_USERNAME" ] || [ -z "$MVNW_PASSWORD" ]; then
+            wget "$jarUrl" -O "$wrapperJarPath" || rm -f "$wrapperJarPath"
+        else
+            wget --http-user=$MVNW_USERNAME --http-password=$MVNW_PASSWORD "$jarUrl" -O "$wrapperJarPath" || rm -f "$wrapperJarPath"
+        fi
+    elif command -v curl > /dev/null; then
+        if [ "$MVNW_VERBOSE" = true ]; then
+          echo "Found curl ... using curl"
+        fi
+        if [ -z "$MVNW_USERNAME" ] || [ -z "$MVNW_PASSWORD" ]; then
+            curl -o "$wrapperJarPath" "$jarUrl" -f
+        else
+            curl --user $MVNW_USERNAME:$MVNW_PASSWORD -o "$wrapperJarPath" "$jarUrl" -f
+        fi
+
+    else
+        if [ "$MVNW_VERBOSE" = true ]; then
+          echo "Falling back to using Java to download"
+        fi
+        javaClass="$BASE_DIR/.mvn/wrapper/MavenWrapperDownloader.java"
+        # For Cygwin, switch paths to Windows format before running javac
+        if $cygwin; then
+          javaClass=`cygpath --path --windows "$javaClass"`
+        fi
+        if [ -e "$javaClass" ]; then
+            if [ ! -e "$BASE_DIR/.mvn/wrapper/MavenWrapperDownloader.class" ]; then
+                if [ "$MVNW_VERBOSE" = true ]; then
+                  echo " - Compiling MavenWrapperDownloader.java ..."
+                fi
+                # Compiling the Java class
+                ("$JAVA_HOME/bin/javac" "$javaClass")
+            fi
+            if [ -e "$BASE_DIR/.mvn/wrapper/MavenWrapperDownloader.class" ]; then
+                # Running the downloader
+                if [ "$MVNW_VERBOSE" = true ]; then
+                  echo " - Running MavenWrapperDownloader.java ..."
+                fi
+                ("$JAVA_HOME/bin/java" -cp .mvn/wrapper MavenWrapperDownloader "$MAVEN_PROJECTBASEDIR")
+            fi
+        fi
+    fi
+fi
+##########################################################################################
+# End of extension
+##########################################################################################
+
+export MAVEN_PROJECTBASEDIR=${MAVEN_BASEDIR:-"$BASE_DIR"}
+if [ "$MVNW_VERBOSE" = true ]; then
+  echo $MAVEN_PROJECTBASEDIR
+fi
+MAVEN_OPTS="$(concat_lines "$MAVEN_PROJECTBASEDIR/.mvn/jvm.config") $MAVEN_OPTS"
+
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin; then
+  [ -n "$M2_HOME" ] &&
+    M2_HOME=`cygpath --path --windows "$M2_HOME"`
+  [ -n "$JAVA_HOME" ] &&
+    JAVA_HOME=`cygpath --path --windows "$JAVA_HOME"`
+  [ -n "$CLASSPATH" ] &&
+    CLASSPATH=`cygpath --path --windows "$CLASSPATH"`
+  [ -n "$MAVEN_PROJECTBASEDIR" ] &&
+    MAVEN_PROJECTBASEDIR=`cygpath --path --windows "$MAVEN_PROJECTBASEDIR"`
+fi
+
+# Provide a "standardized" way to retrieve the CLI args that will
+# work with both Windows and non-Windows executions.
+MAVEN_CMD_LINE_ARGS="$MAVEN_CONFIG $@"
+export MAVEN_CMD_LINE_ARGS
+
+WRAPPER_LAUNCHER=org.apache.maven.wrapper.MavenWrapperMain
+
+exec "$JAVACMD" \
+  $MAVEN_OPTS \
+  $MAVEN_DEBUG_OPTS \
+  -classpath "$MAVEN_PROJECTBASEDIR/.mvn/wrapper/maven-wrapper.jar" \
+  "-Dmaven.home=${M2_HOME}" \
+  "-Dmaven.multiModuleProjectDirectory=${MAVEN_PROJECTBASEDIR}" \
+  ${WRAPPER_LAUNCHER} $MAVEN_CONFIG "$@"
diff --git a/backend/mvnw.cmd b/backend/mvnw.cmd
new file mode 100644
index 0000000..1d8ab01
--- /dev/null
+++ b/backend/mvnw.cmd
@@ -0,0 +1,188 @@
+@REM ----------------------------------------------------------------------------
+@REM Licensed to the Apache Software Foundation (ASF) under one
+@REM or more contributor license agreements.  See the NOTICE file
+@REM distributed with this work for additional information
+@REM regarding copyright ownership.  The ASF licenses this file
+@REM to you under the Apache License, Version 2.0 (the
+@REM "License"); you may not use this file except in compliance
+@REM with the License.  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,
+@REM software distributed under the License is distributed on an
+@REM "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+@REM KIND, either express or implied.  See the License for the
+@REM specific language governing permissions and limitations
+@REM under the License.
