org.springframework.web.filter

## Class FormContentFilter

- java.lang.Object
- - org.springframework.web.filter.GenericFilterBean
  - - org.springframework.web.filter.OncePerRequestFilter
    - - org.springframework.web.filter.FormContentFilter

- All Implemented Interfaces:
    Filter, Aware, BeanNameAware, DisposableBean, InitializingBean, EnvironmentAware, EnvironmentCapable, ServletContextAware

      public class FormContentFilter
      extends OncePerRequestFilter

  `Filter` that parses form data for HTTP PUT, PATCH, and DELETE requests and exposes it as Servlet request parameters. By default the Servlet spec only requires this for HTTP POST.
  Since:
    5.1
  Author:
    Rossen Stoyanchev

- - ### Field Summary

    - ### Fields inherited from class org.springframework.web.filter.OncePerRequestFilter

      `ALREADY_FILTERED_SUFFIX`

    - ### Fields inherited from class org.springframework.web.filter.GenericFilterBean

      `logger`

  - ### Constructor Summary

    Constructors
    Constructor and Description
    `FormContentFilter()`

  - ### Method Summary

    All Methods Instance Methods Concrete Methods
    Modifier and Type | Method and Description
    --- | ---
    `protected void` | `doFilterInternal(HttpServletRequest request, HttpServletResponse response, FilterChain filterChain)` Same contract as for `doFilter`, but guaranteed to be just invoked once per request within a single request thread.
    `void` | `setCharset(Charset charset)` The default character set to use for reading form data.
    `void` | `setFormConverter(FormHttpMessageConverter converter)` Set the converter to use for parsing form content.

    - ### Methods inherited from class org.springframework.web.filter.OncePerRequestFilter

      `doFilter, doFilterNestedErrorDispatch, getAlreadyFilteredAttributeName, isAsyncDispatch, isAsyncStarted, shouldNotFilter, shouldNotFilterAsyncDispatch, shouldNotFilterErrorDispatch`

    - ### Methods inherited from class org.springframework.web.filter.GenericFilterBean

      `addRequiredProperty, afterPropertiesSet, createEnvironment, destroy, getEnvironment, getFilterConfig, getFilterName, getServletContext, init, initBeanWrapper, initFilterBean, setBeanName, setEnvironment, setServletContext`

    - ### Methods inherited from class java.lang.Object

      `clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

- - ### Constructor Detail

    - #### FormContentFilter

          public FormContentFilter()

  - ### Method Detail

    - #### setFormConverter

          public void setFormConverter(FormHttpMessageConverter converter)

      Set the converter to use for parsing form content.

      By default this is an instance of `AllEncompassingFormHttpMessageConverter`.

    - #### setCharset

          public void setCharset(Charset charset)

      The default character set to use for reading form data. This is a shortcut for:
      `getFormConverter.setCharset(charset)`.

    - #### doFilterInternal

          protected void doFilterInternal(HttpServletRequest request,
                                          HttpServletResponse response,
                                          FilterChain filterChain)
                                   throws ServletException,
                                          IOException

      Description copied from class: `OncePerRequestFilter`
      Same contract as for `doFilter`, but guaranteed to be just invoked once per request within a single request thread. See `OncePerRequestFilter.shouldNotFilterAsyncDispatch()` for details.

      Provides HttpServletRequest and HttpServletResponse arguments instead of the default ServletRequest and ServletResponse ones.

      Specified by:
        `doFilterInternal` in class `OncePerRequestFilter`
      Throws:
        `ServletException`
        `IOException`