我们如何使用 shell 脚本在文件中的特定字符串之前添加一个块

Answer 1

首先，您还需要转义变量中的斜杠：

RESOURCE_BEAN="<Resource name=\"resourceBean\" auth=\"Container\" type=\"javax.sql.DataSource\" maxActive=\"100\" maxIdle=\"30\" maxWaitMillis=\"10000\" username=\"$username\" password=\"$password\" driverClassName=\"$classname\" url=\"$url\"\/>"
VAR1="<Manager pathname=\"\"\/>"

那么这个 sed 应该适合你：

sed 's/'"${VAR1}"'/'"${RESOURCE_BEAN}"'/'

测试：

$ cat context.xml
<Context path="/jasperserver-pro" reloadable="false">
    <Resource name="jdbc/jasperserver" auth="Container" type="javax.sql.DataSource" maxActive="100" maxIdle="30" maxWait="10000" username="jasperdb" password="password" driverClassName="org.postgresql.Driver" accessToUnderlyingConnectionAllowed="true" validationQuery="SELECT 1" testOnBorrow="true" url="jdbc:postgresql://127.0.0.1:5432/jasperserver?useUnicode=true&amp;amp;characterEncoding=UTF-8&amp;amp;autoReconnect=true&amp;amp;autoReconnectForPools=true" factory="com.jaspersoft.jasperserver.tomcat.jndi.JSCommonsBasicDataSourceFactory"/>
    <Resource name="jdbc/sugarcrm" auth="Container" type="javax.sql.DataSource" maxActive="100" maxIdle="30" maxWait="10000" username="jasperdb" password="password" driverClassName="org.postgresql.Driver" accessToUnderlyingConnectionAllowed="true" validationQuery="SELECT 1" testOnBorrow="true" url="jdbc:postgresql://127.0.0.1:5432/sugarcrm?useUnicode=true&amp;amp;characterEncoding=UTF-8&amp;amp;autoReconnect=true&amp;amp;autoReconnectForPools=true" factory="com.jaspersoft.jasperserver.tomcat.jndi.JSCommonsBasicDataSourceFactory"/>
    <Resource name="jdbc/foodmart" auth="Container" type="javax.sql.DataSource" maxActive="100" maxIdle="30" maxWait="10000" username="jasperdb" password="password" driverClassName="org.postgresql.Driver" accessToUnderlyingConnectionAllowed="true" validationQuery="SELECT 1" testOnBorrow="true" url="jdbc:postgresql://127.0.0.1:5432/foodmart?useUnicode=true&amp;amp;characterEncoding=UTF-8&amp;amp;autoReconnect=true&amp;amp;autoReconnectForPools=true" factory="com.jaspersoft.jasperserver.tomcat.jndi.JSCommonsBasicDataSourceFactory"/>
    <Manager pathname=""/>
</Context>

$ cat context.xml | sed 's/'"${VAR1}"'/'"${RESOURCE_BEAN}"'/'
    <Context path="/jasperserver-pro" reloadable="false">
        <Resource name="jdbc/jasperserver" auth="Container" type="javax.sql.DataSource" maxActive="100" maxIdle="30" maxWait="10000" username="jasperdb" password="password" driverClassName="org.postgresql.Driver" accessToUnderlyingConnectionAllowed="true" validationQuery="SELECT 1" testOnBorrow="true" url="jdbc:postgresql://127.0.0.1:5432/jasperserver?useUnicode=true&amp;amp;characterEncoding=UTF-8&amp;amp;autoReconnect=true&amp;amp;autoReconnectForPools=true" factory="com.jaspersoft.jasperserver.tomcat.jndi.JSCommonsBasicDataSourceFactory"/>
        <Resource name="jdbc/sugarcrm" auth="Container" type="javax.sql.DataSource" maxActive="100" maxIdle="30" maxWait="10000" username="jasperdb" password="password" driverClassName="org.postgresql.Driver" accessToUnderlyingConnectionAllowed="true" validationQuery="SELECT 1" testOnBorrow="true" url="jdbc:postgresql://127.0.0.1:5432/sugarcrm?useUnicode=true&amp;amp;characterEncoding=UTF-8&amp;amp;autoReconnect=true&amp;amp;autoReconnectForPools=true" factory="com.jaspersoft.jasperserver.tomcat.jndi.JSCommonsBasicDataSourceFactory"/>
        <Resource name="jdbc/foodmart" auth="Container" type="javax.sql.DataSource" maxActive="100" maxIdle="30" maxWait="10000" username="jasperdb" password="password" driverClassName="org.postgresql.Driver" accessToUnderlyingConnectionAllowed="true" validationQuery="SELECT 1" testOnBorrow="true" url="jdbc:postgresql://127.0.0.1:5432/foodmart?useUnicode=true&amp;amp;characterEncoding=UTF-8&amp;amp;autoReconnect=true&amp;amp;autoReconnectForPools=true" factory="com.jaspersoft.jasperserver.tomcat.jndi.JSCommonsBasicDataSourceFactory"/>
        <Resource name="resourceBean" auth="Container" type="javax.sql.DataSource" maxActive="100" maxIdle="30" maxWaitMillis="10000" username="" password="" driverClassName="" url=""/>
    </Context>

如果您不想在变量中转义斜杠，则必须将 sed 分隔符更改为管道，例如：

sed 's|'"${VAR1}"'|'"${RESOURCE_BEAN}"'|'