+@REM ----------------------------------------------------------------------------
+
+@REM ----------------------------------------------------------------------------
+@REM Maven Start Up Batch script
+@REM
+@REM Required ENV vars:
+@REM JAVA_HOME - location of a JDK home dir
+@REM
+@REM Optional ENV vars
+@REM M2_HOME - location of maven2's installed home dir
+@REM MAVEN_BATCH_ECHO - set to 'on' to enable the echoing of the batch commands
+@REM MAVEN_BATCH_PAUSE - set to 'on' to wait for a keystroke before ending
+@REM MAVEN_OPTS - parameters passed to the Java VM when running Maven
+@REM     e.g. to debug Maven itself, use
+@REM set MAVEN_OPTS=-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=8000
+@REM MAVEN_SKIP_RC - flag to disable loading of mavenrc files
+@REM ----------------------------------------------------------------------------
+
+@REM Begin all REM lines with '@' in case MAVEN_BATCH_ECHO is 'on'
+@echo off
+@REM set title of command window
+title %0
+@REM enable echoing by setting MAVEN_BATCH_ECHO to 'on'
+@if "%MAVEN_BATCH_ECHO%" == "on"  echo %MAVEN_BATCH_ECHO%
+
+@REM set %HOME% to equivalent of $HOME
+if "%HOME%" == "" (set "HOME=%HOMEDRIVE%%HOMEPATH%")
+
+@REM Execute a user defined script before this one
+if not "%MAVEN_SKIP_RC%" == "" goto skipRcPre
+@REM check for pre script, once with legacy .bat ending and once with .cmd ending
+if exist "%USERPROFILE%\mavenrc_pre.bat" call "%USERPROFILE%\mavenrc_pre.bat" %*
+if exist "%USERPROFILE%\mavenrc_pre.cmd" call "%USERPROFILE%\mavenrc_pre.cmd" %*
+:skipRcPre
+
+@setlocal
+
+set ERROR_CODE=0
+
+@REM To isolate internal variables from possible post scripts, we use another setlocal
+@setlocal
+
+@REM ==== START VALIDATION ====
+if not "%JAVA_HOME%" == "" goto OkJHome
+
+echo.
+echo Error: JAVA_HOME not found in your environment. >&2
+echo Please set the JAVA_HOME variable in your environment to match the >&2
+echo location of your Java installation. >&2
+echo.
+goto error
+
+:OkJHome
+if exist "%JAVA_HOME%\bin\java.exe" goto init
+
+echo.
+echo Error: JAVA_HOME is set to an invalid directory. >&2
+echo JAVA_HOME = "%JAVA_HOME%" >&2
+echo Please set the JAVA_HOME variable in your environment to match the >&2
+echo location of your Java installation. >&2
+echo.
+goto error
+
+@REM ==== END VALIDATION ====
+
+:init
+
+@REM Find the project base dir, i.e. the directory that contains the folder ".mvn".
+@REM Fallback to current working directory if not found.
+
+set MAVEN_PROJECTBASEDIR=%MAVEN_BASEDIR%
+IF NOT "%MAVEN_PROJECTBASEDIR%"=="" goto endDetectBaseDir
+
+set EXEC_DIR=%CD%
+set WDIR=%EXEC_DIR%
+:findBaseDir
+IF EXIST "%WDIR%"\.mvn goto baseDirFound
+cd ..
