java-spring: add README.md, docker-compose and Dockerfile

web/documentserver-example/java-spring/Dockerfile

@@ -0,0 +1,4 @@
+FROM maven:3.8.1-jdk-11
+COPY . /usr/src/app
+WORKDIR /usr/src/app
+RUN mvn -f /usr/src/app/pom.xml clean 

web/documentserver-example/java-spring/README.md

@@ -1,17 +1,244 @@
-# Getting Started
+## Overview
 
-### Reference Documentation
+This example will help you integrate ONLYOFFICE Docs into your web application written in Java 
-For further reference, please consider the following sections:
+with Spring Boot. 
 
-* [Official Apache Maven documentation](https://maven.apache.org/guides/index.html)
+Spring Boot has a lot of functionality, but its most significant features are: dependency management, 
-* [Spring Boot Maven Plugin Reference Guide](https://docs.spring.io/spring-boot/docs/2.5.1/maven-plugin/reference/html/)
+auto-configuration, and built-in servlet containers.
-* [Create an OCI image](https://docs.spring.io/spring-boot/docs/2.5.1/maven-plugin/reference/html/#build-image)
-* [Spring Web](https://docs.spring.io/spring-boot/docs/2.5.1/reference/htmlsingle/#boot-features-developing-web-applications)
 
-### Guides
+It is aimed at testing the editors. Please, do not use it for production without proper modifications.
-The following guides illustrate how to use some features concretely:
+## For Windows
 
-* [Building a RESTful Web Service](https://spring.io/guides/gs/rest-service/)
+### Step 1. Install ONLYOFFICE Docs
-* [Serving Web Content with Spring MVC](https://spring.io/guides/gs/serving-web-content/)
-* [Building REST services with Spring](https://spring.io/guides/tutorials/bookmarks/)
 
