alfresco install in linux, and integrated with tesseract ocr

本文描述在Linux系统上安装Alfresco的步骤：

1. 下载安装文件:alfresco-community-5.0.d-installer-linux-x64.bin

2. 增加执行权限并执行：

   chmod +x alfresco-community-5.0.d-installer-linux-x64.bin

   ./alfresco-community-5.0.d-installer-linux-x64.bin

3. 选择安装过程中语言:

   Please select the installation language

   [1] English - English

   [2] French - Français

   [3] Spanish - Español

   [4] Italian - Italiano

   [5] German - Deutsch

   [6] Japanese - 日本語

   Please choose an option [1] :

4. 输入安装目录

   Installation folder

   Please choose a folder to install Alfresco Community (Evaluation Use Only)

   Select a folder [/opt/alfresco-5.0.d]:

5. 输入管理员(admin)的密码

   Admin Password

   Please give a password to use for the Alfresco administrator account.

   Admin Password: :

6. 重复密码,输入Y,继续安装

7. 安装提示，继续安装，直到完成

8. 访问:

    http://127.0.0.1:8080/share

• Create a file extension, named ocr-transform-context.xml into /tomcat/shared/classes/alfresco/extenssion with the following content:

  <?xml version='1.0' encoding='UTF-8'?>

    <!DOCTYPE beans PUBLIC '-//SPRING//DTD BEAN//EN''http://www.springframework.org/dtd/spring-beans.dtd'>
 
    <beans>
        <bean id="transformer.worker.ocr.tiff"class="org.alfresco.repo.content.transform.RuntimeExecutableContentTransformerWorker">
 
            <property name="mimetypeService">
                <ref bean="mimetypeService"/>
            </property>
 
              <property name="checkCommand">
                 <bean class="org.alfresco.util.exec.RuntimeExec">
                    <property name="commandsAndArguments">
                        <map>
                            <entry key=".*">
                                <list>
    <!--<value>tesseract</value>-->
                                    <value>/opt/alfresco/ocr</value>
                                </list>
                            </entry>
                        </map>
                    </property>
                    <property name="errorCodes">
                       <value>2</value>
                    </property>
                 </bean>
              </property>
 
              <property name="transformCommand">
                 <bean class="org.alfresco.util.exec.RuntimeExec">
                    <property name="commandsAndArguments">
                        <map>
                            <entry key=".*">
                                <list>
    <!--<value>tesseract</value>
                                    <value>${source}</value>
                                    <value>${target}</value>
                                    <value>-l</value>
                                    <value>eng</value>-->
                                    <value>/opt/alfresco/ocr</value>
                                    <value>${source}</value>
                                    <value>${target}</value>
                                </list>
                            </entry>
                        </map>
                    </property>
                    <property name="errorCodes">
                       <value>1,2</value>
                    </property>
                 </bean>
              </property>
 
              <property name="explicitTransformations">
                 <list>
                    <bean class="org.alfresco.repo.content.transform.ExplictTransformationDetails">
                        <property name="sourceMimetype"><value>image/tiff</value></property>
                        <property name="targetMimetype"><value>text/plain</value></property>
                    </bean>
</list>
</property>
</bean>
<bean id="transformer.ocr.tiff"class="org.alfresco.repo.content.transform.ProxyContentTransformer" parent="baseContentTransformer">
            <property name="worker">
                <ref bean="transformer.worker.ocr.tiff"/>
            </property>
        </bean>
    </beans>

Create a bash file, named "ocr" and put into the alfresco root directory. And put it into /opt/alfresco.

    #!/bin/bash
    # save arguments to variables
    SOURCE=$1
    TARGET=$2
    TMPDIR=/tmp
    FILENAME=`basename $SOURCE`
    OCRFILE=$FILENAME.tif

    # to see what happens
    #echo "from $SOURCE to $TARGET" >>/tmp/ocrtransform.log

    cp -f $SOURCE $TMPDIR/$OCRFILE

    # call tesseract and redirect output to $TARGET
    tesseract $TMPDIR/$OCRFILE ${TARGET%\.*} -l eng
    rm -f $TMPDIR/$OCRFILE