+IF "%WDIR%"=="%CD%" goto baseDirNotFound
+set WDIR=%CD%
+goto findBaseDir
+
+:baseDirFound
+set MAVEN_PROJECTBASEDIR=%WDIR%
+cd "%EXEC_DIR%"
+goto endDetectBaseDir
+
+:baseDirNotFound
+set MAVEN_PROJECTBASEDIR=%EXEC_DIR%
+cd "%EXEC_DIR%"
+
+:endDetectBaseDir
+
+IF NOT EXIST "%MAVEN_PROJECTBASEDIR%\.mvn\jvm.config" goto endReadAdditionalConfig
+
+@setlocal EnableExtensions EnableDelayedExpansion
+for /F "usebackq delims=" %%a in ("%MAVEN_PROJECTBASEDIR%\.mvn\jvm.config") do set JVM_CONFIG_MAVEN_PROPS=!JVM_CONFIG_MAVEN_PROPS! %%a
+@endlocal & set JVM_CONFIG_MAVEN_PROPS=%JVM_CONFIG_MAVEN_PROPS%
+
+:endReadAdditionalConfig
+
+SET MAVEN_JAVA_EXE="%JAVA_HOME%\bin\java.exe"
+set WRAPPER_JAR="%MAVEN_PROJECTBASEDIR%\.mvn\wrapper\maven-wrapper.jar"
+set WRAPPER_LAUNCHER=org.apache.maven.wrapper.MavenWrapperMain
+
+set DOWNLOAD_URL="https://repo.maven.apache.org/maven2/org/apache/maven/wrapper/maven-wrapper/3.1.0/maven-wrapper-3.1.0.jar"
+
+FOR /F "usebackq tokens=1,2 delims==" %%A IN ("%MAVEN_PROJECTBASEDIR%\.mvn\wrapper\maven-wrapper.properties") DO (
+    IF "%%A"=="wrapperUrl" SET DOWNLOAD_URL=%%B
+)
+
+@REM Extension to allow automatically downloading the maven-wrapper.jar from Maven-central
+@REM This allows using the maven wrapper in projects that prohibit checking in binary data.
+if exist %WRAPPER_JAR% (
+    if "%MVNW_VERBOSE%" == "true" (
+        echo Found %WRAPPER_JAR%
+    )
+) else (
+    if not "%MVNW_REPOURL%" == "" (
+        SET DOWNLOAD_URL="%MVNW_REPOURL%/org/apache/maven/wrapper/maven-wrapper/3.1.0/maven-wrapper-3.1.0.jar"
+    )
+    if "%MVNW_VERBOSE%" == "true" (
+        echo Couldn't find %WRAPPER_JAR%, downloading it ...
+        echo Downloading from: %DOWNLOAD_URL%
+    )
+
+    powershell -Command "&{"^
+		"$webclient = new-object System.Net.WebClient;"^
+		"if (-not ([string]::IsNullOrEmpty('%MVNW_USERNAME%') -and [string]::IsNullOrEmpty('%MVNW_PASSWORD%'))) {"^
+		"$webclient.Credentials = new-object System.Net.NetworkCredential('%MVNW_USERNAME%', '%MVNW_PASSWORD%');"^
+		"}"^
+		"[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12; $webclient.DownloadFile('%DOWNLOAD_URL%', '%WRAPPER_JAR%')"^
+		"}"
+    if "%MVNW_VERBOSE%" == "true" (
+        echo Finished downloading %WRAPPER_JAR%
+    )
+)
+@REM End of extension
+
+@REM Provide a "standardized" way to retrieve the CLI args that will
+@REM work with both Windows and non-Windows executions.
+set MAVEN_CMD_LINE_ARGS=%*
+
+%MAVEN_JAVA_EXE% ^
+  %JVM_CONFIG_MAVEN_PROPS% ^
+  %MAVEN_OPTS% ^
+  %MAVEN_DEBUG_OPTS% ^
+  -classpath %WRAPPER_JAR% ^
+  "-Dmaven.multiModuleProjectDirectory=%MAVEN_PROJECTBASEDIR%" ^
+  %WRAPPER_LAUNCHER% %MAVEN_CONFIG% %*
+if ERRORLEVEL 1 goto error
+goto end
+
+:error
+set ERROR_CODE=1
+
+:end
+@endlocal & set ERROR_CODE=%ERROR_CODE%
+
+if not "%MAVEN_SKIP_RC%"=="" goto skipRcPost
+@REM check for post script, once with legacy .bat ending and once with .cmd ending
+if exist "%USERPROFILE%\mavenrc_post.bat" call "%USERPROFILE%\mavenrc_post.bat"
+if exist "%USERPROFILE%\mavenrc_post.cmd" call "%USERPROFILE%\mavenrc_post.cmd"
+:skipRcPost
+
+@REM pause the script if MAVEN_BATCH_PAUSE is set to 'on'
+if "%MAVEN_BATCH_PAUSE%"=="on" pause
+
+if "%MAVEN_TERMINATE_CMD%"=="on" exit %ERROR_CODE%
+
+cmd /C exit /B %ERROR_CODE%
diff --git a/backend/pom.xml b/backend/pom.xml
new file mode 100644
index 0000000..d195fb8
--- /dev/null
+++ b/backend/pom.xml
@@ -0,0 +1,41 @@
+<?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>org.springframework.boot</groupId>
+        <artifactId>spring-boot-starter-parent</artifactId>
+        <version>3.0.6</version>
+        <relativePath/> <!-- lookup parent from repository -->
+    </parent>
+    <groupId>com.example</groupId>
+    <artifactId>backend</artifactId>
+    <version>0.0.1-SNAPSHOT</version>
+    <name>backend</name>
+    <description>backend</description>
+    <properties>
+        <java.version>17</java.version>
+    </properties>
+    <dependencies>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-web</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-test</artifactId>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.springframework.boot</groupId>
