Collection of Servlet Filter

A little collection of useful servlet filters:

• Google Analytics
• Basic Authentication
• ApiKey Authentication
• Response Headers
• Block

Configuration

First add this to your pom.xml (double check version number with badge)

<dependency>
    <groupId>io.github.jdlopez</groupId>
    <artifactId>miscservletfilter</artifactId>
    <version>2.0.0</version>
</dependency>

Each filter has its own configuration set.

Check filter code before use:

• es.jdl.analytics.CollectFilter
• es.jdl.auth.BasicAuthenticationFilter
• es.jdl.auth.HeaderAuthenticationFilter
• es.jdl.response.AddHeadersFilter
• es.jdl.security.BlockingFilter

Common configuration

All filters can be configured using configFile initparam. It can be set with java system properties placeholders.

Ex:

configFile=${user.home}/myconfig.properties

ApiKey Authentication

Config content:

HeaderAuthenticationFilter.key.SOME_KEY=Response returned in header. Could be users name or whatever

Prefix Api Key entries can be changed with prefixApiKey parameter.

AddHeadersFilter

Config content:

AddHeadersFilter.header.MY_HEADER=header value

Header can be changed with prefixHeader parameter.

Block Filter

Config content:

BlockingFilter.intervalMillis=Max Interval between hits from same IP in millis. Default 1h 
BlockingFilter.globalMaxRequest=Max number of hits  from same IP in interval. Default 1000
BlockingFilter.globalMaxSize=IP table max size. To reduce memory allocation

Deploy to repository

mvn clean deploy -e -P ossrh 

News

• 2.0.0

Updated servlet-api to jakarta 6.0.0

• 1.1.0

Added some mapping utils: BeanMapper.java