+Download and install ONLYOFFICE Docs (packaged as Document Server). 
+
+See the detailed guide to learn how to install Document Server [for Windows](https://helpcenter.onlyoffice.com/installation/docs-developer-install-windows.aspx). 
+
+### Step 2. Download the Java code for the editors integration
+
+Download the [Java-Spring example](https://api.onlyoffice.com/editors/demopreview) from our site.
+
+To connect the editors to your website, specify the path to the editors installation in the *\src\main\resources\settings.properties* file:
+
+```
+ server.address=address
+ server.port=port
+ files.docservice.url.site=https://documentserver/
+```
+
+where the **documentserver** is the name of the server with the ONLYOFFICE Document Server installed.
+**address** is the address of the server or comment this line to use localhost, **port** is the any available port.   
+
+If you want to experiment with the editor configuration, modify the [parameters](https://api.onlyoffice.com/editors/advanced) it the *\src\main\webapp\editor.jsp* file.
+
+### Step 3. Install the prerequisites
+To run the Java example code, install the Java version 11 appropriate for your OS and framework  **Apache Maven**:
+
+* Java (download from [the Oracle official website](https://www.java.com/en/download/manual.jsp));
+* Apache Maven (download from [the official website](https://maven.apache.org/download.cgi/)).
+
+### Step 4. Set environment variables
+
+1. After you have installed Java on Windows, set the **JAVA_HOME** environment variable to point to the Java installation directory.
+
+	Find out where Java is installed. If you didn't change the path during installation, it will be something like this:
+
+	```
+	C:\Program Files\Java\jdk
+	```
+
+	In **Windows 7** right click **My Computer** and select **Properties**, then click **Advanced**.
+
+	In **Windows 8** go to **Control Panel** -> **System** -> **Advanced System Settings**.
+
+	Click the **Environment Variables** button.
+
+	Under **System Variables**, click **New**.
+
+	In the **Variable Name** field, enter **JAVA_HOME** if you installed the **JDK** (Java Development Kit) or **JRE_HOME** if you installed the **JRE** (Java Runtime Environment).
+
+	In the **Variable Value** field, enter your **JDK** or **JRE** installation path, for example C:\Program Files\Java\jdk.
+
+	![make-var](screenshots/make-var.png)
+
+	Check if the variable created successfully by **echo** command in the **Command Prompt**:
+
+	```
+	echo %JAVA_HOME%
+	```
+	
+2. Set the **MAVEN_HOME** environment variable:
+    
+    Unzip the downloaded archive with the maven to any directory, it will be something like this:
+    	
+    ```
+    C:\apache-maven-3.8.1
+   ```
+    In **Windows 7** right click **My Computer** and select **Properties**, then click **Advanced**.
+
+	In **Windows 8** go to **Control Panel** -> **System** -> **Advanced System Settings**.
+
+	Click the **Environment Variables** button.
+
+	Under **System Variables**, click **New**.
+
+	In the **Variable Name** field, enter **MAVEN_HOME**.
+
+	In the **Variable Value** field, enter your **JDK** or **JRE** installation path, for example C:\apache-maven-3.8.1.
+
+	Add C:\apache-maven-3.8.1\bin to the PATH system variable:
+	In system variables, find PATH, clicks on the Edit... button. In “Edit environment variable” dialog, clicks on the New button and add this C:\apache-maven-3.8.1\bin
+	
+	Check if the variable created successfully by **echo** command in the **Command Prompt**:
+
+	```
+	echo %MAVEN_HOME%
+	```
+
+
+### Step 5. Start application with Maven
+
+1. Open the console and go the java-spring folder using the **cd** command, for example:
+	```
+	cd C:\Program Files\document-server-integration\web\documentserver-example\java-spring
+	```
+2. In the open console enter the following commands:
+	```
+	mvn clean
+	mvn package
+	mvn spring-boot:run
+	```
+3. Open your browser using **server.address** and **server.port**:
+ 
+     ```
+     http://server.address:server.port/
+     ```
+    
+
+
+### Step 6. Check accessibility
+
+ In case the example and Document Server are installed on different computers, make sure that your server with the example installed has access to the Document Server with the address which you specify instead of **documentserver** in the configuration files. 
+
+Make sure that the Document Server has access to the server with the example installed with the address which you specify instead of **example.com** in the configuration files.
+
+## For Linux
+### Step 1. Install ONLYOFFICE Docs
+
+Download and install ONLYOFFICE Docs (packaged as Document Server). 
+
+See the detailed guide to learn how to install Document Server [for Linux](https://helpcenter.onlyoffice.com/installation/docs-developer-install-ubuntu.aspx). 
+
+### Step 2. Install the prerequisites and run the website with the editors
+
+1. Install **Java**:
+
+    ```
+    sudo add-apt-repository ppa:webupd8team/java sudo apt-get update sudo apt-get install oracle-java11-installer
+    ```
+
+2. Download the archive with the Java-Spring example and unpack the archive or clone git repository:
+
+    a) archive with Java-Spring:
+
+    ```
+    wget https://api.onlyoffice.com/app_data/editor/Java-Spring%20Example.zip
+    ```
+    
+    ```
+    unzip Java-Spring\ Example.zip
+    ```
+    b) git repository:
+    ```
+    git clone https://github.com/ONLYOFFICE/document-server-integration.git
+    ```
+    
+   
+3. Change the current directory for the project directory:
+
+    a) from archive
+
+    ```
+   cd Java-Spring\ Example/
+   ```
+   b) from git repository 
+    ```
+    cd document-server-integration/web/documentserver-example/java-spring
+    ```
+4. Edit the *settings.properties* configuration file. Specify the name of your local server with the ONLYOFFICE Document Server installed.
+
+    ```
+    nano src/main/resources/settings.properties
+    ```
+
+	Edit the following lines:
+
+    ```
+    server.address=address
+    server.port=port
+    files.docservice.url.site=https://documentserver/
+    ```
+
+	Where the **documentserver** is the name of the server with the ONLYOFFICE Document Server installed.
+	**address** is the address of the server or comment this line to use localhost, **port** is the any available port.   
+
+5. Install **Maven**:
+
+    ```
+    sudo apt-get install maven
+    ```
+    
+6. Build:
+
+    ```
+    mvn package
+    ```
+ 
+ 7. Start Java-Spring example:
+     ```
+     ./mvnw spring-boot:run
+     ```
+ 8. Open your browser using **server.address** and **server.port**:
+ 
+     ```
+     http://server.address:server.port/
+     ```
+  
+
+
+### Step 3. Check accessibility
+
+In case the example and Document Server are installed on different computers, make sure that your server with the example installed has access to the Document Server with the address which you specify instead of **documentserver** in the configuration files. 
+
+Make sure that the Document Server has access to the server with the example installed with the address which you specify instead of **example.com** in the configuration files.
+
+##  For Docker
+
+1. Edit the *settings.properties* configuration file. Specify the name of your local server with the ONLYOFFICE Document Server installed ([installation instructions](https://helpcenter.onlyoffice.com/installation/docs-developer-install-docker.aspx)).
+
+	```
+	nano src/main/resources/settings.properties
+	```
+	
+2. Edit the following lines:
+
+   ```
+   server.address=address
+   server.port=port
+   files.docservice.url.site=https://documentserver/
+   ```
+    
+    Where the **documentserver** is the name of the server with the ONLYOFFICE Document Server installed.
+    **address** is the address of the server or comment this line to use localhost, **port** is the any available port.   
+
+3. Run the next command in the java example directory:
+
+	```
+	docker-compose up
+	```
+4. Open your browser using **server.address** and **server.port**:
+    
+      ```
+      http://server.address:server.port/
+      ```

web/documentserver-example/java-spring/docker-compose.yaml

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+version: '3'
+services:
+    java-spring:
+        build:
+            context: ./
+            dockerfile: Dockerfile
+        image: maven:3.8.1
+        working_dir: /java-spring
+        volumes:
+        - .:/java-spring
+        command: mvn clean spring-boot:run
+            
+