+                <artifactId>spring-boot-maven-plugin</artifactId>
+            </plugin>
+        </plugins>
+    </build>
+
+</project>
diff --git a/backend/src/main/java/com/example/backend/BackendApplication.java b/backend/src/main/java/com/example/backend/BackendApplication.java
new file mode 100644
index 0000000..648f827
--- /dev/null
+++ b/backend/src/main/java/com/example/backend/BackendApplication.java
@@ -0,0 +1,15 @@
+package com.example.backend;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class BackendApplication
+{
+
+    public static void main(String[] args)
+    {
+        SpringApplication.run(BackendApplication.class, args);
+    }
+
+}
diff --git a/backend/src/main/java/com/example/backend/anwprj/DataBaseHandler.java b/backend/src/main/java/com/example/backend/anwprj/DataBaseHandler.java
new file mode 100644
index 0000000..1222c9c
--- /dev/null
+++ b/backend/src/main/java/com/example/backend/anwprj/DataBaseHandler.java
@@ -0,0 +1,79 @@
+package com.example.backend.anwprj;
+
+import com.example.backend.anwprj.Users.User;
+
+import java.sql.*;
+
+public class DataBaseHandler
+{
+    private static DataBaseHandler instance = null;
+
+    public static DataBaseHandler getInstance()
+    {
+        if (instance == null)
+        {
+            instance = new DataBaseHandler();
+        }
+
+        return instance;
+    }
+
+    private Connection connection;
+    private Statement st;
+
+    public DataBaseHandler()
+    {
+        try
+        {
+            connection = DriverManager.getConnection("jdbc:h2:./database", "adm", "12345");
+            st = connection.createStatement();
+        } catch (SQLException e)
+        {
+            throw new RuntimeException(e);
+        }
+    }
+
+    public User findUser(String mail, String password)
+    {
+
+        try
+        {
+            ResultSet rs = st.executeQuery("select * from users where mail = '" + mail + "' and password = '" + password + "'");
+            if (rs.next())
+            {
+                return new User(
+                        rs.getInt("id"),
+                        rs.getString("firstname"),
+                        rs.getString("lastname"),
+                        rs.getString("mail"),
+                        rs.getString("password"),
+                        rs.getInt("permission")
+                );
+            }
+        } catch (Exception e)
+        {
+            e.printStackTrace();
+        }
+
+        return null;
+    }
+
+    public boolean addUser(User user)
+    {
+        if (user.getMail() == null || user.getPassword() == null)
+        {
+            return false;
+        }
+
+        try
+        {
+            st.executeUpdate("insert into users (firstname, lastname, mail, password, permission) values (" + "'" + user.getFirstName() + "', '" + user.getLastName() + "', '" + user.getMail() + "', '" + user.getPassword() + "', " + user.getPermissions() + ")");
+        } catch (SQLException e)
+        {
+            e.printStackTrace();
+            return false;
+        }
+
+        return true;
+    }
+}
diff --git a/backend/src/main/java/com/example/backend/anwprj/Users/User.java b/backend/src/main/java/com/example/backend/anwprj/Users/User.java
new file mode 100644
index 0000000..7f573db
--- /dev/null
+++ b/backend/src/main/java/com/example/backend/anwprj/Users/User.java
@@ -0,0 +1,51 @@
+package com.example.backend.anwprj.Users;
+
+public class User
+{
+    private int id;
+    private String firstName;
+    private String lastName;
+    private String mail;
+    private String password;
+    private int permissions;
+
+    public User(int id, String firstName, String lastName, String mail, String password, int permissions)
+    {
+        this.id = id;
+        this.firstName = firstName;
+        this.lastName = lastName;
+        this.mail = mail;
+        this.password = password;
+        this.permissions = permissions;
+    }
+
+    public int getId()
+    {
+        return id;
+    }
+
+    public String getFirstName()
+    {
+        return firstName;
+    }
+
+    public String getLastName()
+    {
+        return lastName;
+    }
+
+    public String getMail()
+    {
+        return mail;
+    }
+
+    public String getPassword()
+    {
+        return password;
+    }
+
+    public int getPermissions()
+    {
+        return permissions;
+    }
+}
diff --git a/backend/src/main/java/com/example/backend/anwprj/Users/UserPermissions.java b/backend/src/main/java/com/example/backend/anwprj/Users/UserPermissions.java
new file mode 100644
index 0000000..017fcab
--- /dev/null
+++ b/backend/src/main/java/com/example/backend/anwprj/Users/UserPermissions.java
@@ -0,0 +1,19 @@
+package com.example.backend.anwprj.Users;
+
+public enum UserPermissions
+{
+    self(0),
+    admin(1);
+
+    private final int value;
+
+    public int getValue()
+    {
+        return value;
+    }
+
+    private UserPermissions(int value)
+    {
+        this.value = value;
+    }
+}
diff --git a/backend/src/main/java/com/example/backend/anwprj/Users/UserSessionIDHandler.java b/backend/src/main/java/com/example/backend/anwprj/Users/UserSessionIDHandler.java
new file mode 100644
index 0000000..972a9ed
--- /dev/null
+++ b/backend/src/main/java/com/example/backend/anwprj/Users/UserSessionIDHandler.java
@@ -0,0 +1,28 @@
+package com.example.backend.anwprj.Users;
+
+import com.example.backend.anwprj.DataBaseHandler;
+
+import java.nio.charset.StandardCharsets;
+import java.util.HashMap;
+import java.util.Random;
+
+public class UserSessionIDHandler
+{
+    public static HashMap<String, User> mapping = new HashMap<>();
+
+    public static String addUser(String mail, String password)
+    {
+        User user = DataBaseHandler.getInstance().findUser(mail, password);
+
+        if(user != null)
+        {
+            byte[] array = new byte[30]; // length is bounded by 7
+            new Random().nextBytes(array);
+            String generatedString = new String(array, StandardCharsets.UTF_8);
+            mapping.put(generatedString, user);
+            return generatedString;
+        }
+
+        return "";
+    }
+}
diff --git a/backend/src/main/java/com/example/backend/anwprj/controller/UserController.java b/backend/src/main/java/com/example/backend/anwprj/controller/UserController.java
new file mode 100644
index 0000000..d7ba266
--- /dev/null
+++ b/backend/src/main/java/com/example/backend/anwprj/controller/UserController.java
@@ -0,0 +1,40 @@
+package com.example.backend.anwprj.controller;
+
+import com.example.backend.anwprj.DataBaseHandler;
+import com.example.backend.anwprj.Users.User;
+import com.example.backend.anwprj.Users.UserSessionIDHandler;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.*;
+
+@RestController
+public class UserController
+{
+    private DataBaseHandler db;
+
+    {
+        db = DataBaseHandler.getInstance();
+    }
+
+
+    @CrossOrigin
+    @PostMapping("/users")
+    public ResponseEntity<String> addUser(@RequestBody User user)
+    {
+        if(db.addUser(user))
+        {
+            return new ResponseEntity<String>(UserSessionIDHandler.addUser(user.getMail(), user.getPassword()), HttpStatus.OK);
+        }
+
+        return new ResponseEntity<String>("", HttpStatus.BAD_REQUEST);
+    }
+
+    @CrossOrigin
+    @GetMapping("/users")
+    public ResponseEntity<String> login(@RequestParam(name="mail") String mail, @RequestParam(name="password") String password)
+    {
+        String sessionID = UserSessionIDHandler.addUser(mail, password);
+
+        return new ResponseEntity<>(sessionID, HttpStatus.OK);
+    }
+}
diff --git a/backend/src/main/resources/application.properties b/backend/src/main/resources/application.properties
new file mode 100644
index 0000000..8b13789
--- /dev/null
+++ b/backend/src/main/resources/application.properties
@@ -0,0 +1 @@
+
diff --git a/backend/src/test/java/com/example/backend/BackendApplicationTests.java b/backend/src/test/java/com/example/backend/BackendApplicationTests.java
new file mode 100644
index 0000000..840c145
--- /dev/null
+++ b/backend/src/test/java/com/example/backend/BackendApplicationTests.java
@@ -0,0 +1,15 @@
+package com.example.backend;
+
+import org.junit.jupiter.api.Test;
+import org.springframework.boot.test.context.SpringBootTest;
+
+@SpringBootTest
+class BackendApplicationTests
+{
+
+    @Test
+    void contextLoads()
+    {
+    }
+
+}